2026-03-19 09:13:41 INFO ::casa Using user configuration file /home/casatest/.casa/config.py 2026-03-19 09:13:41 INFO ::casa loaded config file : /wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casaconfig/config.py 2026-03-19 09:13:41 INFO ::casa loaded config file : /home/casatest/.casa/config.py 2026-03-19 09:13:41 INFO ::casa 2026-03-19 09:13:41 INFO ::casa config values 2026-03-19 09:13:41 INFO ::casa agg = False 2026-03-19 09:13:41 INFO ::casa cachedir = '/home/casatest/.casa' 2026-03-19 09:13:41 INFO ::casa casaconfig_verbose = 1 2026-03-19 09:13:41 INFO ::casa colors = 'Neutral' 2026-03-19 09:13:41 INFO ::casa data_auto_update = False 2026-03-19 09:13:41 INFO ::casa datapath = ['/opt/casa/data/master', '/opt/casa/data/casatestdata'] 2026-03-19 09:13:41 INFO ::casa iplog = False 2026-03-19 09:13:41 INFO ::casa iplogfile = '/home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/ipython-20260319-091338.log' 2026-03-19 09:13:41 INFO ::casa log2term = True 2026-03-19 09:13:41 INFO ::casa logfile = '/home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/casa-20260319-091338.log' 2026-03-19 09:13:41 INFO ::casa measures_auto_update = False 2026-03-19 09:13:41 INFO ::casa measurespath = '/opt/casa/data/master' 2026-03-19 09:13:41 INFO ::casa nogui = False 2026-03-19 09:13:41 INFO ::casa nologfile = False 2026-03-19 09:13:41 INFO ::casa nologger = True 2026-03-19 09:13:41 INFO ::casa pipeline = False 2026-03-19 09:13:41 INFO ::casa startupfile = '/home/casatest/.casa/startup.py' 2026-03-19 09:13:41 INFO ::casa user_site = False 2026-03-19 09:13:41 INFO ::casa 2026-03-19 09:13:41 INFO ::casa casarundata version is unknown, this is probably a legacy version not installed by casaconfig 2026-03-19 09:13:41 INFO ::casa measures version is unknown, this is probably a legacy version not installed by casaconfig 2026-03-19 09:13:41 INFO ::casa 2026-03-19 09:13:41 INFO ::casa Checking Measures tables in data repository sub-directory /opt/casa/data/master/geodetic 2026-03-19 09:13:41 INFO ::casa IERSeop2000 (version date, last date in table (UTC)): 2026/02/23/15:15, 2025/12/31/00:00:00 2026-03-19 09:13:41 INFO ::casa IERSeop97 (version date, last date in table (UTC)): 2026/02/23/15:15, 2025/12/31/00:00:00 2026-03-19 09:13:41 INFO ::casa IERSpredict (version date, last date in table (UTC)): 2026/03/18/15:15, 2026/06/16/00:00:00 2026-03-19 09:13:41 INFO ::casa TAI_UTC (version date, last date in table (UTC)): 2026/02/23/15:15, 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 6.7.1.13 -- Common Astronomy Software Applications [6.7.1.13] 2026-03-19 09:13:42 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:42 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:42 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'} ) 2026-03-19 09:13:42 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:13:42 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:42 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-03-19 09:13:42 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:42 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:42 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:42 INFO MSTransformManager::open Select data 2026-03-19 09:13:42 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:42 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-03-19 09:13:42 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 19h53m50 40d06m00' successfully parsed for field 0 2026-03-19 09:13:42 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 22h01m02 40d04m03' successfully parsed for field 2 2026-03-19 09:13:42 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:43 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:43 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:41.826217 End time: 2026-03-19 09:13:42.778862 2026-03-19 09:13:43 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:43 INFO phaseshift::::casa ########################################## .2026-03-19 09:13:43 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:43 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:43 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'} ) 2026-03-19 09:13:43 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:13:43 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:43 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-03-19 09:13:43 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:43 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:43 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:43 INFO MSTransformManager::open Select data 2026-03-19 09:13:43 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:43 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-03-19 09:13:43 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed for field 0 2026-03-19 09:13:43 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: Wrong field ID given: 3. This MeasurementSet has field IDs between 0 and 2 2026-03-19 09:13:43 INFO phaseshift::::casa Traceback (most recent call last): 2026-03-19 09:13:43 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-03-19 09:13:43 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'] ) 2026-03-19 09:13:43 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:43 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 99, in phaseshift 2026-03-19 09:13:43 INFO phaseshift::::casa+ mtlocal.open() 2026-03-19 09:13:43 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/mstransformer.py", line 36, in open 2026-03-19 09:13:43 INFO phaseshift::::casa+ return self._swigobj.open() 2026-03-19 09:13:43 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:43 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/mstransformer.py", line 176, in open 2026-03-19 09:13:43 INFO phaseshift::::casa+ return _mstransformer.mstransformer_open(self) 2026-03-19 09:13:43 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:43 INFO phaseshift::::casa+ RuntimeError: Wrong field ID given: 3. This MeasurementSet has field IDs between 0 and 2 2026-03-19 09:13:43 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:42.860893 End time: 2026-03-19 09:13:43.319738 2026-03-19 09:13:43 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:43 INFO phaseshift::::casa ########################################## .2026-03-19 09:13:43 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:43 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:43 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'} ) 2026-03-19 09:13:43 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:13:43 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:43 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-03-19 09:13:43 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:43 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:43 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:43 INFO MSTransformManager::open Select data 2026-03-19 09:13:43 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:44 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-03-19 09:13:44 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed for field 0 2026-03-19 09:13:44 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:44 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:44 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:43.423498 End time: 2026-03-19 09:13:44.314207 2026-03-19 09:13:44 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:44 INFO phaseshift::::casa ########################################## .2026-03-19 09:13:44 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:44 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:44 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'} ) 2026-03-19 09:13:44 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:13:44 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:44 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-03-19 09:13:44 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:44 INFO MSTransformManager::parseDataSelParams field selection is 0,2 2026-03-19 09:13:44 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:44 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:44 INFO MSTransformManager::open Select data 2026-03-19 09:13:44 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:44 INFO MSTransformDataHandler::makeSelection 11536 out of 15344 rows are going to be considered due to the selection criteria. 2026-03-19 09:13:45 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-03-19 09:13:45 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed for field 1 2026-03-19 09:13:45 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 22h01m02 40d04m03' successfully parsed for field 2 2026-03-19 09:13:45 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:45 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:45 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:44.410863 End time: 2026-03-19 09:13:45.156001 2026-03-19 09:13:45 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:45 INFO phaseshift::::casa ########################################## .2026-03-19 09:13:45 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:45 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:45 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'} ) 2026-03-19 09:13:45 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:13:45 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:45 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-03-19 09:13:45 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:45 INFO MSTransformManager::parseDataSelParams field selection is 0,2 2026-03-19 09:13:45 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:45 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:45 INFO MSTransformManager::open Select data 2026-03-19 09:13:45 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:45 INFO MSTransformDataHandler::makeSelection 11536 out of 15344 rows are going to be considered due to the selection criteria. 2026-03-19 09:13:46 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a dictionary of field->center.Using following phase centers: 2026-03-19 09:13:46 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m50 40d06m00' successfully parsed for field 0 2026-03-19 09:13:46 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 22h01m02 40d04m03' successfully parsed for field 2 2026-03-19 09:13:46 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:46 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:46 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:45.258346 End time: 2026-03-19 09:13:46.104548 2026-03-19 09:13:46 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:46 INFO phaseshift::::casa ########################################## .2026-03-19 09:13:46 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:46 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:46 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' ) 2026-03-19 09:13:46 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:13:46 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:46 INFO MSTransformManager::parseMsSpecParams Output file name is test_vis_multi_field_phasecenter_dict.ms 2026-03-19 09:13:46 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:46 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:46 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:46 INFO MSTransformManager::open Select data 2026-03-19 09:13:46 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:47 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:13:47 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-03-19 09:13:47 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:47 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:47 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:46.189980 End time: 2026-03-19 09:13:47.126766 2026-03-19 09:13:47 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:47 INFO phaseshift::::casa ########################################## ..2026-03-19 09:13:48 INFO MeasIERS::fillMeas(MeasIERS::Files, Double) Requested JD 0 is outside the range of the IERS (Earth axis data) table. 2026-03-19 09:13:48 INFO MeasIERS::fillMeas(MeasIERS::Files, Double) + Calculations will proceed with less precision ..2026-03-19 09:13:48 SEVERE Error in QuantumHolder::fromString with input string "xxh53m50": Illegal input units or format 2026-03-19 09:13:48 SEVERE + in converting quantity from string 2026-03-19 09:13:48 SEVERE Exception Reported: Empty QuantumHolder argument for asQuantumDouble 2026-03-19 09:13:48 SEVERE Exception Reports: Empty QuantumHolder argument for asQuantumDouble 2026-03-19 09:13:48 SEVERE phaseshift::::casa *** Error measures.direction() failed for phasecenter string: BOGUS xxh53m50 40d06m00 when interpreting parameter 'phasecenter': ...2026-03-19 09:13:51 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:51 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:51 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' ) 2026-03-19 09:13:51 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:13:51 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:51 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:13:51 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:51 INFO MSTransformManager::parseDataSelParams array selection is 1 2026-03-19 09:13:51 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:51 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:51 INFO MSTransformManager::open Select data 2026-03-19 09:13:51 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:51 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: MSSelectionNullSelection : The selected table has zero rows. 2026-03-19 09:13:51 INFO phaseshift::::casa Traceback (most recent call last): 2026-03-19 09:13:51 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-03-19 09:13:51 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'] ) 2026-03-19 09:13:51 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:51 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 99, in phaseshift 2026-03-19 09:13:51 INFO phaseshift::::casa+ mtlocal.open() 2026-03-19 09:13:51 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/mstransformer.py", line 36, in open 2026-03-19 09:13:51 INFO phaseshift::::casa+ return self._swigobj.open() 2026-03-19 09:13:51 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:51 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/mstransformer.py", line 176, in open 2026-03-19 09:13:51 INFO phaseshift::::casa+ return _mstransformer.mstransformer_open(self) 2026-03-19 09:13:51 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:51 INFO phaseshift::::casa+ RuntimeError: MSSelectionNullSelection : The selected table has zero rows. 2026-03-19 09:13:51 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:51.410997 End time: 2026-03-19 09:13:51.461605 2026-03-19 09:13:51 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:51 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:51 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:51 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:51 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' ) 2026-03-19 09:13:51 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:13:51 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:51 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:13:51 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:51 INFO MSTransformManager::parseDataSelParams array selection is 0 2026-03-19 09:13:51 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:51 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:51 INFO MSTransformManager::open Select data 2026-03-19 09:13:51 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:52 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-03-19 09:13:52 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-03-19 09:13:53 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:13:53 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -06d23m35' successfully parsed 2026-03-19 09:13:53 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:53 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:53 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:51.462840 End time: 2026-03-19 09:13:52.926041 2026-03-19 09:13:53 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:53 INFO phaseshift::::casa ########################################## .2026-03-19 09:13:54 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:54 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:54 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' ) 2026-03-19 09:13:54 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:13:54 INFO MSTransformManager::parseMsSpecParams Data column is MODEL 2026-03-19 09:13:54 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:13:54 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:54 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:54 WARN MSTransformManager::checkDataColumnsToFill MODEL_DATA column requested but not available in input MS 2026-03-19 09:13:54 INFO MSTransformManager::open Select data 2026-03-19 09:13:54 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:54 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). 2026-03-19 09:13:54 INFO phaseshift::::casa Traceback (most recent call last): 2026-03-19 09:13:54 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-03-19 09:13:54 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'] ) 2026-03-19 09:13:54 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:54 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 99, in phaseshift 2026-03-19 09:13:54 INFO phaseshift::::casa+ mtlocal.open() 2026-03-19 09:13:54 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/mstransformer.py", line 36, in open 2026-03-19 09:13:54 INFO phaseshift::::casa+ return self._swigobj.open() 2026-03-19 09:13:54 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:54 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/mstransformer.py", line 176, in open 2026-03-19 09:13:54 INFO phaseshift::::casa+ return _mstransformer.mstransformer_open(self) 2026-03-19 09:13:54 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:13:54 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). 2026-03-19 09:13:54 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:54.058199 End time: 2026-03-19 09:13:54.092937 2026-03-19 09:13:54 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:54 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:54 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:54 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:54 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' ) 2026-03-19 09:13:54 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:13:54 INFO MSTransformManager::parseMsSpecParams Data column is DATA 2026-03-19 09:13:54 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:13:54 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:54 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:54 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:54 INFO MSTransformManager::open Select data 2026-03-19 09:13:54 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:55 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-03-19 09:13:55 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-03-19 09:13:55 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:13:55 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -06d23m35' successfully parsed 2026-03-19 09:13:55 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:55 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:55 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:54.094092 End time: 2026-03-19 09:13:55.312814 2026-03-19 09:13:55 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:55 INFO phaseshift::::casa ########################################## .2026-03-19 09:13:56 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:56 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:56 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' ) 2026-03-19 09:13:56 INFO MSTransformManager::parseMsSpecParams Input file name is Itziar_copy.ms 2026-03-19 09:13:56 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:56 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:13:56 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:56 INFO MSTransformManager::parseDataSelParams field selection is 2 2026-03-19 09:13:56 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:56 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:56 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:13:56 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:13:56 INFO MSTransformManager::open Select data 2026-03-19 09:13:56 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:56 INFO MSTransformDataHandler::makeSelection 6125 out of 245000 rows are going to be considered due to the selection criteria. 2026-03-19 09:13:57 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:13:57 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 00h00m01 -29d55m40' successfully parsed 2026-03-19 09:13:57 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:57 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:57 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:56.313151 End time: 2026-03-19 09:13:56.683119 2026-03-19 09:13:57 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:57 INFO phaseshift::::casa ########################################## .2026-03-19 09:13:58 INFO phaseshift::::casa ########################################## 2026-03-19 09:13:58 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:13:58 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' ) 2026-03-19 09:13:58 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:13:58 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:13:58 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:13:58 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:13:58 INFO MSTransformManager::parseDataSelParams scan intent selection is *FLUX* 2026-03-19 09:13:58 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:13:58 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:13:58 INFO MSTransformManager::open Select data 2026-03-19 09:13:58 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:13:58 INFO MSTransformDataHandler::makeSelection 570 out of 6270 rows are going to be considered due to the selection criteria. 2026-03-19 09:13:58 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-03-19 09:13:58 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-03-19 09:13:59 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:13:59 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -06d23m35' successfully parsed 2026-03-19 09:13:59 INFO phaseshift::::casa Shift phase center 2026-03-19 09:13:59 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:13:59 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:57.576523 End time: 2026-03-19 09:13:58.628603 2026-03-19 09:13:59 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:13:59 INFO phaseshift::::casa ########################################## .2026-03-19 09:14:00 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:00 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:14:00 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' ) 2026-03-19 09:14:00 INFO MSTransformManager::parseMsSpecParams Input file name is mms_copy.mms 2026-03-19 09:14:00 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:14:00 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:14:00 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:14:00 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:14:00 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:14:00 INFO MSTransformManager::open Select data 2026-03-19 09:14:00 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:14:00 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:14:00 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 05h30m48 13d31m48' successfully parsed 2026-03-19 09:14:00 INFO phaseshift::::casa Shift phase center 2026-03-19 09:14:00 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:14:00 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:13:59.754442 End time: 2026-03-19 09:14:00.456920 2026-03-19 09:14:00 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:14:00 INFO phaseshift::::casa ########################################## .2026-03-19 09:14:01 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:01 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:14:01 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' ) 2026-03-19 09:14:01 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:14:01 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:14:01 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:14:01 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:14:01 INFO MSTransformManager::parseDataSelParams observation selection is 1 2026-03-19 09:14:01 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:14:01 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:14:01 INFO MSTransformManager::open Select data 2026-03-19 09:14:01 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:14:01 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: MSSelectionNullSelection : The selected table has zero rows. 2026-03-19 09:14:01 INFO phaseshift::::casa Traceback (most recent call last): 2026-03-19 09:14:01 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-03-19 09:14:01 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'] ) 2026-03-19 09:14:01 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:14:01 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 99, in phaseshift 2026-03-19 09:14:01 INFO phaseshift::::casa+ mtlocal.open() 2026-03-19 09:14:01 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/mstransformer.py", line 36, in open 2026-03-19 09:14:01 INFO phaseshift::::casa+ return self._swigobj.open() 2026-03-19 09:14:01 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:14:01 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/mstransformer.py", line 176, in open 2026-03-19 09:14:01 INFO phaseshift::::casa+ return _mstransformer.mstransformer_open(self) 2026-03-19 09:14:01 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:14:01 INFO phaseshift::::casa+ RuntimeError: MSSelectionNullSelection : The selected table has zero rows. 2026-03-19 09:14:01 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:14:01.406886 End time: 2026-03-19 09:14:01.444767 2026-03-19 09:14:01 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:14:01 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:01 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:01 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:14:01 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' ) 2026-03-19 09:14:01 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:14:01 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:14:01 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:14:01 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:14:01 INFO MSTransformManager::parseDataSelParams observation selection is 0 2026-03-19 09:14:01 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:14:01 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:14:01 INFO MSTransformManager::open Select data 2026-03-19 09:14:01 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:14:02 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-03-19 09:14:02 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-03-19 09:14:02 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:14:02 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -06d23m35' successfully parsed 2026-03-19 09:14:02 INFO phaseshift::::casa Shift phase center 2026-03-19 09:14:03 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:14:03 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:14:01.445764 End time: 2026-03-19 09:14:02.579417 2026-03-19 09:14:03 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:14:03 INFO phaseshift::::casa ########################################## .2026-03-19 09:14:04 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:04 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:14:04 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40d06m00' ) 2026-03-19 09:14:04 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:14:04 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:14:04 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:14:04 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:14:04 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:14:04 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:14:04 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:14:04 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:14:04 INFO MSTransformManager::open Select data 2026-03-19 09:14:04 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:14:04 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:14:04 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-03-19 09:14:04 INFO phaseshift::::casa Shift phase center 2026-03-19 09:14:05 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:14:05 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:14:03.580632 End time: 2026-03-19 09:14:05.039721 2026-03-19 09:14:05 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:14:05 INFO phaseshift::::casa ########################################## .2026-03-19 09:14:06 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:06 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:14:06 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='' ) 2026-03-19 09:14:06 SEVERE phaseshift::::casa Exception Reported: Error in phaseshift: phasecenter parameter must be specified 2026-03-19 09:14:06 INFO phaseshift::::casa Traceback (most recent call last): 2026-03-19 09:14:06 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/phaseshift.py", line 577, in __call__ 2026-03-19 09:14:06 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'] ) 2026-03-19 09:14:06 INFO phaseshift::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-19 09:14:06 INFO phaseshift::::casa+ File "/wheeldirectory/casa-6.7.1-13-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_phaseshift.py", line 31, in phaseshift 2026-03-19 09:14:06 INFO phaseshift::::casa+ raise ValueError("phasecenter parameter must be specified") 2026-03-19 09:14:06 INFO phaseshift::::casa+ ValueError: phasecenter parameter must be specified 2026-03-19 09:14:06 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:14:05.966668 End time: 2026-03-19 09:14:05.967875 2026-03-19 09:14:06 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:14:06 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:06 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:06 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:14:06 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' ) 2026-03-19 09:14:06 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:14:06 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:14:06 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:14:06 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:14:06 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:14:06 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:14:06 INFO MSTransformManager::open Select data 2026-03-19 09:14:06 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:14:07 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-03-19 09:14:07 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-03-19 09:14:07 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:14:07 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 00h06m14 -08d23m35' successfully parsed 2026-03-19 09:14:07 INFO phaseshift::::casa Shift phase center 2026-03-19 09:14:07 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:14:07 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:14:05.968995 End time: 2026-03-19 09:14:07.161481 2026-03-19 09:14:07 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:14:07 INFO phaseshift::::casa ########################################## .2026-03-19 09:14:08 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:08 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:14:08 INFO phaseshift::::casa phaseshift( vis='nep_copy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='00h06m14 -08d23m35' ) 2026-03-19 09:14:08 INFO MSTransformManager::parseMsSpecParams Input file name is nep_copy.ms 2026-03-19 09:14:08 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:14:08 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:14:08 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:14:08 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:14:08 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:14:08 INFO MSTransformManager::open Select data 2026-03-19 09:14:08 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:14:09 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM0_Pallas_57501.36900000.tab for output field Pallas 2026-03-19 09:14:09 INFO MSTransformDataHandler::copyEphemerisTable Transferring ephemeris EPHEM1_Neptune_57501.36900000.tab for output field Neptune 2026-03-19 09:14:09 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:14:09 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center '00h06m14 -08d23m35' successfully parsed 2026-03-19 09:14:09 INFO phaseshift::::casa Shift phase center 2026-03-19 09:14:09 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:14:09 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:14:08.048219 End time: 2026-03-19 09:14:09.112641 2026-03-19 09:14:09 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:14:09 INFO phaseshift::::casa ########################################## .2026-03-19 09:14:10 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:10 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:14:10 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' ) 2026-03-19 09:14:10 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:14:10 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:14:10 INFO MSTransformManager::parseMsSpecParams Output file name is post_phaseshift.ms 2026-03-19 09:14:10 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:14:10 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:14:10 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:14:10 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:14:10 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:14:10 INFO MSTransformManager::open Select data 2026-03-19 09:14:10 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:14:10 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:14:10 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-03-19 09:14:10 INFO phaseshift::::casa Shift phase center 2026-03-19 09:14:12 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:14:12 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:14:10.103694 End time: 2026-03-19 09:14:11.794712 2026-03-19 09:14:12 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:14:12 INFO phaseshift::::casa ########################################## 2026-03-19 09:14:12 INFO tclean::::casa ########################################## 2026-03-19 09:14:12 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:14:12 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 ) 2026-03-19 09:14:12 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:14:12 INFO SynthesisImagerVi2::selectData MS : datacopy.ms | [Opened in readonly mode] 2026-03-19 09:14:12 INFO SynthesisImagerVi2::selectData NRows selected : 63180 2026-03-19 09:14:12 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_pre] : 2026-03-19 09:14:12 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_pre] : 2026-03-19 09:14:12 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:14:12 INFO SynthesisImagerVi2::defineImage Shape: [2048, 2048, 1, 1] Spectral: [1.49998e+09] at [0] with increment [1.99998e+09] 2026-03-19 09:14:12 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im2_pre] with ftmachine : wprojectft 2026-03-19 09:14:12 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.3842 GB. Available mem.: 10.99 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:14:12 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:14:12 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im2_pre] : hogbom 2026-03-19 09:14:12 INFO SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:14:12 INFO WPConvFunc::findConvFunction W projection using 128 planes 2026-03-19 09:14:12 INFO WPConvFunc::findConvFunction Using maximum possible W = 10313.2 (wavelengths) 2026-03-19 09:14:12 INFO WPConvFunc::findConvFunction Typical wavelength = 0.299796 (m) 2026-03-19 09:14:12 INFO WPConvFunc::findConvFunction Scaling in W (at maximum W) = 0.639422 wavelengths per pixel 2026-03-19 09:14:50 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 2026-03-19 09:14:50 INFO WPConvFunc::findConvFunction Memory used in gridding function = 7 MB from maximum 15884 MB 2026-03-19 09:14:52 INFO SIImageStore::calcSensitivity [im2_pre] Theoretical sensitivity (Jy/bm):0.00204403 2026-03-19 09:14:53 INFO SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.095354 2026-03-19 09:14:53 INFO SIImageStore::printBeamSet Beam : 54.8469 arcsec, 48.7749 arcsec, 82.835 deg 2026-03-19 09:14:53 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:14:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:14:56 INFO task_tclean::SDAlgorithmBase::restore [im2_pre] : Restoring model image. 