2026-08-17 20:50:19 INFO ::casa Using user configuration file /home/casatest/.casa/config.py 2026-08-17 20:50:19 INFO ::casa loaded config file : /wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casaconfig/config.py 2026-08-17 20:50:19 INFO ::casa loaded config file : /home/casatest/.casa/config.py 2026-08-17 20:50:19 INFO ::casa 2026-08-17 20:50:19 INFO ::casa config values 2026-08-17 20:50:19 INFO ::casa agg = False 2026-08-17 20:50:19 INFO ::casa cachedir = '/home/casatest/.casa' 2026-08-17 20:50:19 INFO ::casa casaconfig_verbose = 1 2026-08-17 20:50:19 INFO ::casa colors = 'Neutral' 2026-08-17 20:50:19 INFO ::casa data_auto_update = False 2026-08-17 20:50:19 INFO ::casa data_update_interval = 1 2026-08-17 20:50:19 INFO ::casa datapath = ['/opt/casa/data/master', '/opt/casa/data/casatestdata'] 2026-08-17 20:50:19 INFO ::casa iplog = False 2026-08-17 20:50:19 INFO ::casa iplogfile = '/home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/ipython-20260817-205014.log' 2026-08-17 20:50:19 INFO ::casa log2term = True 2026-08-17 20:50:19 INFO ::casa logfile = '/home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/casa-20260817-205014.log' 2026-08-17 20:50:19 INFO ::casa measures_auto_update = False 2026-08-17 20:50:19 INFO ::casa measures_site = ['https://www.astron.nl/iers/', 'https://go.nrao.edu/iers/'] 2026-08-17 20:50:19 INFO ::casa measures_site_interval = 2 2026-08-17 20:50:19 INFO ::casa measures_update_interval = 1 2026-08-17 20:50:19 INFO ::casa measurespath = '/opt/casa/data/master' 2026-08-17 20:50:19 INFO ::casa nogui = False 2026-08-17 20:50:19 INFO ::casa nologfile = False 2026-08-17 20:50:19 INFO ::casa nologger = True 2026-08-17 20:50:19 INFO ::casa pipeline = False 2026-08-17 20:50:19 INFO ::casa startupfile = '/home/casatest/.casa/startup.py' 2026-08-17 20:50:19 INFO ::casa user_site = False 2026-08-17 20:50:19 INFO ::casa 2026-08-17 20:50:19 INFO ::casa casarundata version is unknown, this is probably a legacy version not installed by casaconfig 2026-08-17 20:50:19 INFO ::casa measures version is unknown, this is probably a legacy version not installed by casaconfig 2026-08-17 20:50:19 INFO ::casa 2026-08-17 20:50:19 INFO ::casa Checking Measures tables in data repository sub-directory /opt/casa/data/master/geodetic 2026-08-17 20:50:19 INFO ::casa IERSeop2000 (version date, last date in table (UTC)): 2026/08/06/15:15, 2026/07/07/00:00:00 2026-08-17 20:50:19 INFO ::casa IERSeop97 (version date, last date in table (UTC)): 2026/08/06/15:15, 2026/07/07/00:00:00 2026-08-17 20:50:19 INFO ::casa IERSpredict (version date, last date in table (UTC)): 2026/08/17/15:15, 2026/11/15/00:00:00 2026-08-17 20:50:19 INFO ::casa TAI_UTC (version date, last date in table (UTC)): 2026/08/02/15:15, 2017/01/01/00:00:00 Running tests... ---------------------------------------------------------------------- Using user configuration file /home/casatest/.casa/config.py No event loop hook running. Using matplotlib backend: agg CASA 6.7.4.8 -- Common Astronomy Software Applications [6.7.4.8] 2026-08-17 20:50:20 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:20 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:20 INFO phaseshift::::casa phaseshift( vis='/opt/casa/data/casatestdata/unittest/phaseshift/split11.ms', outputvis='phaseshift11.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter={'0': 'ICRS 1h27m38.337s +5d25m38.886s'} ) 2026-08-17 20:50:21 INFO MSTransformManager::parseMsSpecParams Input file name is /opt/casa/data/casatestdata/unittest/phaseshift/split11.ms 2026-08-17 20:50:21 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:21 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshift11.ms 2026-08-17 20:50:21 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:21 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:21 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:21 INFO MSTransformManager::open Select data 2026-08-17 20:50:21 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:22 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-08-17 20:50:22 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 1h27m38.337s +5d25m38.886s' successfully parsed for field 0 2026-08-17 20:50:22 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:23 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:23 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:19.765820 End time: 2026-08-17 20:50:22.529023 2026-08-17 20:50:23 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:23 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:23 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:23 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:23 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='test_vis_multi_field_phasecenter_dict.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter={'0': 'GALACTIC 19h53m50 40d06m00', '2': 'GALACTIC 22h01m02 40d04m03'} ) 2026-08-17 20:50:23 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:50:23 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:23 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-08-17 20:50:23 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:23 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:23 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:23 INFO MSTransformManager::open Select data 2026-08-17 20:50:23 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:23 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-08-17 20:50:23 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 19h53m50 40d06m00' successfully parsed for field 0 2026-08-17 20:50:23 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 22h01m02 40d04m03' successfully parsed for field 2 2026-08-17 20:50:23 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:24 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:24 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:22.593423 End time: 2026-08-17 20:50:23.594700 2026-08-17 20:50:24 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:24 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:24 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:24 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:24 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='test_vis_multi_field_phasecenter_dict.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter={'0': 'J2000 19h53m50 40d06m00', '3': 'J2000 19h53m50 40d06m00'} ) 2026-08-17 20:50:24 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:50:24 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:24 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-08-17 20:50:24 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:24 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:24 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:24 INFO MSTransformManager::open Select data 2026-08-17 20:50:24 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:24 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-08-17 20:50:24 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed for field 0 2026-08-17 20:50:24 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: Wrong field ID given: 3. This MeasurementSet has field IDs between 0 and 2 2026-08-17 20:50:24 INFO phaseshift::::casa Traceback (most recent call last): 2026-08-17 20:50:24 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-08-17 20:50:24 INFO phaseshift::::casa+ task_result = _phaseshift_t( _pc.document['vis'],_pc.document['outputvis'],_pc.document['keepmms'],_pc.document['field'],_pc.document['spw'],_pc.document['scan'],_pc.document['intent'],_pc.document['array'],_pc.document['observation'],_pc.document['datacolumn'],_pc.document['phasecenter'] ) 2026-08-17 20:50:24 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:24 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 99, in phaseshift 2026-08-17 20:50:24 INFO phaseshift::::casa+ mtlocal.open() 2026-08-17 20:50:24 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/mstransformer.py", line 36, in open 2026-08-17 20:50:24 INFO phaseshift::::casa+ return self._swigobj.open() 2026-08-17 20:50:24 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:24 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/mstransformer.py", line 176, in open 2026-08-17 20:50:24 INFO phaseshift::::casa+ return _mstransformer.mstransformer_open(self) 2026-08-17 20:50:24 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:24 INFO phaseshift::::casa+ RuntimeError: Wrong field ID given: 3. This MeasurementSet has field IDs between 0 and 2 2026-08-17 20:50:24 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:23.713181 End time: 2026-08-17 20:50:24.147779 2026-08-17 20:50:24 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:24 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:24 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:24 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:24 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='test_vis_multi_field_phasecenter_dict.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter={'0': 'J2000 19h53m50 40d06m00'} ) 2026-08-17 20:50:24 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:50:24 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:24 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-08-17 20:50:24 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:24 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:24 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:24 INFO MSTransformManager::open Select data 2026-08-17 20:50:24 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:25 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-08-17 20:50:25 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed for field 0 2026-08-17 20:50:25 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:25 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:25 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:24.238529 End time: 2026-08-17 20:50:25.081306 2026-08-17 20:50:25 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:25 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:25 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:25 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:25 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='test_vis_multi_field_phasecenter_dict.ms', keepmms=True, field='0,2', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter={'1': 'J2000 19h53m50 40d06m00', '2': 'J2000 22h01m02 40d04m03'} ) 2026-08-17 20:50:25 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:50:25 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:25 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-08-17 20:50:25 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:25 INFO MSTransformManager::parseDataSelParams field selection is 0,2 2026-08-17 20:50:25 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:25 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:25 INFO MSTransformManager::open Select data 2026-08-17 20:50:25 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:25 INFO MSTransformDataHandler::makeSelection 11536 out of 15344 rows are going to be considered due to the selection criteria. 2026-08-17 20:50:26 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-08-17 20:50:26 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed for field 1 2026-08-17 20:50:26 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 22h01m02 40d04m03' successfully parsed for field 2 2026-08-17 20:50:26 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:26 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:26 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:25.219293 End time: 2026-08-17 20:50:26.052207 2026-08-17 20:50:26 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:26 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:26 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:26 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:26 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='test_vis_multi_field_phasecenter_dict.ms', keepmms=True, field='0,2', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter={'0': 'ICRS 19h53m50 40d06m00', '2': 'ICRS 22h01m02 40d04m03'} ) 2026-08-17 20:50:26 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:50:26 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:26 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-08-17 20:50:26 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:26 INFO MSTransformManager::parseDataSelParams field selection is 0,2 2026-08-17 20:50:26 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:26 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:26 INFO MSTransformManager::open Select data 2026-08-17 20:50:26 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:26 INFO MSTransformDataHandler::makeSelection 11536 out of 15344 rows are going to be considered due to the selection criteria. 2026-08-17 20:50:27 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-08-17 20:50:27 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m50 40d06m00' successfully parsed for field 0 2026-08-17 20:50:27 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 22h01m02 40d04m03' successfully parsed for field 2 2026-08-17 20:50:27 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:27 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:27 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:26.143600 End time: 2026-08-17 20:50:27.015206 2026-08-17 20:50:27 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:27 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:27 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:27 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:27 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='test_vis_multi_field_phasecenter_dict.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40d06m00' ) 2026-08-17 20:50:27 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:50:27 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:27 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-08-17 20:50:27 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:27 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:27 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:27 INFO MSTransformManager::open Select data 2026-08-17 20:50:27 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:28 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:28 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-08-17 20:50:28 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:28 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:28 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:27.083748 End time: 2026-08-17 20:50:28.100148 2026-08-17 20:50:28 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:28 INFO phaseshift::::casa ########################################## ..2026-08-17 20:50:29 INFO MeasIERS::fillMeas(MeasIERS::Files, Double) Requested JD 0 is outside the range of the IERS (Earth axis data) table. 2026-08-17 20:50:29 INFO MeasIERS::fillMeas(MeasIERS::Files, Double) + Calculations will proceed with less precision ..2026-08-17 20:50:29 SEVERE Error in QuantumHolder::fromString with input string "xxh53m50": Illegal input units or format 2026-08-17 20:50:29 SEVERE + in converting quantity from string 2026-08-17 20:50:29 SEVERE Exception Reported: Empty QuantumHolder argument for asQuantumDouble 2026-08-17 20:50:29 SEVERE Exception Reports: Empty QuantumHolder argument for asQuantumDouble 2026-08-17 20:50:29 SEVERE phaseshift::::casa *** Error measures.direction() failed for phasecenter string: BOGUS xxh53m50 40d06m00 when interpreting parameter 'phasecenter': ...2026-08-17 20:50:33 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:33 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:33 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='1', observation='', datacolumn='all', phasecenter='ICRS 00h06m14 -06d23m35' ) 2026-08-17 20:50:33 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:33 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:33 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:33 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:33 INFO MSTransformManager::parseDataSelParams array selection is 1 2026-08-17 20:50:33 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:33 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:33 INFO MSTransformManager::open Select data 2026-08-17 20:50:33 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:33 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: MSSelectionNullSelection : The selected table has zero rows. 2026-08-17 20:50:33 INFO phaseshift::::casa Traceback (most recent call last): 2026-08-17 20:50:33 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-08-17 20:50:33 INFO phaseshift::::casa+ task_result = _phaseshift_t( _pc.document['vis'],_pc.document['outputvis'],_pc.document['keepmms'],_pc.document['field'],_pc.document['spw'],_pc.document['scan'],_pc.document['intent'],_pc.document['array'],_pc.document['observation'],_pc.document['datacolumn'],_pc.document['phasecenter'] ) 2026-08-17 20:50:33 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:33 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 99, in phaseshift 2026-08-17 20:50:33 INFO phaseshift::::casa+ mtlocal.open() 2026-08-17 20:50:33 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/mstransformer.py", line 36, in open 2026-08-17 20:50:33 INFO phaseshift::::casa+ return self._swigobj.open() 2026-08-17 20:50:33 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:33 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/mstransformer.py", line 176, in open 2026-08-17 20:50:33 INFO phaseshift::::casa+ return _mstransformer.mstransformer_open(self) 2026-08-17 20:50:33 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:33 INFO phaseshift::::casa+ RuntimeError: MSSelectionNullSelection : The selected table has zero rows. 2026-08-17 20:50:33 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:33.301606 End time: 2026-08-17 20:50:33.367783 2026-08-17 20:50:33 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:33 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:33 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:33 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:33 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='0', observation='', datacolumn='all', phasecenter='ICRS 00h06m14 -06d23m35' ) 2026-08-17 20:50:33 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:33 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:33 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:33 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:33 INFO MSTransformManager::parseDataSelParams array selection is 0 2026-08-17 20:50:33 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:33 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:33 INFO MSTransformManager::open Select data 2026-08-17 20:50:33 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:34 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-08-17 20:50:34 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-08-17 20:50:35 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:35 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -06d23m35' successfully parsed 2026-08-17 20:50:35 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:35 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:35 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:33.369861 End time: 2026-08-17 20:50:34.837536 2026-08-17 20:50:35 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:35 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:36 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:36 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:36 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='MODEL', phasecenter='ICRS 00h06m14 -06d23m35' ) 2026-08-17 20:50:36 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:36 INFO MSTransformManager::parseMsSpecParams Data column is MODEL 2026-08-17 20:50:36 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:36 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:36 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:36 WARN MSTransformManager::checkDataColumnsToFill MODEL_DATA column requested but not available in input MS 2026-08-17 20:50:36 INFO MSTransformManager::open Select data 2026-08-17 20:50:36 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:36 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: Desired column (MODEL_DATA) not found in the input MS (/home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/nep_copy.ms). 2026-08-17 20:50:36 INFO phaseshift::::casa Traceback (most recent call last): 2026-08-17 20:50:36 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-08-17 20:50:36 INFO phaseshift::::casa+ task_result = _phaseshift_t( _pc.document['vis'],_pc.document['outputvis'],_pc.document['keepmms'],_pc.document['field'],_pc.document['spw'],_pc.document['scan'],_pc.document['intent'],_pc.document['array'],_pc.document['observation'],_pc.document['datacolumn'],_pc.document['phasecenter'] ) 2026-08-17 20:50:36 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:36 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 99, in phaseshift 2026-08-17 20:50:36 INFO phaseshift::::casa+ mtlocal.open() 2026-08-17 20:50:36 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/mstransformer.py", line 36, in open 2026-08-17 20:50:36 INFO phaseshift::::casa+ return self._swigobj.open() 2026-08-17 20:50:36 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:36 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/mstransformer.py", line 176, in open 2026-08-17 20:50:36 INFO phaseshift::::casa+ return _mstransformer.mstransformer_open(self) 2026-08-17 20:50:36 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:36 INFO phaseshift::::casa+ RuntimeError: Desired column (MODEL_DATA) not found in the input MS (/home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/nep_copy.ms). 2026-08-17 20:50:36 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:35.849373 End time: 2026-08-17 20:50:35.882861 2026-08-17 20:50:36 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:36 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:36 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:36 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:36 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='DATA', phasecenter='ICRS 00h06m14 -06d23m35' ) 2026-08-17 20:50:36 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:36 INFO MSTransformManager::parseMsSpecParams Data column is DATA 2026-08-17 20:50:36 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:36 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:36 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:36 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:36 INFO MSTransformManager::open Select data 2026-08-17 20:50:36 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:36 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-08-17 20:50:36 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-08-17 20:50:37 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:37 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -06d23m35' successfully parsed 2026-08-17 20:50:37 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:37 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:37 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:35.884029 End time: 2026-08-17 20:50:36.976664 2026-08-17 20:50:37 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:37 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:38 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:38 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:38 INFO phaseshift::::casa phaseshift( vis='Itziar_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='2', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 00h00m01 -29d55m40' ) 2026-08-17 20:50:38 INFO MSTransformManager::parseMsSpecParams Input file name is Itziar_copy.ms 2026-08-17 20:50:38 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:38 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:38 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:38 INFO MSTransformManager::parseDataSelParams field selection is 2 2026-08-17 20:50:38 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:38 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:38 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:50:38 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:50:38 INFO MSTransformManager::open Select data 2026-08-17 20:50:38 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:38 INFO MSTransformDataHandler::makeSelection 6125 out of 245000 rows are going to be considered due to the selection criteria. 2026-08-17 20:50:38 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:38 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 00h00m01 -29d55m40' successfully parsed 2026-08-17 20:50:38 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:38 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:38 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:37.958945 End time: 2026-08-17 20:50:38.350313 2026-08-17 20:50:38 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:38 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:39 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:39 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:39 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='*FLUX*', array='', observation='', datacolumn='all', phasecenter='ICRS 00h06m14 -06d23m35' ) 2026-08-17 20:50:39 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:39 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:39 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:39 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:39 INFO MSTransformManager::parseDataSelParams scan intent selection is *FLUX* 2026-08-17 20:50:39 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:39 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:39 INFO MSTransformManager::open Select data 2026-08-17 20:50:39 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:39 INFO MSTransformDataHandler::makeSelection 570 out of 6270 rows are going to be considered due to the selection criteria. 2026-08-17 20:50:40 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-08-17 20:50:40 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-08-17 20:50:40 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:40 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -06d23m35' successfully parsed 2026-08-17 20:50:40 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:40 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:40 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:39.248344 End time: 2026-08-17 20:50:40.264311 2026-08-17 20:50:40 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:40 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:41 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:41 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:41 INFO phaseshift::::casa phaseshift( vis='mms_copy.mms', outputvis='phaseshiftout.ms', keepmms=False, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 05h30m48 13d31m48' ) 2026-08-17 20:50:41 INFO MSTransformManager::parseMsSpecParams Input file name is mms_copy.mms 2026-08-17 20:50:41 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:41 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:41 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:41 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:41 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:41 INFO MSTransformManager::open Select data 2026-08-17 20:50:41 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:42 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:42 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 05h30m48 13d31m48' successfully parsed 2026-08-17 20:50:42 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:42 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:42 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:41.255213 End time: 2026-08-17 20:50:41.947242 2026-08-17 20:50:42 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:42 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:43 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:43 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:43 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='1', datacolumn='all', phasecenter='ICRS 00h06m14 -06d23m35' ) 2026-08-17 20:50:43 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:43 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:43 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:43 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:43 INFO MSTransformManager::parseDataSelParams observation selection is 1 2026-08-17 20:50:43 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:43 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:43 INFO MSTransformManager::open Select data 2026-08-17 20:50:43 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:43 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: MSSelectionNullSelection : The selected table has zero rows. 2026-08-17 20:50:43 INFO phaseshift::::casa Traceback (most recent call last): 2026-08-17 20:50:43 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-08-17 20:50:43 INFO phaseshift::::casa+ task_result = _phaseshift_t( _pc.document['vis'],_pc.document['outputvis'],_pc.document['keepmms'],_pc.document['field'],_pc.document['spw'],_pc.document['scan'],_pc.document['intent'],_pc.document['array'],_pc.document['observation'],_pc.document['datacolumn'],_pc.document['phasecenter'] ) 2026-08-17 20:50:43 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:43 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 99, in phaseshift 2026-08-17 20:50:43 INFO phaseshift::::casa+ mtlocal.open() 2026-08-17 20:50:43 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/mstransformer.py", line 36, in open 2026-08-17 20:50:43 INFO phaseshift::::casa+ return self._swigobj.open() 2026-08-17 20:50:43 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:43 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/mstransformer.py", line 176, in open 2026-08-17 20:50:43 INFO phaseshift::::casa+ return _mstransformer.mstransformer_open(self) 2026-08-17 20:50:43 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:43 INFO phaseshift::::casa+ RuntimeError: MSSelectionNullSelection : The selected table has zero rows. 2026-08-17 20:50:43 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:42.817598 End time: 2026-08-17 20:50:42.859511 2026-08-17 20:50:43 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:43 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:43 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:43 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:43 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='0', datacolumn='all', phasecenter='ICRS 00h06m14 -06d23m35' ) 2026-08-17 20:50:43 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:43 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:43 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:43 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:43 INFO MSTransformManager::parseDataSelParams observation selection is 0 2026-08-17 20:50:43 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:43 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:43 INFO MSTransformManager::open Select data 2026-08-17 20:50:43 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:43 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-08-17 20:50:43 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-08-17 20:50:44 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:44 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -06d23m35' successfully parsed 2026-08-17 20:50:44 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:44 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:44 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:42.860714 End time: 2026-08-17 20:50:44.020468 2026-08-17 20:50:44 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:44 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:45 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:45 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:45 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40d06m00' ) 2026-08-17 20:50:45 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:50:45 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:45 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:45 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:45 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:45 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:45 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:50:45 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:50:45 INFO MSTransformManager::open Select data 2026-08-17 20:50:45 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:45 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:45 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-08-17 20:50:45 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:47 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:47 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:45.074531 End time: 2026-08-17 20:50:46.742126 2026-08-17 20:50:47 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:47 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:48 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:48 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:48 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='' ) 2026-08-17 20:50:48 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: phasecenter parameter must be specified 2026-08-17 20:50:48 INFO phaseshift::::casa Traceback (most recent call last): 2026-08-17 20:50:48 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-08-17 20:50:48 INFO phaseshift::::casa+ task_result = _phaseshift_t( _pc.document['vis'],_pc.document['outputvis'],_pc.document['keepmms'],_pc.document['field'],_pc.document['spw'],_pc.document['scan'],_pc.document['intent'],_pc.document['array'],_pc.document['observation'],_pc.document['datacolumn'],_pc.document['phasecenter'] ) 2026-08-17 20:50:48 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-08-17 20:50:48 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.4-8-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 31, in phaseshift 2026-08-17 20:50:48 INFO phaseshift::::casa+ raise ValueError("phasecenter parameter must be specified") 2026-08-17 20:50:48 INFO phaseshift::::casa+ ValueError: phasecenter parameter must be specified 2026-08-17 20:50:48 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:47.668363 End time: 2026-08-17 20:50:47.669791 2026-08-17 20:50:48 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:48 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:48 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:48 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:48 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 00h06m14 -08d23m35' ) 2026-08-17 20:50:48 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:48 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:48 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:48 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:48 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:48 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:48 INFO MSTransformManager::open Select data 2026-08-17 20:50:48 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:48 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-08-17 20:50:48 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-08-17 20:50:49 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:49 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -08d23m35' successfully parsed 2026-08-17 20:50:49 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:49 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:49 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:47.670920 End time: 2026-08-17 20:50:48.798335 2026-08-17 20:50:49 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:49 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:50 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:50 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:50 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='00h06m14 -08d23m35' ) 2026-08-17 20:50:50 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-08-17 20:50:50 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:50 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:50:50 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:50 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:50 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:50 INFO MSTransformManager::open Select data 2026-08-17 20:50:50 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:50 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-08-17 20:50:50 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-08-17 20:50:51 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:51 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center '00h06m14 -08d23m35' successfully parsed 2026-08-17 20:50:51 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:51 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:51 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:49.685699 End time: 2026-08-17 20:50:50.767839 2026-08-17 20:50:51 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:51 INFO phaseshift::::casa ########################################## .2026-08-17 20:50:52 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:52 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:50:52 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='post_phaseshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40d06m00' ) 2026-08-17 20:50:52 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:50:52 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:50:52 INFO MSTransformManager::parseMsSpecParams Output file name is post_phaseshift.ms 2026-08-17 20:50:52 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:50:52 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:50:52 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:50:52 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:50:52 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:50:52 INFO MSTransformManager::open Select data 2026-08-17 20:50:52 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:50:52 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:50:52 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-08-17 20:50:52 INFO phaseshift::::casa Shift phase center 2026-08-17 20:50:53 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:50:53 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:50:51.747917 End time: 2026-08-17 20:50:53.350209 2026-08-17 20:50:53 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:50:53 INFO phaseshift::::casa ########################################## 2026-08-17 20:50:53 INFO tclean::::casa ########################################## 2026-08-17 20:50:53 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:50:53 INFO tclean::::casa tclean( vis='datacopy.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='corrected', imagename='im2_pre', imsize=2048, cell='5arcsec', phasecenter='J2000 19h59m28.449 40d44m01.199', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='wproject', facets=1, psfphasecenter='', wprojplanes=128, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=0, gain=0.1, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:50:53 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:50:53 INFO SynthesisImagerVi2::selectData MS : datacopy.ms | [Opened in readonly mode] 2026-08-17 20:50:53 INFO SynthesisImagerVi2::selectData NRows selected : 63180 2026-08-17 20:50:54 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_pre] : 2026-08-17 20:50:54 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_pre] : 2026-08-17 20:50:54 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:50:54 INFO SynthesisImagerVi2::defineImage Shape: [2048, 2048, 1, 1] Spectral: [1.49998e+09] at [0] with increment [1.99998e+09] 2026-08-17 20:50:54 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im2_pre] with ftmachine : wprojectft 2026-08-17 20:50:54 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.3842 GB. Available mem.: 10.83 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:50:54 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:50:54 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im2_pre] : hogbom 2026-08-17 20:50:54 INFO SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:50:54 INFO WPConvFunc::findConvFunction W projection using 128 planes 2026-08-17 20:50:54 INFO WPConvFunc::findConvFunction Using maximum possible W = 10313.2 (wavelengths) 2026-08-17 20:50:54 INFO WPConvFunc::findConvFunction Typical wavelength = 0.299796 (m) 2026-08-17 20:50:54 INFO WPConvFunc::findConvFunction Scaling in W (at maximum W) = 0.639422 wavelengths per pixel 2026-08-17 20:51:34 INFO WPConvFunc::findConvFunction Convolution support = [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 28, 28, 28, 28, 28, 28, 28, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 36, 36, 36, 36, 36, 36, 36, 40, 40, 40, 40, 40, 40, 44, 44, 44, 44, 44, 44, 44, 48, 48, 48, 48, 48, 52, 52, 52, 52, 52, 52, 56, 56, 56, 56, 56, 60, 60, 60, 60, 60, 64, 64, 64, 64, 64, 68, 68, 68, 68, 68, 72, 72, 72, 72, 76, 76, 76, 76, 80, 80, 80] pixels in Fourier plane 2026-08-17 20:51:34 INFO WPConvFunc::findConvFunction Memory used in gridding function = 7 MB from maximum 15884 MB 2026-08-17 20:51:38 INFO SIImageStore::calcSensitivity [im2_pre] Theoretical sensitivity (Jy/bm):0.00204403 2026-08-17 20:51:38 INFO SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.097781 2026-08-17 20:51:38 INFO SIImageStore::printBeamSet Beam : 54.8469 arcsec, 48.7749 arcsec, 82.835 deg 2026-08-17 20:51:38 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:51:38 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:51:41 INFO task_tclean::SDAlgorithmBase::restore [im2_pre] : Restoring model image. 2026-08-17 20:51:41 WARN task_tclean::SIImageStore::restore (file /source/casa6/casatools/src/code/synthesis/ImagerObjects/SIImageStore.cc, line 2345) Restoring with an empty model image. Only residuals will be processed to form the output restored image. 2026-08-17 20:51:42 INFO task_tclean::SIImageStore::restore Beam for chan : 0 : 54.8469 arcsec, 48.7749 arcsec, 82.835 deg 2026-08-17 20:51:42 INFO tclean::::casa Searching for images with prefix 'im2_pre'... Found these, writing history into them: ['im2_pre.sumwt', 'im2_pre.pb', 'im2_pre.psf', 'im2_pre.image', 'im2_pre.residual', 'im2_pre.model'] 2026-08-17 20:51:42 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:50:53.436719 End time: 2026-08-17 20:51:41.686088 2026-08-17 20:51:42 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:51:42 INFO tclean::::casa ########################################## 2026-08-17 20:51:42 INFO tclean::::casa ########################################## 2026-08-17 20:51:42 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:51:42 INFO tclean::::casa tclean( vis='post_phaseshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='corrected', imagename='im2_post_phaseshift', imsize=2048, cell='5arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='wproject', facets=1, psfphasecenter='', wprojplanes=128, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=0, gain=0.1, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:51:42 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:51:42 INFO SynthesisImagerVi2::selectData MS : post_phaseshift.ms | [Opened in readonly mode] 2026-08-17 20:51:42 INFO SynthesisImagerVi2::selectData NRows selected : 63180 2026-08-17 20:51:42 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_post_phaseshift] : 2026-08-17 20:51:42 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_post_phaseshift] : 2026-08-17 20:51:42 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:51:42 INFO SynthesisImagerVi2::defineImage Shape: [2048, 2048, 1, 1] Spectral: [1.49998e+09] at [0] with increment [1.99998e+09] 2026-08-17 20:51:42 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im2_post_phaseshift] with ftmachine : wprojectft 2026-08-17 20:51:42 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.3842 GB. Available mem.: 10.81 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:51:42 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:51:42 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im2_post_phaseshift] : hogbom 2026-08-17 20:51:42 INFO SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:51:42 INFO WPConvFunc::findConvFunction W projection using 128 planes 2026-08-17 20:51:42 INFO WPConvFunc::findConvFunction Using maximum possible W = 10313.2 (wavelengths) 2026-08-17 20:51:42 INFO WPConvFunc::findConvFunction Typical wavelength = 0.299796 (m) 2026-08-17 20:51:42 INFO WPConvFunc::findConvFunction Scaling in W (at maximum W) = 0.639422 wavelengths per pixel 2026-08-17 20:52:18 INFO WPConvFunc::findConvFunction Convolution support = [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 28, 28, 28, 28, 28, 28, 28, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 36, 36, 36, 36, 36, 36, 36, 40, 40, 40, 40, 40, 40, 44, 44, 44, 44, 44, 44, 44, 48, 48, 48, 48, 48, 52, 52, 52, 52, 52, 52, 56, 56, 56, 56, 56, 60, 60, 60, 60, 60, 64, 64, 64, 64, 64, 68, 68, 68, 68, 68, 72, 72, 72, 72, 76, 76, 76, 76, 80, 80, 80] pixels in Fourier plane 2026-08-17 20:52:18 INFO WPConvFunc::findConvFunction Memory used in gridding function = 7 MB from maximum 15884 MB 2026-08-17 20:52:21 INFO SIImageStore::calcSensitivity [im2_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00204403 2026-08-17 20:52:21 INFO SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.079872 2026-08-17 20:52:21 INFO SIImageStore::printBeamSet Beam : 54.3737 arcsec, 48.741 arcsec, 82.2249 deg 2026-08-17 20:52:21 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:52:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:52:25 INFO task_tclean::SDAlgorithmBase::restore [im2_post_phaseshift] : Restoring model image. 2026-08-17 20:52:25 WARN task_tclean::SIImageStore::restore (file /source/casa6/casatools/src/code/synthesis/ImagerObjects/SIImageStore.cc, line 2345) Restoring with an empty model image. Only residuals will be processed to form the output restored image. 2026-08-17 20:52:25 INFO task_tclean::SIImageStore::restore Beam for chan : 0 : 54.3737 arcsec, 48.741 arcsec, 82.2249 deg 2026-08-17 20:52:25 INFO tclean::::casa Searching for images with prefix 'im2_post_phaseshift'... Found these, writing history into them: ['im2_post_phaseshift.psf', 'im2_post_phaseshift.image', 'im2_post_phaseshift.model', 'im2_post_phaseshift.sumwt', 'im2_post_phaseshift.residual', 'im2_post_phaseshift.pb'] 2026-08-17 20:52:25 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:51:41.718525 End time: 2026-08-17 20:52:25.108623 2026-08-17 20:52:25 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:52:25 INFO tclean::::casa ########################################## 2026-08-17 20:52:25 INFO tclean::::casa ########################################## 2026-08-17 20:52:25 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:52:25 INFO tclean::::casa tclean( vis='post_phaseshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='corrected', imagename='im2_post_phaseshift_tclean_phasecenter', imsize=2048, cell='5arcsec', phasecenter='J2000 19h59m28.449 40d44m01.199', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='wproject', facets=1, psfphasecenter='', wprojplanes=128, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=0, gain=0.1, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:52:25 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:52:25 INFO SynthesisImagerVi2::selectData MS : post_phaseshift.ms | [Opened in readonly mode] 2026-08-17 20:52:25 INFO SynthesisImagerVi2::selectData NRows selected : 63180 2026-08-17 20:52:25 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_post_phaseshift_tclean_phasecenter] : 2026-08-17 20:52:25 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_post_phaseshift_tclean_phasecenter] : 2026-08-17 20:52:25 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:52:25 INFO SynthesisImagerVi2::defineImage Shape: [2048, 2048, 1, 1] Spectral: [1.49998e+09] at [0] with increment [1.99998e+09] 2026-08-17 20:52:25 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im2_post_phaseshift_tclean_phasecenter] with ftmachine : wprojectft 2026-08-17 20:52:25 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.3842 GB. Available mem.: 10.83 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:52:25 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:52:25 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im2_post_phaseshift_tclean_phasecenter] : hogbom 2026-08-17 20:52:25 INFO SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:52:26 INFO WPConvFunc::findConvFunction W projection using 128 planes 2026-08-17 20:52:26 INFO WPConvFunc::findConvFunction Using maximum possible W = 10313.2 (wavelengths) 2026-08-17 20:52:26 INFO WPConvFunc::findConvFunction Typical wavelength = 0.299796 (m) 2026-08-17 20:52:26 INFO WPConvFunc::findConvFunction Scaling in W (at maximum W) = 0.639422 wavelengths per pixel 2026-08-17 20:53:01 INFO WPConvFunc::findConvFunction Convolution support = [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 28, 28, 28, 28, 28, 28, 28, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 36, 36, 36, 36, 36, 36, 36, 40, 40, 40, 40, 40, 40, 44, 44, 44, 44, 44, 44, 44, 48, 48, 48, 48, 48, 52, 52, 52, 52, 52, 52, 56, 56, 56, 56, 56, 60, 60, 60, 60, 60, 64, 64, 64, 64, 64, 68, 68, 68, 68, 68, 72, 72, 72, 72, 76, 76, 76, 76, 80, 80, 80] pixels in Fourier plane 2026-08-17 20:53:01 INFO WPConvFunc::findConvFunction Memory used in gridding function = 7 MB from maximum 15884 MB 2026-08-17 20:53:04 INFO SIImageStore::calcSensitivity [im2_post_phaseshift_tclean_phasecenter] Theoretical sensitivity (Jy/bm):0.00204403 2026-08-17 20:53:04 INFO SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.071682 2026-08-17 20:53:04 INFO SIImageStore::printBeamSet Beam : 54.8469 arcsec, 48.775 arcsec, 82.8349 deg 2026-08-17 20:53:04 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:53:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:53:08 INFO task_tclean::SDAlgorithmBase::restore [im2_post_phaseshift_tclean_phasecenter] : Restoring model image. 2026-08-17 20:53:08 WARN task_tclean::SIImageStore::restore (file /source/casa6/casatools/src/code/synthesis/ImagerObjects/SIImageStore.cc, line 2345) Restoring with an empty model image. Only residuals will be processed to form the output restored image. 2026-08-17 20:53:08 INFO task_tclean::SIImageStore::restore Beam for chan : 0 : 54.8469 arcsec, 48.775 arcsec, 82.8349 deg 2026-08-17 20:53:08 INFO tclean::::casa Searching for images with prefix 'im2_post_phaseshift_tclean_phasecenter'... Found these, writing history into them: ['im2_post_phaseshift_tclean_phasecenter.residual', 'im2_post_phaseshift_tclean_phasecenter.pb', 'im2_post_phaseshift_tclean_phasecenter.sumwt', 'im2_post_phaseshift_tclean_phasecenter.model', 'im2_post_phaseshift_tclean_phasecenter.image', 'im2_post_phaseshift_tclean_phasecenter.psf'] 2026-08-17 20:53:08 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:52:25.150121 End time: 2026-08-17 20:53:08.093576 2026-08-17 20:53:08 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:53:08 INFO tclean::::casa ########################################## Image value at source locations Original MS : {'unit': 'Jy/beam', 'value': 1.0387226343154907} and {'unit': 'Jy/beam', 'value': 5.590171813964844} Phase shifted MS : {'unit': 'Jy/beam', 'value': 1.038696050643921} and {'unit': 'Jy/beam', 'value': 5.589254856109619} .2026-08-17 20:53:10 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:10 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:53:10 INFO phaseshift::::casa phaseshift( vis='ngc_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='1', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 23h11m54 61d10m54' ) 2026-08-17 20:53:10 INFO MSTransformManager::parseMsSpecParams Input file name is ngc_copy.ms 2026-08-17 20:53:10 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:53:10 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:53:10 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:53:10 INFO MSTransformManager::parseDataSelParams spw selection is 1 2026-08-17 20:53:10 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:53:10 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:53:10 INFO MSTransformManager::initDataSelectionParams Selected SPWs Ids are Axis Lengths: [1, 4] (NB: Matrix in Row/Column order) 2026-08-17 20:53:10 INFO MSTransformManager::initDataSelectionParams+ [1, 0, 4, 1] 2026-08-17 20:53:10 INFO MSTransformManager::open Select data 2026-08-17 20:53:10 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:53:10 INFO MSTransformDataHandler::makeSelection 13338 out of 26676 rows are going to be considered due to the selection criteria. 2026-08-17 20:53:10 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:53:10 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 23h11m54 61d10m54' successfully parsed 2026-08-17 20:53:10 INFO phaseshift::::casa Shift phase center 2026-08-17 20:53:10 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:53:10 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:53:09.806538 End time: 2026-08-17 20:53:10.217474 2026-08-17 20:53:10 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:53:10 INFO phaseshift::::casa ########################################## .2026-08-17 20:53:11 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:11 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:53:11 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40d06m00' ) 2026-08-17 20:53:11 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-08-17 20:53:11 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:53:11 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-08-17 20:53:11 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:53:11 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:53:11 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:53:11 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:53:11 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:53:11 INFO MSTransformManager::open Select data 2026-08-17 20:53:11 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:53:12 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:53:12 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-08-17 20:53:12 INFO phaseshift::::casa Shift phase center 2026-08-17 20:53:13 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:53:13 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:53:11.220087 End time: 2026-08-17 20:53:12.907192 2026-08-17 20:53:13 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:53:13 INFO phaseshift::::casa ########################################## .2026-08-17 20:53:13 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:13 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:53:13 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='0', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40.108888889deg' ) 2026-08-17 20:53:13 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:53:13 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:53:13 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:53:13 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:53:13 INFO MSTransformManager::parseDataSelParams field selection is 0 2026-08-17 20:53:13 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:53:13 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:53:13 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:53:13 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:53:13 INFO MSTransformManager::open Select data 2026-08-17 20:53:13 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:53:13 INFO MSTransformDataHandler::makeSelection 3510 out of 7020 rows are going to be considered due to the selection criteria. 2026-08-17 20:53:14 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:53:14 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40.108888889deg' successfully parsed 2026-08-17 20:53:14 INFO phaseshift::::casa Shift phase center 2026-08-17 20:53:14 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:53:14 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:53:13.397219 End time: 2026-08-17 20:53:13.743860 2026-08-17 20:53:14 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:53:14 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:14 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-08-17 20:53:14 INFO tclean::::casa ########################################## 2026-08-17 20:53:14 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:53:14 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:53:14 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:53:14 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:53:14 INFO SynthesisImagerVi2::selectData NRows selected : 3510 2026-08-17 20:53:14 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:14 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:14 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:53:14 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99981e+08] at [0] with increment [9.99998e+07] 2026-08-17 20:53:14 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:53:14 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.82 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:53:14 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:53:14 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:53:14 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:53:14 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.0119352 2026-08-17 20:53:14 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.012273 2026-08-17 20:53:14 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.8546 arcsec, 77.1301 arcsec, -77.9234 deg 2026-08-17 20:53:14 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:53:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:53:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:53:14 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:53:14 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:53:14 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:53:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6347251534461975, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.634725, CycleNiter=20, Gain=0.3 2026-08-17 20:53:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:53:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:53:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:53:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:53:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07467404007911682, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.074674, CycleNiter=14, Gain=0.3 2026-08-17 20:53:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692058, Reached cyclethreshold. 2026-08-17 20:53:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:53:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:53:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692053, over full image : 0.0692053 2026-08-17 20:53:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.00878525897860527, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00878526, CycleNiter=8, Gain=0.3 2026-08-17 20:53:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692053->0.00814193, Reached cyclethreshold. 2026-08-17 20:53:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:53:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:53:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814184, over full image : 0.00814184 2026-08-17 20:53:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0010335649130865932, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00103356, CycleNiter=2, Gain=0.3 2026-08-17 20:53:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814184->0.00279265, Reached cycleniter. 2026-08-17 20:53:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:53:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:53:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279276, over full image : 0.00279276 2026-08-17 20:53:15 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:53:15 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:53:15 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:53:15 INFO SIImageStore::restore Beam for chan : 0 : 88.8546 arcsec, 77.1301 arcsec, -77.9234 deg 2026-08-17 20:53:15 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:53:15 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:53:13.933425 End time: 2026-08-17 20:53:15.490054 2026-08-17 20:53:15 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:53:15 INFO tclean::::casa ########################################## 2026-08-17 20:53:16 INFO imstat::::casa ########################################## 2026-08-17 20:53:16 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:53:16 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:53:16 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:53:16 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:53:16 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:53:16 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:53:16 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:53:16 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.888, +39.49.25.864, I, 9.99981e+08Hz to 19:52:21.069, +40.23.25.888, I, 9.99981e+08Hz) 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.888, +39.49.25.864, I, 9.99981e+08Hz 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.069, +40.23.25.888, I, 9.99981e+08Hz 2026-08-17 20:53:16 INFO imstat:::: Values --- 2026-08-17 20:53:16 INFO imstat:::: -- flux density [flux]: 4.99409 Jy 2026-08-17 20:53:16 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:53:16 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- minimum value [min]: -0.00012283 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 124, 0, 0] 2026-08-17 20:53:16 INFO imstat:::: -- position of min value (pixel) [minpos]: [100, 55, 0, 0] 2026-08-17 20:53:16 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 9.99981e+08Hz 2026-08-17 20:53:16 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:09.479, +39.56.47.897, I, 9.99981e+08Hz 2026-08-17 20:53:16 INFO imstat:::: -- Sum of pixel values [sum]: 605.961 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1516.75 Jy/beam.Jy/beam 2026-08-17 20:53:16 INFO imstat:::: Statistics --- 2026-08-17 20:53:16 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00924623 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- Variance of the pixel values : 0.0230586 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.15185 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- Root mean square [rms]: 0.152131 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- Median of the pixel values [median]: -2.09007e-05 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 3.00259e-05 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- IQR [quartile]: 6.1616e-05 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- First quartile [q1]: -4.79744e-05 Jy/beam 2026-08-17 20:53:16 INFO imstat:::: -- Third quartile [q3]: 1.36416e-05 Jy/beam 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:53:16 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.059610e+02 9.246232e-03 1.521305e-01 1.518505e-01 -1.228298e-04 4.999997e+00 2026-08-17 20:53:16 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:53:15.502662 End time: 2026-08-17 20:53:15.525524 2026-08-17 20:53:16 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:53:16 INFO imstat::::casa ########################################## 2026-08-17 20:53:16 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:16 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:53:16 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='fake', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40.108888889deg' ) 2026-08-17 20:53:16 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:53:16 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:53:16 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:53:16 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:53:16 INFO MSTransformManager::parseDataSelParams field selection is fake 2026-08-17 20:53:16 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:53:16 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:53:16 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:53:16 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:53:16 INFO MSTransformManager::open Select data 2026-08-17 20:53:16 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:53:16 INFO MSTransformDataHandler::makeSelection 3510 out of 7020 rows are going to be considered due to the selection criteria. 2026-08-17 20:53:16 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:53:16 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40.108888889deg' successfully parsed 2026-08-17 20:53:16 INFO phaseshift::::casa Shift phase center 2026-08-17 20:53:16 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:53:16 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:53:15.536749 End time: 2026-08-17 20:53:15.924907 2026-08-17 20:53:16 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:53:16 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:16 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data.ms... 2026-08-17 20:53:16 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-08-17 20:53:16 INFO tclean::::casa ########################################## 2026-08-17 20:53:16 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:53:16 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:53:16 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:53:16 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:53:16 INFO SynthesisImagerVi2::selectData NRows selected : 3510 2026-08-17 20:53:16 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:16 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:16 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:53:16 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99981e+08] at [0] with increment [9.99998e+07] 2026-08-17 20:53:16 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:53:16 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.81 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:53:16 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:53:16 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:53:16 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:53:16 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.0119352 2026-08-17 20:53:16 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.012562 2026-08-17 20:53:16 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.8546 arcsec, 77.1301 arcsec, -77.9234 deg 2026-08-17 20:53:16 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:53:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:53:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:53:17 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:53:17 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:53:17 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:53:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6347251534461975, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.634725, CycleNiter=20, Gain=0.3 2026-08-17 20:53:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:53:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:53:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:53:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:53:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07467404007911682, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.074674, CycleNiter=14, Gain=0.3 2026-08-17 20:53:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692058, Reached cyclethreshold. 2026-08-17 20:53:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:53:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:53:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692053, over full image : 0.0692053 2026-08-17 20:53:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.00878525897860527, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00878526, CycleNiter=8, Gain=0.3 2026-08-17 20:53:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692053->0.00814193, Reached cyclethreshold. 2026-08-17 20:53:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:53:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:53:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814184, over full image : 0.00814184 2026-08-17 20:53:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0010335649130865932, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00103356, CycleNiter=2, Gain=0.3 2026-08-17 20:53:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814184->0.00279265, Reached cycleniter. 2026-08-17 20:53:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:53:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:53:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279276, over full image : 0.00279276 2026-08-17 20:53:17 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:53:17 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:53:17 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:53:17 INFO SIImageStore::restore Beam for chan : 0 : 88.8546 arcsec, 77.1301 arcsec, -77.9234 deg 2026-08-17 20:53:17 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:53:17 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:53:15.987664 End time: 2026-08-17 20:53:17.455792 2026-08-17 20:53:17 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:53:17 INFO tclean::::casa ########################################## 2026-08-17 20:53:17 INFO imstat::::casa ########################################## 2026-08-17 20:53:17 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:53:17 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:53:17 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:53:17 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:53:17 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:53:17 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:53:17 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:53:17 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.888, +39.49.25.864, I, 9.99981e+08Hz to 19:52:21.069, +40.23.25.888, I, 9.99981e+08Hz) 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.888, +39.49.25.864, I, 9.99981e+08Hz 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.069, +40.23.25.888, I, 9.99981e+08Hz 2026-08-17 20:53:17 INFO imstat:::: Values --- 2026-08-17 20:53:17 INFO imstat:::: -- flux density [flux]: 4.99409 Jy 2026-08-17 20:53:17 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:53:17 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- minimum value [min]: -0.00012283 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 124, 0, 0] 2026-08-17 20:53:17 INFO imstat:::: -- position of min value (pixel) [minpos]: [100, 55, 0, 0] 2026-08-17 20:53:17 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 9.99981e+08Hz 2026-08-17 20:53:17 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:09.479, +39.56.47.897, I, 9.99981e+08Hz 2026-08-17 20:53:17 INFO imstat:::: -- Sum of pixel values [sum]: 605.961 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1516.75 Jy/beam.Jy/beam 2026-08-17 20:53:17 INFO imstat:::: Statistics --- 2026-08-17 20:53:17 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00924623 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- Variance of the pixel values : 0.0230586 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.15185 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- Root mean square [rms]: 0.152131 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- Median of the pixel values [median]: -2.09007e-05 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 3.00259e-05 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- IQR [quartile]: 6.1616e-05 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- First quartile [q1]: -4.79744e-05 Jy/beam 2026-08-17 20:53:17 INFO imstat:::: -- Third quartile [q3]: 1.36416e-05 Jy/beam 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:53:17 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.059610e+02 9.246232e-03 1.521305e-01 1.518505e-01 -1.228298e-04 4.999997e+00 2026-08-17 20:53:17 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:53:17.457793 End time: 2026-08-17 20:53:17.484608 2026-08-17 20:53:17 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:53:17 INFO imstat::::casa ########################################## 2026-08-17 20:53:17 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:17 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:53:17 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40.108888889deg' ) 2026-08-17 20:53:18 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:53:18 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:53:18 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:53:18 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:53:18 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:53:18 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:53:18 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:53:18 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:53:18 INFO MSTransformManager::open Select data 2026-08-17 20:53:18 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:53:18 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:53:18 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40.108888889deg' successfully parsed 2026-08-17 20:53:18 INFO phaseshift::::casa Shift phase center 2026-08-17 20:53:18 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:53:18 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:53:17.494939 End time: 2026-08-17 20:53:17.928685 2026-08-17 20:53:18 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:53:18 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:18 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-08-17 20:53:18 INFO tclean::::casa ########################################## 2026-08-17 20:53:18 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:53:18 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:53:18 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:53:18 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:53:18 INFO SynthesisImagerVi2::selectData NRows selected : 7020 2026-08-17 20:53:18 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:18 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:18 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:53:18 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:53:18 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:53:18 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.81 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:53:18 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:53:18 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:53:18 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:53:18 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00843949 2026-08-17 20:53:18 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.018006 2026-08-17 20:53:18 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.9193 arcsec, 77.6082 arcsec, 88.5528 deg 2026-08-17 20:53:18 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:53:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:53:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:53:19 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:53:19 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:53:19 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:53:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6069034934043884, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.606903, CycleNiter=20, Gain=0.3 2026-08-17 20:53:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:53:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:53:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:53:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:53:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07140088081359863, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0714009, CycleNiter=14, Gain=0.3 2026-08-17 20:53:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692058, Reached cyclethreshold. 2026-08-17 20:53:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:53:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:53:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692053, over full image : 0.0692053 2026-08-17 20:53:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.00840018317103386, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00840018, CycleNiter=8, Gain=0.3 2026-08-17 20:53:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692053->0.00814193, Reached cyclethreshold. 2026-08-17 20:53:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:53:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:53:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814189, over full image : 0.00814189 2026-08-17 20:53:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009882674785330892, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000988267, CycleNiter=2, Gain=0.3 2026-08-17 20:53:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814189->0.00279267, Reached cycleniter. 2026-08-17 20:53:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:53:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:53:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0027928, over full image : 0.0027928 2026-08-17 20:53:20 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:53:20 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:53:20 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:53:20 INFO SIImageStore::restore Beam for chan : 0 : 88.9193 arcsec, 77.6082 arcsec, 88.5528 deg 2026-08-17 20:53:20 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:53:20 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:53:18.032999 End time: 2026-08-17 20:53:19.778453 2026-08-17 20:53:20 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:53:20 INFO tclean::::casa ########################################## 2026-08-17 20:53:20 INFO imstat::::casa ########################################## 2026-08-17 20:53:20 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:53:20 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:53:20 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:53:20 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:53:20 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:53:20 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:53:20 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:53:20 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.888, +39.49.25.864, I, 999981604.64Hz to 19:52:21.069, +40.23.25.888, I, 999981604.64Hz) 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.888, +39.49.25.864, I, 999981604.64Hz 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.069, +40.23.25.888, I, 999981604.64Hz 2026-08-17 20:53:20 INFO imstat:::: Values --- 2026-08-17 20:53:20 INFO imstat:::: -- flux density [flux]: 4.99444 Jy 2026-08-17 20:53:20 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:53:20 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- minimum value [min]: -9.70533e-05 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 124, 0, 0] 2026-08-17 20:53:20 INFO imstat:::: -- position of min value (pixel) [minpos]: [158, 70, 0, 0] 2026-08-17 20:53:20 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981604.64Hz 2026-08-17 20:53:20 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:29.120, +39.58.47.882, I, 999981604.64Hz 2026-08-17 20:53:20 INFO imstat:::: -- Sum of pixel values [sum]: 610.203 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1527.26 Jy/beam.Jy/beam 2026-08-17 20:53:20 INFO imstat:::: Statistics --- 2026-08-17 20:53:20 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00931096 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- Variance of the pixel values : 0.0232178 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152374 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- Root mean square [rms]: 0.152657 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- Median of the pixel values [median]: -1.85752e-05 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.83975e-05 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- IQR [quartile]: 3.74524e-05 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- First quartile [q1]: -3.53147e-05 Jy/beam 2026-08-17 20:53:20 INFO imstat:::: -- Third quartile [q3]: 2.13765e-06 Jy/beam 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:53:20 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.102032e+02 9.310961e-03 1.526569e-01 1.523738e-01 -9.705327e-05 4.999997e+00 2026-08-17 20:53:20 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:53:19.782071 End time: 2026-08-17 20:53:19.815368 2026-08-17 20:53:20 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:53:20 INFO imstat::::casa ########################################## 2026-08-17 20:53:20 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:20 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:53:20 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='1', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 50.108888889deg' ) 2026-08-17 20:53:20 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:53:20 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:53:20 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:53:20 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:53:20 INFO MSTransformManager::parseDataSelParams field selection is 1 2026-08-17 20:53:20 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:53:20 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:53:20 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:53:20 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:53:20 INFO MSTransformManager::open Select data 2026-08-17 20:53:20 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:53:20 INFO MSTransformDataHandler::makeSelection 3510 out of 7020 rows are going to be considered due to the selection criteria. 2026-08-17 20:53:20 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:53:20 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 50.108888889deg' successfully parsed 2026-08-17 20:53:20 INFO phaseshift::::casa Shift phase center 2026-08-17 20:53:20 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:53:20 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:53:19.833420 End time: 2026-08-17 20:53:20.230552 2026-08-17 20:53:20 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:53:20 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:20 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-08-17 20:53:20 INFO tclean::::casa ########################################## 2026-08-17 20:53:20 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:53:20 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:53:20 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:53:20 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:53:20 INFO SynthesisImagerVi2::selectData NRows selected : 3510 2026-08-17 20:53:20 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:20 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:20 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:53:20 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99968e+08] at [0] with increment [9.99982e+07] 2026-08-17 20:53:20 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:53:20 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.81 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:53:20 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:53:20 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:53:20 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:53:21 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.0119352 2026-08-17 20:53:21 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01815 2026-08-17 20:53:21 INFO task_tclean::SIImageStore::printBeamSet Beam : 89.6341 arcsec, 77.7728 arcsec, 83.0376 deg 2026-08-17 20:53:21 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:53:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:53:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 0.290316 2026-08-17 20:53:21 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:53:21 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:53:21 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.290316, over full image : 0.290316 2026-08-17 20:53:21 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.03697436675429344, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0369744, CycleNiter=20, Gain=0.3 2026-08-17 20:53:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->20 [20], model=0->1.38616, peakres=0.290316->0.18329, Reached cycleniter. 2026-08-17 20:53:21 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:53:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:53:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.180075, over full image : 0.180075 2026-08-17 20:53:21 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:53:21 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:53:21 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:53:21 INFO SIImageStore::restore Beam for chan : 0 : 89.6341 arcsec, 77.7728 arcsec, 83.0376 deg 2026-08-17 20:53:21 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:53:21 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:53:20.335935 End time: 2026-08-17 20:53:21.350099 2026-08-17 20:53:21 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:53:21 INFO tclean::::casa ########################################## 2026-08-17 20:53:21 INFO imstat::::casa ########################################## 2026-08-17 20:53:21 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:53:21 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:53:21 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:53:21 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:53:21 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:53:21 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:53:21 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:53:21 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:35.817, +49.49.24.973, I, 9.99968e+08Hz to 19:52:03.760, +50.23.24.993, I, 9.99968e+08Hz) 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:35.817, +49.49.24.973, I, 9.99968e+08Hz 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:03.760, +50.23.24.993, I, 9.99968e+08Hz 2026-08-17 20:53:21 INFO imstat:::: Values --- 2026-08-17 20:53:21 INFO imstat:::: -- flux density [flux]: -0.242513 Jy 2026-08-17 20:53:21 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:53:21 INFO imstat:::: -- maximum value [max]: 0.285872 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- minimum value [min]: -0.1468 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- position of max value (pixel) [maxpos]: [54, 120, 0, 0] 2026-08-17 20:53:21 INFO imstat:::: -- position of min value (pixel) [minpos]: [148, 28, 0, 0] 2026-08-17 20:53:21 INFO imstat:::: -- position of max value (world) [maxposf]: 19:54:51.516, +50.05.26.984, I, 9.99968e+08Hz 2026-08-17 20:53:21 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:33.445, +49.53.11.924, I, 9.99968e+08Hz 2026-08-17 20:53:21 INFO imstat:::: -- Sum of pixel values [sum]: -29.9309 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 233.452 Jy/beam.Jy/beam 2026-08-17 20:53:21 INFO imstat:::: Statistics --- 2026-08-17 20:53:21 INFO imstat:::: -- Mean of the pixel values [mean]: -0.00045671 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- Variance of the pixel values : 0.00356204 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.0596828 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- Root mean square [rms]: 0.0596841 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- Median of the pixel values [median]: -0.00646386 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 0.0391011 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- IQR [quartile]: 0.0789052 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- First quartile [q1]: -0.0432754 Jy/beam 2026-08-17 20:53:21 INFO imstat:::: -- Third quartile [q3]: 0.0356299 Jy/beam 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:53:21 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 -2.993095e+01 -4.567100e-04 5.968411e-02 5.968282e-02 -1.468002e-01 2.858716e-01 2026-08-17 20:53:21 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:53:21.354200 End time: 2026-08-17 20:53:21.392753 2026-08-17 20:53:21 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:53:21 INFO imstat::::casa ########################################## 2026-08-17 20:53:21 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:21 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:53:21 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='pretend', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 50.108888889deg' ) 2026-08-17 20:53:21 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:53:21 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:53:21 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:53:21 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:53:21 INFO MSTransformManager::parseDataSelParams field selection is pretend 2026-08-17 20:53:21 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:53:21 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:53:21 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:53:21 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:53:21 INFO MSTransformManager::open Select data 2026-08-17 20:53:21 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:53:21 INFO MSTransformDataHandler::makeSelection 3510 out of 7020 rows are going to be considered due to the selection criteria. 2026-08-17 20:53:22 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:53:22 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 50.108888889deg' successfully parsed 2026-08-17 20:53:22 INFO phaseshift::::casa Shift phase center 2026-08-17 20:53:22 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:53:22 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:53:21.410178 End time: 2026-08-17 20:53:21.859532 2026-08-17 20:53:22 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:53:22 INFO phaseshift::::casa ########################################## 2026-08-17 20:53:22 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data.ms... 2026-08-17 20:53:22 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-08-17 20:53:22 INFO tclean::::casa ########################################## 2026-08-17 20:53:22 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:53:22 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:53:22 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:53:22 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:53:22 INFO SynthesisImagerVi2::selectData NRows selected : 3510 2026-08-17 20:53:22 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:22 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:53:22 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:53:22 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99968e+08] at [0] with increment [9.99982e+07] 2026-08-17 20:53:22 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:53:22 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.81 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:53:22 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:53:22 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:53:22 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:53:22 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.0119352 2026-08-17 20:53:22 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.020197 2026-08-17 20:53:22 INFO task_tclean::SIImageStore::printBeamSet Beam : 89.6341 arcsec, 77.7728 arcsec, 83.0376 deg 2026-08-17 20:53:22 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:53:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:53:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 0.290316 2026-08-17 20:53:22 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:53:22 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:53:22 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.290316, over full image : 0.290316 2026-08-17 20:53:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.03697436675429344, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:53:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0369744, CycleNiter=20, Gain=0.3 2026-08-17 20:53:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->20 [20], model=0->1.38616, peakres=0.290316->0.18329, Reached cycleniter. 2026-08-17 20:53:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:53:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:53:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.180075, over full image : 0.180075 2026-08-17 20:53:23 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:53:23 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:53:23 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:53:23 INFO SIImageStore::restore Beam for chan : 0 : 89.6341 arcsec, 77.7728 arcsec, 83.0376 deg 2026-08-17 20:53:23 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:53:23 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:53:21.906286 End time: 2026-08-17 20:53:22.814852 2026-08-17 20:53:23 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:53:23 INFO tclean::::casa ########################################## 2026-08-17 20:53:23 INFO imstat::::casa ########################################## 2026-08-17 20:53:23 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:53:23 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:53:23 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:53:23 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:53:23 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:53:23 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:53:23 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:53:23 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:35.817, +49.49.24.973, I, 9.99968e+08Hz to 19:52:03.760, +50.23.24.993, I, 9.99968e+08Hz) 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:35.817, +49.49.24.973, I, 9.99968e+08Hz 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:03.760, +50.23.24.993, I, 9.99968e+08Hz 2026-08-17 20:53:23 INFO imstat:::: Values --- 2026-08-17 20:53:23 INFO imstat:::: -- flux density [flux]: -0.242513 Jy 2026-08-17 20:53:23 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:53:23 INFO imstat:::: -- maximum value [max]: 0.285872 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- minimum value [min]: -0.1468 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- position of max value (pixel) [maxpos]: [54, 120, 0, 0] 2026-08-17 20:53:23 INFO imstat:::: -- position of min value (pixel) [minpos]: [148, 28, 0, 0] 2026-08-17 20:53:23 INFO imstat:::: -- position of max value (world) [maxposf]: 19:54:51.516, +50.05.26.984, I, 9.99968e+08Hz 2026-08-17 20:53:23 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:33.445, +49.53.11.924, I, 9.99968e+08Hz 2026-08-17 20:53:23 INFO imstat:::: -- Sum of pixel values [sum]: -29.9309 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 233.452 Jy/beam.Jy/beam 2026-08-17 20:53:23 INFO imstat:::: Statistics --- 2026-08-17 20:53:23 INFO imstat:::: -- Mean of the pixel values [mean]: -0.00045671 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- Variance of the pixel values : 0.00356204 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.0596828 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- Root mean square [rms]: 0.0596841 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- Median of the pixel values [median]: -0.00646386 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 0.0391011 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- IQR [quartile]: 0.0789052 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- First quartile [q1]: -0.0432754 Jy/beam 2026-08-17 20:53:23 INFO imstat:::: -- Third quartile [q3]: 0.0356299 Jy/beam 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:53:23 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 -2.993095e+01 -4.567100e-04 5.968411e-02 5.968282e-02 -1.468002e-01 2.858716e-01 2026-08-17 20:53:23 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:53:22.818532 End time: 2026-08-17 20:53:22.852095 2026-08-17 20:53:23 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:53:23 INFO imstat::::casa ########################################## .2026-08-17 20:53:23 INFO tclean::::casa ########################################## 2026-08-17 20:53:23 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:53:23 INFO tclean::::casa tclean( vis='sim_data.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_orig', imsize=2048, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='wproject', facets=1, psfphasecenter='', wprojplanes=128, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:53:23 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:53:23 INFO SynthesisImagerVi2::selectData MS : sim_data.ms | [Opened in readonly mode] 2026-08-17 20:53:23 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:53:23 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_orig] : 2026-08-17 20:53:23 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_orig] : 2026-08-17 20:53:23 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:53:23 INFO SynthesisImagerVi2::defineImage Shape: [2048, 2048, 1, 1] Spectral: [9.99981e+08] at [0] with increment [1e+08] 2026-08-17 20:53:23 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_orig] with ftmachine : wprojectft 2026-08-17 20:53:23 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.3842 GB. Available mem.: 10.81 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:53:23 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:53:23 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_orig] : hogbom 2026-08-17 20:53:23 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:53:23 INFO task_tclean::WPConvFunc::findConvFunction W projection using 128 planes 2026-08-17 20:53:23 INFO task_tclean::WPConvFunc::findConvFunction Using maximum possible W = 6445.78 (wavelengths) 2026-08-17 20:53:23 INFO task_tclean::WPConvFunc::findConvFunction Typical wavelength = 0.299799 (m) 2026-08-17 20:53:23 INFO task_tclean::WPConvFunc::findConvFunction Scaling in W (at maximum W) = 0.399639 wavelengths per pixel 2026-08-17 20:53:57 INFO task_tclean::WPConvFunc::findConvFunction Convolution support = [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 24, 24, 24, 24, 24, 24, 24, 24, 24, 28, 28, 28, 28, 28, 28, 28, 32, 32, 32, 32, 32, 32, 36, 36, 36, 36, 36, 36, 40, 40, 40, 40, 40, 44, 44, 44, 44, 44, 48, 48, 48, 48, 52, 52, 52, 52, 52, 56, 56, 56, 56, 60, 60, 60, 60, 64, 64, 64, 64, 68, 68, 68, 72, 72, 72, 72, 76, 76, 76, 80, 80, 80, 80, 84, 84, 84, 88, 88, 88, 92, 92, 92, 96, 96, 96, 100, 100, 100, 104, 104, 108, 108, 108, 112, 112, 112, 116, 116] pixels in Fourier plane 2026-08-17 20:53:57 INFO task_tclean::WPConvFunc::findConvFunction Memory used in gridding function = 14 MB from maximum 15884 MB 2026-08-17 20:54:00 INFO task_tclean::SIImageStore::calcSensitivity [im_orig] Theoretical sensitivity (Jy/bm):0.00889437 2026-08-17 20:54:00 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.077424 2026-08-17 20:54:00 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.6975 arcsec, 77.5413 arcsec, -89.6046 deg 2026-08-17 20:54:00 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 4.94899 2026-08-17 20:54:03 INFO SynthesisDeconvolver::setupMask [im_orig] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:03 INFO SynthesisDeconvolver::setupMask [im_orig] Number of pixels in the clean mask : 4.1943e+06 out of a total of 4.1943e+06 pixels. [ 100 % ] 2026-08-17 20:54:04 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 4.94899, over full image : 4.94899 2026-08-17 20:54:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.5971387624740601, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:04 INFO SDAlgorithmBase::deconvolve [im_orig] Run Hogbom minor-cycle | CycleThreshold=0.597139, CycleNiter=20, Gain=0.3 2026-08-17 20:54:04 INFO SDAlgorithmBase::deconvolve [im_orig] iters=0->7 [7], model=0->4.6028, peakres=4.94899->0.435227, Reached cyclethreshold. 2026-08-17 20:54:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 7 iterations. 2026-08-17 20:54:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.45574, over full image : 0.45574 2026-08-17 20:54:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 13, 'cyclethreshold': 0.05498892068862915, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:09 INFO SDAlgorithmBase::deconvolve [im_orig] Run Hogbom minor-cycle | CycleThreshold=0.0549889, CycleNiter=13, Gain=0.3 2026-08-17 20:54:09 INFO SDAlgorithmBase::deconvolve [im_orig] iters=0->7 [7], model=4.6028->5.02619, peakres=0.45574->0.0435268, Reached cyclethreshold. 2026-08-17 20:54:09 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 14 iterations. 2026-08-17 20:54:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0416506, over full image : 0.0416506 2026-08-17 20:54:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 6, 'cyclethreshold': 0.005025505553930998, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:14 INFO SDAlgorithmBase::deconvolve [im_orig] Run Hogbom minor-cycle | CycleThreshold=0.00502551, CycleNiter=6, Gain=0.3 2026-08-17 20:54:14 INFO SDAlgorithmBase::deconvolve [im_orig] iters=0->6 [6], model=5.02619->5.04001, peakres=0.0416506->0.0226678, Reached cycleniter. 2026-08-17 20:54:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.022671, over full image : 0.022671 2026-08-17 20:54:19 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:19 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:19 INFO SDAlgorithmBase::restore [im_orig] : Restoring model image. 2026-08-17 20:54:19 INFO SIImageStore::restore Beam for chan : 0 : 88.6975 arcsec, 77.5413 arcsec, -89.6046 deg 2026-08-17 20:54:20 INFO tclean::::casa Searching for images with prefix 'im_orig'... Found these, writing history into them: ['im_orig.sumwt', 'im_orig.mask', 'im_orig.model', 'im_orig.pb', 'im_orig.image', 'im_orig.psf', 'im_orig.residual'] 2026-08-17 20:54:20 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:53:23.004111 End time: 2026-08-17 20:54:20.164159 2026-08-17 20:54:20 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:20 INFO tclean::::casa ########################################## 2026-08-17 20:54:20 INFO imstat::::casa ########################################## 2026-08-17 20:54:20 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:20 INFO imstat::::casa imstat( imagename='im_orig.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:20 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:20 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:20 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:20 INFO imstat::image::statistics Determining stats for image im_orig.image 2026-08-17 20:54:20 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:20 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [2047, 2047, 0, 0] (20:11:05.220, +38.21.11.967, I, 999980841.3Hz to 19:47:03.322, +42.54.02.996, I, 999980841.3Hz) 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [2047, 2047, 0, 0] 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 20:11:05.220, +38.21.11.967, I, 999980841.3Hz 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:47:03.322, +42.54.02.996, I, 999980841.3Hz 2026-08-17 20:54:20 INFO imstat:::: Values --- 2026-08-17 20:54:20 INFO imstat:::: -- flux density [flux]: 5.2713 Jy 2026-08-17 20:54:20 INFO imstat:::: -- number of points [npts]: 4.1943e+06 2026-08-17 20:54:20 INFO imstat:::: -- maximum value [max]: 4.97713 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- minimum value [min]: -0.022671 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- position of max value (pixel) [maxpos]: [1509, 773, 0, 0] 2026-08-17 20:54:20 INFO imstat:::: -- position of min value (pixel) [minpos]: [1708, 965, 0, 0] 2026-08-17 20:54:20 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.302, +40.06.02.372, I, 999980841.3Hz 2026-08-17 20:54:20 INFO imstat:::: -- position of min value (world) [minposf]: 19:51:28.525, +40.31.07.260, I, 999980841.3Hz 2026-08-17 20:54:20 INFO imstat:::: -- Sum of pixel values [sum]: 641.87 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1619.58 Jy/beam.Jy/beam 2026-08-17 20:54:20 INFO imstat:::: Statistics --- 2026-08-17 20:54:20 INFO imstat:::: -- Mean of the pixel values [mean]: 0.000153034 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- Variance of the pixel values : 0.000386116 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.0196498 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- Root mean square [rms]: 0.0196504 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- Median of the pixel values [median]: 4.61875e-06 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 0.003161 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- IQR [quartile]: 0.00632194 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- First quartile [q1]: -0.00315521 Jy/beam 2026-08-17 20:54:20 INFO imstat:::: -- Third quartile [q3]: 0.00316673 Jy/beam 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:20 INFO imstat::ImageStatsCalculator::statistics 4.194304e+06 6.418701e+02 1.530337e-04 1.965042e-02 1.964982e-02 -2.267100e-02 4.977134e+00 2026-08-17 20:54:20 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:20.171039 End time: 2026-08-17 20:54:20.495093 2026-08-17 20:54:20 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:20 INFO imstat::::casa ########################################## 2026-08-17 20:54:21 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:21 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:21 INFO ImageRegion::fromRecord+ [1499, 763, 0, 0] to [1519, 783, 0, 0] (19:53:57.382, +40.04.43.647, I, 999980841.3Hz to 19:53:43.216, +40.07.21.070, I, 999980841.3Hz) 2026-08-17 20:54:21 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:21 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:21 2026****** 2026-08-17 20:54:21 INFO ImageFitter::fit+ 2026-08-17 20:54:21 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:21 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_orig.image 2026-08-17 20:54:21 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:21 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:21 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:21 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:21 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:21 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:21 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:21 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:21 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.843, +40.05.23.013 to 19:53:46.759, +40.06.41.724) 2026-08-17 20:54:21 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29832 Jy 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.00459192 Jy 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85855 Jy 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00458731 Jy 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Fit on im_orig.image component 0 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.9885 +/- 0.0032 s (0.0367 arcsec along great circle) 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.0594 +/- 0.0281 arcsec 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- ra: 1509.4535 +/- 0.0046 pixels 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- dec: 772.7181 +/- 0.0035 pixels 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.4778 +/- 0.0014 arcmin 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.2915 +/- 0.0011 arcmin 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- position angle: 89.42 +/- 0.26 deg 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.70 arcsec 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.54 arcsec 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- position angle: -89.60 deg 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Component is a point source 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ An upper limit on its size cannot be determined 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- Integrated: 5.0049 +/- 0.0079 Jy 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- Peak: 5.0102 +/- 0.0046 Jy/beam 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:21 INFO ImageFitter::_fitLoop+ --- frequency: 999.9808 MHz (29.97982 cm) 2026-08-17 20:54:21 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:21 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:21 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40d06m00' ) 2026-08-17 20:54:21 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:21 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:21 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:21 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:21 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:21 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:21 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:21 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:21 INFO MSTransformManager::open Select data 2026-08-17 20:54:21 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:21 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:21 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-08-17 20:54:21 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:21 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:21 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:20.616515 End time: 2026-08-17 20:54:21.020408 2026-08-17 20:54:21 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:21 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:21 INFO tclean::::casa ########################################## 2026-08-17 20:54:21 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:21 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:21 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:21 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:21 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:21 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:21 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:21 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:21 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:21 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:21 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:21 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:21 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:21 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:22 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:22 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011158 2026-08-17 20:54:22 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:22 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:22 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:22 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:22 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:23 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:23 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:23 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:23 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:23 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:23 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:21.252723 End time: 2026-08-17 20:54:22.850844 2026-08-17 20:54:23 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:23 INFO tclean::::casa ########################################## 2026-08-17 20:54:23 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:23 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:23 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:23 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:23 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:23 2026****** 2026-08-17 20:54:23 INFO ImageFitter::fit+ 2026-08-17 20:54:23 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:23 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:23 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:23 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:23 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:23 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:23 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:23 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:23 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:23 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:23 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:23 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:23 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:23 INFO imstat::::casa ########################################## 2026-08-17 20:54:23 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:23 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:23 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:23 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:23 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:23 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:23 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:23 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:23 INFO imstat:::: Values --- 2026-08-17 20:54:23 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:23 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:23 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:23 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:23 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:23 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:23 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:23 INFO imstat:::: Statistics --- 2026-08-17 20:54:23 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-08-17 20:54:23 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:23 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777660e-05 4.999996e+00 2026-08-17 20:54:23 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:22.919387 End time: 2026-08-17 20:54:22.944883 2026-08-17 20:54:23 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:23 INFO imstat::::casa ########################################## 2026-08-17 20:54:23 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:23 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:23 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 02:40:24.0000' ) 2026-08-17 20:54:23 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:23 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:23 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:23 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:23 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:23 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:23 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:23 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:23 INFO MSTransformManager::open Select data 2026-08-17 20:54:23 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:23 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0000" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:54:23 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 02:40:24.0000' successfully parsed 2026-08-17 20:54:23 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:23 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:23 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:22.961036 End time: 2026-08-17 20:54:23.320332 2026-08-17 20:54:23 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:23 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:23 INFO tclean::::casa ########################################## 2026-08-17 20:54:23 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:23 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:23 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:23 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:23 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:23 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:23 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:23 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:23 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:23 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:23 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:23 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:23 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:23 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:24 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:24 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.015486 2026-08-17 20:54:24 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:24 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:24 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:24 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:24 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:25 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:25 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:25 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:25 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:25 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:25 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:23.345439 End time: 2026-08-17 20:54:25.099754 2026-08-17 20:54:25 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:25 INFO tclean::::casa ########################################## 2026-08-17 20:54:25 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:25 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:25 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:25 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:25 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:25 2026****** 2026-08-17 20:54:25 INFO ImageFitter::fit+ 2026-08-17 20:54:25 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:25 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:25 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:25 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:25 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:25 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:25 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:25 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:25 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:25 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:25 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:25 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:25 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:25 INFO imstat::::casa ########################################## 2026-08-17 20:54:25 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:25 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:25 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:25 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:25 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:25 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:25 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:25 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:25 INFO imstat:::: Values --- 2026-08-17 20:54:25 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:25 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:25 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:25 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:25 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:25 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:25 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:25 INFO imstat:::: Statistics --- 2026-08-17 20:54:25 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-08-17 20:54:25 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:25 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777660e-05 4.999996e+00 2026-08-17 20:54:25 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:25.156122 End time: 2026-08-17 20:54:25.178591 2026-08-17 20:54:25 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:25 INFO imstat::::casa ########################################## 2026-08-17 20:54:25 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:25 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:25 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40.100000000deg' ) 2026-08-17 20:54:25 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:25 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:25 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:25 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:25 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:25 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:25 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:25 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:25 INFO MSTransformManager::open Select data 2026-08-17 20:54:25 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:25 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:25 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40.100000000deg' successfully parsed 2026-08-17 20:54:25 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:26 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:26 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:25.192266 End time: 2026-08-17 20:54:25.617442 2026-08-17 20:54:26 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:26 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:26 INFO tclean::::casa ########################################## 2026-08-17 20:54:26 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:26 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:26 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:26 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:26 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:26 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:26 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:26 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:26 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:26 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:26 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:26 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:26 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:26 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:26 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:26 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.012426 2026-08-17 20:54:26 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:26 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:26 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:26 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:26 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:27 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:27 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:27 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:27 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:27 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:27 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:25.642839 End time: 2026-08-17 20:54:27.033835 2026-08-17 20:54:27 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:27 INFO tclean::::casa ########################################## 2026-08-17 20:54:27 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:27 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:27 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:27 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:27 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:27 2026****** 2026-08-17 20:54:27 INFO ImageFitter::fit+ 2026-08-17 20:54:27 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:27 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:27 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:27 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:27 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:27 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:27 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:27 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:27 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:27 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:27 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:27 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:27 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:27 INFO imstat::::casa ########################################## 2026-08-17 20:54:27 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:27 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:27 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:27 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:27 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:27 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:27 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:27 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:27 INFO imstat:::: Values --- 2026-08-17 20:54:27 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:27 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:27 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:27 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:27 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:27 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:27 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:27 INFO imstat:::: Statistics --- 2026-08-17 20:54:27 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-08-17 20:54:27 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:27 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777660e-05 4.999996e+00 2026-08-17 20:54:27 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:27.074067 End time: 2026-08-17 20:54:27.095073 2026-08-17 20:54:27 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:27 INFO imstat::::casa ########################################## 2026-08-17 20:54:27 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:27 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:27 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 0.699877030rad' ) 2026-08-17 20:54:27 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:27 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:27 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:27 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:27 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:27 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:27 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:27 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:27 INFO MSTransformManager::open Select data 2026-08-17 20:54:27 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:27 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:27 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 0.699877030rad' successfully parsed 2026-08-17 20:54:27 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:28 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:28 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:27.108091 End time: 2026-08-17 20:54:27.559527 2026-08-17 20:54:28 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:28 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:28 INFO tclean::::casa ########################################## 2026-08-17 20:54:28 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:28 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:28 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:28 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:28 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:28 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:28 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:28 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:28 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:28 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:28 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:28 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:28 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:28 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.014341 2026-08-17 20:54:28 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:28 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:28 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:28 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:28 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:28 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:28 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:28 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:28 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:28 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:28 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:28 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:28 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:28 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:54:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:29 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:29 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:29 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:29 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:29 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:29 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:27.616228 End time: 2026-08-17 20:54:29.131356 2026-08-17 20:54:29 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:29 INFO tclean::::casa ########################################## 2026-08-17 20:54:29 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:29 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:29 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:29 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:29 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:29 2026****** 2026-08-17 20:54:29 INFO ImageFitter::fit+ 2026-08-17 20:54:29 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:29 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:29 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:29 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:29 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:29 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:29 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:29 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:29 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:29 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:29 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:29 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126486 Jy 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:29 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:29 INFO imstat::::casa ########################################## 2026-08-17 20:54:29 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:29 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:29 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:29 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:29 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:29 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:29 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:29 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:29 INFO imstat:::: Values --- 2026-08-17 20:54:29 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:29 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:29 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- minimum value [min]: -7.77764e-05 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:29 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:54:29 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:29 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:54:29 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:29 INFO imstat:::: Statistics --- 2026-08-17 20:54:29 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- Median of the pixel values [median]: -1.86664e-05 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- IQR [quartile]: 3.56255e-05 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- First quartile [q1]: -3.45078e-05 Jy/beam 2026-08-17 20:54:29 INFO imstat:::: -- Third quartile [q3]: 1.11764e-06 Jy/beam 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:29 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777640e-05 4.999996e+00 2026-08-17 20:54:29 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:29.184698 End time: 2026-08-17 20:54:29.204687 2026-08-17 20:54:29 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:29 INFO imstat::::casa ########################################## 2026-08-17 20:54:29 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:29 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:29 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19:53:50.0000 40d06m00' ) 2026-08-17 20:54:29 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:29 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:29 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:29 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:29 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:29 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:29 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:29 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:29 INFO MSTransformManager::open Select data 2026-08-17 20:54:29 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:29 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:29 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19:53:50.0000 40d06m00' successfully parsed 2026-08-17 20:54:29 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:30 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:30 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:29.217524 End time: 2026-08-17 20:54:29.657245 2026-08-17 20:54:30 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:30 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:30 INFO tclean::::casa ########################################## 2026-08-17 20:54:30 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:30 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:30 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:30 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:30 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:30 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:30 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:30 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:30 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:30 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:30 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:30 