2026-03-19 09:14:56 WARN task_tclean::SIImageStore::restore (file /source/casa6/casatools/src/code/synthesis/ImagerObjects/SIImageStore.cc, line 2298) Restoring with an empty model image. Only residuals will be processed to form the output restored image. 2026-03-19 09:14:56 INFO task_tclean::SIImageStore::restore Beam for chan : 0 : 54.8469 arcsec, 48.7749 arcsec, 82.835 deg 2026-03-19 09:14:56 INFO tclean::::casa Searching for images with prefix 'im2_pre'... Found these, writing history into them: ['im2_pre.image', 'im2_pre.psf', 'im2_pre.pb', 'im2_pre.model', 'im2_pre.residual', 'im2_pre.sumwt'] 2026-03-19 09:14:56 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:14:11.857560 End time: 2026-03-19 09:14:56.112249 2026-03-19 09:14:56 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:14:56 INFO tclean::::casa ########################################## 2026-03-19 09:14:56 INFO tclean::::casa ########################################## 2026-03-19 09:14:56 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:14:56 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 ) 2026-03-19 09:14:56 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:14:56 INFO SynthesisImagerVi2::selectData MS : post_phaseshift.ms | [Opened in readonly mode] 2026-03-19 09:14:56 INFO SynthesisImagerVi2::selectData NRows selected : 63180 2026-03-19 09:14:56 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_post_phaseshift] : 2026-03-19 09:14:56 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_post_phaseshift] : 2026-03-19 09:14:56 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:14:56 INFO SynthesisImagerVi2::defineImage Shape: [2048, 2048, 1, 1] Spectral: [1.49998e+09] at [0] with increment [1.99998e+09] 2026-03-19 09:14:56 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im2_post_phaseshift] with ftmachine : wprojectft 2026-03-19 09:14:56 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.3842 GB. Available mem.: 10.97 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:14:56 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:14:56 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im2_post_phaseshift] : hogbom 2026-03-19 09:14:56 INFO SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:14:56 INFO WPConvFunc::findConvFunction W projection using 128 planes 2026-03-19 09:14:56 INFO WPConvFunc::findConvFunction Using maximum possible W = 10313.2 (wavelengths) 2026-03-19 09:14:56 INFO WPConvFunc::findConvFunction Typical wavelength = 0.299796 (m) 2026-03-19 09:14:56 INFO WPConvFunc::findConvFunction Scaling in W (at maximum W) = 0.639422 wavelengths per pixel 2026-03-19 09:15:31 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 2026-03-19 09:15:31 INFO WPConvFunc::findConvFunction Memory used in gridding function = 7 MB from maximum 15884 MB 2026-03-19 09:15:34 INFO SIImageStore::calcSensitivity [im2_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00204403 2026-03-19 09:15:34 INFO SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.074982 2026-03-19 09:15:34 INFO SIImageStore::printBeamSet Beam : 54.3737 arcsec, 48.741 arcsec, 82.2249 deg 2026-03-19 09:15:34 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:15:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:15:38 INFO task_tclean::SDAlgorithmBase::restore [im2_post_phaseshift] : Restoring model image. 2026-03-19 09:15:38 WARN task_tclean::SIImageStore::restore (file /source/casa6/casatools/src/code/synthesis/ImagerObjects/SIImageStore.cc, line 2298) Restoring with an empty model image. Only residuals will be processed to form the output restored image. 2026-03-19 09:15:38 INFO task_tclean::SIImageStore::restore Beam for chan : 0 : 54.3737 arcsec, 48.741 arcsec, 82.2249 deg 2026-03-19 09:15:38 INFO tclean::::casa Searching for images with prefix 'im2_post_phaseshift'... Found these, writing history into them: ['im2_post_phaseshift.residual', 'im2_post_phaseshift.psf', 'im2_post_phaseshift.sumwt', 'im2_post_phaseshift.image', 'im2_post_phaseshift.pb', 'im2_post_phaseshift.model'] 2026-03-19 09:15:38 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:14:56.132655 End time: 2026-03-19 09:15:37.981726 2026-03-19 09:15:38 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:15:38 INFO tclean::::casa ########################################## 2026-03-19 09:15:38 INFO tclean::::casa ########################################## 2026-03-19 09:15:38 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:15:38 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 ) 2026-03-19 09:15:38 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:15:38 INFO SynthesisImagerVi2::selectData MS : post_phaseshift.ms | [Opened in readonly mode] 2026-03-19 09:15:38 INFO SynthesisImagerVi2::selectData NRows selected : 63180 2026-03-19 09:15:38 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_post_phaseshift_tclean_phasecenter] : 2026-03-19 09:15:38 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im2_post_phaseshift_tclean_phasecenter] : 2026-03-19 09:15:38 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:15:38 INFO SynthesisImagerVi2::defineImage Shape: [2048, 2048, 1, 1] Spectral: [1.49998e+09] at [0] with increment [1.99998e+09] 2026-03-19 09:15:38 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im2_post_phaseshift_tclean_phasecenter] with ftmachine : wprojectft 2026-03-19 09:15:38 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.3842 GB. Available mem.: 10.99 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:15:38 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:15:38 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im2_post_phaseshift_tclean_phasecenter] : hogbom 2026-03-19 09:15:38 INFO SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:15:38 INFO WPConvFunc::findConvFunction W projection using 128 planes 2026-03-19 09:15:38 INFO WPConvFunc::findConvFunction Using maximum possible W = 10313.2 (wavelengths) 2026-03-19 09:15:38 INFO WPConvFunc::findConvFunction Typical wavelength = 0.299796 (m) 2026-03-19 09:15:38 INFO WPConvFunc::findConvFunction Scaling in W (at maximum W) = 0.639422 wavelengths per pixel 2026-03-19 09:16:13 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 2026-03-19 09:16:13 INFO WPConvFunc::findConvFunction Memory used in gridding function = 7 MB from maximum 15884 MB 2026-03-19 09:16:16 INFO SIImageStore::calcSensitivity [im2_post_phaseshift_tclean_phasecenter] Theoretical sensitivity (Jy/bm):0.00204403 2026-03-19 09:16:16 INFO SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.075514 2026-03-19 09:16:16 INFO SIImageStore::printBeamSet Beam : 54.8469 arcsec, 48.775 arcsec, 82.8349 deg 2026-03-19 09:16:16 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:16:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:16:19 INFO task_tclean::SDAlgorithmBase::restore [im2_post_phaseshift_tclean_phasecenter] : Restoring model image. 2026-03-19 09:16:19 WARN task_tclean::SIImageStore::restore (file /source/casa6/casatools/src/code/synthesis/ImagerObjects/SIImageStore.cc, line 2298) Restoring with an empty model image. Only residuals will be processed to form the output restored image. 2026-03-19 09:16:19 INFO task_tclean::SIImageStore::restore Beam for chan : 0 : 54.8469 arcsec, 48.775 arcsec, 82.8349 deg 2026-03-19 09:16:19 INFO tclean::::casa Searching for images with prefix 'im2_post_phaseshift_tclean_phasecenter'... Found these, writing history into them: ['im2_post_phaseshift_tclean_phasecenter.image', 'im2_post_phaseshift_tclean_phasecenter.psf', 'im2_post_phaseshift_tclean_phasecenter.sumwt', 'im2_post_phaseshift_tclean_phasecenter.residual', 'im2_post_phaseshift_tclean_phasecenter.model', 'im2_post_phaseshift_tclean_phasecenter.pb'] 2026-03-19 09:16:19 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:15:38.008396 End time: 2026-03-19 09:16:19.353042 2026-03-19 09:16:19 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:16:19 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} .2026-03-19 09:16:20 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:20 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:16:20 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' ) 2026-03-19 09:16:20 INFO MSTransformManager::parseMsSpecParams Input file name is ngc_copy.ms 2026-03-19 09:16:20 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:16:20 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:16:20 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:16:20 INFO MSTransformManager::parseDataSelParams spw selection is 1 2026-03-19 09:16:20 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:16:20 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:16:20 INFO MSTransformManager::initDataSelectionParams Selected SPWs Ids are Axis Lengths: [1, 4] (NB: Matrix in Row/Column order) 2026-03-19 09:16:20 INFO MSTransformManager::initDataSelectionParams+ [1, 0, 4, 1] 2026-03-19 09:16:20 INFO MSTransformManager::open Select data 2026-03-19 09:16:20 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:16:21 INFO MSTransformDataHandler::makeSelection 13338 out of 26676 rows are going to be considered due to the selection criteria. 2026-03-19 09:16:21 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:16:21 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 23h11m54 61d10m54' successfully parsed 2026-03-19 09:16:21 INFO phaseshift::::casa Shift phase center 2026-03-19 09:16:21 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:16:21 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:16:20.472042 End time: 2026-03-19 09:16:20.918529 2026-03-19 09:16:21 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:16:21 INFO phaseshift::::casa ########################################## .2026-03-19 09:16:22 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:22 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:16:22 INFO phaseshift::::casa phaseshift( vis='datacopy.ms', outputvis='phaseshiftout.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40d06m00' ) 2026-03-19 09:16:22 INFO MSTransformManager::parseMsSpecParams Input file name is datacopy.ms 2026-03-19 09:16:22 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:16:22 INFO MSTransformManager::parseMsSpecParams Output file name is phaseshiftout.ms 2026-03-19 09:16:22 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:16:22 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:16:22 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:16:22 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:16:22 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:16:22 INFO MSTransformManager::open Select data 2026-03-19 09:16:22 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:16:22 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:16:22 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-03-19 09:16:22 INFO phaseshift::::casa Shift phase center 2026-03-19 09:16:23 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:16:23 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:16:21.880606 End time: 2026-03-19 09:16:23.422872 2026-03-19 09:16:23 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:16:23 INFO phaseshift::::casa ########################################## .2026-03-19 09:16:24 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:24 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:16:24 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' ) 2026-03-19 09:16:24 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:16:24 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:16:24 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:16:24 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:16:24 INFO MSTransformManager::parseDataSelParams field selection is 0 2026-03-19 09:16:24 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:16:24 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:16:24 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:16:24 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:16:24 INFO MSTransformManager::open Select data 2026-03-19 09:16:24 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:16:24 INFO MSTransformDataHandler::makeSelection 3510 out of 7020 rows are going to be considered due to the selection criteria. 2026-03-19 09:16:24 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:16:24 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40.108888889deg' successfully parsed 2026-03-19 09:16:24 INFO phaseshift::::casa Shift phase center 2026-03-19 09:16:24 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:16:24 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:16:23.943289 End time: 2026-03-19 09:16:24.398417 2026-03-19 09:16:24 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:16:24 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:24 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-03-19 09:16:25 INFO tclean::::casa ########################################## 2026-03-19 09:16:25 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:16:25 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 ) 2026-03-19 09:16:25 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:16:25 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:16:25 INFO SynthesisImagerVi2::selectData NRows selected : 3510 2026-03-19 09:16:25 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:25 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:25 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:16:25 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99981e+08] at [0] with increment [9.99998e+07] 2026-03-19 09:16:25 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:16:25 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.98 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:16:25 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:16:25 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:16:25 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:16:25 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.0119352 2026-03-19 09:16:25 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01229 2026-03-19 09:16:25 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.8546 arcsec, 77.1301 arcsec, -77.9234 deg 2026-03-19 09:16:25 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:16:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:16:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:16:25 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:16:25 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:16:25 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:16:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6347251534461975, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.634725, CycleNiter=20, Gain=0.3 2026-03-19 09:16:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:16:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:16:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:16:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:16:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07467404007911682, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.074674, CycleNiter=14, Gain=0.3 2026-03-19 09:16:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692058, Reached cyclethreshold. 2026-03-19 09:16:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:16:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:16:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692053, over full image : 0.0692053 2026-03-19 09:16:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.00878525897860527, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00878526, CycleNiter=8, Gain=0.3 2026-03-19 09:16:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692053->0.00814193, Reached cyclethreshold. 2026-03-19 09:16:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:16:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:16:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814184, over full image : 0.00814184 2026-03-19 09:16:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0010335649130865932, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00103356, CycleNiter=2, Gain=0.3 2026-03-19 09:16:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814184->0.00279265, Reached cycleniter. 2026-03-19 09:16:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:16:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:16:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279276, over full image : 0.00279276 2026-03-19 09:16:26 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:16:26 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:16:26 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:16:26 INFO SIImageStore::restore Beam for chan : 0 : 88.8546 arcsec, 77.1301 arcsec, -77.9234 deg 2026-03-19 09:16:26 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:16:26 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:16:24.619647 End time: 2026-03-19 09:16:25.980758 2026-03-19 09:16:26 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:16:26 INFO tclean::::casa ########################################## 2026-03-19 09:16:26 INFO imstat::::casa ########################################## 2026-03-19 09:16:26 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:16:26 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 ) 2026-03-19 09:16:26 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:16:26 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:16:26 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:16:26 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:16:26 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:16:26 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) 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.888, +39.49.25.864, I, 9.99981e+08Hz 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.069, +40.23.25.888, I, 9.99981e+08Hz 2026-03-19 09:16:26 INFO imstat:::: Values --- 2026-03-19 09:16:26 INFO imstat:::: -- flux density [flux]: 4.99409 Jy 2026-03-19 09:16:26 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:16:26 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- minimum value [min]: -0.00012283 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 124, 0, 0] 2026-03-19 09:16:26 INFO imstat:::: -- position of min value (pixel) [minpos]: [100, 55, 0, 0] 2026-03-19 09:16:26 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 9.99981e+08Hz 2026-03-19 09:16:26 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:09.479, +39.56.47.897, I, 9.99981e+08Hz 2026-03-19 09:16:26 INFO imstat:::: -- Sum of pixel values [sum]: 605.961 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1516.75 Jy/beam.Jy/beam 2026-03-19 09:16:26 INFO imstat:::: Statistics --- 2026-03-19 09:16:26 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00924623 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- Variance of the pixel values : 0.0230586 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.15185 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- Root mean square [rms]: 0.152131 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- Median of the pixel values [median]: -2.09007e-05 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 3.00259e-05 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- IQR [quartile]: 6.1616e-05 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- First quartile [q1]: -4.79744e-05 Jy/beam 2026-03-19 09:16:26 INFO imstat:::: -- Third quartile [q3]: 1.36416e-05 Jy/beam 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:16:26 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:16:26 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 2026-03-19 09:16:26 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:16:25.991349 End time: 2026-03-19 09:16:26.011234 2026-03-19 09:16:26 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:16:26 INFO imstat::::casa ########################################## 2026-03-19 09:16:26 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:26 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:16:26 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' ) 2026-03-19 09:16:26 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:16:26 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:16:26 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:16:26 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:16:26 INFO MSTransformManager::parseDataSelParams field selection is fake 2026-03-19 09:16:26 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:16:26 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:16:26 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:16:26 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:16:26 INFO MSTransformManager::open Select data 2026-03-19 09:16:26 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:16:26 INFO MSTransformDataHandler::makeSelection 3510 out of 7020 rows are going to be considered due to the selection criteria. 2026-03-19 09:16:26 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:16:26 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40.108888889deg' successfully parsed 2026-03-19 09:16:26 INFO phaseshift::::casa Shift phase center 2026-03-19 09:16:26 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:16:26 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:16:26.021879 End time: 2026-03-19 09:16:26.370530 2026-03-19 09:16:26 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:16:26 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:26 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data.ms... 2026-03-19 09:16:26 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-03-19 09:16:26 INFO tclean::::casa ########################################## 2026-03-19 09:16:26 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:16:26 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 ) 2026-03-19 09:16:26 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:16:26 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:16:26 INFO SynthesisImagerVi2::selectData NRows selected : 3510 2026-03-19 09:16:26 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:26 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:26 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:16:26 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99981e+08] at [0] with increment [9.99998e+07] 2026-03-19 09:16:26 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:16:26 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.98 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:16:27 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:16:27 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:16:27 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:16:27 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.0119352 2026-03-19 09:16:27 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.022173 2026-03-19 09:16:27 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.8546 arcsec, 77.1301 arcsec, -77.9234 deg 2026-03-19 09:16:27 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:16:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:16:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:16:27 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:16:27 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:16:27 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:16:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6347251534461975, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.634725, CycleNiter=20, Gain=0.3 2026-03-19 09:16:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:16:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:16:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:16:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:16:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07467404007911682, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.074674, CycleNiter=14, Gain=0.3 2026-03-19 09:16:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692058, Reached cyclethreshold. 2026-03-19 09:16:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:16:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:16:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692053, over full image : 0.0692053 2026-03-19 09:16:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.00878525897860527, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00878526, CycleNiter=8, Gain=0.3 2026-03-19 09:16:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692053->0.00814193, Reached cyclethreshold. 2026-03-19 09:16:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:16:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:16:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814184, over full image : 0.00814184 2026-03-19 09:16:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0010335649130865932, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00103356, CycleNiter=2, Gain=0.3 2026-03-19 09:16:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814184->0.00279265, Reached cycleniter. 2026-03-19 09:16:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:16:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:16:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279276, over full image : 0.00279276 2026-03-19 09:16:27 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:16:27 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:16:27 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:16:28 INFO SIImageStore::restore Beam for chan : 0 : 88.8546 arcsec, 77.1301 arcsec, -77.9234 deg 2026-03-19 09:16:28 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:16:28 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:16:26.408733 End time: 2026-03-19 09:16:27.613371 2026-03-19 09:16:28 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:16:28 INFO tclean::::casa ########################################## 2026-03-19 09:16:28 INFO imstat::::casa ########################################## 2026-03-19 09:16:28 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:16:28 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 ) 2026-03-19 09:16:28 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:16:28 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:16:28 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:16:28 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:16:28 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:16:28 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) 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.888, +39.49.25.864, I, 9.99981e+08Hz 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.069, +40.23.25.888, I, 9.99981e+08Hz 2026-03-19 09:16:28 INFO imstat:::: Values --- 2026-03-19 09:16:28 INFO imstat:::: -- flux density [flux]: 4.99409 Jy 2026-03-19 09:16:28 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:16:28 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- minimum value [min]: -0.00012283 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 124, 0, 0] 2026-03-19 09:16:28 INFO imstat:::: -- position of min value (pixel) [minpos]: [100, 55, 0, 0] 2026-03-19 09:16:28 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 9.99981e+08Hz 2026-03-19 09:16:28 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:09.479, +39.56.47.897, I, 9.99981e+08Hz 2026-03-19 09:16:28 INFO imstat:::: -- Sum of pixel values [sum]: 605.961 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1516.75 Jy/beam.Jy/beam 2026-03-19 09:16:28 INFO imstat:::: Statistics --- 2026-03-19 09:16:28 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00924623 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- Variance of the pixel values : 0.0230586 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.15185 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- Root mean square [rms]: 0.152131 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- Median of the pixel values [median]: -2.09007e-05 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 3.00259e-05 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- IQR [quartile]: 6.1616e-05 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- First quartile [q1]: -4.79744e-05 Jy/beam 2026-03-19 09:16:28 INFO imstat:::: -- Third quartile [q3]: 1.36416e-05 Jy/beam 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:16:28 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:16:28 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 2026-03-19 09:16:28 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:16:27.615525 End time: 2026-03-19 09:16:27.634579 2026-03-19 09:16:28 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:16:28 INFO imstat::::casa ########################################## 2026-03-19 09:16:28 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:28 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:16:28 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40.108888889deg' ) 2026-03-19 09:16:28 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:16:28 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:16:28 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:16:28 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:16:28 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:16:28 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:16:28 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:16:28 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:16:28 INFO MSTransformManager::open Select data 2026-03-19 09:16:28 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:16:28 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:16:28 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40.108888889deg' successfully parsed 2026-03-19 09:16:28 INFO phaseshift::::casa Shift phase center 2026-03-19 09:16:28 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:16:28 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:16:27.645113 End time: 2026-03-19 09:16:28.073212 2026-03-19 09:16:28 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:16:28 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:28 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-03-19 09:16:28 INFO tclean::::casa ########################################## 2026-03-19 09:16:28 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:16:28 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 ) 2026-03-19 09:16:28 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:16:28 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:16:28 INFO SynthesisImagerVi2::selectData NRows selected : 7020 2026-03-19 09:16:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:28 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:16:28 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:16:28 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:16:28 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.98 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:16:28 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:16:28 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:16:28 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:16:29 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00843949 2026-03-19 09:16:29 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010311 2026-03-19 09:16:29 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.9193 arcsec, 77.6082 arcsec, 88.5528 deg 2026-03-19 09:16:29 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:16:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:16:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:16:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:16:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:16:29 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:16:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6069034934043884, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.606903, CycleNiter=20, Gain=0.3 2026-03-19 09:16:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:16:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:16:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:16:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:16:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07140088081359863, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0714009, CycleNiter=14, Gain=0.3 2026-03-19 09:16:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692058, Reached cyclethreshold. 