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:30 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:30 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010353 2026-08-17 20:54:30 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:30 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:30 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:30 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:30 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:30 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:30 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:30 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:30 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:30 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:30 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:30 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:30 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:31 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:31 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:31 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:31 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:31 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:31 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:29.681136 End time: 2026-08-17 20:54:31.161044 2026-08-17 20:54:31 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:31 INFO tclean::::casa ########################################## 2026-08-17 20:54:31 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:31 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:31 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:31 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:31 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:31 2026****** 2026-08-17 20:54:31 INFO ImageFitter::fit+ 2026-08-17 20:54:31 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:31 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:31 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:31 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:31 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:31 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:31 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:31 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:31 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:31 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:31 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:31 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:31 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:31 INFO imstat::::casa ########################################## 2026-08-17 20:54:31 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:31 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:31 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:31 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:31 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:31 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:31 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:31 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:31 INFO imstat:::: Values --- 2026-08-17 20:54:31 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:31 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:31 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:31 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:31 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:31 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:31 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:31 INFO imstat:::: Statistics --- 2026-08-17 20:54:31 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-08-17 20:54:31 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:31 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777660e-05 4.999996e+00 2026-08-17 20:54:31 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:31.235205 End time: 2026-08-17 20:54:31.262481 2026-08-17 20:54:31 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:31 INFO imstat::::casa ########################################## 2026-08-17 20:54:31 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:31 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:31 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19:53:50.0000 02:40:24.0000' ) 2026-08-17 20:54:31 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:31 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:31 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:31 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:31 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:31 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:31 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:31 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:31 INFO MSTransformManager::open Select data 2026-08-17 20:54:31 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:32 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0000" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:54:32 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19:53:50.0000 02:40:24.0000' successfully parsed 2026-08-17 20:54:32 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:32 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:32 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:31.279233 End time: 2026-08-17 20:54:32.150506 2026-08-17 20:54:32 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:32 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:32 INFO tclean::::casa ########################################## 2026-08-17 20:54:32 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:32 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:32 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:32 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:32 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:32 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:32 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:32 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:32 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:32 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:32 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:32 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:32 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:32 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:32 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:32 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011223 2026-08-17 20:54:32 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:32 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:33 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:33 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:33 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:34 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:34 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:34 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:34 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:34 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:34 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:34 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:32.192167 End time: 2026-08-17 20:54:33.778728 2026-08-17 20:54:34 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:34 INFO tclean::::casa ########################################## 2026-08-17 20:54:34 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:34 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:34 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:34 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:34 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:34 2026****** 2026-08-17 20:54:34 INFO ImageFitter::fit+ 2026-08-17 20:54:34 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:34 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:34 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:34 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:34 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:34 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:34 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:34 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:34 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:34 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:34 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:34 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:34 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:34 INFO imstat::::casa ########################################## 2026-08-17 20:54:34 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:34 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:34 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:34 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:34 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:34 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:34 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:34 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:34 INFO imstat:::: Values --- 2026-08-17 20:54:34 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:34 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:34 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:34 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:34 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:34 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:34 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:34 INFO imstat:::: Statistics --- 2026-08-17 20:54:34 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-08-17 20:54:34 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:34 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777660e-05 4.999996e+00 2026-08-17 20:54:34 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:33.827327 End time: 2026-08-17 20:54:33.853812 2026-08-17 20:54:34 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:34 INFO imstat::::casa ########################################## 2026-08-17 20:54:34 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:34 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:34 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19:53:50.0000 40.100000000deg' ) 2026-08-17 20:54:34 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:34 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:34 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:34 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:34 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:34 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:34 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:34 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:34 INFO MSTransformManager::open Select data 2026-08-17 20:54:34 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:34 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:34 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19:53:50.0000 40.100000000deg' successfully parsed 2026-08-17 20:54:34 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:34 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:34 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:33.877589 End time: 2026-08-17 20:54:34.343555 2026-08-17 20:54:34 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:34 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:34 INFO tclean::::casa ########################################## 2026-08-17 20:54:34 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:34 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:34 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:34 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:34 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:34 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:34 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:35 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:35 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:35 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:35 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:35 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:35 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:35 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:35 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:35 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.018985 2026-08-17 20:54:35 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:35 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:35 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:35 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:35 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:36 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:36 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:36 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:36 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:36 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:36 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:36 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:36 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:36 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:36 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:36 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:34.369550 End time: 2026-08-17 20:54:35.965148 2026-08-17 20:54:36 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:36 INFO tclean::::casa ########################################## 2026-08-17 20:54:36 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:36 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:36 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:36 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:36 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:36 2026****** 2026-08-17 20:54:36 INFO ImageFitter::fit+ 2026-08-17 20:54:36 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:36 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:36 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:36 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:36 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:36 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:36 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:36 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:36 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:36 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:36 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:36 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:36 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:36 INFO imstat::::casa ########################################## 2026-08-17 20:54:36 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:36 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:36 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:36 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:36 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:36 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:36 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:36 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:36 INFO imstat:::: Values --- 2026-08-17 20:54:36 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:36 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:36 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:36 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:36 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:36 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:36 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:36 INFO imstat:::: Statistics --- 2026-08-17 20:54:36 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-08-17 20:54:36 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:36 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777660e-05 4.999996e+00 2026-08-17 20:54:36 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:36.009114 End time: 2026-08-17 20:54:36.035100 2026-08-17 20:54:36 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:36 INFO imstat::::casa ########################################## 2026-08-17 20:54:36 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:36 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:36 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19:53:50.0000 0.699877030rad' ) 2026-08-17 20:54:36 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:36 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:36 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:36 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:36 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:36 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:36 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:36 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:36 INFO MSTransformManager::open Select data 2026-08-17 20:54:36 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:36 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:36 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19:53:50.0000 0.699877030rad' successfully parsed 2026-08-17 20:54:36 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:37 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:37 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:36.058900 End time: 2026-08-17 20:54:36.556369 2026-08-17 20:54:37 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:37 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:37 INFO tclean::::casa ########################################## 2026-08-17 20:54:37 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:37 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:37 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:37 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:37 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:37 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:37 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:37 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:37 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:37 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:37 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:37 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:37 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:37 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:37 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:37 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.014905 2026-08-17 20:54:37 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:37 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:37 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:37 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:37 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:38 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:38 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:38 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:38 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:54:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:38 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:38 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:38 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:38 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:38 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:38 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:38 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:38 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:36.589220 End time: 2026-08-17 20:54:38.200123 2026-08-17 20:54:38 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:38 INFO tclean::::casa ########################################## 2026-08-17 20:54:38 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:38 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:38 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:38 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:38 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:38 2026****** 2026-08-17 20:54:38 INFO ImageFitter::fit+ 2026-08-17 20:54:38 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:38 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:38 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:38 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:38 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:38 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:38 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:38 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:38 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:38 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:38 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:38 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126486 Jy 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:38 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:38 INFO imstat::::casa ########################################## 2026-08-17 20:54:38 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:38 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:38 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:38 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:38 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:38 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:38 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:38 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:38 INFO imstat:::: Values --- 2026-08-17 20:54:38 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:38 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:38 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- minimum value [min]: -7.77764e-05 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:38 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:54:38 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:38 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:54:38 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:38 INFO imstat:::: Statistics --- 2026-08-17 20:54:38 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- Median of the pixel values [median]: -1.86664e-05 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- IQR [quartile]: 3.56255e-05 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- First quartile [q1]: -3.45078e-05 Jy/beam 2026-08-17 20:54:38 INFO imstat:::: -- Third quartile [q3]: 1.11764e-06 Jy/beam 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:38 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777640e-05 4.999996e+00 2026-08-17 20:54:38 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:38.274101 End time: 2026-08-17 20:54:38.300717 2026-08-17 20:54:38 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:38 INFO imstat::::casa ########################################## 2026-08-17 20:54:38 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:38 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:38 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 298.458333333deg 40d06m00' ) 2026-08-17 20:54:38 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:38 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:38 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:38 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:38 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:38 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:38 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:38 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:38 INFO MSTransformManager::open Select data 2026-08-17 20:54:38 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:39 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:39 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 298.458333333deg 40d06m00' successfully parsed 2026-08-17 20:54:39 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:39 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:39 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:38.317132 End time: 2026-08-17 20:54:38.720534 2026-08-17 20:54:39 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:39 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:39 INFO tclean::::casa ########################################## 2026-08-17 20:54:39 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:39 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:39 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:39 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:39 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:39 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:39 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:39 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:39 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:39 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:39 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:39 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:39 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:39 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:39 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:39 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010991 2026-08-17 20:54:39 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:39 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:39 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:39 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:39 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:39 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:40 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:40 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:40 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:40 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:40 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:54:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:40 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:40 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:40 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:40 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:40 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:40 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:40 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:38.763924 End time: 2026-08-17 20:54:40.348084 2026-08-17 20:54:40 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:40 INFO tclean::::casa ########################################## 2026-08-17 20:54:40 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:40 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:40 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:40 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:40 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:40 2026****** 2026-08-17 20:54:40 INFO ImageFitter::fit+ 2026-08-17 20:54:40 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:40 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:40 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:40 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:40 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:40 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:40 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:40 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:40 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:40 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:40 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:40 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:40 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:40 INFO imstat::::casa ########################################## 2026-08-17 20:54:40 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:40 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:40 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:40 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:40 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:40 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:40 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:40 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:40 INFO imstat:::: Values --- 2026-08-17 20:54:40 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:40 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:40 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- minimum value [min]: -7.77758e-05 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:40 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:40 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:40 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:40 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:40 INFO imstat:::: Statistics --- 2026-08-17 20:54:40 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- Median of the pixel values [median]: -1.86641e-05 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- IQR [quartile]: 3.56208e-05 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- First quartile [q1]: -3.45075e-05 Jy/beam 2026-08-17 20:54:40 INFO imstat:::: -- Third quartile [q3]: 1.11336e-06 Jy/beam 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:40 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777580e-05 4.999996e+00 2026-08-17 20:54:40 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:40.407270 End time: 2026-08-17 20:54:40.431717 2026-08-17 20:54:40 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:40 INFO imstat::::casa ########################################## 2026-08-17 20:54:40 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:40 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:40 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 298.458333333deg 02:40:24.0000' ) 2026-08-17 20:54:40 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:40 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:40 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:40 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:40 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:40 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:40 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:40 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:40 INFO MSTransformManager::open Select data 2026-08-17 20:54:40 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:41 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0000" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:54:41 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 298.458333333deg 02:40:24.0000' successfully parsed 2026-08-17 20:54:41 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:41 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:41 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:40.446541 End time: 2026-08-17 20:54:40.899328 2026-08-17 20:54:41 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:41 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:41 INFO tclean::::casa ########################################## 2026-08-17 20:54:41 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:41 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:41 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:41 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:41 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:41 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:41 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:41 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:41 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:41 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:41 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:41 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:41 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:41 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:41 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:41 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010926 2026-08-17 20:54:41 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:41 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:41 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:41 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:41 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:41 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:54:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:42 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:42 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:42 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:42 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:42 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:42 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:40.924340 End time: 2026-08-17 20:54:42.323999 2026-08-17 20:54:42 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:42 INFO tclean::::casa ########################################## 2026-08-17 20:54:42 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:42 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:42 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:42 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:42 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:42 2026****** 2026-08-17 20:54:42 INFO ImageFitter::fit+ 2026-08-17 20:54:42 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:42 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:42 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:42 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:42 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:42 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:42 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:42 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:42 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:42 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:42 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:42 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:42 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:42 INFO imstat::::casa ########################################## 2026-08-17 20:54:42 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:42 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:42 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:42 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:42 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:42 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:42 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:42 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:42 INFO imstat:::: Values --- 2026-08-17 20:54:42 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:42 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:42 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- minimum value [min]: -7.77758e-05 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:42 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:42 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:42 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:42 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:42 INFO imstat:::: Statistics --- 2026-08-17 20:54:42 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- Median of the pixel values [median]: -1.86641e-05 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- IQR [quartile]: 3.56208e-05 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- First quartile [q1]: -3.45075e-05 Jy/beam 2026-08-17 20:54:42 INFO imstat:::: -- Third quartile [q3]: 1.11336e-06 Jy/beam 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:42 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777580e-05 4.999996e+00 2026-08-17 20:54:42 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:42.369580 End time: 2026-08-17 20:54:42.391214 2026-08-17 20:54:42 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:42 INFO imstat::::casa ########################################## 2026-08-17 20:54:42 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:42 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:42 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 298.458333333deg 40.100000000deg' ) 2026-08-17 20:54:42 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:42 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:42 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:42 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:42 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:42 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:42 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:42 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:42 INFO MSTransformManager::open Select data 2026-08-17 20:54:42 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:43 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:43 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 298.458333333deg 40.100000000deg' successfully parsed 2026-08-17 20:54:43 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:43 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:43 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:42.405357 End time: 2026-08-17 20:54:42.786173 2026-08-17 20:54:43 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:43 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:43 INFO tclean::::casa ########################################## 2026-08-17 20:54:43 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:43 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:43 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:43 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:43 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:43 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:43 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:43 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:43 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:43 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:43 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:43 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:43 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:43 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:43 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:43 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011702 2026-08-17 20:54:43 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:43 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:43 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:43 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:43 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:43 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:43 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:43 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:43 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:43 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:54:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:44 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:44 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:44 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:44 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:44 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:44 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:42.809949 End time: 2026-08-17 20:54:44.048448 2026-08-17 20:54:44 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:44 INFO tclean::::casa ########################################## 2026-08-17 20:54:44 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:44 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:44 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:44 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:44 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:44 2026****** 2026-08-17 20:54:44 INFO ImageFitter::fit+ 2026-08-17 20:54:44 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:44 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:44 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:44 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:44 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:44 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:44 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:44 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:44 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:44 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:44 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:44 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:44 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:44 INFO imstat::::casa ########################################## 2026-08-17 20:54:44 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:44 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:44 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:44 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:44 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:44 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:44 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:44 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:44 INFO imstat:::: Values --- 2026-08-17 20:54:44 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:44 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:44 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- minimum value [min]: -7.77758e-05 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:44 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:44 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:44 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:44 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:44 INFO imstat:::: Statistics --- 2026-08-17 20:54:44 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- Median of the pixel values [median]: -1.86641e-05 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- IQR [quartile]: 3.56208e-05 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- First quartile [q1]: -3.45075e-05 Jy/beam 2026-08-17 20:54:44 INFO imstat:::: -- Third quartile [q3]: 1.11336e-06 Jy/beam 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:44 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777580e-05 4.999996e+00 2026-08-17 20:54:44 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:44.091624 End time: 2026-08-17 20:54:44.109592 2026-08-17 20:54:44 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:44 INFO imstat::::casa ########################################## 2026-08-17 20:54:44 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:44 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:44 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 298.458333333deg 0.699877030rad' ) 2026-08-17 20:54:44 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:44 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:44 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:44 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:44 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:44 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:44 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:44 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:44 INFO MSTransformManager::open Select data 2026-08-17 20:54:44 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:44 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:44 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 298.458333333deg 0.699877030rad' successfully parsed 2026-08-17 20:54:44 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:44 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:44 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:44.122200 End time: 2026-08-17 20:54:44.480535 2026-08-17 20:54:44 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:44 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:45 INFO tclean::::casa ########################################## 2026-08-17 20:54:45 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:45 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:45 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:45 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:45 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:45 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:45 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:45 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:45 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:45 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:45 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:45 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:45 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:45 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:45 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:45 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.023889 2026-08-17 20:54:45 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:45 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:45 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:45 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:45 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:45 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:45 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:45 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:45 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:45 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:45 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:45 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:45 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:45 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:54:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:46 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:46 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:46 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:46 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:46 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:46 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:44.518447 End time: 2026-08-17 20:54:46.120128 2026-08-17 20:54:46 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:46 INFO tclean::::casa ########################################## 2026-08-17 20:54:46 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:46 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:46 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:46 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:46 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:46 2026****** 2026-08-17 20:54:46 INFO ImageFitter::fit+ 2026-08-17 20:54:46 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:46 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:46 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:46 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:46 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:46 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:46 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:46 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:46 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:46 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:46 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:46 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126487 Jy 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:46 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:46 INFO imstat::::casa ########################################## 2026-08-17 20:54:46 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:46 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:46 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:46 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:46 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:46 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:46 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:46 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:46 INFO imstat:::: Values --- 2026-08-17 20:54:46 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:46 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:46 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- minimum value [min]: -7.77738e-05 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:46 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:46 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:46 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:54:46 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:46 INFO imstat:::: Statistics --- 2026-08-17 20:54:46 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- Median of the pixel values [median]: -1.86662e-05 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73577e-05 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- IQR [quartile]: 3.56242e-05 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- First quartile [q1]: -3.45075e-05 Jy/beam 2026-08-17 20:54:46 INFO imstat:::: -- Third quartile [q3]: 1.11673e-06 Jy/beam 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:46 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777377e-05 4.999996e+00 2026-08-17 20:54:46 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:46.197241 End time: 2026-08-17 20:54:46.230524 2026-08-17 20:54:46 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:46 INFO imstat::::casa ########################################## 2026-08-17 20:54:46 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:46 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:46 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 5.209080597rad 40d06m00' ) 2026-08-17 20:54:46 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:46 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:46 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:46 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:46 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:46 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:46 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:46 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:46 INFO MSTransformManager::open Select data 2026-08-17 20:54:46 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:46 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:46 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 5.209080597rad 40d06m00' successfully parsed 2026-08-17 20:54:46 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:47 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:47 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:46.244623 End time: 2026-08-17 20:54:46.604108 2026-08-17 20:54:47 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:47 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:47 INFO tclean::::casa ########################################## 2026-08-17 20:54:47 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:47 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:47 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:47 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:47 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:47 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:47 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:47 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:47 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:47 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:47 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:47 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:47 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:47 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:47 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:47 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011062 2026-08-17 20:54:47 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:47 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:47 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:47 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:47 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:47 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:47 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:47 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:47 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:47 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:47 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:47 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:47 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:47 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:47 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:47 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:47 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:47 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:48 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:48 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:48 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:48 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:48 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:48 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:46.636093 End time: 2026-08-17 20:54:47.978967 2026-08-17 20:54:48 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:48 INFO tclean::::casa ########################################## 2026-08-17 20:54:48 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:48 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:48 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:48 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:48 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:48 2026****** 2026-08-17 20:54:48 INFO ImageFitter::fit+ 2026-08-17 20:54:48 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:48 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:48 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:48 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:48 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:48 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:48 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:48 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:48 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:48 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:48 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:48 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:48 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:48 INFO imstat::::casa ########################################## 2026-08-17 20:54:48 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:48 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:48 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:48 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:48 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:48 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:48 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:48 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:48 INFO imstat:::: Values --- 2026-08-17 20:54:48 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:48 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:48 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- minimum value [min]: -7.77801e-05 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:48 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:54:48 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:48 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:54:48 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:48 INFO imstat:::: Statistics --- 2026-08-17 20:54:48 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- Median of the pixel values [median]: -1.86723e-05 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73614e-05 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- IQR [quartile]: 3.55964e-05 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- First quartile [q1]: -3.45025e-05 Jy/beam 2026-08-17 20:54:48 INFO imstat:::: -- Third quartile [q3]: 1.09391e-06 Jy/beam 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:48 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778010e-05 4.999996e+00 2026-08-17 20:54:48 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:48.019849 End time: 2026-08-17 20:54:48.039125 2026-08-17 20:54:48 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:48 INFO imstat::::casa ########################################## 2026-08-17 20:54:48 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:48 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:48 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 5.209080597rad 02:40:24.0000' ) 2026-08-17 20:54:48 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:48 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:48 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:48 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:48 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:48 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:48 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:48 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:48 INFO MSTransformManager::open Select data 2026-08-17 20:54:48 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:48 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0000" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:54:48 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 5.209080597rad 02:40:24.0000' successfully parsed 2026-08-17 20:54:48 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:48 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:48 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:48.052183 End time: 2026-08-17 20:54:48.460240 2026-08-17 20:54:48 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:48 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:48 INFO tclean::::casa ########################################## 2026-08-17 20:54:48 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:48 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:48 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:48 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:48 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:49 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:49 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:49 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:49 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:49 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:49 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:49 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:49 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:49 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:49 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:49 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.017375 2026-08-17 20:54:49 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:49 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:49 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:49 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:49 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:49 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:49 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:49 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:49 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:49 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:49 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:49 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:49 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:49 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:49 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:50 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:50 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:50 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:50 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:50 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:50 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:50 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:50 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:48.486152 End time: 2026-08-17 20:54:49.967206 2026-08-17 20:54:50 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:50 INFO tclean::::casa ########################################## 2026-08-17 20:54:50 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:50 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:50 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:50 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:50 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:50 2026****** 2026-08-17 20:54:50 INFO ImageFitter::fit+ 2026-08-17 20:54:50 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:50 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:50 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:50 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:50 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:50 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:50 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:50 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:50 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:50 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:50 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:50 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:50 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:50 INFO imstat::::casa ########################################## 2026-08-17 20:54:50 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:50 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:50 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:50 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:50 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:50 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:50 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:50 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:50 INFO imstat:::: Values --- 2026-08-17 20:54:50 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:50 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:50 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- minimum value [min]: -7.77801e-05 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:50 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:54:50 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:50 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:54:50 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:50 INFO imstat:::: Statistics --- 2026-08-17 20:54:50 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- Median of the pixel values [median]: -1.86723e-05 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73614e-05 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- IQR [quartile]: 3.55964e-05 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- First quartile [q1]: -3.45025e-05 Jy/beam 2026-08-17 20:54:50 INFO imstat:::: -- Third quartile [q3]: 1.09391e-06 Jy/beam 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:50 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778010e-05 4.999996e+00 2026-08-17 20:54:50 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:50.019186 End time: 2026-08-17 20:54:50.038360 2026-08-17 20:54:50 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:50 INFO imstat::::casa ########################################## 2026-08-17 20:54:50 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:50 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:50 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 5.209080597rad 40.100000000deg' ) 2026-08-17 20:54:50 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:50 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:50 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:50 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:50 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:50 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:50 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:50 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:50 INFO MSTransformManager::open Select data 2026-08-17 20:54:50 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:50 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:50 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 5.209080597rad 40.100000000deg' successfully parsed 2026-08-17 20:54:50 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:50 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:50 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:50.052038 End time: 2026-08-17 20:54:50.486849 2026-08-17 20:54:50 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:50 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:51 INFO tclean::::casa ########################################## 2026-08-17 20:54:51 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:51 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:51 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:51 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:51 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:51 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:51 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:51 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:51 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:51 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:51 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:51 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:51 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:51 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:51 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:51 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.020001 2026-08-17 20:54:51 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:51 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:51 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:51 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:51 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:51 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:51 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:51 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:51 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:51 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:52 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:52 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:52 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:52 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:52 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:52 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:52 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:50.510840 End time: 2026-08-17 20:54:52.059537 2026-08-17 20:54:52 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:52 INFO tclean::::casa ########################################## 2026-08-17 20:54:52 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:52 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:52 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:52 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:52 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:52 2026****** 2026-08-17 20:54:52 INFO ImageFitter::fit+ 2026-08-17 20:54:52 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:52 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:52 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:52 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:52 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:52 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:52 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:52 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:52 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:52 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:52 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:52 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:52 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:52 INFO imstat::::casa ########################################## 2026-08-17 20:54:52 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:52 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:52 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:52 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:52 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:52 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:52 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:52 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:52 INFO imstat:::: Values --- 2026-08-17 20:54:52 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:52 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:52 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- minimum value [min]: -7.77801e-05 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:52 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:54:52 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:52 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:54:52 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:52 INFO imstat:::: Statistics --- 2026-08-17 20:54:52 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- Median of the pixel values [median]: -1.86723e-05 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73614e-05 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- IQR [quartile]: 3.55964e-05 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- First quartile [q1]: -3.45025e-05 Jy/beam 2026-08-17 20:54:52 INFO imstat:::: -- Third quartile [q3]: 1.09391e-06 Jy/beam 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:52 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778010e-05 4.999996e+00 2026-08-17 20:54:52 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:52.120065 End time: 2026-08-17 20:54:52.143981 2026-08-17 20:54:52 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:52 INFO imstat::::casa ########################################## 2026-08-17 20:54:52 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:52 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:52 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 5.209080597rad 0.699877030rad' ) 2026-08-17 20:54:52 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:52 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:52 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:52 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:52 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:52 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:52 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:52 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:52 INFO MSTransformManager::open Select data 2026-08-17 20:54:52 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:52 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:52 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 5.209080597rad 0.699877030rad' successfully parsed 2026-08-17 20:54:52 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:53 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:53 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:52.158697 End time: 2026-08-17 20:54:52.553694 2026-08-17 20:54:53 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:53 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:53 INFO tclean::::casa ########################################## 2026-08-17 20:54:53 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:53 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:53 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:53 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:53 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:53 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:53 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:53 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:53 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:53 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:53 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:53 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:53 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:53 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:53 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:53 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013766 2026-08-17 20:54:53 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:53 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:53 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:53 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:53 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:53 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:53 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:53 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:53 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:54:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:54 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:54 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:54 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:54 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:54 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:54 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:52.578187 End time: 2026-08-17 20:54:54.182829 2026-08-17 20:54:54 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:54 INFO tclean::::casa ########################################## 2026-08-17 20:54:54 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:54 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:54 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:54 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:54 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:54 2026****** 2026-08-17 20:54:54 INFO ImageFitter::fit+ 2026-08-17 20:54:54 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:54 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:54 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:54 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:54 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:54 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:54 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:54 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:54 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:54 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:54 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:54 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126484 Jy 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:54 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:54 INFO imstat::::casa ########################################## 2026-08-17 20:54:54 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:54 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:54 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:54 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:54 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:54 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:54 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:54 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:54 INFO imstat:::: Values --- 2026-08-17 20:54:54 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:54 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:54 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- minimum value [min]: -7.77793e-05 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:54 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:54:54 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:54 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:54:54 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:54 INFO imstat:::: Statistics --- 2026-08-17 20:54:54 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- Median of the pixel values [median]: -1.86714e-05 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73592e-05 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- IQR [quartile]: 3.55982e-05 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- First quartile [q1]: -3.45035e-05 Jy/beam 2026-08-17 20:54:54 INFO imstat:::: -- Third quartile [q3]: 1.09469e-06 Jy/beam 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:54 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777928e-05 4.999996e+00 2026-08-17 20:54:54 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:54.223852 End time: 2026-08-17 20:54:54.242979 2026-08-17 20:54:54 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:54 INFO imstat::::casa ########################################## 2026-08-17 20:54:54 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:54 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:54 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19h53m49.9980 40d06m0.0019' ) 2026-08-17 20:54:54 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:54 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:54 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:54 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:54 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:54 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:54 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:54 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:54 INFO MSTransformManager::open Select data 2026-08-17 20:54:54 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:54 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:54 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m49.9980 40d06m0.0019' successfully parsed 2026-08-17 20:54:54 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:55 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:55 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:54.256600 End time: 2026-08-17 20:54:54.638513 2026-08-17 20:54:55 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:55 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:55 INFO tclean::::casa ########################################## 2026-08-17 20:54:55 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:55 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:55 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:55 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:55 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:55 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:55 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:55 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:55 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:55 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:55 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:55 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:55 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:55 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:55 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:55 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011194 2026-08-17 20:54:55 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:55 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:55 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:55 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:55 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:55 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:55 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:55 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:55 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:55 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:55 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:55 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:55 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:55 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:54:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:56 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:56 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:56 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:56 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:56 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:56 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:54.663953 End time: 2026-08-17 20:54:55.947086 2026-08-17 20:54:56 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:56 INFO tclean::::casa ########################################## 2026-08-17 20:54:56 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:56 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:56 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:56 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:56 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:56 2026****** 2026-08-17 20:54:56 INFO ImageFitter::fit+ 2026-08-17 20:54:56 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:56 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:56 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:56 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:56 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:56 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:56 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:56 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:56 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:56 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:56 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:54:56 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:56 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:56 INFO imstat::::casa ########################################## 2026-08-17 20:54:56 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:56 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:56 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:56 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:56 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:56 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:56 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:56 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:56 INFO imstat:::: Values --- 2026-08-17 20:54:56 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:56 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:56 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:56 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:54:56 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:56 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:54:56 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:56 INFO imstat:::: Statistics --- 2026-08-17 20:54:56 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- Median of the pixel values [median]: -1.86712e-05 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73636e-05 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- IQR [quartile]: 3.56293e-05 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- First quartile [q1]: -3.45095e-05 Jy/beam 2026-08-17 20:54:56 INFO imstat:::: -- Third quartile [q3]: 1.1198e-06 Jy/beam 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:56 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.779541e-05 4.999996e+00 2026-08-17 20:54:56 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:55.994578 End time: 2026-08-17 20:54:56.013601 2026-08-17 20:54:56 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:56 INFO imstat::::casa ########################################## 2026-08-17 20:54:56 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:56 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:56 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19h53m49.9980 02:40:24.0001' ) 2026-08-17 20:54:56 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:56 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:56 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:56 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:56 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:56 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:56 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:56 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:56 INFO MSTransformManager::open Select data 2026-08-17 20:54:56 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:56 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0001" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:54:56 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m49.9980 02:40:24.0001' successfully parsed 2026-08-17 20:54:56 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:56 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:56 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:56.025548 End time: 2026-08-17 20:54:56.456707 2026-08-17 20:54:56 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:56 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:56 INFO tclean::::casa ########################################## 2026-08-17 20:54:56 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:56 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:56 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:56 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:56 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:57 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:57 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:57 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:57 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:57 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:57 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:57 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:57 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:57 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:57 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:57 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.016763 2026-08-17 20:54:57 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:57 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:57 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:57 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:57 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:57 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:57 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:57 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:54:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:54:57 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:54:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:54:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:54:57 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:54:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:54:57 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:54:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:54:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:54:58 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:54:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:54:58 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:54:58 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:54:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:54:58 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:54:58 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:54:58 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:54:58 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:58 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:54:58 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:56.482066 End time: 2026-08-17 20:54:57.950958 2026-08-17 20:54:58 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:54:58 INFO tclean::::casa ########################################## 2026-08-17 20:54:58 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:54:58 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:58 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:54:58 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:54:58 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:54:58 2026****** 2026-08-17 20:54:58 INFO ImageFitter::fit+ 2026-08-17 20:54:58 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:54:58 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:54:58 INFO ImageFitter::fit+ --- region: 2026-08-17 20:54:58 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:54:58 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:54:58 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:54:58 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:54:58 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:54:58 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:54:58 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:58 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.996 to 19:53:46.513, +40.06.39.996) 2026-08-17 20:54:58 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116891 Jy 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126504 Jy 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999957 +/- 0.000777 arcsec 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- dec: 128.000047 +/- 0.000097 pixels 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:54:58 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:54:58 INFO imstat::::casa ########################################## 2026-08-17 20:54:58 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:54:58 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:54:58 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:54:58 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:54:58 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:54:58 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:54:58 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:54:58 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:54:58 INFO imstat:::: Values --- 2026-08-17 20:54:58 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:54:58 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:54:58 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- minimum value [min]: -7.78094e-05 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:54:58 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:54:58 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:54:58 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.659, I, 999981612.9Hz 2026-08-17 20:54:58 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:54:58 INFO imstat:::: Statistics --- 2026-08-17 20:54:58 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- Median of the pixel values [median]: -1.86846e-05 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73901e-05 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- IQR [quartile]: 3.56505e-05 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- First quartile [q1]: -3.45202e-05 Jy/beam 2026-08-17 20:54:58 INFO imstat:::: -- Third quartile [q3]: 1.13024e-06 Jy/beam 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:54:58 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.780943e-05 4.999996e+00 2026-08-17 20:54:58 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:54:58.009438 End time: 2026-08-17 20:54:58.033113 2026-08-17 20:54:58 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:54:58 INFO imstat::::casa ########################################## 2026-08-17 20:54:58 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:58 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:54:58 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19h53m49.9980 40.100000528deg' ) 2026-08-17 20:54:58 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:54:58 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:54:58 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:54:58 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:54:58 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:54:58 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:54:58 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:54:58 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:54:58 INFO MSTransformManager::open Select data 2026-08-17 20:54:58 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:54:58 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:54:58 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m49.9980 40.100000528deg' successfully parsed 2026-08-17 20:54:58 INFO phaseshift::::casa Shift phase center 2026-08-17 20:54:58 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:54:58 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:54:58.047022 End time: 2026-08-17 20:54:58.479438 2026-08-17 20:54:58 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:54:58 INFO phaseshift::::casa ########################################## 2026-08-17 20:54:59 INFO tclean::::casa ########################################## 2026-08-17 20:54:59 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:54:59 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:54:59 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:54:59 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:54:59 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:54:59 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:59 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:54:59 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:54:59 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:54:59 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:54:59 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:54:59 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:54:59 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:54:59 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:54:59 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:54:59 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.022272 2026-08-17 20:54:59 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:54:59 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:54:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:54:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:54:59 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:54:59 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:54:59 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:54:59 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:54:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:54:59 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:54:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:54:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:54:59 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:54:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:00 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:00 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:00 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:00 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:00 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:00 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:54:58.520574 End time: 2026-08-17 20:55:00.276278 2026-08-17 20:55:00 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:00 INFO tclean::::casa ########################################## 2026-08-17 20:55:00 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:00 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:00 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:00 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:00 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:00 2026****** 2026-08-17 20:55:00 INFO ImageFitter::fit+ 2026-08-17 20:55:00 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:00 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:00 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:00 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:00 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:00 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:00 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:00 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:00 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:00 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:00 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:00 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116876 Jy 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:00 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:00 INFO imstat::::casa ########################################## 2026-08-17 20:55:00 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:00 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:00 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:00 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:00 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:00 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:00 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:00 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:00 INFO imstat:::: Values --- 2026-08-17 20:55:00 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:00 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:00 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:00 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:00 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:00 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:00 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:00 INFO imstat:::: Statistics --- 2026-08-17 20:55:00 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73637e-05 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- IQR [quartile]: 3.56311e-05 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- First quartile [q1]: -3.45119e-05 Jy/beam 2026-08-17 20:55:00 INFO imstat:::: -- Third quartile [q3]: 1.11928e-06 Jy/beam 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:00 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.779537e-05 4.999996e+00 2026-08-17 20:55:00 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:00.350744 End time: 2026-08-17 20:55:00.378060 2026-08-17 20:55:00 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:00 INFO imstat::::casa ########################################## 2026-08-17 20:55:00 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:00 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:00 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19h53m49.9980 0.699877039rad' ) 2026-08-17 20:55:00 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:00 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:00 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:00 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:00 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:00 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:00 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:00 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:00 INFO MSTransformManager::open Select data 2026-08-17 20:55:00 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:01 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:01 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m49.9980 0.699877039rad' successfully parsed 2026-08-17 20:55:01 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:01 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:01 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:00.394482 End time: 2026-08-17 20:55:00.843336 2026-08-17 20:55:01 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:01 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:01 INFO tclean::::casa ########################################## 2026-08-17 20:55:01 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:01 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:01 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:01 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:01 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:01 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:01 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:01 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:01 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:01 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:01 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:01 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:01 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:01 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:01 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:01 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013095 2026-08-17 20:55:01 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:01 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:01 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:01 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:01 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:01 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:01 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:02 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:02 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:02 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:02 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:02 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:02 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:00.885038 End time: 2026-08-17 20:55:02.436090 2026-08-17 20:55:02 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:02 INFO tclean::::casa ########################################## 2026-08-17 20:55:02 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:02 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:02 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:02 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:02 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:02 2026****** 2026-08-17 20:55:02 INFO ImageFitter::fit+ 2026-08-17 20:55:02 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:02 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:02 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:02 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:02 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:02 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:02 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:02 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:02 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:02 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:02 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:02 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999992 +/- 0.000777 arcsec 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- dec: 128.000009 +/- 0.000097 pixels 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:02 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:02 INFO imstat::::casa ########################################## 2026-08-17 20:55:02 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:02 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:02 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:02 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:02 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:02 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:02 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:02 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:02 INFO imstat:::: Values --- 2026-08-17 20:55:02 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:02 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:02 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- minimum value [min]: -7.77867e-05 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:02 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:02 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:02 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:02 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:02 INFO imstat:::: Statistics --- 2026-08-17 20:55:02 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- Median of the pixel values [median]: -1.86761e-05 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73623e-05 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- IQR [quartile]: 3.56319e-05 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- First quartile [q1]: -3.45153e-05 Jy/beam 2026-08-17 20:55:02 INFO imstat:::: -- Third quartile [q3]: 1.11659e-06 Jy/beam 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:02 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.778665e-05 4.999996e+00 2026-08-17 20:55:03 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:02.479561 End time: 2026-08-17 20:55:02.499684 2026-08-17 20:55:03 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:03 INFO imstat::::casa ########################################## 2026-08-17 20:55:03 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:03 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:03 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19:53:49.9980 40d06m0.0019' ) 2026-08-17 20:55:03 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:03 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:03 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:03 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:03 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:03 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:03 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:03 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:03 INFO MSTransformManager::open Select data 2026-08-17 20:55:03 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:03 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:03 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19:53:49.9980 40d06m0.0019' successfully parsed 2026-08-17 20:55:03 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:03 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:03 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:02.513356 End time: 2026-08-17 20:55:02.929025 2026-08-17 20:55:03 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:03 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:03 INFO tclean::::casa ########################################## 2026-08-17 20:55:03 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:03 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:03 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:03 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:03 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:03 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:03 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:03 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:03 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:03 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:03 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:03 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:03 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:03 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:03 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:03 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.017511 2026-08-17 20:55:03 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:03 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:03 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:04 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:04 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:04 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:04 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:04 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:04 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:04 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:04 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:04 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:02.954080 End time: 2026-08-17 20:55:04.372998 2026-08-17 20:55:04 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:04 INFO tclean::::casa ########################################## 2026-08-17 20:55:04 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:04 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:04 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:04 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:04 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:04 2026****** 2026-08-17 20:55:04 INFO ImageFitter::fit+ 2026-08-17 20:55:04 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:04 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:04 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:04 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:04 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:04 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:04 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:04 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:04 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:04 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:04 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:04 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:04 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:04 INFO imstat::::casa ########################################## 2026-08-17 20:55:04 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:04 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:04 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:04 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:04 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:04 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:04 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:04 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:04 INFO imstat:::: Values --- 2026-08-17 20:55:04 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:04 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:04 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:04 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:04 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:04 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:04 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:04 INFO imstat:::: Statistics --- 2026-08-17 20:55:04 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- Median of the pixel values [median]: -1.86712e-05 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73636e-05 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- IQR [quartile]: 3.56293e-05 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- First quartile [q1]: -3.45095e-05 Jy/beam 2026-08-17 20:55:04 INFO imstat:::: -- Third quartile [q3]: 1.1198e-06 Jy/beam 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:04 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.779541e-05 4.999996e+00 2026-08-17 20:55:04 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:04.416885 End time: 2026-08-17 20:55:04.436566 2026-08-17 20:55:04 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:04 INFO imstat::::casa ########################################## 2026-08-17 20:55:04 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:04 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:04 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19:53:49.9980 02:40:24.0001' ) 2026-08-17 20:55:04 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:04 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:04 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:04 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:04 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:04 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:04 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:04 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:04 INFO MSTransformManager::open Select data 2026-08-17 20:55:04 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:05 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0001" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:55:05 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19:53:49.9980 02:40:24.0001' successfully parsed 2026-08-17 20:55:05 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:05 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:05 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:04.449028 End time: 2026-08-17 20:55:04.860862 2026-08-17 20:55:05 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:05 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:05 INFO tclean::::casa ########################################## 2026-08-17 20:55:05 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:05 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:05 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:05 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:05 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:05 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:05 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:05 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:05 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:05 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:05 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:05 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:05 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:05 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:05 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:05 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.017602 2026-08-17 20:55:05 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:05 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:05 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:05 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:05 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:05 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:05 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:05 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:06 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:06 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:06 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:06 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:06 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:06 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:04.888625 End time: 2026-08-17 20:55:06.451261 2026-08-17 20:55:06 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:06 INFO tclean::::casa ########################################## 2026-08-17 20:55:06 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:06 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:06 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:06 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:06 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:06 2026****** 2026-08-17 20:55:06 INFO ImageFitter::fit+ 2026-08-17 20:55:06 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:06 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:06 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:06 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:06 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:06 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:06 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:06 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:06 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:06 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:06 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.996 to 19:53:46.513, +40.06.39.996) 2026-08-17 20:55:06 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116891 Jy 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126504 Jy 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999957 +/- 0.000777 arcsec 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- dec: 128.000047 +/- 0.000097 pixels 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:06 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:07 INFO imstat::::casa ########################################## 2026-08-17 20:55:07 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:07 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:07 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:07 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:07 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:07 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:07 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:07 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:07 INFO imstat:::: Values --- 2026-08-17 20:55:07 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:07 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:07 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- minimum value [min]: -7.78094e-05 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:07 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:55:07 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:07 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.659, I, 999981612.9Hz 2026-08-17 20:55:07 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:07 INFO imstat:::: Statistics --- 2026-08-17 20:55:07 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- Median of the pixel values [median]: -1.86846e-05 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73901e-05 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- IQR [quartile]: 3.56505e-05 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- First quartile [q1]: -3.45202e-05 Jy/beam 2026-08-17 20:55:07 INFO imstat:::: -- Third quartile [q3]: 1.13024e-06 Jy/beam 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:07 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.780943e-05 4.999996e+00 2026-08-17 20:55:07 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:06.502051 End time: 2026-08-17 20:55:06.522717 2026-08-17 20:55:07 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:07 INFO imstat::::casa ########################################## 2026-08-17 20:55:07 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:07 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:07 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19:53:49.9980 40.100000528deg' ) 2026-08-17 20:55:07 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:07 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:07 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:07 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:07 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:07 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:07 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:07 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:07 INFO MSTransformManager::open Select data 2026-08-17 20:55:07 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:07 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:07 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19:53:49.9980 40.100000528deg' successfully parsed 2026-08-17 20:55:07 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:07 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:07 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:06.535838 End time: 2026-08-17 20:55:06.971139 2026-08-17 20:55:07 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:07 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:07 INFO tclean::::casa ########################################## 2026-08-17 20:55:07 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:07 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:07 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:07 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:07 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:07 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:07 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:07 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:07 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:07 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:07 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:07 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:07 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:07 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:07 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:07 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011082 2026-08-17 20:55:07 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:07 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:07 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:07 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:07 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:08 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:08 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:08 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:08 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:08 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:08 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:08 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:06.997388 End time: 2026-08-17 20:55:08.358104 2026-08-17 20:55:08 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:08 INFO tclean::::casa ########################################## 2026-08-17 20:55:08 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:08 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:08 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:08 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:08 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:08 2026****** 2026-08-17 20:55:08 INFO ImageFitter::fit+ 2026-08-17 20:55:08 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:08 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:08 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:08 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:08 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:08 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:08 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:08 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:08 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:08 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:08 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:08 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116876 Jy 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:08 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:08 INFO imstat::::casa ########################################## 2026-08-17 20:55:08 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:08 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:08 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:08 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:08 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:08 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:08 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:08 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:08 INFO imstat:::: Values --- 2026-08-17 20:55:08 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:08 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:08 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:08 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:08 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:08 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:08 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:08 INFO imstat:::: Statistics --- 2026-08-17 20:55:08 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73637e-05 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- IQR [quartile]: 3.56311e-05 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- First quartile [q1]: -3.45119e-05 Jy/beam 2026-08-17 20:55:08 INFO imstat:::: -- Third quartile [q3]: 1.11928e-06 Jy/beam 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:08 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.779537e-05 4.999996e+00 2026-08-17 20:55:08 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:08.416393 End time: 2026-08-17 20:55:08.440056 2026-08-17 20:55:08 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:08 INFO imstat::::casa ########################################## 2026-08-17 20:55:08 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:08 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:08 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19:53:49.9980 0.699877039rad' ) 2026-08-17 20:55:08 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:08 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:08 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:08 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:08 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:08 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:08 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:08 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:08 INFO MSTransformManager::open Select data 2026-08-17 20:55:08 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:09 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:09 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19:53:49.9980 0.699877039rad' successfully parsed 2026-08-17 20:55:09 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:09 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:09 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:08.454300 End time: 2026-08-17 20:55:08.856497 2026-08-17 20:55:09 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:09 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:09 INFO tclean::::casa ########################################## 2026-08-17 20:55:09 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:09 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:09 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:09 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:09 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:09 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:09 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:09 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:09 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:09 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:09 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:09 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:09 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:09 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:09 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:09 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013363 2026-08-17 20:55:09 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:09 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:09 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:09 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:09 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:09 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:10 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:10 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:10 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:10 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:10 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:10 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:10 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:10 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:10 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:08.880484 End time: 2026-08-17 20:55:10.452144 2026-08-17 20:55:10 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:10 INFO tclean::::casa ########################################## 2026-08-17 20:55:10 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:10 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:10 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:10 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:10 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:10 2026****** 2026-08-17 20:55:10 INFO ImageFitter::fit+ 2026-08-17 20:55:10 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:10 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:10 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:10 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:10 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:10 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:10 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:10 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:10 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:10 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:10 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:10 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999992 +/- 0.000777 arcsec 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- dec: 128.000009 +/- 0.000097 pixels 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:10 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:10 INFO imstat::::casa ########################################## 2026-08-17 20:55:10 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:10 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:11 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:11 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:11 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:11 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:11 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:11 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:11 INFO imstat:::: Values --- 2026-08-17 20:55:11 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:11 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:11 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- minimum value [min]: -7.77867e-05 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:11 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:11 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:11 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:11 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:11 INFO imstat:::: Statistics --- 2026-08-17 20:55:11 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- Median of the pixel values [median]: -1.86761e-05 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73623e-05 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- IQR [quartile]: 3.56319e-05 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- First quartile [q1]: -3.45153e-05 Jy/beam 2026-08-17 20:55:11 INFO imstat:::: -- Third quartile [q3]: 1.11659e-06 Jy/beam 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:11 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.778665e-05 4.999996e+00 2026-08-17 20:55:11 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:10.494522 End time: 2026-08-17 20:55:10.515199 2026-08-17 20:55:11 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:11 INFO imstat::::casa ########################################## 2026-08-17 20:55:11 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:11 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:11 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 298.458325000deg 40d06m0.0019' ) 2026-08-17 20:55:11 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:11 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:11 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:11 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:11 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:11 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:11 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:11 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:11 INFO MSTransformManager::open Select data 2026-08-17 20:55:11 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:11 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:11 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 298.458325000deg 40d06m0.0019' successfully parsed 2026-08-17 20:55:11 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:11 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:11 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:10.532924 End time: 2026-08-17 20:55:10.898773 2026-08-17 20:55:11 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:11 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:11 INFO tclean::::casa ########################################## 2026-08-17 20:55:11 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:11 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:11 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:11 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:11 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:11 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:11 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:11 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:11 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:11 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:11 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:11 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:11 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:11 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:11 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:11 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010856 2026-08-17 20:55:11 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:11 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:11 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:11 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:11 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:11 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:12 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:12 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:12 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:12 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:12 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:12 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:12 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:12 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:12 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:10.923349 End time: 2026-08-17 20:55:12.441154 2026-08-17 20:55:12 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:12 INFO tclean::::casa ########################################## 2026-08-17 20:55:12 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:12 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:12 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:12 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:12 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:12 2026****** 2026-08-17 20:55:12 INFO ImageFitter::fit+ 2026-08-17 20:55:12 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:12 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:12 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:12 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:12 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:12 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:12 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:12 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:12 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:12 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:12 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:12 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:12 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:13 INFO imstat::::casa ########################################## 2026-08-17 20:55:13 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:13 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:13 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:13 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:13 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:13 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:13 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:13 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:13 INFO imstat:::: Values --- 2026-08-17 20:55:13 