2026-03-19 09:16:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:16:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:16:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692053, over full image : 0.0692053 2026-03-19 09:16:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.00840018317103386, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00840018, CycleNiter=8, Gain=0.3 2026-03-19 09:16:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692053->0.00814193, Reached cyclethreshold. 2026-03-19 09:16:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:16:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:16:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814189, over full image : 0.00814189 2026-03-19 09:16:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009882674785330892, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000988267, CycleNiter=2, Gain=0.3 2026-03-19 09:16:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814189->0.00279267, Reached cycleniter. 2026-03-19 09:16:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:16:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:16:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0027928, over full image : 0.0027928 2026-03-19 09:16:29 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:16:29 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:16:29 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:16:29 INFO SIImageStore::restore Beam for chan : 0 : 88.9193 arcsec, 77.6082 arcsec, 88.5528 deg 2026-03-19 09:16:30 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:16:30 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:16:28.243184 End time: 2026-03-19 09:16:29.576911 2026-03-19 09:16:30 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:16:30 INFO tclean::::casa ########################################## 2026-03-19 09:16:30 INFO imstat::::casa ########################################## 2026-03-19 09:16:30 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:16:30 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 ) 2026-03-19 09:16:30 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:16:30 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:16:30 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:16:30 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:16:30 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:16:30 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) 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.888, +39.49.25.864, I, 999981604.64Hz 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.069, +40.23.25.888, I, 999981604.64Hz 2026-03-19 09:16:30 INFO imstat:::: Values --- 2026-03-19 09:16:30 INFO imstat:::: -- flux density [flux]: 4.99444 Jy 2026-03-19 09:16:30 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:16:30 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- minimum value [min]: -9.70533e-05 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 124, 0, 0] 2026-03-19 09:16:30 INFO imstat:::: -- position of min value (pixel) [minpos]: [158, 70, 0, 0] 2026-03-19 09:16:30 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981604.64Hz 2026-03-19 09:16:30 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:29.120, +39.58.47.882, I, 999981604.64Hz 2026-03-19 09:16:30 INFO imstat:::: -- Sum of pixel values [sum]: 610.203 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1527.26 Jy/beam.Jy/beam 2026-03-19 09:16:30 INFO imstat:::: Statistics --- 2026-03-19 09:16:30 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00931096 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- Variance of the pixel values : 0.0232178 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152374 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- Root mean square [rms]: 0.152657 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- Median of the pixel values [median]: -1.85752e-05 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.83975e-05 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- IQR [quartile]: 3.74524e-05 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- First quartile [q1]: -3.53147e-05 Jy/beam 2026-03-19 09:16:30 INFO imstat:::: -- Third quartile [q3]: 2.13765e-06 Jy/beam 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:16:30 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:16:30 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 2026-03-19 09:16:30 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:16:29.578817 End time: 2026-03-19 09:16:29.596948 2026-03-19 09:16:30 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:16:30 INFO imstat::::casa ########################################## 2026-03-19 09:16:30 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:30 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:16:30 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' ) 2026-03-19 09:16:30 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:16:30 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:16:30 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:16:30 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:16:30 INFO MSTransformManager::parseDataSelParams field selection is 1 2026-03-19 09:16:30 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:16:30 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:16:30 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:16:30 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:16:30 INFO MSTransformManager::open Select data 2026-03-19 09:16:30 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:16:30 INFO MSTransformDataHandler::makeSelection 3510 out of 7020 rows are going to be considered due to the selection criteria. 2026-03-19 09:16:30 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:16:30 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 50.108888889deg' successfully parsed 2026-03-19 09:16:30 INFO phaseshift::::casa Shift phase center 2026-03-19 09:16:30 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:16:30 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:16:29.607310 End time: 2026-03-19 09:16:29.988285 2026-03-19 09:16:30 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:16:30 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:30 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-03-19 09:16:30 INFO tclean::::casa ########################################## 2026-03-19 09:16:30 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:16:30 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 ) 2026-03-19 09:16:30 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:16:30 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:16:30 INFO SynthesisImagerVi2::selectData NRows selected : 3510 2026-03-19 09:16:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:30 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:16:30 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99968e+08] at [0] with increment [9.99982e+07] 2026-03-19 09:16:30 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:16:30 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.98 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:16:30 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:16:30 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:16:30 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:16:30 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.0119352 2026-03-19 09:16:30 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010624 2026-03-19 09:16:30 INFO task_tclean::SIImageStore::printBeamSet Beam : 89.6341 arcsec, 77.7728 arcsec, 83.0376 deg 2026-03-19 09:16:30 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:16:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:16:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 0.290316 2026-03-19 09:16:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:16:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:16:31 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.290316, over full image : 0.290316 2026-03-19 09:16:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.03697436675429344, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0369744, CycleNiter=20, Gain=0.3 2026-03-19 09:16:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->20 [20], model=0->1.38616, peakres=0.290316->0.18329, Reached cycleniter. 2026-03-19 09:16:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:16:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:16:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.180075, over full image : 0.180075 2026-03-19 09:16:31 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:16:31 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:16:31 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:16:31 INFO SIImageStore::restore Beam for chan : 0 : 89.6341 arcsec, 77.7728 arcsec, 83.0376 deg 2026-03-19 09:16:31 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:16:31 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:16:30.226047 End time: 2026-03-19 09:16:30.946264 2026-03-19 09:16:31 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:16:31 INFO tclean::::casa ########################################## 2026-03-19 09:16:31 INFO imstat::::casa ########################################## 2026-03-19 09:16:31 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:16:31 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 ) 2026-03-19 09:16:31 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:16:31 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:16:31 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:16:31 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:16:31 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:16:31 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) 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:35.817, +49.49.24.973, I, 9.99968e+08Hz 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:03.760, +50.23.24.993, I, 9.99968e+08Hz 2026-03-19 09:16:31 INFO imstat:::: Values --- 2026-03-19 09:16:31 INFO imstat:::: -- flux density [flux]: -0.242513 Jy 2026-03-19 09:16:31 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:16:31 INFO imstat:::: -- maximum value [max]: 0.285872 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- minimum value [min]: -0.1468 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- position of max value (pixel) [maxpos]: [54, 120, 0, 0] 2026-03-19 09:16:31 INFO imstat:::: -- position of min value (pixel) [minpos]: [148, 28, 0, 0] 2026-03-19 09:16:31 INFO imstat:::: -- position of max value (world) [maxposf]: 19:54:51.516, +50.05.26.984, I, 9.99968e+08Hz 2026-03-19 09:16:31 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:33.445, +49.53.11.924, I, 9.99968e+08Hz 2026-03-19 09:16:31 INFO imstat:::: -- Sum of pixel values [sum]: -29.9309 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 233.452 Jy/beam.Jy/beam 2026-03-19 09:16:31 INFO imstat:::: Statistics --- 2026-03-19 09:16:31 INFO imstat:::: -- Mean of the pixel values [mean]: -0.00045671 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- Variance of the pixel values : 0.00356204 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.0596828 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- Root mean square [rms]: 0.0596841 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- Median of the pixel values [median]: -0.00646386 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 0.0391011 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- IQR [quartile]: 0.0789052 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- First quartile [q1]: -0.0432754 Jy/beam 2026-03-19 09:16:31 INFO imstat:::: -- Third quartile [q3]: 0.0356299 Jy/beam 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:16:31 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:16:31 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 2026-03-19 09:16:31 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:16:30.948354 End time: 2026-03-19 09:16:30.966872 2026-03-19 09:16:31 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:16:31 INFO imstat::::casa ########################################## 2026-03-19 09:16:31 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:31 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:16:31 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' ) 2026-03-19 09:16:31 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:16:31 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:16:31 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:16:31 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:16:31 INFO MSTransformManager::parseDataSelParams field selection is pretend 2026-03-19 09:16:31 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:16:31 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:16:31 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:16:31 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:16:31 INFO MSTransformManager::open Select data 2026-03-19 09:16:31 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:16:31 INFO MSTransformDataHandler::makeSelection 3510 out of 7020 rows are going to be considered due to the selection criteria. 2026-03-19 09:16:31 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:16:31 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 50.108888889deg' successfully parsed 2026-03-19 09:16:31 INFO phaseshift::::casa Shift phase center 2026-03-19 09:16:31 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:16:31 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:16:30.977675 End time: 2026-03-19 09:16:31.309133 2026-03-19 09:16:31 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:16:31 INFO phaseshift::::casa ########################################## 2026-03-19 09:16:31 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data.ms... 2026-03-19 09:16:31 INFO msmetadata_cmpt.cc::open Performing internal consistency checks on sim_data_pshift.ms... 2026-03-19 09:16:31 INFO tclean::::casa ########################################## 2026-03-19 09:16:31 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:16:31 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 ) 2026-03-19 09:16:31 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:16:31 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:16:31 INFO SynthesisImagerVi2::selectData NRows selected : 3510 2026-03-19 09:16:31 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:31 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:16:31 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:16:31 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99968e+08] at [0] with increment [9.99982e+07] 2026-03-19 09:16:31 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:16:31 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.98 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:16:31 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:16:31 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:16:31 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:16:32 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.0119352 2026-03-19 09:16:32 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01056 2026-03-19 09:16:32 INFO task_tclean::SIImageStore::printBeamSet Beam : 89.6341 arcsec, 77.7728 arcsec, 83.0376 deg 2026-03-19 09:16:32 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:16:32 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:16:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 0.290316 2026-03-19 09:16:32 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:16:32 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:16:32 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.290316, over full image : 0.290316 2026-03-19 09:16:32 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.03697436675429344, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:16:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0369744, CycleNiter=20, Gain=0.3 2026-03-19 09:16:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->20 [20], model=0->1.38616, peakres=0.290316->0.18329, Reached cycleniter. 2026-03-19 09:16:32 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:16:32 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:16:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.180075, over full image : 0.180075 2026-03-19 09:16:32 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:16:32 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:16:32 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:16:32 INFO SIImageStore::restore Beam for chan : 0 : 89.6341 arcsec, 77.7728 arcsec, 83.0376 deg 2026-03-19 09:16:32 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:16:32 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:16:31.345984 End time: 2026-03-19 09:16:32.016435 2026-03-19 09:16:32 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:16:32 INFO tclean::::casa ########################################## 2026-03-19 09:16:32 INFO imstat::::casa ########################################## 2026-03-19 09:16:32 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:16:32 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 ) 2026-03-19 09:16:32 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:16:32 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:16:32 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:16:32 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:16:32 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:16:32 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) 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:35.817, +49.49.24.973, I, 9.99968e+08Hz 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:03.760, +50.23.24.993, I, 9.99968e+08Hz 2026-03-19 09:16:32 INFO imstat:::: Values --- 2026-03-19 09:16:32 INFO imstat:::: -- flux density [flux]: -0.242513 Jy 2026-03-19 09:16:32 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:16:32 INFO imstat:::: -- maximum value [max]: 0.285872 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- minimum value [min]: -0.1468 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- position of max value (pixel) [maxpos]: [54, 120, 0, 0] 2026-03-19 09:16:32 INFO imstat:::: -- position of min value (pixel) [minpos]: [148, 28, 0, 0] 2026-03-19 09:16:32 INFO imstat:::: -- position of max value (world) [maxposf]: 19:54:51.516, +50.05.26.984, I, 9.99968e+08Hz 2026-03-19 09:16:32 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:33.445, +49.53.11.924, I, 9.99968e+08Hz 2026-03-19 09:16:32 INFO imstat:::: -- Sum of pixel values [sum]: -29.9309 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 233.452 Jy/beam.Jy/beam 2026-03-19 09:16:32 INFO imstat:::: Statistics --- 2026-03-19 09:16:32 INFO imstat:::: -- Mean of the pixel values [mean]: -0.00045671 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- Variance of the pixel values : 0.00356204 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.0596828 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- Root mean square [rms]: 0.0596841 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- Median of the pixel values [median]: -0.00646386 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 0.0391011 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- IQR [quartile]: 0.0789052 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- First quartile [q1]: -0.0432754 Jy/beam 2026-03-19 09:16:32 INFO imstat:::: -- Third quartile [q3]: 0.0356299 Jy/beam 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:16:32 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:16:32 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 2026-03-19 09:16:32 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:16:32.018435 End time: 2026-03-19 09:16:32.036975 2026-03-19 09:16:32 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:16:32 INFO imstat::::casa ########################################## .2026-03-19 09:16:32 INFO tclean::::casa ########################################## 2026-03-19 09:16:32 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:16:32 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 ) 2026-03-19 09:16:32 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:16:32 INFO SynthesisImagerVi2::selectData MS : sim_data.ms | [Opened in readonly mode] 2026-03-19 09:16:32 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:16:32 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_orig] : 2026-03-19 09:16:32 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_orig] : 2026-03-19 09:16:33 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:16:33 INFO SynthesisImagerVi2::defineImage Shape: [2048, 2048, 1, 1] Spectral: [9.99981e+08] at [0] with increment [1e+08] 2026-03-19 09:16:33 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_orig] with ftmachine : wprojectft 2026-03-19 09:16:33 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.3842 GB. Available mem.: 10.98 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:16:33 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:16:33 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_orig] : hogbom 2026-03-19 09:16:33 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:16:33 INFO task_tclean::WPConvFunc::findConvFunction W projection using 128 planes 2026-03-19 09:16:33 INFO task_tclean::WPConvFunc::findConvFunction Using maximum possible W = 6445.78 (wavelengths) 2026-03-19 09:16:33 INFO task_tclean::WPConvFunc::findConvFunction Typical wavelength = 0.299799 (m) 2026-03-19 09:16:33 INFO task_tclean::WPConvFunc::findConvFunction Scaling in W (at maximum W) = 0.399639 wavelengths per pixel 2026-03-19 09:17:07 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 2026-03-19 09:17:07 INFO task_tclean::WPConvFunc::findConvFunction Memory used in gridding function = 14 MB from maximum 15884 MB 2026-03-19 09:17:09 INFO task_tclean::SIImageStore::calcSensitivity [im_orig] Theoretical sensitivity (Jy/bm):0.00889437 2026-03-19 09:17:10 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.087535 2026-03-19 09:17:10 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.6975 arcsec, 77.5413 arcsec, -89.6046 deg 2026-03-19 09:17:10 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 4.94899 2026-03-19 09:17:13 INFO SynthesisDeconvolver::setupMask [im_orig] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:13 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 % ] 2026-03-19 09:17:13 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 4.94899, over full image : 4.94899 2026-03-19 09:17:13 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.5971387624740601, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:13 INFO SDAlgorithmBase::deconvolve [im_orig] Run Hogbom minor-cycle | CycleThreshold=0.597139, CycleNiter=20, Gain=0.3 2026-03-19 09:17:14 INFO SDAlgorithmBase::deconvolve [im_orig] iters=0->7 [7], model=0->4.6028, peakres=4.94899->0.435227, Reached cyclethreshold. 2026-03-19 09:17:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 7 iterations. 2026-03-19 09:17:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.45574, over full image : 0.45574 2026-03-19 09:17:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 13, 'cyclethreshold': 0.05498892068862915, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:18 INFO SDAlgorithmBase::deconvolve [im_orig] Run Hogbom minor-cycle | CycleThreshold=0.0549889, CycleNiter=13, Gain=0.3 2026-03-19 09:17:19 INFO SDAlgorithmBase::deconvolve [im_orig] iters=0->7 [7], model=4.6028->5.02619, peakres=0.45574->0.0435268, Reached cyclethreshold. 2026-03-19 09:17:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 14 iterations. 2026-03-19 09:17:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0416506, over full image : 0.0416506 2026-03-19 09:17:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 6, 'cyclethreshold': 0.005025505553930998, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:24 INFO SDAlgorithmBase::deconvolve [im_orig] Run Hogbom minor-cycle | CycleThreshold=0.00502551, CycleNiter=6, Gain=0.3 2026-03-19 09:17:24 INFO SDAlgorithmBase::deconvolve [im_orig] iters=0->6 [6], model=5.02619->5.04001, peakres=0.0416506->0.0226678, Reached cycleniter. 2026-03-19 09:17:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.022671, over full image : 0.022671 2026-03-19 09:17:29 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:29 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:29 INFO SDAlgorithmBase::restore [im_orig] : Restoring model image. 2026-03-19 09:17:29 INFO SIImageStore::restore Beam for chan : 0 : 88.6975 arcsec, 77.5413 arcsec, -89.6046 deg 2026-03-19 09:17:30 INFO tclean::::casa Searching for images with prefix 'im_orig'... Found these, writing history into them: ['im_orig.psf', 'im_orig.image', 'im_orig.residual', 'im_orig.pb', 'im_orig.model', 'im_orig.sumwt', 'im_orig.mask'] 2026-03-19 09:17:30 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:16:32.376471 End time: 2026-03-19 09:17:29.797247 2026-03-19 09:17:30 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:30 INFO tclean::::casa ########################################## 2026-03-19 09:17:30 INFO imstat::::casa ########################################## 2026-03-19 09:17:30 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:30 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 ) 2026-03-19 09:17:30 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:30 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:30 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:30 INFO imstat::image::statistics Determining stats for image im_orig.image 2026-03-19 09:17:30 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:30 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) 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [2047, 2047, 0, 0] 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 20:11:05.220, +38.21.11.967, I, 999980841.3Hz 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:47:03.322, +42.54.02.996, I, 999980841.3Hz 2026-03-19 09:17:30 INFO imstat:::: Values --- 2026-03-19 09:17:30 INFO imstat:::: -- flux density [flux]: 5.2713 Jy 2026-03-19 09:17:30 INFO imstat:::: -- number of points [npts]: 4.1943e+06 2026-03-19 09:17:30 INFO imstat:::: -- maximum value [max]: 4.97713 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- minimum value [min]: -0.022671 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- position of max value (pixel) [maxpos]: [1509, 773, 0, 0] 2026-03-19 09:17:30 INFO imstat:::: -- position of min value (pixel) [minpos]: [1708, 965, 0, 0] 2026-03-19 09:17:30 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.302, +40.06.02.372, I, 999980841.3Hz 2026-03-19 09:17:30 INFO imstat:::: -- position of min value (world) [minposf]: 19:51:28.525, +40.31.07.260, I, 999980841.3Hz 2026-03-19 09:17:30 INFO imstat:::: -- Sum of pixel values [sum]: 641.87 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1619.58 Jy/beam.Jy/beam 2026-03-19 09:17:30 INFO imstat:::: Statistics --- 2026-03-19 09:17:30 INFO imstat:::: -- Mean of the pixel values [mean]: 0.000153034 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- Variance of the pixel values : 0.000386116 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.0196498 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- Root mean square [rms]: 0.0196504 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- Median of the pixel values [median]: 4.61875e-06 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 0.003161 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- IQR [quartile]: 0.00632194 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- First quartile [q1]: -0.00315521 Jy/beam 2026-03-19 09:17:30 INFO imstat:::: -- Third quartile [q3]: 0.00316673 Jy/beam 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:30 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:30 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 2026-03-19 09:17:30 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:29.799242 End time: 2026-03-19 09:17:30.134384 2026-03-19 09:17:30 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:30 INFO imstat::::casa ########################################## 2026-03-19 09:17:30 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:30 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) 2026-03-19 09:17:30 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:30 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:30 2026****** 2026-03-19 09:17:30 INFO ImageFitter::fit+ 2026-03-19 09:17:30 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:30 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_orig.image 2026-03-19 09:17:30 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:30 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:30 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:30 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:30 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:30 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:30 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:30 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) 2026-03-19 09:17:30 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29832 Jy 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.00459192 Jy 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85855 Jy 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00458731 Jy 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Fit on im_orig.image component 0 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.9885 +/- 0.0032 s (0.0367 arcsec along great circle) 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.0594 +/- 0.0281 arcsec 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- ra: 1509.4535 +/- 0.0046 pixels 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- dec: 772.7181 +/- 0.0035 pixels 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.4778 +/- 0.0014 arcmin 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.2915 +/- 0.0011 arcmin 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.42 +/- 0.26 deg 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.70 arcsec 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.54 arcsec 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- position angle: -89.60 deg 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Component is a point source 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ An upper limit on its size cannot be determined 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- Integrated: 5.0049 +/- 0.0079 Jy 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- Peak: 5.0102 +/- 0.0046 Jy/beam 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:30 INFO ImageFitter::_fitLoop+ --- frequency: 999.9808 MHz (29.97982 cm) 2026-03-19 09:17:30 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:30 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:30 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 40d06m00' ) 2026-03-19 09:17:30 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:30 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:30 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:30 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:30 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:30 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:30 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:30 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:30 INFO MSTransformManager::open Select data 2026-03-19 09:17:30 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:31 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:31 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40d06m00' successfully parsed 2026-03-19 09:17:31 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:31 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:31 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:30.312777 End time: 2026-03-19 09:17:30.805515 2026-03-19 09:17:31 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:31 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:31 INFO tclean::::casa ########################################## 2026-03-19 09:17:31 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:31 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 ) 2026-03-19 09:17:31 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:31 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:31 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:31 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:31 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:31 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:31 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:31 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:31 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:31 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:31 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:31 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:31 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:31 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010826 2026-03-19 09:17:31 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:31 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:31 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:32 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:32 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:32 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:32 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:32 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:32 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:32 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:32 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:32 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:32 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:32 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:32 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:32 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:32 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:32 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:32 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:30.950173 End time: 2026-03-19 09:17:32.369102 2026-03-19 09:17:32 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:32 INFO tclean::::casa ########################################## 2026-03-19 09:17:32 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:32 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) 2026-03-19 09:17:32 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:32 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:32 2026****** 2026-03-19 09:17:32 INFO ImageFitter::fit+ 2026-03-19 09:17:32 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:32 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:32 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:32 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:32 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:32 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:32 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:32 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:32 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:32 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) 2026-03-19 09:17:32 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:32 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:32 INFO imstat::::casa ########################################## 2026-03-19 09:17:32 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:32 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 ) 2026-03-19 09:17:32 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:32 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:32 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:32 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:32 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:32 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) 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:32 INFO imstat:::: Values --- 2026-03-19 09:17:32 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:32 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:32 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:32 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:32 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:32 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:32 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:32 INFO imstat:::: Statistics --- 2026-03-19 09:17:32 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-03-19 09:17:32 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:32 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:32 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 2026-03-19 09:17:32 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:32.427116 End time: 2026-03-19 09:17:32.450211 2026-03-19 09:17:32 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:32 INFO imstat::::casa ########################################## 2026-03-19 09:17:32 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:32 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:32 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19h53m50 02:40:24.0000' ) 2026-03-19 09:17:32 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:32 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:32 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:32 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:32 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:32 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:32 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:32 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:32 INFO MSTransformManager::open Select data 2026-03-19 09:17:32 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:33 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 ".". 2026-03-19 09:17:33 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 02:40:24.0000' successfully parsed 2026-03-19 09:17:33 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:33 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:33 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:32.465204 End time: 2026-03-19 09:17:32.823807 2026-03-19 09:17:33 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:33 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:33 INFO tclean::::casa ########################################## 2026-03-19 09:17:33 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:33 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 ) 2026-03-19 09:17:33 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:33 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:33 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:33 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:33 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:33 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:33 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:33 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:33 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:33 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:33 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:33 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:33 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:33 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010062 2026-03-19 09:17:33 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:33 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:33 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:33 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:33 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:34 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:34 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:34 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:34 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:34 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:34 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:34 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:34 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:34 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:34 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:34 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:34 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:34 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:34 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:34 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:34 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:32.842407 End time: 2026-03-19 09:17:33.999115 2026-03-19 09:17:34 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:34 INFO tclean::::casa ########################################## 2026-03-19 09:17:34 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:34 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:34 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) 2026-03-19 09:17:34 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:34 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:34 2026****** 2026-03-19 09:17:34 INFO ImageFitter::fit+ 2026-03-19 09:17:34 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:34 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:34 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:34 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:34 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:34 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:34 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:34 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:34 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:34 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:34 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) 2026-03-19 09:17:34 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:34 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:34 INFO imstat::::casa ########################################## 2026-03-19 09:17:34 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:34 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 ) 2026-03-19 09:17:34 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:34 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:34 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:34 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:34 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:34 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) 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:34 INFO imstat:::: Values --- 2026-03-19 09:17:34 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:34 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:34 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:34 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:34 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:34 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:34 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:34 INFO imstat:::: Statistics --- 2026-03-19 09:17:34 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-03-19 09:17:34 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:34 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:34 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 2026-03-19 09:17:34 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:34.038525 End time: 2026-03-19 09:17:34.056744 2026-03-19 09:17:34 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:34 INFO imstat::::casa ########################################## 2026-03-19 09:17:34 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:34 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:34 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 19h53m50 40.100000000deg' ) 2026-03-19 09:17:34 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:34 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:34 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:34 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:34 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:34 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:34 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:34 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:34 INFO MSTransformManager::open Select data 2026-03-19 09:17:34 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:34 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:34 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 40.100000000deg' successfully parsed 2026-03-19 09:17:34 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:34 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:34 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:34.068371 End time: 2026-03-19 09:17:34.418960 2026-03-19 09:17:34 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:34 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:34 INFO tclean::::casa ########################################## 2026-03-19 09:17:34 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:34 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 ) 2026-03-19 09:17:34 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:34 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:34 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:35 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:35 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:35 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:35 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:35 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:35 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:35 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:35 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:35 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:35 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:35 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011031 2026-03-19 09:17:35 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:35 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:35 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:35 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:35 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:36 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:36 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:36 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:36 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:36 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:36 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:36 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:34.437657 End time: 2026-03-19 09:17:35.629656 2026-03-19 09:17:36 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:36 INFO tclean::::casa ########################################## 2026-03-19 09:17:36 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:36 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:36 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) 2026-03-19 09:17:36 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:36 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:36 2026****** 2026-03-19 09:17:36 INFO ImageFitter::fit+ 2026-03-19 09:17:36 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:36 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:36 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:36 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:36 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:36 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:36 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:36 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:36 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:36 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:36 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) 2026-03-19 09:17:36 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:36 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:36 INFO imstat::::casa ########################################## 2026-03-19 09:17:36 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:36 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 ) 2026-03-19 09:17:36 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:36 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:36 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:36 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:36 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:36 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) 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:36 INFO imstat:::: Values --- 2026-03-19 09:17:36 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:36 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:36 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:36 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:36 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:36 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:36 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:36 INFO imstat:::: Statistics --- 2026-03-19 09:17:36 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-03-19 09:17:36 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:36 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:36 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 2026-03-19 09:17:36 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:35.666598 End time: 2026-03-19 09:17:35.683931 2026-03-19 09:17:36 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:36 INFO imstat::::casa ########################################## 2026-03-19 09:17:36 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:36 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:36 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 19h53m50 0.699877030rad' ) 2026-03-19 09:17:36 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:36 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:36 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:36 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:36 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:36 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:36 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:36 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:36 INFO MSTransformManager::open Select data 2026-03-19 09:17:36 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:36 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:36 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19h53m50 0.699877030rad' successfully parsed 2026-03-19 09:17:36 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:36 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:36 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:35.695547 End time: 2026-03-19 09:17:36.085886 2026-03-19 09:17:36 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:36 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:36 INFO tclean::::casa ########################################## 2026-03-19 09:17:36 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:36 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 ) 2026-03-19 09:17:36 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:36 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:36 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:36 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:36 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:36 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:36 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:36 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:36 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:36 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:36 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:36 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:36 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:36 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.023426 2026-03-19 09:17:36 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:36 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:36 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:37 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:37 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:37 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:17:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:38 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:38 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:38 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:38 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:38 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:38 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:36.103820 End time: 2026-03-19 09:17:37.657517 2026-03-19 09:17:38 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:38 INFO tclean::::casa ########################################## 2026-03-19 09:17:38 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:38 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:38 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) 2026-03-19 09:17:38 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:38 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:38 2026****** 2026-03-19 09:17:38 INFO ImageFitter::fit+ 2026-03-19 09:17:38 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:38 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:38 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:38 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:38 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:38 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:38 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:38 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:38 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:38 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:38 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) 2026-03-19 09:17:38 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126486 Jy 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:38 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:38 INFO imstat::::casa ########################################## 2026-03-19 09:17:38 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:38 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 ) 2026-03-19 09:17:38 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:38 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:38 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:38 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:38 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:38 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) 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:38 INFO imstat:::: Values --- 2026-03-19 09:17:38 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:38 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:38 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- minimum value [min]: -7.77764e-05 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:38 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:17:38 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:38 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:17:38 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:38 INFO imstat:::: Statistics --- 2026-03-19 09:17:38 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- Median of the pixel values [median]: -1.86664e-05 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- IQR [quartile]: 3.56255e-05 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- First quartile [q1]: -3.45078e-05 Jy/beam 2026-03-19 09:17:38 INFO imstat:::: -- Third quartile [q3]: 1.11764e-06 Jy/beam 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:38 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:38 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 2026-03-19 09:17:38 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:37.719311 End time: 2026-03-19 09:17:37.743200 2026-03-19 09:17:38 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:38 INFO imstat::::casa ########################################## 2026-03-19 09:17:38 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:38 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:38 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 19:53:50.0000 40d06m00' ) 2026-03-19 09:17:38 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:38 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:38 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:38 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:38 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:38 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:38 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:38 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:38 INFO MSTransformManager::open Select data 2026-03-19 09:17:38 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:38 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:38 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19:53:50.0000 40d06m00' successfully parsed 2026-03-19 09:17:38 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:38 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:38 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:37.758135 End time: 2026-03-19 09:17:38.175819 2026-03-19 09:17:38 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:38 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:38 INFO tclean::::casa ########################################## 2026-03-19 09:17:38 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:38 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 ) 2026-03-19 09:17:38 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:38 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:38 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:38 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:38 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:38 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:38 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:38 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:38 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:38 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:38 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:38 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:38 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:38 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010481 2026-03-19 09:17:38 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:38 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:39 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:39 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:39 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:39 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:39 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:39 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:39 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:39 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:39 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:39 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:39 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:39 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:40 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:38.192508 End time: 2026-03-19 09:17:39.510114 2026-03-19 09:17:40 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:40 INFO tclean::::casa ########################################## 2026-03-19 09:17:40 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:40 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:40 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) 2026-03-19 09:17:40 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:40 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:40 2026****** 2026-03-19 09:17:40 INFO ImageFitter::fit+ 2026-03-19 09:17:40 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:40 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:40 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:40 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:40 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:40 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:40 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:40 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:40 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:40 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:40 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) 2026-03-19 09:17:40 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:40 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:40 INFO imstat::::casa ########################################## 2026-03-19 09:17:40 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:40 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 ) 2026-03-19 09:17:40 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:40 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:40 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:40 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:40 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:40 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) 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:40 INFO imstat:::: Values --- 2026-03-19 09:17:40 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:40 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:40 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:40 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:40 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:40 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:40 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:40 INFO imstat:::: Statistics --- 2026-03-19 09:17:40 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-03-19 09:17:40 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:40 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:40 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 2026-03-19 09:17:40 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:39.574102 End time: 2026-03-19 09:17:39.598333 2026-03-19 09:17:40 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:40 INFO imstat::::casa ########################################## 2026-03-19 09:17:40 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:40 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:40 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 19:53:50.0000 02:40:24.0000' ) 2026-03-19 09:17:40 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:40 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:40 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:40 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:40 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:40 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:40 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:40 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:40 INFO MSTransformManager::open Select data 2026-03-19 09:17:40 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:40 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 ".". 