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:13 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:13 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:13 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:13 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:13 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:13 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:13 INFO imstat:::: Statistics --- 2026-08-17 20:55:13 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- Median of the pixel values [median]: -1.86712e-05 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73636e-05 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- IQR [quartile]: 3.56293e-05 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- First quartile [q1]: -3.45095e-05 Jy/beam 2026-08-17 20:55:13 INFO imstat:::: -- Third quartile [q3]: 1.1198e-06 Jy/beam 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:13 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.779541e-05 4.999996e+00 2026-08-17 20:55:13 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:12.506759 End time: 2026-08-17 20:55:12.532367 2026-08-17 20:55:13 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:13 INFO imstat::::casa ########################################## 2026-08-17 20:55:13 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:13 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:13 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 298.458325000deg 02:40:24.0001' ) 2026-08-17 20:55:13 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:13 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:13 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:13 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:13 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:13 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:13 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:13 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:13 INFO MSTransformManager::open Select data 2026-08-17 20:55:13 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:13 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0001" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:55:13 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 298.458325000deg 02:40:24.0001' successfully parsed 2026-08-17 20:55:13 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:13 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:13 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:12.547768 End time: 2026-08-17 20:55:12.978527 2026-08-17 20:55:13 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:13 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:13 INFO tclean::::casa ########################################## 2026-08-17 20:55:13 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:13 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:13 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:13 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:13 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:13 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:13 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:13 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:13 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:13 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:13 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:13 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:13 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:13 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:13 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:13 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011333 2026-08-17 20:55:13 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:13 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:14 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:14 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:14 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:14 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:14 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:14 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:14 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:14 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:14 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:13.012026 End time: 2026-08-17 20:55:14.391247 2026-08-17 20:55:14 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:14 INFO tclean::::casa ########################################## 2026-08-17 20:55:14 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:14 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:14 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:14 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:14 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:14 2026****** 2026-08-17 20:55:14 INFO ImageFitter::fit+ 2026-08-17 20:55:14 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:14 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:14 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:14 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:14 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:14 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:14 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:14 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:14 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:14 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:14 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.996 to 19:53:46.513, +40.06.39.996) 2026-08-17 20:55:14 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116891 Jy 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126504 Jy 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999957 +/- 0.000777 arcsec 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- dec: 128.000047 +/- 0.000097 pixels 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:14 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:14 INFO imstat::::casa ########################################## 2026-08-17 20:55:14 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:14 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:14 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:14 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:14 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:14 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:14 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:14 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:14 INFO imstat:::: Values --- 2026-08-17 20:55:14 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:14 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:14 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- minimum value [min]: -7.78094e-05 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:14 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:55:14 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:14 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.659, I, 999981612.9Hz 2026-08-17 20:55:14 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:14 INFO imstat:::: Statistics --- 2026-08-17 20:55:14 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- Median of the pixel values [median]: -1.86846e-05 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73901e-05 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- IQR [quartile]: 3.56505e-05 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- First quartile [q1]: -3.45202e-05 Jy/beam 2026-08-17 20:55:14 INFO imstat:::: -- Third quartile [q3]: 1.13024e-06 Jy/beam 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:14 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.780943e-05 4.999996e+00 2026-08-17 20:55:14 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:14.461916 End time: 2026-08-17 20:55:14.488452 2026-08-17 20:55:14 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:14 INFO imstat::::casa ########################################## 2026-08-17 20:55:15 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:15 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:15 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 298.458325000deg 40.100000528deg' ) 2026-08-17 20:55:15 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:15 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:15 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:15 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:15 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:15 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:15 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:15 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:15 INFO MSTransformManager::open Select data 2026-08-17 20:55:15 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:15 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:15 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 298.458325000deg 40.100000528deg' successfully parsed 2026-08-17 20:55:15 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:15 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:15 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:14.504242 End time: 2026-08-17 20:55:14.918282 2026-08-17 20:55:15 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:15 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:15 INFO tclean::::casa ########################################## 2026-08-17 20:55:15 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:15 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:15 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:15 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:15 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:15 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:15 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:15 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:15 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:15 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:15 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:15 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:15 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:15 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:15 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:15 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011538 2026-08-17 20:55:15 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:15 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:15 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:15 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:15 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:16 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:16 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:16 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:16 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:16 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:16 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:14.943390 End time: 2026-08-17 20:55:16.235862 2026-08-17 20:55:16 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:16 INFO tclean::::casa ########################################## 2026-08-17 20:55:16 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:16 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:16 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:16 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:16 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:16 2026****** 2026-08-17 20:55:16 INFO ImageFitter::fit+ 2026-08-17 20:55:16 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:16 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:16 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:16 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:16 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:16 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:16 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:16 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:16 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:16 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:16 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:16 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116876 Jy 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:16 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:16 INFO imstat::::casa ########################################## 2026-08-17 20:55:16 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:16 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:16 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:16 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:16 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:16 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:16 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:16 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:16 INFO imstat:::: Values --- 2026-08-17 20:55:16 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:16 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:16 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:16 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:16 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:16 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:16 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:16 INFO imstat:::: Statistics --- 2026-08-17 20:55:16 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73637e-05 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- IQR [quartile]: 3.56311e-05 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- First quartile [q1]: -3.45119e-05 Jy/beam 2026-08-17 20:55:16 INFO imstat:::: -- Third quartile [q3]: 1.11928e-06 Jy/beam 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:16 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.779537e-05 4.999996e+00 2026-08-17 20:55:16 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:16.283536 End time: 2026-08-17 20:55:16.305612 2026-08-17 20:55:16 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:16 INFO imstat::::casa ########################################## 2026-08-17 20:55:16 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:16 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:16 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 298.458325000deg 0.699877039rad' ) 2026-08-17 20:55:16 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:16 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:16 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:16 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:16 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:16 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:16 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:16 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:16 INFO MSTransformManager::open Select data 2026-08-17 20:55:16 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:16 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:16 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 298.458325000deg 0.699877039rad' successfully parsed 2026-08-17 20:55:16 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:17 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:17 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:16.319604 End time: 2026-08-17 20:55:16.693430 2026-08-17 20:55:17 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:17 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:17 INFO tclean::::casa ########################################## 2026-08-17 20:55:17 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:17 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:17 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:17 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:17 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:17 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:17 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:17 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:17 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:17 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:17 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:17 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:17 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:17 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:17 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:17 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010693 2026-08-17 20:55:17 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:17 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:17 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:17 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:17 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:18 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:18 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:18 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:18 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:18 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:18 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:16.722918 End time: 2026-08-17 20:55:18.175536 2026-08-17 20:55:18 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:18 INFO tclean::::casa ########################################## 2026-08-17 20:55:18 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:18 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:18 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:18 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:18 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:18 2026****** 2026-08-17 20:55:18 INFO ImageFitter::fit+ 2026-08-17 20:55:18 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:18 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:18 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:18 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:18 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:18 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:18 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:18 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:18 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:18 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:18 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:18 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999992 +/- 0.000777 arcsec 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- dec: 128.000009 +/- 0.000097 pixels 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:18 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:18 INFO imstat::::casa ########################################## 2026-08-17 20:55:18 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:18 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:18 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:18 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:18 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:18 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:18 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:18 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:18 INFO imstat:::: Values --- 2026-08-17 20:55:18 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:18 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:18 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- minimum value [min]: -7.77867e-05 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:18 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:18 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:18 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:18 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:18 INFO imstat:::: Statistics --- 2026-08-17 20:55:18 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- Median of the pixel values [median]: -1.86761e-05 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73623e-05 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- IQR [quartile]: 3.56319e-05 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- First quartile [q1]: -3.45153e-05 Jy/beam 2026-08-17 20:55:18 INFO imstat:::: -- Third quartile [q3]: 1.11659e-06 Jy/beam 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:18 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.778665e-05 4.999996e+00 2026-08-17 20:55:18 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:18.219203 End time: 2026-08-17 20:55:18.238929 2026-08-17 20:55:18 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:18 INFO imstat::::casa ########################################## 2026-08-17 20:55:18 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:18 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:18 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 5.209080451rad 40d06m0.0019' ) 2026-08-17 20:55:18 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:18 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:18 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:18 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:18 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:18 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:18 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:18 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:18 INFO MSTransformManager::open Select data 2026-08-17 20:55:18 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:18 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:18 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 5.209080451rad 40d06m0.0019' successfully parsed 2026-08-17 20:55:18 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:19 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:19 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:18.251694 End time: 2026-08-17 20:55:18.605950 2026-08-17 20:55:19 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:19 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:19 INFO tclean::::casa ########################################## 2026-08-17 20:55:19 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:19 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:19 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:19 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:19 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:19 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:19 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:19 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:19 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:19 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:19 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:19 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:19 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:19 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:19 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:19 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010881 2026-08-17 20:55:19 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:19 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:19 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:19 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:19 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:20 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:20 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:20 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:20 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:20 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:20 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:18.631244 End time: 2026-08-17 20:55:20.050411 2026-08-17 20:55:20 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:20 INFO tclean::::casa ########################################## 2026-08-17 20:55:20 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:20 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:20 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:20 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:20 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:20 2026****** 2026-08-17 20:55:20 INFO ImageFitter::fit+ 2026-08-17 20:55:20 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:20 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:20 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:20 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:20 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:20 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:20 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:20 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:20 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:20 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:20 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:20 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116878 Jy 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126494 Jy 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- ra: 127.999966 +/- 0.000127 pixels 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:20 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:20 INFO imstat::::casa ########################################## 2026-08-17 20:55:20 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:20 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:20 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:20 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:20 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:20 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:20 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:20 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:20 INFO imstat:::: Values --- 2026-08-17 20:55:20 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:20 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:20 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- minimum value [min]: -7.77984e-05 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:20 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:20 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:20 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:20 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:20 INFO imstat:::: Statistics --- 2026-08-17 20:55:20 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- Median of the pixel values [median]: -1.86704e-05 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7365e-05 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- IQR [quartile]: 3.56348e-05 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- First quartile [q1]: -3.45131e-05 Jy/beam 2026-08-17 20:55:20 INFO imstat:::: -- Third quartile [q3]: 1.12172e-06 Jy/beam 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:20 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.779843e-05 4.999996e+00 2026-08-17 20:55:20 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:20.093309 End time: 2026-08-17 20:55:20.113274 2026-08-17 20:55:20 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:20 INFO imstat::::casa ########################################## 2026-08-17 20:55:20 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:20 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:20 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 5.209080451rad 02:40:24.0001' ) 2026-08-17 20:55:20 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:20 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:20 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:20 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:20 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:20 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:20 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:20 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:20 INFO MSTransformManager::open Select data 2026-08-17 20:55:20 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:20 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0001" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:55:20 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 5.209080451rad 02:40:24.0001' successfully parsed 2026-08-17 20:55:20 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:21 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:21 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:20.126260 End time: 2026-08-17 20:55:20.569047 2026-08-17 20:55:21 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:21 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:21 INFO tclean::::casa ########################################## 2026-08-17 20:55:21 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:21 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:21 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:21 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:21 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:21 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:21 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:21 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:21 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:21 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:21 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:21 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:21 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:21 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:21 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:21 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011381 2026-08-17 20:55:21 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:21 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:21 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:21 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:21 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:21 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:21 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:21 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:21 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:22 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:22 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:22 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:22 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:22 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:22 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:20.593258 End time: 2026-08-17 20:55:22.172191 2026-08-17 20:55:22 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:22 INFO tclean::::casa ########################################## 2026-08-17 20:55:22 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:22 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:22 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:22 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:22 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:22 2026****** 2026-08-17 20:55:22 INFO ImageFitter::fit+ 2026-08-17 20:55:22 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:22 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:22 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:22 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:22 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:22 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:22 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:22 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:22 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:22 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:22 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.996 to 19:53:46.513, +40.06.39.996) 2026-08-17 20:55:22 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116894 Jy 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126508 Jy 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999996 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999957 +/- 0.000777 arcsec 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- ra: 127.999966 +/- 0.000127 pixels 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- dec: 128.000047 +/- 0.000097 pixels 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:22 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:22 INFO imstat::::casa ########################################## 2026-08-17 20:55:22 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:22 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:22 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:22 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:22 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:22 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:22 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:22 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:22 INFO imstat:::: Values --- 2026-08-17 20:55:22 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:22 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:22 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- minimum value [min]: -7.78076e-05 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:22 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:55:22 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:22 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.659, I, 999981612.9Hz 2026-08-17 20:55:22 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:22 INFO imstat:::: Statistics --- 2026-08-17 20:55:22 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- Median of the pixel values [median]: -1.86848e-05 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73951e-05 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- IQR [quartile]: 3.56676e-05 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- First quartile [q1]: -3.45186e-05 Jy/beam 2026-08-17 20:55:22 INFO imstat:::: -- Third quartile [q3]: 1.14894e-06 Jy/beam 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:22 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.780757e-05 4.999996e+00 2026-08-17 20:55:22 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:22.238738 End time: 2026-08-17 20:55:22.263719 2026-08-17 20:55:22 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:22 INFO imstat::::casa ########################################## 2026-08-17 20:55:22 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:22 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:22 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 5.209080451rad 40.100000528deg' ) 2026-08-17 20:55:22 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:22 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:22 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:22 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:22 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:22 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:22 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:22 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:22 INFO MSTransformManager::open Select data 2026-08-17 20:55:22 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:22 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:22 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 5.209080451rad 40.100000528deg' successfully parsed 2026-08-17 20:55:22 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:23 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:23 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:22.278703 End time: 2026-08-17 20:55:22.754560 2026-08-17 20:55:23 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:23 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:23 INFO tclean::::casa ########################################## 2026-08-17 20:55:23 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:23 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:23 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:23 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:23 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:23 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:23 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:23 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:23 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:23 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:23 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:23 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:23 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:23 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:23 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:23 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.014945 2026-08-17 20:55:23 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:23 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:23 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:23 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:23 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:23 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:24 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:24 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:24 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:24 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:24 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:24 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:22.795844 End time: 2026-08-17 20:55:24.230181 2026-08-17 20:55:24 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:24 INFO tclean::::casa ########################################## 2026-08-17 20:55:24 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:24 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:24 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:24 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:24 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:24 2026****** 2026-08-17 20:55:24 INFO ImageFitter::fit+ 2026-08-17 20:55:24 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:24 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:24 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:24 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:24 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:24 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:24 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:24 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:24 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:24 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:24 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:24 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116882 Jy 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126496 Jy 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999996 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- ra: 127.999966 +/- 0.000127 pixels 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:24 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:24 INFO imstat::::casa ########################################## 2026-08-17 20:55:24 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:24 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:24 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:24 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:24 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:24 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:24 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:24 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:24 INFO imstat:::: Values --- 2026-08-17 20:55:24 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:24 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:24 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- minimum value [min]: -7.77982e-05 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:24 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:24 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:24 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:24 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:24 INFO imstat:::: Statistics --- 2026-08-17 20:55:24 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- Median of the pixel values [median]: -1.86711e-05 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73646e-05 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- IQR [quartile]: 3.56367e-05 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- First quartile [q1]: -3.45138e-05 Jy/beam 2026-08-17 20:55:24 INFO imstat:::: -- Third quartile [q3]: 1.12291e-06 Jy/beam 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:24 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.779823e-05 4.999996e+00 2026-08-17 20:55:24 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:24.279457 End time: 2026-08-17 20:55:24.308908 2026-08-17 20:55:24 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:24 INFO imstat::::casa ########################################## 2026-08-17 20:55:24 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:24 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:24 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 5.209080451rad 0.699877039rad' ) 2026-08-17 20:55:24 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:24 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:24 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:24 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:24 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:24 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:24 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:24 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:24 INFO MSTransformManager::open Select data 2026-08-17 20:55:24 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:25 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:25 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 5.209080451rad 0.699877039rad' successfully parsed 2026-08-17 20:55:25 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:25 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:25 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:24.333882 End time: 2026-08-17 20:55:24.802942 2026-08-17 20:55:25 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:25 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:25 INFO tclean::::casa ########################################## 2026-08-17 20:55:25 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:25 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:25 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:25 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:25 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:25 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:25 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:25 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:25 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:25 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:25 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:25 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:25 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:25 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:25 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:25 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010557 2026-08-17 20:55:25 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:25 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:25 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:25 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:25 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374443277716637, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852561634033918, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:26 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:26 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:26 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:26 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:26 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:26 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:24.830688 End time: 2026-08-17 20:55:26.263343 2026-08-17 20:55:26 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:26 INFO tclean::::casa ########################################## 2026-08-17 20:55:26 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:26 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:26 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:26 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:26 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:26 2026****** 2026-08-17 20:55:26 INFO ImageFitter::fit+ 2026-08-17 20:55:26 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:26 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:26 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:26 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:26 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:26 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:26 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:26 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:26 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:26 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:26 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:26 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116879 Jy 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126495 Jy 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999996 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999992 +/- 0.000777 arcsec 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- ra: 127.999966 +/- 0.000127 pixels 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- dec: 128.000009 +/- 0.000097 pixels 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:26 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:26 INFO imstat::::casa ########################################## 2026-08-17 20:55:26 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:26 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:26 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:26 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:26 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:26 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:26 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:26 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:26 INFO imstat:::: Values --- 2026-08-17 20:55:26 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:26 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:26 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- minimum value [min]: -7.77898e-05 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:26 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:26 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:26 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-08-17 20:55:26 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:26 INFO imstat:::: Statistics --- 2026-08-17 20:55:26 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- Median of the pixel values [median]: -1.86769e-05 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73662e-05 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- IQR [quartile]: 3.5634e-05 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- First quartile [q1]: -3.45153e-05 Jy/beam 2026-08-17 20:55:26 INFO imstat:::: -- Third quartile [q3]: 1.1187e-06 Jy/beam 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:26 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.778978e-05 4.999996e+00 2026-08-17 20:55:26 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:26.324049 End time: 2026-08-17 20:55:26.347844 2026-08-17 20:55:26 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:26 INFO imstat::::casa ########################################## 2026-08-17 20:55:26 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:26 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:26 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 05h00m21.5326 +006d21m09.7433' ) 2026-08-17 20:55:26 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:26 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:26 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:26 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:26 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:26 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:26 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:26 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:26 INFO MSTransformManager::open Select data 2026-08-17 20:55:26 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:27 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:27 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05h00m21.5326 +006d21m09.7433' successfully parsed 2026-08-17 20:55:27 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:27 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:27 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:26.362849 End time: 2026-08-17 20:55:26.768245 2026-08-17 20:55:27 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:27 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:27 INFO tclean::::casa ########################################## 2026-08-17 20:55:27 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:27 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:27 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:27 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:27 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:27 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:27 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:27 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:27 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:27 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:27 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:27 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:27 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:27 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:27 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:27 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011046 2026-08-17 20:55:27 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:27 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:27 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:27 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:27 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:28 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:28 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:28 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:28 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:28 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:28 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:28 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:28 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:28 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:28 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:28 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:28 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:28 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:28 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:28 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:28 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:28 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:26.793381 End time: 2026-08-17 20:55:28.116878 2026-08-17 20:55:28 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:28 INFO tclean::::casa ########################################## 2026-08-17 20:55:28 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:28 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:28 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:28 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:28 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:28 2026****** 2026-08-17 20:55:28 INFO ImageFitter::fit+ 2026-08-17 20:55:28 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:28 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:28 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:28 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:28 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:28 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:28 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:28 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:28 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:28 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:28 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:28 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116868 Jy 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126484 Jy 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:28 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:28 INFO imstat::::casa ########################################## 2026-08-17 20:55:28 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:28 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:28 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:28 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:28 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:28 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:28 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:28 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:28 INFO imstat:::: Values --- 2026-08-17 20:55:28 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:28 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:28 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- minimum value [min]: -7.77795e-05 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:28 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:28 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:28 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:28 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:28 INFO imstat:::: Statistics --- 2026-08-17 20:55:28 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- Median of the pixel values [median]: -1.86702e-05 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73612e-05 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- IQR [quartile]: 3.56029e-05 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- First quartile [q1]: -3.45082e-05 Jy/beam 2026-08-17 20:55:28 INFO imstat:::: -- Third quartile [q3]: 1.09472e-06 Jy/beam 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:28 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777946e-05 4.999996e+00 2026-08-17 20:55:28 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:28.179311 End time: 2026-08-17 20:55:28.204166 2026-08-17 20:55:28 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:28 INFO imstat::::casa ########################################## 2026-08-17 20:55:28 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:28 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:28 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 05h00m21.5326 00:25:24.6496' ) 2026-08-17 20:55:28 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:28 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:28 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:28 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:28 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:28 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:28 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:28 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:28 INFO MSTransformManager::open Select data 2026-08-17 20:55:28 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:28 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "00:25:24.6496" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:55:28 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05h00m21.5326 00:25:24.6496' successfully parsed 2026-08-17 20:55:28 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:29 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:29 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:28.219061 End time: 2026-08-17 20:55:28.673970 2026-08-17 20:55:29 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:29 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:29 INFO tclean::::casa ########################################## 2026-08-17 20:55:29 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:29 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:29 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:29 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:29 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:29 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:29 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:29 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:29 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:29 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:29 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:29 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:29 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:29 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:29 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:29 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.019291 2026-08-17 20:55:29 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:29 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:29 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:30 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:30 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:30 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:30 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:30 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:30 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:30 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:30 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:30 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:30 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:30 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:30 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:30 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:30 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:30 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:28.698609 End time: 2026-08-17 20:55:30.041401 2026-08-17 20:55:30 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:30 INFO tclean::::casa ########################################## 2026-08-17 20:55:30 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:30 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:30 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:30 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:30 2026****** 2026-08-17 20:55:30 INFO ImageFitter::fit+ 2026-08-17 20:55:30 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:30 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:30 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:30 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:30 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:30 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:30 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:30 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:30 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:30 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:30 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116907 Jy 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012652 Jy 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999994 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000038 +/- 0.000777 arcsec 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- ra: 127.999939 +/- 0.000127 pixels 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- dec: 127.999957 +/- 0.000097 pixels 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:30 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:30 INFO imstat::::casa ########################################## 2026-08-17 20:55:30 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:30 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:30 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:30 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:30 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:30 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:30 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:30 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.865, I, 999981612.9Hz to 19:52:21.081, +40.22.53.889, I, 999981612.9Hz) 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-08-17 20:55:30 INFO imstat:::: Values --- 2026-08-17 20:55:30 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:30 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:30 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- minimum value [min]: -7.78732e-05 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:30 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:30 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:30 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:30 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:30 INFO imstat:::: Statistics --- 2026-08-17 20:55:30 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- Median of the pixel values [median]: -1.86516e-05 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73802e-05 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- IQR [quartile]: 3.56959e-05 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- First quartile [q1]: -3.45348e-05 Jy/beam 2026-08-17 20:55:30 INFO imstat:::: -- Third quartile [q3]: 1.16101e-06 Jy/beam 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:30 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.787321e-05 4.999996e+00 2026-08-17 20:55:30 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:30.116215 End time: 2026-08-17 20:55:30.143916 2026-08-17 20:55:30 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:30 INFO imstat::::casa ########################################## 2026-08-17 20:55:30 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:30 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:30 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 05h00m21.5326 6.352706472deg' ) 2026-08-17 20:55:30 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:30 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:30 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:30 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:30 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:30 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:30 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:30 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:30 INFO MSTransformManager::open Select data 2026-08-17 20:55:30 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:30 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:30 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05h00m21.5326 6.352706472deg' successfully parsed 2026-08-17 20:55:30 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:31 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:31 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:30.160325 End time: 2026-08-17 20:55:30.580792 2026-08-17 20:55:31 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:31 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:31 INFO tclean::::casa ########################################## 2026-08-17 20:55:31 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:31 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:31 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:31 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:31 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:31 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:31 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:31 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:31 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:31 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:31 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:31 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:31 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:31 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:31 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:31 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.023161 2026-08-17 20:55:31 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:31 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:31 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:32 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:32 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:32 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:32 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:32 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:32 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:32 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:32 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:32 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:32 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:32 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:32 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:30.628380 End time: 2026-08-17 20:55:32.090156 2026-08-17 20:55:32 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:32 INFO tclean::::casa ########################################## 2026-08-17 20:55:32 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:32 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:32 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:32 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:32 2026****** 2026-08-17 20:55:32 INFO ImageFitter::fit+ 2026-08-17 20:55:32 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:32 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:32 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:32 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:32 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:32 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:32 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:32 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:32 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:32 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:32 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116872 Jy 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126486 Jy 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:32 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:32 INFO imstat::::casa ########################################## 2026-08-17 20:55:32 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:32 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:32 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:32 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:32 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:32 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:32 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:32 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:32 INFO imstat:::: Values --- 2026-08-17 20:55:32 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:32 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:32 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- minimum value [min]: -7.7777e-05 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:32 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:32 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:32 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:32 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:32 INFO imstat:::: Statistics --- 2026-08-17 20:55:32 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- Median of the pixel values [median]: -1.86705e-05 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7361e-05 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- IQR [quartile]: 3.56027e-05 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- First quartile [q1]: -3.45074e-05 Jy/beam 2026-08-17 20:55:32 INFO imstat:::: -- Third quartile [q3]: 1.09529e-06 Jy/beam 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:32 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777703e-05 4.999996e+00 2026-08-17 20:55:32 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:32.160654 End time: 2026-08-17 20:55:32.187424 2026-08-17 20:55:32 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:32 INFO imstat::::casa ########################################## 2026-08-17 20:55:32 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:32 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:32 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 05h00m21.5326 0.110875644rad' ) 2026-08-17 20:55:32 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:32 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:32 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:32 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:32 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:32 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:32 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:32 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:32 INFO MSTransformManager::open Select data 2026-08-17 20:55:32 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:32 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:32 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05h00m21.5326 0.110875644rad' successfully parsed 2026-08-17 20:55:32 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:33 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:33 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:32.203298 End time: 2026-08-17 20:55:32.690409 2026-08-17 20:55:33 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:33 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:33 INFO tclean::::casa ########################################## 2026-08-17 20:55:33 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:33 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:33 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:33 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:33 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:33 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:33 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:33 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:33 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:33 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:33 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:33 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:33 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:33 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:33 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:33 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01804 2026-08-17 20:55:33 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:33 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:33 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:33 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:33 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:34 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:34 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:34 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:34 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:34 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:34 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:34 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:34 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:34 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:34 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:34 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:34 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:34 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:34 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:34 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:34 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:34 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:32.715360 End time: 2026-08-17 20:55:34.230693 2026-08-17 20:55:34 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:34 INFO tclean::::casa ########################################## 2026-08-17 20:55:34 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:34 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:34 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:34 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:34 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:34 2026****** 2026-08-17 20:55:34 INFO ImageFitter::fit+ 2026-08-17 20:55:34 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:34 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:34 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:34 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:34 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:34 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:34 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:34 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:34 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:34 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:34 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:34 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- ra: 128.000012 +/- 0.000127 pixels 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:34 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:34 INFO imstat::::casa ########################################## 2026-08-17 20:55:34 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:34 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:34 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:34 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:34 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:34 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:34 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:34 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:34 INFO imstat:::: Values --- 2026-08-17 20:55:34 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:34 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:34 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- minimum value [min]: -7.77849e-05 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:34 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:55:34 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:34 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:55:34 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:34 INFO imstat:::: Statistics --- 2026-08-17 20:55:34 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73549e-05 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- IQR [quartile]: 3.56016e-05 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- First quartile [q1]: -3.45087e-05 Jy/beam 2026-08-17 20:55:34 INFO imstat:::: -- Third quartile [q3]: 1.0929e-06 Jy/beam 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:34 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778491e-05 4.999996e+00 2026-08-17 20:55:34 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:34.274251 End time: 2026-08-17 20:55:34.294722 2026-08-17 20:55:34 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:34 INFO imstat::::casa ########################################## 2026-08-17 20:55:34 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:34 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:34 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 05:00:21.5326 +006d21m09.7433' ) 2026-08-17 20:55:34 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:34 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:34 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:34 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:34 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:34 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:34 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:34 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:34 INFO MSTransformManager::open Select data 2026-08-17 20:55:34 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:34 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:34 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05:00:21.5326 +006d21m09.7433' successfully parsed 2026-08-17 20:55:34 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:35 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:35 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:34.307469 End time: 2026-08-17 20:55:34.741798 2026-08-17 20:55:35 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:35 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:35 INFO tclean::::casa ########################################## 2026-08-17 20:55:35 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:35 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:35 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:35 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:35 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:35 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:35 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:35 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:35 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:35 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:35 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:35 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:35 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:35 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:35 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:35 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011628 2026-08-17 20:55:35 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:35 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:35 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:35 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:35 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:36 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:36 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:36 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:36 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:36 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:36 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:36 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:36 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:36 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:36 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:36 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:36 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:36 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:36 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:36 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:36 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:36 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:36 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:36 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:34.777269 End time: 2026-08-17 20:55:36.262938 2026-08-17 20:55:36 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:36 INFO tclean::::casa ########################################## 2026-08-17 20:55:36 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:36 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:36 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:36 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:36 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:36 2026****** 2026-08-17 20:55:36 INFO ImageFitter::fit+ 2026-08-17 20:55:36 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:36 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:36 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:36 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:36 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:36 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:36 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:36 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:36 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:36 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:36 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:36 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116868 Jy 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126484 Jy 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:36 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:36 INFO imstat::::casa ########################################## 2026-08-17 20:55:36 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:36 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:36 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:36 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:36 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:36 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:36 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:36 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:36 INFO imstat:::: Values --- 2026-08-17 20:55:36 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:36 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:36 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- minimum value [min]: -7.77795e-05 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:36 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:36 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:36 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:36 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:36 INFO imstat:::: Statistics --- 2026-08-17 20:55:36 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- Median of the pixel values [median]: -1.86702e-05 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73612e-05 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- IQR [quartile]: 3.56029e-05 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- First quartile [q1]: -3.45082e-05 Jy/beam 2026-08-17 20:55:36 INFO imstat:::: -- Third quartile [q3]: 1.09472e-06 Jy/beam 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:36 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777946e-05 4.999996e+00 2026-08-17 20:55:36 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:36.322870 End time: 2026-08-17 20:55:36.349192 2026-08-17 20:55:36 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:36 INFO imstat::::casa ########################################## 2026-08-17 20:55:36 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:36 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:36 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 05:00:21.5326 00:25:24.6496' ) 2026-08-17 20:55:36 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:36 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:36 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:36 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:36 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:36 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:36 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:36 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:36 INFO MSTransformManager::open Select data 2026-08-17 20:55:36 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:37 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "00:25:24.6496" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:55:37 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05:00:21.5326 00:25:24.6496' successfully parsed 2026-08-17 20:55:37 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:37 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:37 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:36.364212 End time: 2026-08-17 20:55:36.798575 2026-08-17 20:55:37 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:37 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:37 INFO tclean::::casa ########################################## 2026-08-17 20:55:37 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:37 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:37 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:37 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:37 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:37 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:37 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:37 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:37 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:37 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:37 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:37 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:37 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:37 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:37 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:37 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010279 2026-08-17 20:55:37 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:37 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:37 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:37 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:37 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:38 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:38 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:38 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:38 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:38 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:38 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:38 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:38 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:38 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:38 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:38 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:38 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:38 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:38 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:38 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:36.823730 End time: 2026-08-17 20:55:38.337403 2026-08-17 20:55:38 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:38 INFO tclean::::casa ########################################## 2026-08-17 20:55:38 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:38 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:38 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:38 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:38 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:38 2026****** 2026-08-17 20:55:38 INFO ImageFitter::fit+ 2026-08-17 20:55:38 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:38 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:38 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:38 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:38 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:38 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:38 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:38 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:38 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:38 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:38 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:38 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116907 Jy 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012652 Jy 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999994 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000038 +/- 0.000777 arcsec 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- ra: 127.999939 +/- 0.000127 pixels 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- dec: 127.999957 +/- 0.000097 pixels 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:38 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:38 INFO imstat::::casa ########################################## 2026-08-17 20:55:38 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:38 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:38 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:38 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:38 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:38 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:38 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:38 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.865, I, 999981612.9Hz to 19:52:21.081, +40.22.53.889, I, 999981612.9Hz) 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-08-17 20:55:38 INFO imstat:::: Values --- 2026-08-17 20:55:38 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:38 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:38 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- minimum value [min]: -7.78732e-05 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:38 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:38 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:38 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:38 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:38 INFO imstat:::: Statistics --- 2026-08-17 20:55:38 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- Median of the pixel values [median]: -1.86516e-05 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73802e-05 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- IQR [quartile]: 3.56959e-05 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- First quartile [q1]: -3.45348e-05 Jy/beam 2026-08-17 20:55:38 INFO imstat:::: -- Third quartile [q3]: 1.16101e-06 Jy/beam 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:38 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.787321e-05 4.999996e+00 2026-08-17 20:55:38 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:38.397729 End time: 2026-08-17 20:55:38.421334 2026-08-17 20:55:38 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:38 INFO imstat::::casa ########################################## 2026-08-17 20:55:38 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:38 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:38 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 05:00:21.5326 6.352706472deg' ) 2026-08-17 20:55:38 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:38 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:38 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:38 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:38 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:38 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:38 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:38 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:38 INFO MSTransformManager::open Select data 2026-08-17 20:55:38 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:39 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:39 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05:00:21.5326 6.352706472deg' successfully parsed 2026-08-17 20:55:39 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:39 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:39 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:38.434040 End time: 2026-08-17 20:55:38.820665 2026-08-17 20:55:39 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:39 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:39 INFO tclean::::casa ########################################## 2026-08-17 20:55:39 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:39 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:39 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:39 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:39 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:39 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:39 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:39 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:39 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:39 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:39 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:39 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:39 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:39 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:39 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:39 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011241 2026-08-17 20:55:39 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:39 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:40 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:40 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:40 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:40 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:40 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:40 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:40 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:40 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:40 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:40 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:40 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:40 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:40 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:40 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:40 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:41 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:41 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:38.867620 End time: 2026-08-17 20:55:40.586103 2026-08-17 20:55:41 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:41 INFO tclean::::casa ########################################## 2026-08-17 20:55:41 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:41 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:41 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:41 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:41 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:41 2026****** 2026-08-17 20:55:41 INFO ImageFitter::fit+ 2026-08-17 20:55:41 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:41 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:41 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:41 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:41 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:41 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:41 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:41 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:41 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:41 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:41 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:41 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116872 Jy 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126486 Jy 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:41 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:41 INFO imstat::::casa ########################################## 2026-08-17 20:55:41 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:41 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:41 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:41 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:41 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:41 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:41 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:41 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:41 INFO imstat:::: Values --- 2026-08-17 20:55:41 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:41 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:41 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- minimum value [min]: -7.7777e-05 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:41 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:41 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:41 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:41 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:41 INFO imstat:::: Statistics --- 2026-08-17 20:55:41 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- Median of the pixel values [median]: -1.86705e-05 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7361e-05 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- IQR [quartile]: 3.56027e-05 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- First quartile [q1]: -3.45074e-05 Jy/beam 2026-08-17 20:55:41 INFO imstat:::: -- Third quartile [q3]: 1.09529e-06 Jy/beam 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:41 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777703e-05 4.999996e+00 2026-08-17 20:55:41 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:40.646707 End time: 2026-08-17 20:55:40.671942 2026-08-17 20:55:41 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:41 INFO imstat::::casa ########################################## 2026-08-17 20:55:41 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:41 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:41 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 05:00:21.5326 0.110875644rad' ) 2026-08-17 20:55:41 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:41 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:41 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:41 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:41 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:41 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:41 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:41 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:41 INFO MSTransformManager::open Select data 2026-08-17 20:55:41 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:41 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:41 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05:00:21.5326 0.110875644rad' successfully parsed 2026-08-17 20:55:41 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:41 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:41 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:40.686704 End time: 2026-08-17 20:55:41.148216 2026-08-17 20:55:41 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:41 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:41 INFO tclean::::casa ########################################## 2026-08-17 20:55:41 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:41 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:41 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:41 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:41 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:41 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:41 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:41 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:41 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:41 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:41 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:41 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:41 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:41 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:41 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:42 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013718 2026-08-17 20:55:42 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:42 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:42 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:42 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:42 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:42 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:42 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:42 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:43 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:43 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:43 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:41.174081 End time: 2026-08-17 20:55:42.606306 2026-08-17 20:55:43 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:43 INFO tclean::::casa ########################################## 2026-08-17 20:55:43 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:43 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:43 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:43 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:43 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:43 2026****** 2026-08-17 20:55:43 INFO ImageFitter::fit+ 2026-08-17 20:55:43 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:43 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:43 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:43 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:43 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:43 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:43 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:43 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:43 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:43 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:43 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:43 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- ra: 128.000012 +/- 0.000127 pixels 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:43 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:43 INFO imstat::::casa ########################################## 2026-08-17 20:55:43 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:43 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:43 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:43 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:43 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:43 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:43 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:43 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:43 INFO imstat:::: Values --- 2026-08-17 20:55:43 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:43 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:43 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- minimum value [min]: -7.77849e-05 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:43 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:55:43 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:43 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:55:43 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:43 INFO imstat:::: Statistics --- 2026-08-17 20:55:43 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73549e-05 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- IQR [quartile]: 3.56016e-05 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- First quartile [q1]: -3.45087e-05 Jy/beam 2026-08-17 20:55:43 INFO imstat:::: -- Third quartile [q3]: 1.0929e-06 Jy/beam 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:43 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778491e-05 4.999996e+00 2026-08-17 20:55:43 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:42.675241 End time: 2026-08-17 20:55:42.700786 2026-08-17 20:55:43 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:43 INFO imstat::::casa ########################################## 2026-08-17 20:55:43 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:43 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:43 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 75.089719167deg +006d21m09.7433' ) 2026-08-17 20:55:43 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:43 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:43 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:43 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:43 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:43 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:43 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:43 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:43 INFO MSTransformManager::open Select data 2026-08-17 20:55:43 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:43 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:43 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 75.089719167deg +006d21m09.7433' successfully parsed 2026-08-17 20:55:43 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:43 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:43 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:42.716185 End time: 2026-08-17 20:55:43.059711 2026-08-17 20:55:43 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:43 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:43 INFO tclean::::casa ########################################## 2026-08-17 20:55:43 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:43 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:43 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:43 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:43 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:43 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:43 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:43 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:43 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:43 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:43 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:43 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:43 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:43 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:43 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:43 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01827 2026-08-17 20:55:43 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:43 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:43 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:44 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:44 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:44 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:44 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:44 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:44 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:44 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:44 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:45 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:43.084570 End time: 2026-08-17 20:55:44.588724 2026-08-17 20:55:45 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:45 INFO tclean::::casa ########################################## 2026-08-17 20:55:45 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:45 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:45 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:45 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:45 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:45 2026****** 2026-08-17 20:55:45 INFO ImageFitter::fit+ 2026-08-17 20:55:45 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:45 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:45 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:45 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:45 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:45 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:45 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:45 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:45 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:45 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:45 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:45 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116867 Jy 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126483 Jy 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- dec: 127.999996 +/- 0.000097 pixels 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:45 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:45 INFO imstat::::casa ########################################## 2026-08-17 20:55:45 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:45 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:45 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:45 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:45 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:45 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:45 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:45 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:45 INFO imstat:::: Values --- 2026-08-17 20:55:45 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:45 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:45 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- minimum value [min]: -7.77768e-05 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:45 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:45 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:45 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:45 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:45 INFO imstat:::: Statistics --- 2026-08-17 20:55:45 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- Median of the pixel values [median]: -1.86705e-05 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73609e-05 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- IQR [quartile]: 3.56013e-05 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- First quartile [q1]: -3.4507e-05 Jy/beam 2026-08-17 20:55:45 INFO imstat:::: -- Third quartile [q3]: 1.09435e-06 Jy/beam 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:45 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777678e-05 4.999996e+00 2026-08-17 20:55:45 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:44.633072 End time: 2026-08-17 20:55:44.653715 2026-08-17 20:55:45 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:45 INFO imstat::::casa ########################################## 2026-08-17 20:55:45 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:45 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:45 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 75.089719167deg 00:25:24.6496' ) 2026-08-17 20:55:45 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:45 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:45 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:45 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:45 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:45 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:45 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:45 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:45 INFO MSTransformManager::open Select data 2026-08-17 20:55:45 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:45 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "00:25:24.6496" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:55:45 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 75.089719167deg 00:25:24.6496' successfully parsed 2026-08-17 20:55:45 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:45 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:45 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:44.665916 End time: 2026-08-17 20:55:45.106229 2026-08-17 20:55:45 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:45 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:45 INFO tclean::::casa ########################################## 2026-08-17 20:55:45 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:45 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:45 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:45 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:45 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:45 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:45 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:45 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:45 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:45 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:45 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:45 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:45 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:45 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:45 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:45 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010349 2026-08-17 20:55:45 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:45 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:45 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:46 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:46 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:46 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:46 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:46 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:46 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:46 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:46 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:46 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:45.129991 End time: 2026-08-17 20:55:46.428408 2026-08-17 20:55:46 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:46 INFO tclean::::casa ########################################## 2026-08-17 20:55:46 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:46 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:46 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:46 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:46 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:46 2026****** 2026-08-17 20:55:46 INFO ImageFitter::fit+ 2026-08-17 20:55:46 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:46 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:46 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:46 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:46 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:46 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:46 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:46 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:46 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:46 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:46 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:46 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116903 Jy 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126517 Jy 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999994 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000038 +/- 0.000777 arcsec 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- ra: 127.999939 +/- 0.000127 pixels 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- dec: 127.999957 +/- 0.000097 pixels 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:46 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:46 INFO imstat::::casa ########################################## 2026-08-17 20:55:46 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:46 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:46 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:46 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:46 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:46 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:46 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:46 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.865, I, 999981612.9Hz to 19:52:21.081, +40.22.53.889, I, 999981612.9Hz) 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-08-17 20:55:46 INFO imstat:::: Values --- 2026-08-17 20:55:46 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:46 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:46 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- minimum value [min]: -7.78731e-05 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:46 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:46 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:46 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:46 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:46 INFO imstat:::: Statistics --- 2026-08-17 20:55:46 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- Median of the pixel values [median]: -1.86503e-05 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73798e-05 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- IQR [quartile]: 3.56966e-05 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- First quartile [q1]: -3.45352e-05 Jy/beam 2026-08-17 20:55:46 INFO imstat:::: -- Third quartile [q3]: 1.16146e-06 Jy/beam 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:46 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.787306e-05 4.999996e+00 2026-08-17 20:55:46 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:46.472561 End time: 2026-08-17 20:55:46.493715 2026-08-17 20:55:46 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:46 INFO imstat::::casa ########################################## 2026-08-17 20:55:47 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:47 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:47 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 75.089719167deg 6.352706472deg' ) 2026-08-17 20:55:47 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:47 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:47 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:47 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:47 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:47 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:47 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:47 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:47 INFO MSTransformManager::open Select data 2026-08-17 20:55:47 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:47 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:47 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 75.089719167deg 6.352706472deg' successfully parsed 2026-08-17 20:55:47 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:47 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:47 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:46.506291 End time: 2026-08-17 20:55:46.854003 2026-08-17 20:55:47 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:47 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:47 INFO tclean::::casa ########################################## 2026-08-17 20:55:47 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:47 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:47 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:47 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:47 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:47 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:47 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:47 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:47 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:47 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:47 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:47 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:47 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:47 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:47 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:47 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.0146 2026-08-17 20:55:47 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:47 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:47 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:47 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:47 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:47 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:47 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:47 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:48 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:48 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:48 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:48 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:48 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:48 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:46.878937 End time: 2026-08-17 20:55:48.220224 2026-08-17 20:55:48 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:48 INFO tclean::::casa ########################################## 2026-08-17 20:55:48 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:48 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:48 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:48 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:48 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:48 2026****** 2026-08-17 20:55:48 INFO ImageFitter::fit+ 2026-08-17 20:55:48 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:48 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:48 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:48 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:48 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:48 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:48 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:48 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:48 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:48 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:48 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:48 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.00011687 Jy 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- dec: 127.999996 +/- 0.000097 pixels 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:48 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:48 INFO imstat::::casa ########################################## 2026-08-17 20:55:48 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:48 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:48 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:48 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:48 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:48 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:48 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:48 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:48 INFO imstat:::: Values --- 2026-08-17 20:55:48 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:48 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:48 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- minimum value [min]: -7.77771e-05 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:48 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:48 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:48 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:48 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:48 INFO imstat:::: Statistics --- 2026-08-17 20:55:48 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- Median of the pixel values [median]: -1.86715e-05 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73619e-05 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- IQR [quartile]: 3.56021e-05 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- First quartile [q1]: -3.45061e-05 Jy/beam 2026-08-17 20:55:48 INFO imstat:::: -- Third quartile [q3]: 1.09605e-06 Jy/beam 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:48 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777705e-05 4.999996e+00 2026-08-17 20:55:48 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:48.266692 End time: 2026-08-17 20:55:48.290191 2026-08-17 20:55:48 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:48 INFO imstat::::casa ########################################## 2026-08-17 20:55:48 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:48 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:48 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 75.089719167deg 0.110875644rad' ) 2026-08-17 20:55:48 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:48 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:48 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:48 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:48 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:48 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:48 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:48 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:48 INFO MSTransformManager::open Select data 2026-08-17 20:55:48 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:48 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:48 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 75.089719167deg 0.110875644rad' successfully parsed 2026-08-17 20:55:48 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:49 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:49 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:48.303878 End time: 2026-08-17 20:55:48.675404 2026-08-17 20:55:49 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:49 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:49 INFO tclean::::casa ########################################## 2026-08-17 20:55:49 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:49 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:49 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:49 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:49 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:49 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:49 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:49 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:49 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:49 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:49 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:49 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:49 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:49 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:49 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:49 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011609 2026-08-17 20:55:49 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:49 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:49 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:49 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:49 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:49 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:49 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:49 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:49 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:49 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:49 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:50 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:50 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:50 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:50 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:50 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:50 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:50 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:50 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:50 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:50 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:48.700830 End time: 2026-08-17 20:55:50.121955 2026-08-17 20:55:50 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:50 INFO tclean::::casa ########################################## 2026-08-17 20:55:50 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:50 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:50 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:50 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:50 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:50 2026****** 2026-08-17 20:55:50 INFO ImageFitter::fit+ 2026-08-17 20:55:50 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:50 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:50 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:50 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:50 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:50 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:50 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:50 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:50 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:50 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:50 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:50 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116868 Jy 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126482 Jy 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- ra: 128.000012 +/- 0.000127 pixels 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:50 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:50 INFO imstat::::casa ########################################## 2026-08-17 20:55:50 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:50 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:50 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:50 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:50 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:50 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:50 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:50 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:50 INFO imstat:::: Values --- 2026-08-17 20:55:50 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:50 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:50 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- minimum value [min]: -7.77855e-05 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:50 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:55:50 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:50 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:55:50 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:50 INFO imstat:::: Statistics --- 2026-08-17 20:55:50 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- Median of the pixel values [median]: -1.86732e-05 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73562e-05 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- IQR [quartile]: 3.56008e-05 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- First quartile [q1]: -3.45107e-05 Jy/beam 2026-08-17 20:55:50 INFO imstat:::: -- Third quartile [q3]: 1.09015e-06 Jy/beam 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:50 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778549e-05 4.999996e+00 2026-08-17 20:55:50 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:50.183284 End time: 2026-08-17 20:55:50.208395 2026-08-17 20:55:50 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:50 INFO imstat::::casa ########################################## 2026-08-17 20:55:50 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:50 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:50 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 1.310562834rad +006d21m09.7433' ) 2026-08-17 20:55:50 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:50 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:50 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:50 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:50 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:50 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:50 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:50 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:50 INFO MSTransformManager::open Select data 2026-08-17 20:55:50 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:50 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:50 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 1.310562834rad +006d21m09.7433' successfully parsed 2026-08-17 20:55:50 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:51 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:51 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:50.222981 End time: 2026-08-17 20:55:50.648246 2026-08-17 20:55:51 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:51 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:51 INFO tclean::::casa ########################################## 2026-08-17 20:55:51 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:51 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:51 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:51 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:51 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:51 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:51 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:51 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:51 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:51 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:51 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:51 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:51 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:51 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:51 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:51 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01823 2026-08-17 20:55:51 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:51 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:51 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:51 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:51 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:51 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:51 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:52 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:52 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:52 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:52 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:52 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:52 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:52 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:52 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:52 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:50.680700 End time: 2026-08-17 20:55:52.228003 2026-08-17 20:55:52 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:52 INFO tclean::::casa ########################################## 2026-08-17 20:55:52 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:52 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:52 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:52 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:52 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:52 2026****** 2026-08-17 20:55:52 INFO ImageFitter::fit+ 2026-08-17 20:55:52 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:52 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:52 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:52 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:52 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:52 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:52 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:52 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:52 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:52 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:52 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:52 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116872 Jy 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000006 +/- 0.000777 arcsec 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- ra: 128.000007 +/- 0.000127 pixels 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- dec: 127.999994 +/- 0.000097 pixels 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:52 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:52 INFO imstat::::casa ########################################## 2026-08-17 20:55:52 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:52 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:52 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:52 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:52 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:52 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:52 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:52 