2026-03-19 09:17:40 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19:53:50.0000 02:40:24.0000' successfully parsed 2026-03-19 09:17:40 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:40 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:40 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:39.613496 End time: 2026-03-19 09:17:40.018793 2026-03-19 09:17:40 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:40 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:40 INFO tclean::::casa ########################################## 2026-03-19 09:17:40 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:40 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 ) 2026-03-19 09:17:40 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:40 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:40 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:40 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:40 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:40 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:40 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:40 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:40 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:40 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:40 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:40 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:40 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:40 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.022155 2026-03-19 09:17:40 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:40 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:41 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:41 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:41 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:41 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:41 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:41 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:41 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:41 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:41 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:41 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:41 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:41 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:41 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:40.037986 End time: 2026-03-19 09:17:41.271968 2026-03-19 09:17:41 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:41 INFO tclean::::casa ########################################## 2026-03-19 09:17:41 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:41 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:41 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) 2026-03-19 09:17:41 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:41 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:41 2026****** 2026-03-19 09:17:41 INFO ImageFitter::fit+ 2026-03-19 09:17:41 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:41 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:41 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:41 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:41 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:41 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:41 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:41 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:41 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:41 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:41 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) 2026-03-19 09:17:41 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:41 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:41 INFO imstat::::casa ########################################## 2026-03-19 09:17:41 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:41 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 ) 2026-03-19 09:17:41 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:41 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:41 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:41 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:41 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:41 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) 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:41 INFO imstat:::: Values --- 2026-03-19 09:17:41 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:41 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:41 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:41 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:41 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:41 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:41 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:41 INFO imstat:::: Statistics --- 2026-03-19 09:17:41 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-03-19 09:17:41 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:41 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:41 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 2026-03-19 09:17:41 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:41.312407 End time: 2026-03-19 09:17:41.331823 2026-03-19 09:17:41 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:41 INFO imstat::::casa ########################################## 2026-03-19 09:17:41 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:41 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:41 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19:53:50.0000 40.100000000deg' ) 2026-03-19 09:17:41 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:41 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:41 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:41 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:41 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:41 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:41 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:41 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:41 INFO MSTransformManager::open Select data 2026-03-19 09:17:41 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:42 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:42 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19:53:50.0000 40.100000000deg' successfully parsed 2026-03-19 09:17:42 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:42 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:42 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:41.344422 End time: 2026-03-19 09:17:41.666401 2026-03-19 09:17:42 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:42 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:42 INFO tclean::::casa ########################################## 2026-03-19 09:17:42 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:42 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 ) 2026-03-19 09:17:42 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:42 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:42 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:42 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:42 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:42 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:42 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:42 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:42 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:42 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:42 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:42 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:42 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:42 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.009851 2026-03-19 09:17:42 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:42 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:42 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:42 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:42 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:43 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:43 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:43 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:43 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:43 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:43 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:43 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:43 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:43 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:43 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:43 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:43 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:41.683171 End time: 2026-03-19 09:17:43.044088 2026-03-19 09:17:43 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:43 INFO tclean::::casa ########################################## 2026-03-19 09:17:43 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:43 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:43 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) 2026-03-19 09:17:43 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:43 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:43 2026****** 2026-03-19 09:17:43 INFO ImageFitter::fit+ 2026-03-19 09:17:43 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:43 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:43 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:43 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:43 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:43 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:43 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:43 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:43 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:43 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:43 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) 2026-03-19 09:17:43 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126491 Jy 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:43 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:43 INFO imstat::::casa ########################################## 2026-03-19 09:17:43 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:43 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 ) 2026-03-19 09:17:43 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:43 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:43 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:43 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:43 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:43 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) 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:43 INFO imstat:::: Values --- 2026-03-19 09:17:43 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:43 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:43 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- minimum value [min]: -7.77766e-05 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:43 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:43 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:43 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:43 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:43 INFO imstat:::: Statistics --- 2026-03-19 09:17:43 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- Median of the pixel values [median]: -1.86645e-05 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73581e-05 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- IQR [quartile]: 3.56193e-05 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- First quartile [q1]: -3.45066e-05 Jy/beam 2026-03-19 09:17:43 INFO imstat:::: -- Third quartile [q3]: 1.11276e-06 Jy/beam 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:43 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:43 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 2026-03-19 09:17:43 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:43.087466 End time: 2026-03-19 09:17:43.107497 2026-03-19 09:17:43 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:43 INFO imstat::::casa ########################################## 2026-03-19 09:17:43 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:43 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:43 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 19:53:50.0000 0.699877030rad' ) 2026-03-19 09:17:43 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:43 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:43 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:43 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:43 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:43 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:43 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:43 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:43 INFO MSTransformManager::open Select data 2026-03-19 09:17:43 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:43 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:43 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 19:53:50.0000 0.699877030rad' successfully parsed 2026-03-19 09:17:43 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:44 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:44 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:43.121459 End time: 2026-03-19 09:17:43.542974 2026-03-19 09:17:44 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:44 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:44 INFO tclean::::casa ########################################## 2026-03-19 09:17:44 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:44 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 ) 2026-03-19 09:17:44 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:44 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:44 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:44 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:44 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:44 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:44 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:44 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:44 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:44 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:44 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:44 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:44 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:44 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010778 2026-03-19 09:17:44 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:44 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:44 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:44 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:44 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:45 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:45 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:17:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:45 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:45 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:45 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:45 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:45 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:45 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:45 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:45 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:45 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:43.560903 End time: 2026-03-19 09:17:44.889077 2026-03-19 09:17:45 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:45 INFO tclean::::casa ########################################## 2026-03-19 09:17:45 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:45 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:45 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) 2026-03-19 09:17:45 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:45 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:45 2026****** 2026-03-19 09:17:45 INFO ImageFitter::fit+ 2026-03-19 09:17:45 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:45 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:45 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:45 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:45 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:45 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:45 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:45 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:45 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:45 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:45 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) 2026-03-19 09:17:45 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126486 Jy 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:45 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:45 INFO imstat::::casa ########################################## 2026-03-19 09:17:45 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:45 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 ) 2026-03-19 09:17:45 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:45 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:45 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:45 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:45 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:45 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) 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:45 INFO imstat:::: Values --- 2026-03-19 09:17:45 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:45 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:45 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- minimum value [min]: -7.77764e-05 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:45 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:17:45 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:45 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:17:45 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:45 INFO imstat:::: Statistics --- 2026-03-19 09:17:45 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- Median of the pixel values [median]: -1.86664e-05 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- IQR [quartile]: 3.56255e-05 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- First quartile [q1]: -3.45078e-05 Jy/beam 2026-03-19 09:17:45 INFO imstat:::: -- Third quartile [q3]: 1.11764e-06 Jy/beam 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:45 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:45 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 2026-03-19 09:17:45 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:44.929031 End time: 2026-03-19 09:17:44.948205 2026-03-19 09:17:45 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:45 INFO imstat::::casa ########################################## 2026-03-19 09:17:45 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:45 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:45 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 298.458333333deg 40d06m00' ) 2026-03-19 09:17:45 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:45 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:45 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:45 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:45 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:45 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:45 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:45 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:45 INFO MSTransformManager::open Select data 2026-03-19 09:17:45 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:45 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:45 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 298.458333333deg 40d06m00' successfully parsed 2026-03-19 09:17:45 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:45 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:45 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:44.960357 End time: 2026-03-19 09:17:45.395256 2026-03-19 09:17:45 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:45 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:45 INFO tclean::::casa ########################################## 2026-03-19 09:17:45 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:45 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 ) 2026-03-19 09:17:45 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:45 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:45 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:46 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:46 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:46 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:46 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:46 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:46 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:46 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:46 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:46 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:46 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:46 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010551 2026-03-19 09:17:46 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:46 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:46 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:46 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:46 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:17:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:47 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:47 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:47 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:47 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:47 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:47 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:47 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:47 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:47 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:45.412865 End time: 2026-03-19 09:17:46.811561 2026-03-19 09:17:47 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:47 INFO tclean::::casa ########################################## 2026-03-19 09:17:47 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:47 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:47 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) 2026-03-19 09:17:47 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:47 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:47 2026****** 2026-03-19 09:17:47 INFO ImageFitter::fit+ 2026-03-19 09:17:47 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:47 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:47 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:47 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:47 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:47 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:47 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:47 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:47 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:47 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:47 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) 2026-03-19 09:17:47 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:47 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:47 INFO imstat::::casa ########################################## 2026-03-19 09:17:47 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:47 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 ) 2026-03-19 09:17:47 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:47 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:47 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:47 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:47 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:47 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) 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:47 INFO imstat:::: Values --- 2026-03-19 09:17:47 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:47 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:47 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- minimum value [min]: -7.77758e-05 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:47 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:47 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:47 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:47 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:47 INFO imstat:::: Statistics --- 2026-03-19 09:17:47 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- Median of the pixel values [median]: -1.86641e-05 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- IQR [quartile]: 3.56208e-05 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- First quartile [q1]: -3.45075e-05 Jy/beam 2026-03-19 09:17:47 INFO imstat:::: -- Third quartile [q3]: 1.11336e-06 Jy/beam 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:47 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:47 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 2026-03-19 09:17:47 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:46.866527 End time: 2026-03-19 09:17:46.889617 2026-03-19 09:17:47 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:47 INFO imstat::::casa ########################################## 2026-03-19 09:17:47 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:47 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:47 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='J2000 298.458333333deg 02:40:24.0000' ) 2026-03-19 09:17:47 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:47 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:47 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:47 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:47 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:47 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:47 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:47 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:47 INFO MSTransformManager::open Select data 2026-03-19 09:17:47 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:47 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 ".". 2026-03-19 09:17:47 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 298.458333333deg 02:40:24.0000' successfully parsed 2026-03-19 09:17:47 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:47 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:47 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:46.901905 End time: 2026-03-19 09:17:47.347856 2026-03-19 09:17:47 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:47 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:47 INFO tclean::::casa ########################################## 2026-03-19 09:17:47 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:47 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 ) 2026-03-19 09:17:47 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:47 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:47 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:47 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:47 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:48 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:48 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:48 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:48 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:48 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:48 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:48 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:48 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:48 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010365 2026-03-19 09:17:48 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:48 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:48 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:48 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:48 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:17:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:49 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:49 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:49 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:49 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:49 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:49 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:47.378366 End time: 2026-03-19 09:17:48.717832 2026-03-19 09:17:49 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:49 INFO tclean::::casa ########################################## 2026-03-19 09:17:49 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:49 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:49 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) 2026-03-19 09:17:49 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:49 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:49 2026****** 2026-03-19 09:17:49 INFO ImageFitter::fit+ 2026-03-19 09:17:49 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:49 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:49 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:49 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:49 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:49 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:49 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:49 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:49 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:49 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:49 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) 2026-03-19 09:17:49 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:49 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:49 INFO imstat::::casa ########################################## 2026-03-19 09:17:49 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:49 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 ) 2026-03-19 09:17:49 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:49 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:49 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:49 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:49 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:49 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) 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:49 INFO imstat:::: Values --- 2026-03-19 09:17:49 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:49 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:49 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- minimum value [min]: -7.77758e-05 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:49 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:49 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:49 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:49 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:49 INFO imstat:::: Statistics --- 2026-03-19 09:17:49 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- Median of the pixel values [median]: -1.86641e-05 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- IQR [quartile]: 3.56208e-05 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- First quartile [q1]: -3.45075e-05 Jy/beam 2026-03-19 09:17:49 INFO imstat:::: -- Third quartile [q3]: 1.11336e-06 Jy/beam 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:49 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:49 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 2026-03-19 09:17:49 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:48.788378 End time: 2026-03-19 09:17:48.814815 2026-03-19 09:17:49 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:49 INFO imstat::::casa ########################################## 2026-03-19 09:17:49 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:49 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:49 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' ) 2026-03-19 09:17:49 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:49 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:49 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:49 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:49 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:49 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:49 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:49 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:49 INFO MSTransformManager::open Select data 2026-03-19 09:17:49 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:49 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:49 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 298.458333333deg 40.100000000deg' successfully parsed 2026-03-19 09:17:49 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:49 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:49 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:48.830638 End time: 2026-03-19 09:17:49.261134 2026-03-19 09:17:49 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:49 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:49 INFO tclean::::casa ########################################## 2026-03-19 09:17:49 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:49 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 ) 2026-03-19 09:17:49 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:49 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:49 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:50 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:50 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:50 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:50 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:50 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:50 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:50 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:50 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:50 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:50 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:50 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01646 2026-03-19 09:17:50 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:50 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:50 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:50 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:50 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:50 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:50 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:50 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:50 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:50 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:51 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:51 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:17:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:51 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:51 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:51 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:51 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:51 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:51 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:51 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:49.398723 End time: 2026-03-19 09:17:51.111433 2026-03-19 09:17:51 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:51 INFO tclean::::casa ########################################## 2026-03-19 09:17:51 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:51 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:51 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) 2026-03-19 09:17:51 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:51 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:51 2026****** 2026-03-19 09:17:51 INFO ImageFitter::fit+ 2026-03-19 09:17:51 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:51 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:51 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:51 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:51 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:51 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:51 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:51 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:51 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:51 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:51 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) 2026-03-19 09:17:51 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:51 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:51 INFO imstat::::casa ########################################## 2026-03-19 09:17:51 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:51 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 ) 2026-03-19 09:17:51 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:51 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:51 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:51 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:51 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:51 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) 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:51 INFO imstat:::: Values --- 2026-03-19 09:17:51 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:51 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:51 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- minimum value [min]: -7.77758e-05 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:51 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:51 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:51 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:51 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:51 INFO imstat:::: Statistics --- 2026-03-19 09:17:51 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- Median of the pixel values [median]: -1.86641e-05 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7358e-05 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- IQR [quartile]: 3.56208e-05 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- First quartile [q1]: -3.45075e-05 Jy/beam 2026-03-19 09:17:51 INFO imstat:::: -- Third quartile [q3]: 1.11336e-06 Jy/beam 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:51 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:51 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 2026-03-19 09:17:51 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:51.184959 End time: 2026-03-19 09:17:51.212616 2026-03-19 09:17:51 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:51 INFO imstat::::casa ########################################## 2026-03-19 09:17:51 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:51 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:51 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' ) 2026-03-19 09:17:51 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:51 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:51 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:51 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:51 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:51 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:51 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:51 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:51 INFO MSTransformManager::open Select data 2026-03-19 09:17:51 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:51 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:51 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 298.458333333deg 0.699877030rad' successfully parsed 2026-03-19 09:17:51 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:52 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:52 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:51.229244 End time: 2026-03-19 09:17:51.708482 2026-03-19 09:17:52 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:52 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:52 INFO tclean::::casa ########################################## 2026-03-19 09:17:52 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:52 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 ) 2026-03-19 09:17:52 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:52 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:52 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:52 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:52 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:52 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:52 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:52 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:52 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:52 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:52 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:52 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:52 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:52 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.019382 2026-03-19 09:17:52 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:52 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:52 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:52 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:52 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:52 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:53 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:53 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:53 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:53 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:53 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:17:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:53 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:53 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:53 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:53 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:53 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:53 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:53 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:51.739872 End time: 2026-03-19 09:17:53.136884 2026-03-19 09:17:53 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:53 INFO tclean::::casa ########################################## 2026-03-19 09:17:53 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:53 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:53 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) 2026-03-19 09:17:53 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:53 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:53 2026****** 2026-03-19 09:17:53 INFO ImageFitter::fit+ 2026-03-19 09:17:53 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:53 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:53 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:53 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:53 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:53 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:53 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:53 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:53 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:53 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:53 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) 2026-03-19 09:17:53 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126487 Jy 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- ra: 128.000000 +/- 0.000127 pixels 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:53 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:53 INFO imstat::::casa ########################################## 2026-03-19 09:17:53 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:53 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 ) 2026-03-19 09:17:53 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:53 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:53 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:53 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:53 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:53 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) 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:53 INFO imstat:::: Values --- 2026-03-19 09:17:53 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:53 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:53 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- minimum value [min]: -7.77738e-05 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:53 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:17:53 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:53 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:17:53 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:53 INFO imstat:::: Statistics --- 2026-03-19 09:17:53 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- Median of the pixel values [median]: -1.86662e-05 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73577e-05 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- IQR [quartile]: 3.56242e-05 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- First quartile [q1]: -3.45075e-05 Jy/beam 2026-03-19 09:17:53 INFO imstat:::: -- Third quartile [q3]: 1.11673e-06 Jy/beam 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:53 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:53 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 2026-03-19 09:17:53 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:53.177719 End time: 2026-03-19 09:17:53.197025 2026-03-19 09:17:53 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:53 INFO imstat::::casa ########################################## 2026-03-19 09:17:53 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:53 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:53 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' ) 2026-03-19 09:17:53 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:53 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:53 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:53 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:53 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:53 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:53 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:53 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:53 INFO MSTransformManager::open Select data 2026-03-19 09:17:53 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:53 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:53 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 5.209080597rad 40d06m00' successfully parsed 2026-03-19 09:17:53 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:54 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:54 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:53.209040 End time: 2026-03-19 09:17:53.607553 2026-03-19 09:17:54 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:54 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:54 INFO tclean::::casa ########################################## 2026-03-19 09:17:54 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:54 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 ) 2026-03-19 09:17:54 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:54 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:54 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:54 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:54 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:54 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:54 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:54 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:54 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:54 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:54 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:54 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:54 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:54 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.016971 2026-03-19 09:17:54 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:54 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:54 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:54 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:54 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:55 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:55 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:55 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:55 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:55 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:55 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:55 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:55 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:55 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:55 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:55 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:55 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:55 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:55 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:55 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:53.625959 End time: 2026-03-19 09:17:55.012798 2026-03-19 09:17:55 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:55 INFO tclean::::casa ########################################## 2026-03-19 09:17:55 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:55 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:55 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) 2026-03-19 09:17:55 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:55 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:55 2026****** 2026-03-19 09:17:55 INFO ImageFitter::fit+ 2026-03-19 09:17:55 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:55 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:55 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:55 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:55 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:55 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:55 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:55 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:55 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:55 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:55 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) 2026-03-19 09:17:55 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:55 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:55 INFO imstat::::casa ########################################## 2026-03-19 09:17:55 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:55 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 ) 2026-03-19 09:17:55 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:55 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:55 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:55 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:55 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:55 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) 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:55 INFO imstat:::: Values --- 2026-03-19 09:17:55 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:55 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:55 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- minimum value [min]: -7.77801e-05 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:55 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:17:55 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:55 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:17:55 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:55 INFO imstat:::: Statistics --- 2026-03-19 09:17:55 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- Median of the pixel values [median]: -1.86723e-05 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73614e-05 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- IQR [quartile]: 3.55964e-05 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- First quartile [q1]: -3.45025e-05 Jy/beam 2026-03-19 09:17:55 INFO imstat:::: -- Third quartile [q3]: 1.09391e-06 Jy/beam 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:55 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:55 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 2026-03-19 09:17:55 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:55.063794 End time: 2026-03-19 09:17:55.082995 2026-03-19 09:17:55 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:55 INFO imstat::::casa ########################################## 2026-03-19 09:17:55 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:55 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:55 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' ) 2026-03-19 09:17:55 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:55 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:55 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:55 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:55 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:55 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:55 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:55 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:55 INFO MSTransformManager::open Select data 2026-03-19 09:17:55 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:55 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 ".". 2026-03-19 09:17:55 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 5.209080597rad 02:40:24.0000' successfully parsed 2026-03-19 09:17:55 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:55 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:55 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:55.094898 End time: 2026-03-19 09:17:55.494553 2026-03-19 09:17:55 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:55 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:56 INFO tclean::::casa ########################################## 2026-03-19 09:17:56 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:56 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 ) 2026-03-19 09:17:56 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:56 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:56 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:56 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:56 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:56 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:56 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:56 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:56 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:56 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:56 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:56 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:56 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:56 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.021036 2026-03-19 09:17:56 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:56 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:56 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:56 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:56 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:57 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:57 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:57 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:57 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:57 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:57 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:57 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:57 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:57 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:57 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:55.513339 End time: 2026-03-19 09:17:57.080668 2026-03-19 09:17:57 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:57 INFO tclean::::casa ########################################## 2026-03-19 09:17:57 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:57 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:57 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) 2026-03-19 09:17:57 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:57 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:57 2026****** 2026-03-19 09:17:57 INFO ImageFitter::fit+ 2026-03-19 09:17:57 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:57 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:57 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:57 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:57 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:57 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:57 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:57 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:57 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:57 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:57 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) 2026-03-19 09:17:57 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:57 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:57 INFO imstat::::casa ########################################## 2026-03-19 09:17:57 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:57 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 ) 2026-03-19 09:17:57 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:57 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:57 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:57 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:57 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:57 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) 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:57 INFO imstat:::: Values --- 2026-03-19 09:17:57 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:57 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:57 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- minimum value [min]: -7.77801e-05 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:57 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:17:57 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:57 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:17:57 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:57 INFO imstat:::: Statistics --- 2026-03-19 09:17:57 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- Median of the pixel values [median]: -1.86723e-05 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73614e-05 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- IQR [quartile]: 3.55964e-05 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- First quartile [q1]: -3.45025e-05 Jy/beam 2026-03-19 09:17:57 INFO imstat:::: -- Third quartile [q3]: 1.09391e-06 Jy/beam 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:57 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:57 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 2026-03-19 09:17:57 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:57.138092 End time: 2026-03-19 09:17:57.168777 2026-03-19 09:17:57 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:57 INFO imstat::::casa ########################################## 2026-03-19 09:17:57 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:57 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:57 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' ) 2026-03-19 09:17:57 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:57 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:57 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:57 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:57 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:17:57 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:17:57 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:17:57 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:17:57 INFO MSTransformManager::open Select data 2026-03-19 09:17:57 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:17:57 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:17:57 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 5.209080597rad 40.100000000deg' successfully parsed 2026-03-19 09:17:57 INFO phaseshift::::casa Shift phase center 2026-03-19 09:17:58 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:17:58 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:57.191659 End time: 2026-03-19 09:17:57.664226 2026-03-19 09:17:58 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:17:58 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:58 INFO tclean::::casa ########################################## 2026-03-19 09:17:58 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:17:58 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 ) 2026-03-19 09:17:58 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:17:58 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:17:58 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:17:58 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:58 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:17:58 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:17:58 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:17:58 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:17:58 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:17:58 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:17:58 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:17:58 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:17:58 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:17:58 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.019333 2026-03-19 09:17:58 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:58 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:17:58 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:17:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:17:58 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:17:58 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:17:58 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:17:58 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:17:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:17:58 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:17:58 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:17:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:17:59 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:17:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:17:59 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:17:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:17:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:17:59 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:17:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:17:59 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:17:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:17:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:17:59 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:17:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:17:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:17:59 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:17:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:17:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:17:59 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:17:59 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:17:59 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:17:59 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:17:59 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:17:59 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:57.699432 End time: 2026-03-19 09:17:59.365098 2026-03-19 09:17:59 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:17:59 INFO tclean::::casa ########################################## 2026-03-19 09:17:59 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:17:59 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:59 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) 2026-03-19 09:17:59 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:17:59 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:17:59 2026****** 2026-03-19 09:17:59 INFO ImageFitter::fit+ 2026-03-19 09:17:59 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:17:59 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:17:59 INFO ImageFitter::fit+ --- region: 2026-03-19 09:17:59 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:17:59 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:17:59 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:17:59 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:17:59 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:17:59 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:17:59 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:59 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) 2026-03-19 09:17:59 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000001 +/- 0.000777 arcsec 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- dec: 128.000000 +/- 0.000097 pixels 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:17:59 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:17:59 INFO imstat::::casa ########################################## 2026-03-19 09:17:59 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:17:59 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 ) 2026-03-19 09:17:59 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:17:59 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:17:59 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:17:59 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:17:59 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:17:59 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) 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:17:59 INFO imstat:::: Values --- 2026-03-19 09:17:59 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:17:59 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:17:59 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- minimum value [min]: -7.77801e-05 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:17:59 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:17:59 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:17:59 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:17:59 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:17:59 INFO imstat:::: Statistics --- 2026-03-19 09:17:59 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- Median of the pixel values [median]: -1.86723e-05 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73614e-05 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- IQR [quartile]: 3.55964e-05 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- First quartile [q1]: -3.45025e-05 Jy/beam 2026-03-19 09:17:59 INFO imstat:::: -- Third quartile [q3]: 1.09391e-06 Jy/beam 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:17:59 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:17:59 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 2026-03-19 09:17:59 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:17:59.435442 End time: 2026-03-19 09:17:59.461128 2026-03-19 09:17:59 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:17:59 INFO imstat::::casa ########################################## 2026-03-19 09:17:59 INFO phaseshift::::casa ########################################## 2026-03-19 09:17:59 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:17:59 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' ) 2026-03-19 09:17:59 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:17:59 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:17:59 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:17:59 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:17:59 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:00 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:00 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:00 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:00 INFO MSTransformManager::open Select data 2026-03-19 09:18:00 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:00 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:00 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'J2000 5.209080597rad 0.699877030rad' successfully parsed 2026-03-19 09:18:00 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:00 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:00 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:17:59.476429 End time: 2026-03-19 09:17:59.921701 2026-03-19 09:18:00 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:00 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:00 INFO tclean::::casa ########################################## 2026-03-19 09:18:00 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:00 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 ) 2026-03-19 