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:52 INFO imstat:::: Values --- 2026-08-17 20:55:52 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:52 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:52 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- minimum value [min]: -7.77801e-05 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:52 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:52 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:52 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:52 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:52 INFO imstat:::: Statistics --- 2026-08-17 20:55:52 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- Median of the pixel values [median]: -1.86669e-05 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73635e-05 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- IQR [quartile]: 3.56081e-05 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- First quartile [q1]: -3.45085e-05 Jy/beam 2026-08-17 20:55:52 INFO imstat:::: -- Third quartile [q3]: 1.09959e-06 Jy/beam 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:52 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778013e-05 4.999996e+00 2026-08-17 20:55:52 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:52.293256 End time: 2026-08-17 20:55:52.318568 2026-08-17 20:55:52 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:52 INFO imstat::::casa ########################################## 2026-08-17 20:55:52 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:52 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:52 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 1.310562834rad 00:25:24.6496' ) 2026-08-17 20:55:52 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:52 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:52 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:52 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:52 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:52 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:52 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:52 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:52 INFO MSTransformManager::open Select data 2026-08-17 20:55:52 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:53 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "00:25:24.6496" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:55:53 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 1.310562834rad 00:25:24.6496' successfully parsed 2026-08-17 20:55:53 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:53 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:53 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:52.333292 End time: 2026-08-17 20:55:52.765533 2026-08-17 20:55:53 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:53 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:53 INFO tclean::::casa ########################################## 2026-08-17 20:55:53 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:53 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:53 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:53 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:53 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:53 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:53 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:53 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:53 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:53 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:53 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:53 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:53 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:53 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:53 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:53 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.018958 2026-08-17 20:55:53 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:53 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:53 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:53 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:53 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:53 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:53 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:54 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:54 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:54 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:54 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:54 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:54 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:52.791334 End time: 2026-08-17 20:55:54.235493 2026-08-17 20:55:54 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:54 INFO tclean::::casa ########################################## 2026-08-17 20:55:54 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:54 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:54 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:54 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:54 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:54 2026****** 2026-08-17 20:55:54 INFO ImageFitter::fit+ 2026-08-17 20:55:54 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:54 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:54 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:54 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:54 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:54 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:54 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:54 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:54 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:54 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:54 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:54 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116905 Jy 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012652 Jy 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999994 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000041 +/- 0.000777 arcsec 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- ra: 127.999941 +/- 0.000127 pixels 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- dec: 127.999954 +/- 0.000097 pixels 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:54 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:54 INFO imstat::::casa ########################################## 2026-08-17 20:55:54 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:54 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:54 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:54 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:54 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:54 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:54 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:54 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.865, I, 999981612.9Hz to 19:52:21.081, +40.22.53.889, I, 999981612.9Hz) 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-08-17 20:55:54 INFO imstat:::: Values --- 2026-08-17 20:55:54 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:54 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:54 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- minimum value [min]: -7.78774e-05 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:54 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:54 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:54 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:54 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:54 INFO imstat:::: Statistics --- 2026-08-17 20:55:54 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- Median of the pixel values [median]: -1.86532e-05 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73779e-05 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- IQR [quartile]: 3.5701e-05 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- First quartile [q1]: -3.45356e-05 Jy/beam 2026-08-17 20:55:54 INFO imstat:::: -- Third quartile [q3]: 1.16544e-06 Jy/beam 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:54 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.787745e-05 4.999996e+00 2026-08-17 20:55:54 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:54.280148 End time: 2026-08-17 20:55:54.301082 2026-08-17 20:55:54 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:54 INFO imstat::::casa ########################################## 2026-08-17 20:55:54 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:54 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:54 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 1.310562834rad 6.352706472deg' ) 2026-08-17 20:55:54 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:54 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:54 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:54 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:54 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:54 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:54 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:54 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:54 INFO MSTransformManager::open Select data 2026-08-17 20:55:54 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:55 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:55 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 1.310562834rad 6.352706472deg' successfully parsed 2026-08-17 20:55:55 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:55 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:55 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:54.313935 End time: 2026-08-17 20:55:54.733982 2026-08-17 20:55:55 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:55 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:55 INFO tclean::::casa ########################################## 2026-08-17 20:55:55 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:55 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:55 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:55 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:55 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:55 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:55 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:55 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:55 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:55 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:55 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:55 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:55 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:55 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:55 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:55 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011352 2026-08-17 20:55:55 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:55 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:55 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:55 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:55 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:55 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:55 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:55 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:55 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:55 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:55:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:56 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:56 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:56 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:56 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:56 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:56 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:54.759070 End time: 2026-08-17 20:55:56.143054 2026-08-17 20:55:56 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:56 INFO tclean::::casa ########################################## 2026-08-17 20:55:56 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:56 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:56 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:56 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:56 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:56 2026****** 2026-08-17 20:55:56 INFO ImageFitter::fit+ 2026-08-17 20:55:56 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:56 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:56 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:56 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:56 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:56 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:56 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:56 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:56 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:56 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:56 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:56 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116868 Jy 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000006 +/- 0.000777 arcsec 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- ra: 128.000007 +/- 0.000127 pixels 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- dec: 127.999994 +/- 0.000097 pixels 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:56 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:56 INFO imstat::::casa ########################################## 2026-08-17 20:55:56 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:56 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:56 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:56 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:56 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:56 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:56 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:56 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:56 INFO imstat:::: Values --- 2026-08-17 20:55:56 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:56 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:56 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- minimum value [min]: -7.77798e-05 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:56 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:55:56 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:56 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:55:56 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:56 INFO imstat:::: Statistics --- 2026-08-17 20:55:56 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- Median of the pixel values [median]: -1.86675e-05 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73645e-05 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- IQR [quartile]: 3.56077e-05 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- First quartile [q1]: -3.45073e-05 Jy/beam 2026-08-17 20:55:56 INFO imstat:::: -- Third quartile [q3]: 1.1004e-06 Jy/beam 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:56 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777975e-05 4.999996e+00 2026-08-17 20:55:56 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:56.185284 End time: 2026-08-17 20:55:56.205657 2026-08-17 20:55:56 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:56 INFO imstat::::casa ########################################## 2026-08-17 20:55:56 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:56 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:56 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='GALACTIC 1.310562834rad 0.110875644rad' ) 2026-08-17 20:55:56 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:56 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:56 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:56 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:56 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:56 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:56 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:56 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:56 INFO MSTransformManager::open Select data 2026-08-17 20:55:56 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:56 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:56 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 1.310562834rad 0.110875644rad' successfully parsed 2026-08-17 20:55:56 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:57 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:57 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:56.217859 End time: 2026-08-17 20:55:56.648300 2026-08-17 20:55:57 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:57 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:57 INFO tclean::::casa ########################################## 2026-08-17 20:55:57 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:57 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:57 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:57 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:57 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:57 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:57 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:57 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:57 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:57 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:57 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:57 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:57 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:57 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:57 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:57 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.017766 2026-08-17 20:55:57 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:57 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:57 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:57 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:57 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:57 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:57 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:55:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:55:57 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:55:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:55:57 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:55:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:55:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:55:58 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:55:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:55:58 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:55:58 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:55:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:55:58 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:55:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:55:58 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:55:58 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:55:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:55:58 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:55:58 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:55:58 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:55:58 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:58 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:55:58 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:56.671368 End time: 2026-08-17 20:55:58.197788 2026-08-17 20:55:58 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:55:58 INFO tclean::::casa ########################################## 2026-08-17 20:55:58 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:55:58 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:58 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:55:58 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:55:58 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:55:58 2026****** 2026-08-17 20:55:58 INFO ImageFitter::fit+ 2026-08-17 20:55:58 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:55:58 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:55:58 INFO ImageFitter::fit+ --- region: 2026-08-17 20:55:58 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:55:58 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:55:58 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:55:58 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:55:58 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:55:58 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:55:58 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:58 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:55:58 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126484 Jy 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000002 +/- 0.000777 arcsec 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- ra: 128.000014 +/- 0.000127 pixels 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- dec: 127.999998 +/- 0.000097 pixels 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:55:58 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:55:58 INFO imstat::::casa ########################################## 2026-08-17 20:55:58 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:55:58 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:55:58 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:55:58 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:55:58 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:55:58 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:55:58 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:55:58 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:55:58 INFO imstat:::: Values --- 2026-08-17 20:55:58 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:55:58 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:55:58 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- minimum value [min]: -7.77816e-05 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:55:58 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:55:58 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:55:58 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:55:58 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:55:58 INFO imstat:::: Statistics --- 2026-08-17 20:55:58 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- Median of the pixel values [median]: -1.8676e-05 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73584e-05 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- IQR [quartile]: 3.56038e-05 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- First quartile [q1]: -3.45104e-05 Jy/beam 2026-08-17 20:55:58 INFO imstat:::: -- Third quartile [q3]: 1.09331e-06 Jy/beam 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:55:58 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778164e-05 4.999996e+00 2026-08-17 20:55:58 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:55:58.241427 End time: 2026-08-17 20:55:58.263976 2026-08-17 20:55:58 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:55:58 INFO imstat::::casa ########################################## 2026-08-17 20:55:58 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:58 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:55:58 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19h52m05.65239 39d58m05.8512' ) 2026-08-17 20:55:58 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:55:58 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:55:58 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:55:58 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:55:58 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:55:58 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:55:58 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:55:58 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:55:58 INFO MSTransformManager::open Select data 2026-08-17 20:55:58 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:55:59 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:55:59 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19h52m05.65239 39d58m05.8512' successfully parsed 2026-08-17 20:55:59 INFO phaseshift::::casa Shift phase center 2026-08-17 20:55:59 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:55:59 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:55:58.277500 End time: 2026-08-17 20:55:58.767869 2026-08-17 20:55:59 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:55:59 INFO phaseshift::::casa ########################################## 2026-08-17 20:55:59 INFO tclean::::casa ########################################## 2026-08-17 20:55:59 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:55:59 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:55:59 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:55:59 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:55:59 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:55:59 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:59 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:55:59 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:55:59 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:55:59 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:55:59 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:55:59 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:55:59 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:55:59 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:55:59 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:55:59 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.024387 2026-08-17 20:55:59 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:55:59 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:55:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:55:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:55:59 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:55:59 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:55:59 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:55:59 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:55:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:55:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:55:59 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:55:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:00 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:00 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:00 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:00 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:00 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:00 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:55:58.797432 End time: 2026-08-17 20:56:00.304001 2026-08-17 20:56:00 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:00 INFO tclean::::casa ########################################## 2026-08-17 20:56:00 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:00 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:00 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:00 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:00 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:00 2026****** 2026-08-17 20:56:00 INFO ImageFitter::fit+ 2026-08-17 20:56:00 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:00 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:00 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:00 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:00 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:00 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:00 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:00 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:00 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:00 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:00 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:00 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:00 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:00 INFO imstat::::casa ########################################## 2026-08-17 20:56:00 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:00 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:00 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:00 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:00 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:00 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:00 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:00 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:00 INFO imstat:::: Values --- 2026-08-17 20:56:00 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:00 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:00 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- minimum value [min]: -7.77826e-05 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:00 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:00 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:00 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:00 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:00 INFO imstat:::: Statistics --- 2026-08-17 20:56:00 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- Median of the pixel values [median]: -1.86649e-05 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73604e-05 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- IQR [quartile]: 3.56026e-05 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- First quartile [q1]: -3.45067e-05 Jy/beam 2026-08-17 20:56:00 INFO imstat:::: -- Third quartile [q3]: 1.09593e-06 Jy/beam 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:00 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778264e-05 4.999996e+00 2026-08-17 20:56:00 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:00.345712 End time: 2026-08-17 20:56:00.366088 2026-08-17 20:56:00 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:00 INFO imstat::::casa ########################################## 2026-08-17 20:56:00 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:00 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:00 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19h52m05.65239 02:39:52.3901' ) 2026-08-17 20:56:00 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:00 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:00 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:00 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:00 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:00 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:00 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:00 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:00 INFO MSTransformManager::open Select data 2026-08-17 20:56:00 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:01 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:39:52.3901" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:56:01 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19h52m05.65239 02:39:52.3901' successfully parsed 2026-08-17 20:56:01 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:01 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:01 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:00.378603 End time: 2026-08-17 20:56:00.750334 2026-08-17 20:56:01 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:01 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:01 INFO tclean::::casa ########################################## 2026-08-17 20:56:01 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:01 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:01 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:01 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:01 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:01 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:01 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:01 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:01 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:01 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:01 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:01 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:01 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:01 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:01 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:01 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.019538 2026-08-17 20:56:01 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:01 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:01 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:01 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:01 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:01 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:01 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:01 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:56:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:02 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:02 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:02 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:02 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:02 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:02 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:00.776091 End time: 2026-08-17 20:56:02.363443 2026-08-17 20:56:02 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:02 INFO tclean::::casa ########################################## 2026-08-17 20:56:02 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:02 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:02 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:02 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:02 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:02 2026****** 2026-08-17 20:56:02 INFO ImageFitter::fit+ 2026-08-17 20:56:02 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:02 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:02 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:02 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:02 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:02 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:02 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:02 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:02 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:02 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:02 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:02 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.00011688 Jy 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126496 Jy 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000034 +/- 0.000777 arcsec 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- dec: 127.999963 +/- 0.000097 pixels 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:02 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:02 INFO imstat::::casa ########################################## 2026-08-17 20:56:02 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:02 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:02 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:02 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:02 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:02 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:02 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:02 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.865, I, 999981612.9Hz to 19:52:21.081, +40.22.53.889, I, 999981612.9Hz) 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-08-17 20:56:02 INFO imstat:::: Values --- 2026-08-17 20:56:02 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:02 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:02 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- minimum value [min]: -7.78225e-05 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:02 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:02 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:02 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:02 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:02 INFO imstat:::: Statistics --- 2026-08-17 20:56:02 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- Median of the pixel values [median]: -1.86781e-05 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73751e-05 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- IQR [quartile]: 3.56365e-05 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- First quartile [q1]: -3.45278e-05 Jy/beam 2026-08-17 20:56:02 INFO imstat:::: -- Third quartile [q3]: 1.10869e-06 Jy/beam 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:02 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.782251e-05 4.999996e+00 2026-08-17 20:56:02 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:02.422472 End time: 2026-08-17 20:56:02.446530 2026-08-17 20:56:02 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:02 INFO imstat::::casa ########################################## 2026-08-17 20:56:02 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:02 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:02 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19h52m05.65239 39.968292000deg' ) 2026-08-17 20:56:02 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:02 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:02 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:02 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:02 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:02 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:02 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:02 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:02 INFO MSTransformManager::open Select data 2026-08-17 20:56:02 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:03 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:03 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19h52m05.65239 39.968292000deg' successfully parsed 2026-08-17 20:56:03 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:03 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:03 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:02.460920 End time: 2026-08-17 20:56:02.913809 2026-08-17 20:56:03 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:03 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:03 INFO tclean::::casa ########################################## 2026-08-17 20:56:03 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:03 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:03 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:03 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:03 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:03 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:03 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:03 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:03 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:03 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:03 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:03 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:03 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:03 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:03 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:03 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010904 2026-08-17 20:56:03 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:03 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:03 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:03 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:03 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:03 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:03 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:03 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:03 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:04 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:04 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:04 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:04 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:04 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:04 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:02.939053 End time: 2026-08-17 20:56:04.202080 2026-08-17 20:56:04 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:04 INFO tclean::::casa ########################################## 2026-08-17 20:56:04 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:04 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:04 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:04 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:04 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:04 2026****** 2026-08-17 20:56:04 INFO ImageFitter::fit+ 2026-08-17 20:56:04 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:04 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:04 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:04 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:04 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:04 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:04 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:04 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:04 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:04 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:04 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:04 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:04 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:04 INFO imstat::::casa ########################################## 2026-08-17 20:56:04 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:04 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:04 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:04 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:04 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:04 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:04 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:04 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:04 INFO imstat:::: Values --- 2026-08-17 20:56:04 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:04 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:04 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- minimum value [min]: -7.77826e-05 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:04 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:04 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:04 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:04 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:04 INFO imstat:::: Statistics --- 2026-08-17 20:56:04 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- Median of the pixel values [median]: -1.86649e-05 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73604e-05 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- IQR [quartile]: 3.56026e-05 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- First quartile [q1]: -3.45067e-05 Jy/beam 2026-08-17 20:56:04 INFO imstat:::: -- Third quartile [q3]: 1.09593e-06 Jy/beam 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:04 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778264e-05 4.999996e+00 2026-08-17 20:56:04 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:04.245568 End time: 2026-08-17 20:56:04.266392 2026-08-17 20:56:04 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:04 INFO imstat::::casa ########################################## 2026-08-17 20:56:04 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:04 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:04 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19h52m05.65239 0.697578292rad' ) 2026-08-17 20:56:04 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:04 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:04 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:04 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:04 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:04 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:04 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:04 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:04 INFO MSTransformManager::open Select data 2026-08-17 20:56:04 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:04 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:04 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19h52m05.65239 0.697578292rad' successfully parsed 2026-08-17 20:56:04 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:05 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:05 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:04.278891 End time: 2026-08-17 20:56:04.699839 2026-08-17 20:56:05 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:05 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:05 INFO tclean::::casa ########################################## 2026-08-17 20:56:05 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:05 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:05 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:05 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:05 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:05 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:05 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:05 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:05 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:05 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:05 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:05 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:05 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:05 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:05 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:05 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011319 2026-08-17 20:56:05 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:05 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:05 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:05 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:05 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:05 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:05 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:05 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:05 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:05 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:05 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:56:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:06 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:06 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:06 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:06 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:06 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:06 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:04.738805 End time: 2026-08-17 20:56:06.038327 2026-08-17 20:56:06 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:06 INFO tclean::::casa ########################################## 2026-08-17 20:56:06 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:06 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:06 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:06 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:06 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:06 2026****** 2026-08-17 20:56:06 INFO ImageFitter::fit+ 2026-08-17 20:56:06 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:06 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:06 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:06 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:06 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:06 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:06 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:06 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:06 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:06 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:06 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:06 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000008 +/- 0.000777 arcsec 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- dec: 127.999992 +/- 0.000097 pixels 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:06 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:06 INFO imstat::::casa ########################################## 2026-08-17 20:56:06 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:06 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:06 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:06 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:06 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:06 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:06 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:06 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:06 INFO imstat:::: Values --- 2026-08-17 20:56:06 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:06 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:06 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- minimum value [min]: -7.7789e-05 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:06 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:06 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:06 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:06 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:06 INFO imstat:::: Statistics --- 2026-08-17 20:56:06 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- Median of the pixel values [median]: -1.86647e-05 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73649e-05 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- IQR [quartile]: 3.56182e-05 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- First quartile [q1]: -3.45079e-05 Jy/beam 2026-08-17 20:56:06 INFO imstat:::: -- Third quartile [q3]: 1.11022e-06 Jy/beam 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:06 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778897e-05 4.999996e+00 2026-08-17 20:56:06 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:06.113248 End time: 2026-08-17 20:56:06.140947 2026-08-17 20:56:06 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:06 INFO imstat::::casa ########################################## 2026-08-17 20:56:06 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:06 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:06 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19:52:05.6524 39d58m05.8512' ) 2026-08-17 20:56:06 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:06 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:06 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:06 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:06 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:06 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:06 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:06 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:06 INFO MSTransformManager::open Select data 2026-08-17 20:56:06 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:06 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:06 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19:52:05.6524 39d58m05.8512' successfully parsed 2026-08-17 20:56:06 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:07 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:07 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:06.157009 End time: 2026-08-17 20:56:06.616133 2026-08-17 20:56:07 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:07 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:07 INFO tclean::::casa ########################################## 2026-08-17 20:56:07 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:07 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:07 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:07 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:07 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:07 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:07 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:07 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:07 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:07 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:07 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:07 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:07 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:07 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:07 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:07 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010903 2026-08-17 20:56:07 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:07 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:07 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:07 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:07 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:07 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:07 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:07 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:07 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:07 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:07 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:56:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:08 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:08 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:08 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:08 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:08 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:08 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:06.641551 End time: 2026-08-17 20:56:08.187562 2026-08-17 20:56:08 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:08 INFO tclean::::casa ########################################## 2026-08-17 20:56:08 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:08 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:08 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:08 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:08 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:08 2026****** 2026-08-17 20:56:08 INFO ImageFitter::fit+ 2026-08-17 20:56:08 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:08 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:08 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:08 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:08 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:08 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:08 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:08 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:08 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:08 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:08 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:08 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- ra: 128.000009 +/- 0.000127 pixels 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:08 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:08 INFO imstat::::casa ########################################## 2026-08-17 20:56:08 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:08 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:08 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:08 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:08 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:08 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:08 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:08 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:08 INFO imstat:::: Values --- 2026-08-17 20:56:08 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:08 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:08 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- minimum value [min]: -7.77773e-05 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:08 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:56:08 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:08 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:56:08 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:08 INFO imstat:::: Statistics --- 2026-08-17 20:56:08 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- Median of the pixel values [median]: -1.86786e-05 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73603e-05 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- IQR [quartile]: 3.56014e-05 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- First quartile [q1]: -3.45038e-05 Jy/beam 2026-08-17 20:56:08 INFO imstat:::: -- Third quartile [q3]: 1.09758e-06 Jy/beam 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:08 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777732e-05 4.999996e+00 2026-08-17 20:56:08 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:08.262273 End time: 2026-08-17 20:56:08.290149 2026-08-17 20:56:08 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:08 INFO imstat::::casa ########################################## 2026-08-17 20:56:08 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:08 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:08 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19:52:05.6524 02:39:52.3901' ) 2026-08-17 20:56:08 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:08 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:08 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:08 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:08 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:08 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:08 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:08 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:08 INFO MSTransformManager::open Select data 2026-08-17 20:56:08 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:09 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:39:52.3901" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:56:09 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19:52:05.6524 02:39:52.3901' successfully parsed 2026-08-17 20:56:09 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:09 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:09 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:08.306373 End time: 2026-08-17 20:56:08.794164 2026-08-17 20:56:09 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:09 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:09 INFO tclean::::casa ########################################## 2026-08-17 20:56:09 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:09 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:09 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:09 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:09 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:09 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:09 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:09 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:09 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:09 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:09 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:09 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:09 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:09 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:09 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:09 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.012757 2026-08-17 20:56:09 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:09 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:09 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:09 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:09 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:09 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:10 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:10 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:10 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:10 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:10 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:10 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:10 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:10 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:10 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:08.826445 End time: 2026-08-17 20:56:10.260972 2026-08-17 20:56:10 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:10 INFO tclean::::casa ########################################## 2026-08-17 20:56:10 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:10 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:10 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:10 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:10 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:10 2026****** 2026-08-17 20:56:10 INFO ImageFitter::fit+ 2026-08-17 20:56:10 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:10 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:10 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:10 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:10 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:10 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:10 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:10 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:10 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:10 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:10 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:10 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116878 Jy 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126494 Jy 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000034 +/- 0.000777 arcsec 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- ra: 128.000008 +/- 0.000127 pixels 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- dec: 127.999963 +/- 0.000097 pixels 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:10 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:10 INFO imstat::::casa ########################################## 2026-08-17 20:56:10 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:10 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:10 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:10 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:10 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:10 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:10 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:10 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.865, I, 999981612.9Hz to 19:52:21.081, +40.22.53.889, I, 999981612.9Hz) 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-08-17 20:56:10 INFO imstat:::: Values --- 2026-08-17 20:56:10 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:10 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:10 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- minimum value [min]: -7.78143e-05 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:10 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:10 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:10 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:10 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:10 INFO imstat:::: Statistics --- 2026-08-17 20:56:10 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- Median of the pixel values [median]: -1.86838e-05 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73769e-05 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- IQR [quartile]: 3.5634e-05 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- First quartile [q1]: -3.45216e-05 Jy/beam 2026-08-17 20:56:10 INFO imstat:::: -- Third quartile [q3]: 1.1124e-06 Jy/beam 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:10 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.781426e-05 4.999996e+00 2026-08-17 20:56:10 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:10.304931 End time: 2026-08-17 20:56:10.325503 2026-08-17 20:56:10 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:10 INFO imstat::::casa ########################################## 2026-08-17 20:56:10 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:10 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:10 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19:52:05.6524 39.968292000deg' ) 2026-08-17 20:56:10 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:10 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:10 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:10 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:10 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:10 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:10 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:10 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:10 INFO MSTransformManager::open Select data 2026-08-17 20:56:10 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:11 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:11 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19:52:05.6524 39.968292000deg' successfully parsed 2026-08-17 20:56:11 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:11 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:11 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:10.338298 End time: 2026-08-17 20:56:10.827780 2026-08-17 20:56:11 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:11 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:11 INFO tclean::::casa ########################################## 2026-08-17 20:56:11 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:11 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:11 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:11 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:11 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:11 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:11 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:11 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:11 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:11 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:11 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:11 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:11 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:11 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:11 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:11 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011072 2026-08-17 20:56:11 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:11 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:11 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:11 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:11 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:12 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:12 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:12 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:56:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:12 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:12 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:12 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:12 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:12 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:12 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:10.866423 End time: 2026-08-17 20:56:12.417039 2026-08-17 20:56:12 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:12 INFO tclean::::casa ########################################## 2026-08-17 20:56:12 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:12 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:12 