09:18:00 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:00 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:00 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:00 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:00 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:00 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:00 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:00 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:00 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:00 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:00 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:00 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:00 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:00 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.016106 2026-03-19 09:18:00 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:00 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:00 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:00 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:00 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:01 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:01 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:01 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:01 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:01 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:01 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:01 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:01 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:01 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:01 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:01 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:01 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:01 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:01 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:01 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:01 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:01 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:17:59.939644 End time: 2026-03-19 09:18:01.481538 2026-03-19 09:18:01 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:01 INFO tclean::::casa ########################################## 2026-03-19 09:18:01 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:02 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:02 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) 2026-03-19 09:18:02 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:02 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:02 2026****** 2026-03-19 09:18:02 INFO ImageFitter::fit+ 2026-03-19 09:18:02 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:02 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:02 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:02 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:02 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:02 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:02 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:02 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:02 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:02 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:02 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) 2026-03-19 09:18:02 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126484 Jy 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:02 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:02 INFO imstat::::casa ########################################## 2026-03-19 09:18:02 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:02 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 ) 2026-03-19 09:18:02 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:02 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:02 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:02 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:02 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:02 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) 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:02 INFO imstat:::: Values --- 2026-03-19 09:18:02 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:02 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:02 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- minimum value [min]: -7.77793e-05 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:02 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:18:02 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:02 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:18:02 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:02 INFO imstat:::: Statistics --- 2026-03-19 09:18:02 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- Median of the pixel values [median]: -1.86714e-05 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73592e-05 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- IQR [quartile]: 3.55982e-05 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- First quartile [q1]: -3.45035e-05 Jy/beam 2026-03-19 09:18:02 INFO imstat:::: -- Third quartile [q3]: 1.09469e-06 Jy/beam 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:02 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:02 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 2026-03-19 09:18:02 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:01.554462 End time: 2026-03-19 09:18:01.582259 2026-03-19 09:18:02 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:02 INFO imstat::::casa ########################################## 2026-03-19 09:18:02 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:02 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:02 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19h53m49.9980 40d06m0.0019' ) 2026-03-19 09:18:02 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:02 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:02 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:02 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:02 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:02 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:02 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:02 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:02 INFO MSTransformManager::open Select data 2026-03-19 09:18:02 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:02 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:02 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m49.9980 40d06m0.0019' successfully parsed 2026-03-19 09:18:02 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:02 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:02 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:01.599649 End time: 2026-03-19 09:18:02.035267 2026-03-19 09:18:02 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:02 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:02 INFO tclean::::casa ########################################## 2026-03-19 09:18:02 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:02 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 ) 2026-03-19 09:18:02 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:02 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:02 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:02 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:02 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:02 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:02 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:02 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:02 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:02 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:02 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:02 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:02 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:02 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.019758 2026-03-19 09:18:02 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:02 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:03 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:03 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:03 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:03 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:03 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:03 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:03 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:03 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:03 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:03 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:03 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:03 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:03 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:03 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:03 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:03 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:03 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:03 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:04 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:04 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:04 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:02.065867 End time: 2026-03-19 09:18:03.683886 2026-03-19 09:18:04 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:04 INFO tclean::::casa ########################################## 2026-03-19 09:18:04 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:04 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:04 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) 2026-03-19 09:18:04 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:04 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:04 2026****** 2026-03-19 09:18:04 INFO ImageFitter::fit+ 2026-03-19 09:18:04 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:04 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:04 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:04 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:04 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:04 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:04 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:04 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:04 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:04 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:04 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) 2026-03-19 09:18:04 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:04 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:04 INFO imstat::::casa ########################################## 2026-03-19 09:18:04 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:04 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 ) 2026-03-19 09:18:04 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:04 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:04 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:04 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:04 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:04 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) 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:04 INFO imstat:::: Values --- 2026-03-19 09:18:04 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:04 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:04 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:04 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:04 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:04 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:04 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:04 INFO imstat:::: Statistics --- 2026-03-19 09:18:04 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- Median of the pixel values [median]: -1.86712e-05 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73636e-05 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- IQR [quartile]: 3.56293e-05 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- First quartile [q1]: -3.45095e-05 Jy/beam 2026-03-19 09:18:04 INFO imstat:::: -- Third quartile [q3]: 1.1198e-06 Jy/beam 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:04 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:04 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 2026-03-19 09:18:04 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:03.751329 End time: 2026-03-19 09:18:03.779020 2026-03-19 09:18:04 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:04 INFO imstat::::casa ########################################## 2026-03-19 09:18:04 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:04 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:04 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 19h53m49.9980 02:40:24.0001' ) 2026-03-19 09:18:04 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:04 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:04 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:04 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:04 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:04 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:04 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:04 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:04 INFO MSTransformManager::open Select data 2026-03-19 09:18:04 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:04 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 ".". 2026-03-19 09:18:04 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m49.9980 02:40:24.0001' successfully parsed 2026-03-19 09:18:04 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:04 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:04 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:03.791540 End time: 2026-03-19 09:18:04.228840 2026-03-19 09:18:04 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:04 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:04 INFO tclean::::casa ########################################## 2026-03-19 09:18:04 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:04 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 ) 2026-03-19 09:18:04 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:04 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:04 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:04 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:04 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:04 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:04 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:04 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:04 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:04 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:04 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:04 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:05 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:05 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.021421 2026-03-19 09:18:05 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:05 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:05 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:05 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:05 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:05 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:05 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:05 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:05 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:05 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:05 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:05 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:05 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:05 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:05 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:06 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:06 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:06 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:06 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:06 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:06 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:04.262108 End time: 2026-03-19 09:18:05.866084 2026-03-19 09:18:06 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:06 INFO tclean::::casa ########################################## 2026-03-19 09:18:06 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:06 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:06 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) 2026-03-19 09:18:06 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:06 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:06 2026****** 2026-03-19 09:18:06 INFO ImageFitter::fit+ 2026-03-19 09:18:06 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:06 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:06 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:06 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:06 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:06 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:06 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:06 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:06 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:06 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:06 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) 2026-03-19 09:18:06 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116891 Jy 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126504 Jy 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999957 +/- 0.000777 arcsec 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- dec: 128.000047 +/- 0.000097 pixels 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:06 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:06 INFO imstat::::casa ########################################## 2026-03-19 09:18:06 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:06 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 ) 2026-03-19 09:18:06 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:06 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:06 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:06 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:06 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:06 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) 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:06 INFO imstat:::: Values --- 2026-03-19 09:18:06 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:06 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:06 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- minimum value [min]: -7.78094e-05 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:06 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:18:06 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:06 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.659, I, 999981612.9Hz 2026-03-19 09:18:06 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:06 INFO imstat:::: Statistics --- 2026-03-19 09:18:06 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- Median of the pixel values [median]: -1.86846e-05 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73901e-05 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- IQR [quartile]: 3.56505e-05 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- First quartile [q1]: -3.45202e-05 Jy/beam 2026-03-19 09:18:06 INFO imstat:::: -- Third quartile [q3]: 1.13024e-06 Jy/beam 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:06 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:06 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 2026-03-19 09:18:06 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:05.940093 End time: 2026-03-19 09:18:05.968702 2026-03-19 09:18:06 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:06 INFO imstat::::casa ########################################## 2026-03-19 09:18:06 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:06 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:06 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19h53m49.9980 40.100000528deg' ) 2026-03-19 09:18:06 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:06 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:06 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:06 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:06 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:06 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:06 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:06 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:06 INFO MSTransformManager::open Select data 2026-03-19 09:18:06 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:06 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:06 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m49.9980 40.100000528deg' successfully parsed 2026-03-19 09:18:06 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:06 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:06 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:05.985324 End time: 2026-03-19 09:18:06.430988 2026-03-19 09:18:06 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:06 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:06 INFO tclean::::casa ########################################## 2026-03-19 09:18:06 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:06 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 ) 2026-03-19 09:18:06 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:06 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:06 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:07 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:07 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:07 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:07 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:07 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:07 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:07 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:07 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:07 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:07 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:07 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010591 2026-03-19 09:18:07 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:07 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:07 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:07 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:07 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:07 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:07 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:07 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:07 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:07 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:07 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:07 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:07 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:07 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:08 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:08 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:08 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:08 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:08 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:08 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:06.466677 End time: 2026-03-19 09:18:07.919022 2026-03-19 09:18:08 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:08 INFO tclean::::casa ########################################## 2026-03-19 09:18:08 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:08 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:08 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) 2026-03-19 09:18:08 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:08 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:08 2026****** 2026-03-19 09:18:08 INFO ImageFitter::fit+ 2026-03-19 09:18:08 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:08 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:08 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:08 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:08 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:08 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:08 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:08 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:08 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:08 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:08 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) 2026-03-19 09:18:08 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116876 Jy 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:08 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:08 INFO imstat::::casa ########################################## 2026-03-19 09:18:08 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:08 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 ) 2026-03-19 09:18:08 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:08 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:08 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:08 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:08 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:08 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) 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:08 INFO imstat:::: Values --- 2026-03-19 09:18:08 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:08 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:08 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:08 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:08 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:08 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:08 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:08 INFO imstat:::: Statistics --- 2026-03-19 09:18:08 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73637e-05 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- IQR [quartile]: 3.56311e-05 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- First quartile [q1]: -3.45119e-05 Jy/beam 2026-03-19 09:18:08 INFO imstat:::: -- Third quartile [q3]: 1.11928e-06 Jy/beam 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:08 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:08 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 2026-03-19 09:18:08 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:08.000229 End time: 2026-03-19 09:18:08.029276 2026-03-19 09:18:08 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:08 INFO imstat::::casa ########################################## 2026-03-19 09:18:08 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:08 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:08 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 19h53m49.9980 0.699877039rad' ) 2026-03-19 09:18:08 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:08 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:08 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:08 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:08 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:08 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:08 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:08 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:08 INFO MSTransformManager::open Select data 2026-03-19 09:18:08 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:08 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:08 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19h53m49.9980 0.699877039rad' successfully parsed 2026-03-19 09:18:08 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:09 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:09 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:08.047232 End time: 2026-03-19 09:18:08.507422 2026-03-19 09:18:09 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:09 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:09 INFO tclean::::casa ########################################## 2026-03-19 09:18:09 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:09 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 ) 2026-03-19 09:18:09 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:09 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:09 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:09 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:09 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:09 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:09 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:09 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:09 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:09 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:09 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:09 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:09 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:09 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.016143 2026-03-19 09:18:09 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:09 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:09 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:09 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:09 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:09 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:09 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:09 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:10 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:10 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:10 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:10 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:10 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:10 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:08.525540 End time: 2026-03-19 09:18:09.744323 2026-03-19 09:18:10 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:10 INFO tclean::::casa ########################################## 2026-03-19 09:18:10 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:10 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:10 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) 2026-03-19 09:18:10 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:10 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:10 2026****** 2026-03-19 09:18:10 INFO ImageFitter::fit+ 2026-03-19 09:18:10 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:10 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:10 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:10 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:10 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:10 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:10 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:10 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:10 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:10 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:10 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) 2026-03-19 09:18:10 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999992 +/- 0.000777 arcsec 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- dec: 128.000009 +/- 0.000097 pixels 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:10 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:10 INFO imstat::::casa ########################################## 2026-03-19 09:18:10 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:10 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 ) 2026-03-19 09:18:10 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:10 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:10 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:10 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:10 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:10 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) 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:10 INFO imstat:::: Values --- 2026-03-19 09:18:10 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:10 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:10 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- minimum value [min]: -7.77867e-05 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:10 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:10 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:10 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:10 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:10 INFO imstat:::: Statistics --- 2026-03-19 09:18:10 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- Median of the pixel values [median]: -1.86761e-05 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73623e-05 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- IQR [quartile]: 3.56319e-05 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- First quartile [q1]: -3.45153e-05 Jy/beam 2026-03-19 09:18:10 INFO imstat:::: -- Third quartile [q3]: 1.11659e-06 Jy/beam 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:10 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:10 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 2026-03-19 09:18:10 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:09.782729 End time: 2026-03-19 09:18:09.801428 2026-03-19 09:18:10 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:10 INFO imstat::::casa ########################################## 2026-03-19 09:18:10 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:10 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:10 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 19:53:49.9980 40d06m0.0019' ) 