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:12 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:12 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:12 2026****** 2026-08-17 20:56:12 INFO ImageFitter::fit+ 2026-08-17 20:56:12 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:12 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:12 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:12 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:12 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:12 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:12 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:12 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:12 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:12 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:12 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:12 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- ra: 128.000009 +/- 0.000127 pixels 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:12 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:12 INFO imstat::::casa ########################################## 2026-08-17 20:56:12 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:12 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:12 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:12 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:12 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:12 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:12 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:12 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:12 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:12 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:12 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:12 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:12 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:12 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:13 INFO imstat:::: Values --- 2026-08-17 20:56:13 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:13 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:13 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- minimum value [min]: -7.77773e-05 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:13 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-08-17 20:56:13 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:13 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-08-17 20:56:13 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:13 INFO imstat:::: Statistics --- 2026-08-17 20:56:13 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- Median of the pixel values [median]: -1.86786e-05 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73603e-05 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- IQR [quartile]: 3.56014e-05 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- First quartile [q1]: -3.45038e-05 Jy/beam 2026-08-17 20:56:13 INFO imstat:::: -- Third quartile [q3]: 1.09758e-06 Jy/beam 2026-08-17 20:56:13 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:13 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:13 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:13 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:13 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:13 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:13 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.777732e-05 4.999996e+00 2026-08-17 20:56:13 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:12.479585 End time: 2026-08-17 20:56:12.504500 2026-08-17 20:56:13 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:13 INFO imstat::::casa ########################################## 2026-08-17 20:56:13 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:13 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:13 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19:52:05.6524 0.697578292rad' ) 2026-08-17 20:56:13 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:13 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:13 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:13 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:13 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:13 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:13 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:13 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:13 INFO MSTransformManager::open Select data 2026-08-17 20:56:13 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:13 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:13 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19:52:05.6524 0.697578292rad' successfully parsed 2026-08-17 20:56:13 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:13 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:13 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:12.519278 End time: 2026-08-17 20:56:12.952843 2026-08-17 20:56:13 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:13 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:13 INFO tclean::::casa ########################################## 2026-08-17 20:56:13 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:13 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:13 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:13 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:13 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:13 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:13 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:13 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:13 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:13 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:13 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:13 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:13 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:13 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:13 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:13 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.015573 2026-08-17 20:56:13 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:13 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:14 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:14 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:14 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:15 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:15 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:15 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:15 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:15 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:15 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:12.978285 End time: 2026-08-17 20:56:14.716797 2026-08-17 20:56:15 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:15 INFO tclean::::casa ########################################## 2026-08-17 20:56:15 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:15 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:15 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:15 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:15 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:15 2026****** 2026-08-17 20:56:15 INFO ImageFitter::fit+ 2026-08-17 20:56:15 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:15 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:15 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:15 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:15 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:15 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:15 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:15 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:15 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:15 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:15 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:15 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126487 Jy 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000008 +/- 0.000777 arcsec 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- ra: 128.000009 +/- 0.000127 pixels 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- dec: 127.999992 +/- 0.000097 pixels 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:15 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:15 INFO imstat::::casa ########################################## 2026-08-17 20:56:15 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:15 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:15 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:15 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:15 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:15 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:15 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:15 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:15 INFO imstat:::: Values --- 2026-08-17 20:56:15 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:15 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:15 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- minimum value [min]: -7.7781e-05 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:15 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:15 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:15 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:15 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:15 INFO imstat:::: Statistics --- 2026-08-17 20:56:15 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- Median of the pixel values [median]: -1.86714e-05 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73593e-05 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- IQR [quartile]: 3.56161e-05 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- First quartile [q1]: -3.45125e-05 Jy/beam 2026-08-17 20:56:15 INFO imstat:::: -- Third quartile [q3]: 1.10364e-06 Jy/beam 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:15 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778104e-05 4.999996e+00 2026-08-17 20:56:15 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:14.771477 End time: 2026-08-17 20:56:14.802711 2026-08-17 20:56:15 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:15 INFO imstat::::casa ########################################## 2026-08-17 20:56:15 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:15 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:15 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 298.023551625deg 39d58m05.8512' ) 2026-08-17 20:56:15 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:15 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:15 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:15 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:15 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:15 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:15 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:15 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:15 INFO MSTransformManager::open Select data 2026-08-17 20:56:15 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:15 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:15 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 298.023551625deg 39d58m05.8512' successfully parsed 2026-08-17 20:56:15 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:15 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:15 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:14.815548 End time: 2026-08-17 20:56:15.268271 2026-08-17 20:56:15 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:15 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:15 INFO tclean::::casa ########################################## 2026-08-17 20:56:15 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:15 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:15 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:15 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:15 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:15 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:15 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:15 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:15 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:15 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:15 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:15 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:15 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:15 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:16 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:16 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.012702 2026-08-17 20:56:16 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:16 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:16 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:16 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:16 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:17 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:17 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:17 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:17 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:17 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:17 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:15.293250 End time: 2026-08-17 20:56:16.745645 2026-08-17 20:56:17 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:17 INFO tclean::::casa ########################################## 2026-08-17 20:56:17 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:17 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:17 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:17 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:17 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:17 2026****** 2026-08-17 20:56:17 INFO ImageFitter::fit+ 2026-08-17 20:56:17 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:17 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:17 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:17 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:17 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:17 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:17 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:17 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:17 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:17 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:17 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:17 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:17 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:17 INFO imstat::::casa ########################################## 2026-08-17 20:56:17 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:17 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:17 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:17 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:17 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:17 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:17 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:17 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:17 INFO imstat:::: Values --- 2026-08-17 20:56:17 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:17 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:17 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- minimum value [min]: -7.77826e-05 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:17 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:17 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:17 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:17 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:17 INFO imstat:::: Statistics --- 2026-08-17 20:56:17 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- Median of the pixel values [median]: -1.86649e-05 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73604e-05 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- IQR [quartile]: 3.56026e-05 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- First quartile [q1]: -3.45067e-05 Jy/beam 2026-08-17 20:56:17 INFO imstat:::: -- Third quartile [q3]: 1.09593e-06 Jy/beam 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:17 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778264e-05 4.999996e+00 2026-08-17 20:56:17 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:16.793065 End time: 2026-08-17 20:56:16.813248 2026-08-17 20:56:17 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:17 INFO imstat::::casa ########################################## 2026-08-17 20:56:17 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:17 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:17 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 298.023551625deg 02:39:52.3901' ) 2026-08-17 20:56:17 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:17 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:17 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:17 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:17 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:17 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:17 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:17 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:17 INFO MSTransformManager::open Select data 2026-08-17 20:56:17 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:17 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:39:52.3901" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:56:17 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 298.023551625deg 02:39:52.3901' successfully parsed 2026-08-17 20:56:17 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:17 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:17 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:16.826312 End time: 2026-08-17 20:56:17.251808 2026-08-17 20:56:17 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:17 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:17 INFO tclean::::casa ########################################## 2026-08-17 20:56:17 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:17 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:17 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:17 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:17 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:17 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:17 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:17 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:17 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:17 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:17 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:17 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:17 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:17 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:18 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:18 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011227 2026-08-17 20:56:18 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:18 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:18 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:18 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:18 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:56:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:19 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:19 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:19 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:19 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:19 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:19 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:17.277440 End time: 2026-08-17 20:56:18.719036 2026-08-17 20:56:19 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:19 INFO tclean::::casa ########################################## 2026-08-17 20:56:19 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:19 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:19 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:19 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:19 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:19 2026****** 2026-08-17 20:56:19 INFO ImageFitter::fit+ 2026-08-17 20:56:19 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:19 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:19 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:19 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:19 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:19 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:19 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:19 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:19 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:19 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:19 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:19 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.00011688 Jy 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126496 Jy 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000034 +/- 0.000777 arcsec 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- dec: 127.999963 +/- 0.000097 pixels 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:19 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:19 INFO imstat::::casa ########################################## 2026-08-17 20:56:19 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:19 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:19 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:19 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:19 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:19 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:19 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:19 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.865, I, 999981612.9Hz to 19:52:21.081, +40.22.53.889, I, 999981612.9Hz) 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-08-17 20:56:19 INFO imstat:::: Values --- 2026-08-17 20:56:19 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:19 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:19 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- minimum value [min]: -7.78225e-05 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:19 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:19 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:19 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:19 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:19 INFO imstat:::: Statistics --- 2026-08-17 20:56:19 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- Median of the pixel values [median]: -1.86781e-05 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73751e-05 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- IQR [quartile]: 3.56365e-05 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- First quartile [q1]: -3.45278e-05 Jy/beam 2026-08-17 20:56:19 INFO imstat:::: -- Third quartile [q3]: 1.10869e-06 Jy/beam 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:19 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.782251e-05 4.999996e+00 2026-08-17 20:56:19 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:18.792901 End time: 2026-08-17 20:56:18.821885 2026-08-17 20:56:19 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:19 INFO imstat::::casa ########################################## 2026-08-17 20:56:19 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:19 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:19 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 298.023551625deg 39.968292000deg' ) 2026-08-17 20:56:19 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:19 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:19 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:19 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:19 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:19 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:19 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:19 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:19 INFO MSTransformManager::open Select data 2026-08-17 20:56:19 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:19 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:19 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 298.023551625deg 39.968292000deg' successfully parsed 2026-08-17 20:56:19 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:19 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:19 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:18.838461 End time: 2026-08-17 20:56:19.348293 2026-08-17 20:56:19 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:19 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:19 INFO tclean::::casa ########################################## 2026-08-17 20:56:19 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:19 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:19 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:19 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:19 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:20 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:20 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:20 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:20 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:20 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:20 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:20 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:20 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:20 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:20 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:20 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011341 2026-08-17 20:56:20 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:20 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:20 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:20 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:20 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:21 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:21 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:21 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:21 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:21 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:21 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:21 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:21 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:19.393907 End time: 2026-08-17 20:56:20.879587 2026-08-17 20:56:21 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:21 INFO tclean::::casa ########################################## 2026-08-17 20:56:21 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:21 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:21 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:21 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:21 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:21 2026****** 2026-08-17 20:56:21 INFO ImageFitter::fit+ 2026-08-17 20:56:21 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:21 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:21 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:21 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:21 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:21 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:21 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:21 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:21 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:21 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:21 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:21 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:21 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:21 INFO imstat::::casa ########################################## 2026-08-17 20:56:21 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:21 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:21 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:21 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:21 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:21 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:21 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:21 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:21 INFO imstat:::: Values --- 2026-08-17 20:56:21 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:21 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:21 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- minimum value [min]: -7.77826e-05 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:21 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:21 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:21 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:21 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:21 INFO imstat:::: Statistics --- 2026-08-17 20:56:21 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- Median of the pixel values [median]: -1.86649e-05 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73604e-05 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- IQR [quartile]: 3.56026e-05 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- First quartile [q1]: -3.45067e-05 Jy/beam 2026-08-17 20:56:21 INFO imstat:::: -- Third quartile [q3]: 1.09593e-06 Jy/beam 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:21 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778264e-05 4.999996e+00 2026-08-17 20:56:21 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:20.934599 End time: 2026-08-17 20:56:20.956554 2026-08-17 20:56:21 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:21 INFO imstat::::casa ########################################## 2026-08-17 20:56:21 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:21 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:21 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 298.023551625deg 0.697578292rad' ) 2026-08-17 20:56:21 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:21 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:21 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:21 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:21 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:21 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:21 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:21 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:21 INFO MSTransformManager::open Select data 2026-08-17 20:56:21 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:21 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:21 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 298.023551625deg 0.697578292rad' successfully parsed 2026-08-17 20:56:21 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:21 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:21 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:20.968981 End time: 2026-08-17 20:56:21.449439 2026-08-17 20:56:21 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:21 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:21 INFO tclean::::casa ########################################## 2026-08-17 20:56:21 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:21 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:21 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:22 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:22 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:22 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:22 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:22 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:22 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:22 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:22 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:22 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:22 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:22 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:22 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:22 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011658 2026-08-17 20:56:22 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:22 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:22 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:22 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:22 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:23 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:23 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:56:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:23 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:23 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:23 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:23 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:23 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:23 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:21.491835 End time: 2026-08-17 20:56:23.182212 2026-08-17 20:56:23 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:23 INFO tclean::::casa ########################################## 2026-08-17 20:56:23 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:23 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:23 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:23 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:23 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:23 2026****** 2026-08-17 20:56:23 INFO ImageFitter::fit+ 2026-08-17 20:56:23 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:23 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:23 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:23 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:23 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:23 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:23 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:23 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:23 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:23 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:23 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:23 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000008 +/- 0.000777 arcsec 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- dec: 127.999992 +/- 0.000097 pixels 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:23 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:23 INFO imstat::::casa ########################################## 2026-08-17 20:56:23 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:23 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:23 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:23 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:23 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:23 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:23 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:23 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:23 INFO imstat:::: Values --- 2026-08-17 20:56:23 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:23 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:23 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- minimum value [min]: -7.7789e-05 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:23 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:23 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:23 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:23 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:23 INFO imstat:::: Statistics --- 2026-08-17 20:56:23 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- Median of the pixel values [median]: -1.86647e-05 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73649e-05 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- IQR [quartile]: 3.56182e-05 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- First quartile [q1]: -3.45079e-05 Jy/beam 2026-08-17 20:56:23 INFO imstat:::: -- Third quartile [q3]: 1.11022e-06 Jy/beam 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:23 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778897e-05 4.999996e+00 2026-08-17 20:56:23 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:23.245222 End time: 2026-08-17 20:56:23.270114 2026-08-17 20:56:23 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:23 INFO imstat::::casa ########################################## 2026-08-17 20:56:23 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:23 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:23 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 5.201492224rad 39d58m05.8512' ) 2026-08-17 20:56:23 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:23 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:23 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:23 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:23 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:23 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:23 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:23 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:23 INFO MSTransformManager::open Select data 2026-08-17 20:56:23 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:23 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:23 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 5.201492224rad 39d58m05.8512' successfully parsed 2026-08-17 20:56:23 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:24 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:24 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:23.284905 End time: 2026-08-17 20:56:23.714259 2026-08-17 20:56:24 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:24 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:24 INFO tclean::::casa ########################################## 2026-08-17 20:56:24 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:24 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:24 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:24 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:24 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:24 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:24 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:24 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:24 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:24 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:24 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:24 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:24 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:24 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:24 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:24 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.02168 2026-08-17 20:56:24 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:24 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:24 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:24 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:24 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:25 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:25 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:25 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:25 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:25 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:25 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:23.739399 End time: 2026-08-17 20:56:25.368129 2026-08-17 20:56:25 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:25 INFO tclean::::casa ########################################## 2026-08-17 20:56:25 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:25 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:25 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:25 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:25 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:25 2026****** 2026-08-17 20:56:25 INFO ImageFitter::fit+ 2026-08-17 20:56:25 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:25 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:25 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:25 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:25 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:25 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:25 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:25 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:25 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:25 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:25 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:25 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116879 Jy 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126495 Jy 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999999 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- ra: 127.999990 +/- 0.000127 pixels 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:25 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:25 INFO imstat::::casa ########################################## 2026-08-17 20:56:25 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:25 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:25 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:25 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:25 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:25 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:25 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:25 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:25 INFO imstat:::: Values --- 2026-08-17 20:56:25 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:25 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:25 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- minimum value [min]: -7.77853e-05 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:25 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:25 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:25 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:25 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:25 INFO imstat:::: Statistics --- 2026-08-17 20:56:25 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- Median of the pixel values [median]: -1.86679e-05 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73586e-05 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- IQR [quartile]: 3.56112e-05 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- First quartile [q1]: -3.45109e-05 Jy/beam 2026-08-17 20:56:25 INFO imstat:::: -- Third quartile [q3]: 1.10039e-06 Jy/beam 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:25 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778534e-05 4.999996e+00 2026-08-17 20:56:25 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:25.432779 End time: 2026-08-17 20:56:25.466146 2026-08-17 20:56:25 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:25 INFO imstat::::casa ########################################## 2026-08-17 20:56:25 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:25 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:25 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 5.201492224rad 02:39:52.3901' ) 2026-08-17 20:56:25 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:25 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:25 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:25 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:25 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:25 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:25 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:26 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:26 INFO MSTransformManager::open Select data 2026-08-17 20:56:26 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:26 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:39:52.3901" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-08-17 20:56:26 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 5.201492224rad 02:39:52.3901' successfully parsed 2026-08-17 20:56:26 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:26 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:26 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:25.479291 End time: 2026-08-17 20:56:25.923350 2026-08-17 20:56:26 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:26 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:26 INFO tclean::::casa ########################################## 2026-08-17 20:56:26 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:26 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:26 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:26 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:26 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:26 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:26 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:26 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:26 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:26 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:26 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:26 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:26 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:26 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:26 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:26 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010738 2026-08-17 20:56:26 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:26 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:26 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:26 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:26 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-08-17 20:56:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:27 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:27 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:27 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:27 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:27 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:27 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:25.949726 End time: 2026-08-17 20:56:27.453455 2026-08-17 20:56:27 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:27 INFO tclean::::casa ########################################## 2026-08-17 20:56:27 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:27 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:27 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:27 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:27 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:27 2026****** 2026-08-17 20:56:27 INFO ImageFitter::fit+ 2026-08-17 20:56:27 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:27 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:27 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:27 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:27 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:27 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:27 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:27 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:27 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:27 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:27 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:27 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116885 Jy 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126501 Jy 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999999 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000034 +/- 0.000777 arcsec 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- ra: 127.999990 +/- 0.000127 pixels 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- dec: 127.999963 +/- 0.000097 pixels 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:27 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:27 INFO imstat::::casa ########################################## 2026-08-17 20:56:27 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:27 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:28 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:28 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:28 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:28 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:28 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:28 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.865, I, 999981612.9Hz to 19:52:21.081, +40.22.53.889, I, 999981612.9Hz) 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-08-17 20:56:28 INFO imstat:::: Values --- 2026-08-17 20:56:28 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:28 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:28 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- minimum value [min]: -7.78268e-05 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:28 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:28 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:28 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:28 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:28 INFO imstat:::: Statistics --- 2026-08-17 20:56:28 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- Median of the pixel values [median]: -1.8675e-05 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73782e-05 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- IQR [quartile]: 3.56598e-05 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- First quartile [q1]: -3.45364e-05 Jy/beam 2026-08-17 20:56:28 INFO imstat:::: -- Third quartile [q3]: 1.12335e-06 Jy/beam 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:28 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085647e+02 9.285960e-03 1.524530e-01 1.521711e-01 -7.782676e-05 4.999996e+00 2026-08-17 20:56:28 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:27.497833 End time: 2026-08-17 20:56:27.518476 2026-08-17 20:56:28 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:28 INFO imstat::::casa ########################################## 2026-08-17 20:56:28 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:28 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:28 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 5.201492224rad 39.968292000deg' ) 2026-08-17 20:56:28 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:28 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:28 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:28 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:28 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:28 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:28 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:28 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:28 INFO MSTransformManager::open Select data 2026-08-17 20:56:28 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:28 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:28 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 5.201492224rad 39.968292000deg' successfully parsed 2026-08-17 20:56:28 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:28 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:28 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:27.531339 End time: 2026-08-17 20:56:27.994217 2026-08-17 20:56:28 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:28 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:28 INFO tclean::::casa ########################################## 2026-08-17 20:56:28 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:28 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:28 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:28 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:28 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:28 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:28 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:28 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:28 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:28 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:28 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:28 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:28 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:28 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01954 2026-08-17 20:56:28 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:28 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:28 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:29 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:29 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:29 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:29 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:29 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:29 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:30 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:28.024990 End time: 2026-08-17 20:56:29.523653 2026-08-17 20:56:30 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:30 INFO tclean::::casa ########################################## 2026-08-17 20:56:30 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:30 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:30 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:30 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:30 2026****** 2026-08-17 20:56:30 INFO ImageFitter::fit+ 2026-08-17 20:56:30 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:30 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:30 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:30 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:30 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:30 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:30 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:30 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:30 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:30 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:30 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116879 Jy 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126495 Jy 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999999 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- ra: 127.999990 +/- 0.000127 pixels 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:30 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:30 INFO imstat::::casa ########################################## 2026-08-17 20:56:30 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:30 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:30 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:30 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:30 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:30 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:30 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:30 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:30 INFO imstat:::: Values --- 2026-08-17 20:56:30 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:30 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:30 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- minimum value [min]: -7.77853e-05 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:30 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:30 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:30 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:30 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:30 INFO imstat:::: Statistics --- 2026-08-17 20:56:30 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- Median of the pixel values [median]: -1.86679e-05 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73586e-05 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- IQR [quartile]: 3.56112e-05 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- First quartile [q1]: -3.45109e-05 Jy/beam 2026-08-17 20:56:30 INFO imstat:::: -- Third quartile [q3]: 1.10039e-06 Jy/beam 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:30 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.778534e-05 4.999996e+00 2026-08-17 20:56:30 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:29.590195 End time: 2026-08-17 20:56:29.616328 2026-08-17 20:56:30 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:30 INFO imstat::::casa ########################################## 2026-08-17 20:56:30 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:30 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-08-17 20:56:30 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 5.201492224rad 0.697578292rad' ) 2026-08-17 20:56:30 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-08-17 20:56:30 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-08-17 20:56:30 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-08-17 20:56:30 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-08-17 20:56:30 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-08-17 20:56:30 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-08-17 20:56:30 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-08-17 20:56:30 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-08-17 20:56:30 INFO MSTransformManager::open Select data 2026-08-17 20:56:30 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-08-17 20:56:30 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-08-17 20:56:30 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 5.201492224rad 0.697578292rad' successfully parsed 2026-08-17 20:56:30 INFO phaseshift::::casa Shift phase center 2026-08-17 20:56:30 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-08-17 20:56:30 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-08-17 20:56:29.631382 End time: 2026-08-17 20:56:30.064283 2026-08-17 20:56:30 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-08-17 20:56:30 INFO phaseshift::::casa ########################################## 2026-08-17 20:56:30 INFO tclean::::casa ########################################## 2026-08-17 20:56:30 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-08-17 20:56:30 INFO tclean::::casa tclean( vis='sim_data_pshift.ms', selectdata=True, field='', spw='', timerange='', uvrange='', antenna='', scan='', observation='', intent='', datacolumn='data', imagename='im_post_phaseshift', imsize=256, cell='8.0arcsec', phasecenter='', stokes='I', projection='SIN', startmodel='', specmode='mfs', reffreq='', nchan=-1, start='', width='', outframe='LSRK', veltype='radio', restfreq=[], interpolation='linear', perchanweightdensity=True, gridder='standard', facets=1, psfphasecenter='', wprojplanes=1, vptable='', mosweight=True, aterm=True, psterm=False, wbawp=True, conjbeams=False, cfcache='', usepointing=False, computepastep=360.0, rotatepastep=360.0, pointingoffsetsigdev=[], pblimit=-0.1, normtype='flatnoise', deconvolver='hogbom', scales=[], nterms=2, smallscalebias=0.0, fusedthreshold=0.0, largestscale=-1, restoration=True, restoringbeam=[], pbcor=False, outlierfile='', weighting='natural', robust=0.5, noise='1.0Jy', npixels=0, uvtaper=[], niter=20, gain=0.3, threshold=0.0, nsigma=0.0, cycleniter=-1, cyclefactor=1.0, minpsffraction=0.05, maxpsffraction=0.8, interactive=False, nmajor=-1, fullsummary=False, usemask='user', mask='', pbmask=0.0, sidelobethreshold=3.0, noisethreshold=5.0, lownoisethreshold=1.5, negativethreshold=0.0, smoothfactor=1.0, minbeamfrac=0.3, cutthreshold=0.01, growiterations=75, dogrowprune=True, minpercentchange=-1.0, verbose=False, fastnoise=True, restart=True, savemodel='none', calcres=True, calcpsf=True, psfcutoff=0.35, parallel=False ) 2026-08-17 20:56:30 INFO tclean::::casa Verifying Input Parameters 2026-08-17 20:56:30 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-08-17 20:56:30 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-08-17 20:56:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-08-17 20:56:30 INFO SynthesisImagerVi2::defineImage Impars: start 2026-08-17 20:56:30 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-08-17 20:56:30 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-08-17 20:56:30 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.75 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-08-17 20:56:30 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-08-17 20:56:30 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-08-17 20:56:30 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-08-17 20:56:30 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-08-17 20:56:30 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010781 2026-08-17 20:56:30 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:30 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-08-17 20:56:30 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-08-17 20:56:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-08-17 20:56:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-08-17 20:56:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-08-17 20:56:31 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-08-17 20:56:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-08-17 20:56:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-08-17 20:56:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-08-17 20:56:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-08-17 20:56:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-08-17 20:56:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-08-17 20:56:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-08-17 20:56:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-08-17 20:56:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-08-17 20:56:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-08-17 20:56:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-08-17 20:56:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-08-17 20:56:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-08-17 20:56:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-08-17 20:56:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-08-17 20:56:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-08-17 20:56:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-08-17 20:56:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-08-17 20:56:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-08-17 20:56:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-08-17 20:56:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-08-17 20:56:31 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-08-17 20:56:31 INFO tclean::::casa getSummary call: fullsummary=False 2026-08-17 20:56:31 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-08-17 20:56:31 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-08-17 20:56:31 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.pb', 'im_post_phaseshift.image', 'im_post_phaseshift.psf', 'im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.residual', 'im_post_phaseshift.sumwt'] 2026-08-17 20:56:32 INFO tclean::::casa Task tclean complete. Start time: 2026-08-17 20:56:30.104466 End time: 2026-08-17 20:56:31.569723 2026-08-17 20:56:32 INFO tclean::::casa ##### End Task: tclean ##### 2026-08-17 20:56:32 INFO tclean::::casa ########################################## 2026-08-17 20:56:32 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-08-17 20:56:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:32 INFO ImageRegion::fromRecord+ [118, 118, 0, 0] to [138, 138, 0, 0] (19:53:56.970, +40.04.39.987, I, 999981612.9Hz to 19:53:43.025, +40.07.19.987, I, 999981612.9Hz) 2026-08-17 20:56:32 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-08-17 20:56:32 INFO ImageFitter::fit ****** Fit performed at Mon Aug 17 20:56:32 2026****** 2026-08-17 20:56:32 INFO ImageFitter::fit+ 2026-08-17 20:56:32 INFO ImageFitter::fit+ Input parameters --- 2026-08-17 20:56:32 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-08-17 20:56:32 INFO ImageFitter::fit+ --- region: 2026-08-17 20:56:32 INFO ImageFitter::fit+ --- channel: 0 2026-08-17 20:56:32 INFO ImageFitter::fit+ --- stokes: I 2026-08-17 20:56:32 INFO ImageFitter::fit+ --- mask: 2026-08-17 20:56:32 INFO ImageFitter::fit+ --- include pixel range: [] 2026-08-17 20:56:32 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-08-17 20:56:32 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-08-17 20:56:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:32 INFO ImageRegion::fromRecord+ [5, 5] to [15, 15] (19:53:53.486, +40.05.19.997 to 19:53:46.513, +40.06.39.997) 2026-08-17 20:56:32 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Position --- 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999999 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000008 +/- 0.000777 arcsec 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- ra: 127.999990 +/- 0.000127 pixels 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- dec: 127.999992 +/- 0.000097 pixels 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Flux --- 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-08-17 20:56:32 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-08-17 20:56:32 INFO imstat::::casa ########################################## 2026-08-17 20:56:32 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-08-17 20:56:32 INFO imstat::::casa imstat( imagename='im_post_phaseshift.image', axes=[], region='', box='', chans='', stokes='', listit=True, verbose=True, mask='', stretch=False, logfile='', append=True, algorithm='classic', fence=-1.0, center='mean', lside=True, zscore=-1.0, maxiter=-1, clmethod='auto', niter=3 ) 2026-08-17 20:56:32 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-08-17 20:56:32 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-08-17 20:56:32 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-08-17 20:56:32 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-08-17 20:56:32 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-08-17 20:56:32 INFO imstat::ImageRegion::fromRecord+ [0, 0, 0, 0] to [255, 255, 0, 0] (19:55:18.876, +39.48.53.864, I, 999981612.9Hz to 19:52:21.081, +40.22.53.888, I, 999981612.9Hz) 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-08-17 20:56:32 INFO imstat:::: Values --- 2026-08-17 20:56:32 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-08-17 20:56:32 INFO imstat:::: -- number of points [npts]: 65536 2026-08-17 20:56:32 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- minimum value [min]: -7.77956e-05 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-08-17 20:56:32 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-08-17 20:56:32 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-08-17 20:56:32 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-08-17 20:56:32 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-08-17 20:56:32 INFO imstat:::: Statistics --- 2026-08-17 20:56:32 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- Median of the pixel values [median]: -1.86648e-05 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73536e-05 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- IQR [quartile]: 3.5639e-05 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- First quartile [q1]: -3.45152e-05 Jy/beam 2026-08-17 20:56:32 INFO imstat:::: -- Third quartile [q3]: 1.12373e-06 Jy/beam 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-08-17 20:56:32 INFO imstat::ImageStatsCalculator::statistics 6.553600e+04 6.085646e+02 9.285959e-03 1.524530e-01 1.521711e-01 -7.779562e-05 4.999996e+00 2026-08-17 20:56:32 INFO imstat::::casa Task imstat complete. Start time: 2026-08-17 20:56:31.631130 End time: 2026-08-17 20:56:31.653737 2026-08-17 20:56:32 INFO imstat::::casa ##### End Task: imstat ##### 2026-08-17 20:56:32 INFO imstat::::casa ########################################## . ---------------------------------------------------------------------- Ran 27 tests in 372.493s OK Generating XML reports...