2026-03-19 09:18:10 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:10 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:10 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:10 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:10 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:10 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:10 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:10 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:10 INFO MSTransformManager::open Select data 2026-03-19 09:18:10 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:10 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:10 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19:53:49.9980 40d06m0.0019' successfully parsed 2026-03-19 09:18:10 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:10 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:10 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:09.812635 End time: 2026-03-19 09:18:10.237432 2026-03-19 09:18:10 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:10 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:10 INFO tclean::::casa ########################################## 2026-03-19 09:18:10 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:10 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 ) 2026-03-19 09:18:10 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:10 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:10 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:10 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:10 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:10 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:10 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:10 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:10 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:10 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:10 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:10 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:10 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:10 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010123 2026-03-19 09:18:10 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:10 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:11 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:11 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:11 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:11 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:11 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:11 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:11 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:11 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:11 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:11 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:11 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:11 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:11 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:10.254314 End time: 2026-03-19 09:18:11.413076 2026-03-19 09:18:11 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:11 INFO tclean::::casa ########################################## 2026-03-19 09:18:11 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:11 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:11 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) 2026-03-19 09:18:11 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:11 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:11 2026****** 2026-03-19 09:18:11 INFO ImageFitter::fit+ 2026-03-19 09:18:11 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:11 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:11 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:11 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:11 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:11 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:11 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:11 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:11 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:11 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:11 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) 2026-03-19 09:18:11 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:11 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:11 INFO imstat::::casa ########################################## 2026-03-19 09:18:11 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:11 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 ) 2026-03-19 09:18:11 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:11 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:11 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:11 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:11 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:11 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) 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:11 INFO imstat:::: Values --- 2026-03-19 09:18:11 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:11 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:11 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:11 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:11 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:11 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:11 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:11 INFO imstat:::: Statistics --- 2026-03-19 09:18:11 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- Median of the pixel values [median]: -1.86712e-05 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73636e-05 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- IQR [quartile]: 3.56293e-05 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- First quartile [q1]: -3.45095e-05 Jy/beam 2026-03-19 09:18:11 INFO imstat:::: -- Third quartile [q3]: 1.1198e-06 Jy/beam 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:11 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:11 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 2026-03-19 09:18:12 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:11.475810 End time: 2026-03-19 09:18:11.500189 2026-03-19 09:18:12 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:12 INFO imstat::::casa ########################################## 2026-03-19 09:18:12 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:12 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:12 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' ) 2026-03-19 09:18:12 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:12 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:12 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:12 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:12 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:12 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:12 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:12 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:12 INFO MSTransformManager::open Select data 2026-03-19 09:18:12 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:12 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 ".". 2026-03-19 09:18:12 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19:53:49.9980 02:40:24.0001' successfully parsed 2026-03-19 09:18:12 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:12 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:12 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:11.515224 End time: 2026-03-19 09:18:11.876320 2026-03-19 09:18:12 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:12 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:12 INFO tclean::::casa ########################################## 2026-03-19 09:18:12 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:12 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 ) 2026-03-19 09:18:12 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:12 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:12 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:12 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:12 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:12 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:12 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:12 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:12 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:12 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:12 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:12 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:12 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:12 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.014995 2026-03-19 09:18:12 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:12 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:12 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:12 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:12 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:12 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:13 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:13 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:13 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:13 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:13 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:13 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:13 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:13 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:13 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:13 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:13 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:13 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:11.894003 End time: 2026-03-19 09:18:13.281959 2026-03-19 09:18:13 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:13 INFO tclean::::casa ########################################## 2026-03-19 09:18:13 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:13 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:13 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) 2026-03-19 09:18:13 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:13 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:13 2026****** 2026-03-19 09:18:13 INFO ImageFitter::fit+ 2026-03-19 09:18:13 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:13 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:13 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:13 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:13 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:13 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:13 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:13 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:13 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:13 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:13 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) 2026-03-19 09:18:13 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116891 Jy 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126504 Jy 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999957 +/- 0.000777 arcsec 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- dec: 128.000047 +/- 0.000097 pixels 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:13 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:13 INFO imstat::::casa ########################################## 2026-03-19 09:18:13 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:13 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 ) 2026-03-19 09:18:13 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:13 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:13 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:13 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:13 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:13 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) 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:13 INFO imstat:::: Values --- 2026-03-19 09:18:13 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:13 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:13 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- minimum value [min]: -7.78094e-05 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:13 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:18:13 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:13 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.659, I, 999981612.9Hz 2026-03-19 09:18:13 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:13 INFO imstat:::: Statistics --- 2026-03-19 09:18:13 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- Median of the pixel values [median]: -1.86846e-05 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73901e-05 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- IQR [quartile]: 3.56505e-05 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- First quartile [q1]: -3.45202e-05 Jy/beam 2026-03-19 09:18:13 INFO imstat:::: -- Third quartile [q3]: 1.13024e-06 Jy/beam 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:13 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:13 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 2026-03-19 09:18:13 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:13.325054 End time: 2026-03-19 09:18:13.344331 2026-03-19 09:18:13 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:13 INFO imstat::::casa ########################################## 2026-03-19 09:18:13 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:13 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:13 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 19:53:49.9980 40.100000528deg' ) 2026-03-19 09:18:13 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:13 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:13 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:13 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:13 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:13 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:13 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:13 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:13 INFO MSTransformManager::open Select data 2026-03-19 09:18:13 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:14 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:14 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19:53:49.9980 40.100000528deg' successfully parsed 2026-03-19 09:18:14 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:14 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:14 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:13.355837 End time: 2026-03-19 09:18:13.740085 2026-03-19 09:18:14 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:14 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:14 INFO tclean::::casa ########################################## 2026-03-19 09:18:14 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:14 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 ) 2026-03-19 09:18:14 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:14 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:14 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:14 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:14 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:14 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:14 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:14 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:14 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:14 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:14 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:14 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:14 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:14 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.014122 2026-03-19 09:18:14 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:14 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:14 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:14 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:14 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:14 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:15 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:15 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:15 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:15 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:15 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:15 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:13.756453 End time: 2026-03-19 09:18:15.083344 2026-03-19 09:18:15 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:15 INFO tclean::::casa ########################################## 2026-03-19 09:18:15 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:15 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:15 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) 2026-03-19 09:18:15 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:15 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:15 2026****** 2026-03-19 09:18:15 INFO ImageFitter::fit+ 2026-03-19 09:18:15 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:15 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:15 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:15 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:15 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:15 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:15 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:15 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:15 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:15 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:15 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) 2026-03-19 09:18:15 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116876 Jy 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:15 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:15 INFO imstat::::casa ########################################## 2026-03-19 09:18:15 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:15 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 ) 2026-03-19 09:18:15 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:15 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:15 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:15 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:15 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:15 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) 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:15 INFO imstat:::: Values --- 2026-03-19 09:18:15 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:15 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:15 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:15 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:15 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:15 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:15 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:15 INFO imstat:::: Statistics --- 2026-03-19 09:18:15 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73637e-05 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- IQR [quartile]: 3.56311e-05 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- First quartile [q1]: -3.45119e-05 Jy/beam 2026-03-19 09:18:15 INFO imstat:::: -- Third quartile [q3]: 1.11928e-06 Jy/beam 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:15 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:15 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 2026-03-19 09:18:15 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:15.123944 End time: 2026-03-19 09:18:15.142773 2026-03-19 09:18:15 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:15 INFO imstat::::casa ########################################## 2026-03-19 09:18:15 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:15 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:15 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 19:53:49.9980 0.699877039rad' ) 2026-03-19 09:18:15 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:15 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:15 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:15 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:15 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:15 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:15 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:15 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:15 INFO MSTransformManager::open Select data 2026-03-19 09:18:15 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:15 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:15 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 19:53:49.9980 0.699877039rad' successfully parsed 2026-03-19 09:18:15 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:15 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:15 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:15.154180 End time: 2026-03-19 09:18:15.498845 2026-03-19 09:18:15 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:15 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:16 INFO tclean::::casa ########################################## 2026-03-19 09:18:16 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:16 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 ) 2026-03-19 09:18:16 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:16 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:16 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:16 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:16 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:16 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:16 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:16 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:16 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:16 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:16 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:16 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:16 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:16 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010561 2026-03-19 09:18:16 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:16 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:16 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:16 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:16 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:16 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:16 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:16 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:16 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:17 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:17 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:17 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:17 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:17 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:17 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:15.516356 End time: 2026-03-19 09:18:16.700672 2026-03-19 09:18:17 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:17 INFO tclean::::casa ########################################## 2026-03-19 09:18:17 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:17 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:17 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) 2026-03-19 09:18:17 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:17 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:17 2026****** 2026-03-19 09:18:17 INFO ImageFitter::fit+ 2026-03-19 09:18:17 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:17 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:17 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:17 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:17 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:17 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:17 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:17 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:17 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:17 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:17 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) 2026-03-19 09:18:17 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999992 +/- 0.000777 arcsec 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- dec: 128.000009 +/- 0.000097 pixels 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:17 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:17 INFO imstat::::casa ########################################## 2026-03-19 09:18:17 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:17 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 ) 2026-03-19 09:18:17 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:17 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:17 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:17 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:17 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:17 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) 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:17 INFO imstat:::: Values --- 2026-03-19 09:18:17 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:17 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:17 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- minimum value [min]: -7.77867e-05 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:17 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:17 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:17 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:17 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:17 INFO imstat:::: Statistics --- 2026-03-19 09:18:17 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- Median of the pixel values [median]: -1.86761e-05 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73623e-05 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- IQR [quartile]: 3.56319e-05 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- First quartile [q1]: -3.45153e-05 Jy/beam 2026-03-19 09:18:17 INFO imstat:::: -- Third quartile [q3]: 1.11659e-06 Jy/beam 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:17 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:17 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 2026-03-19 09:18:17 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:16.739826 End time: 2026-03-19 09:18:16.758241 2026-03-19 09:18:17 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:17 INFO imstat::::casa ########################################## 2026-03-19 09:18:17 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:17 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:17 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 298.458325000deg 40d06m0.0019' ) 2026-03-19 09:18:17 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:17 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:17 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:17 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:17 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:17 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:17 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:17 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:17 INFO MSTransformManager::open Select data 2026-03-19 09:18:17 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:17 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:17 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 298.458325000deg 40d06m0.0019' successfully parsed 2026-03-19 09:18:17 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:17 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:17 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:16.769999 End time: 2026-03-19 09:18:17.203351 2026-03-19 09:18:17 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:17 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:17 INFO tclean::::casa ########################################## 2026-03-19 09:18:17 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:17 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 ) 2026-03-19 09:18:17 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:17 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:17 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:17 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:17 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:17 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:17 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:17 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:17 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:17 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:17 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:17 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:18 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:18 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013617 2026-03-19 09:18:18 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:18 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:18 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:18 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:18 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:18 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:18 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:18 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:18 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:18 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:18 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:17.222316 End time: 2026-03-19 09:18:18.472379 2026-03-19 09:18:18 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:18 INFO tclean::::casa ########################################## 2026-03-19 09:18:18 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:18 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:18 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) 2026-03-19 09:18:18 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:18 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:18 2026****** 2026-03-19 09:18:18 INFO ImageFitter::fit+ 2026-03-19 09:18:18 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:18 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:18 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:18 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:18 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:18 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:18 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:18 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:18 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:18 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:18 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) 2026-03-19 09:18:19 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:19 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:19 INFO imstat::::casa ########################################## 2026-03-19 09:18:19 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:19 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 ) 2026-03-19 09:18:19 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:19 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:19 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:19 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:19 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:19 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) 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:19 INFO imstat:::: Values --- 2026-03-19 09:18:19 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:19 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:19 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:19 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:19 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:19 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:19 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:19 INFO imstat:::: Statistics --- 2026-03-19 09:18:19 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- Median of the pixel values [median]: -1.86712e-05 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73636e-05 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- IQR [quartile]: 3.56293e-05 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- First quartile [q1]: -3.45095e-05 Jy/beam 2026-03-19 09:18:19 INFO imstat:::: -- Third quartile [q3]: 1.1198e-06 Jy/beam 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:19 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:19 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 2026-03-19 09:18:19 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:18.513435 End time: 2026-03-19 09:18:18.532444 2026-03-19 09:18:19 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:19 INFO imstat::::casa ########################################## 2026-03-19 09:18:19 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:19 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:19 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 298.458325000deg 02:40:24.0001' ) 2026-03-19 09:18:19 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:19 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:19 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:19 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:19 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:19 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:19 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:19 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:19 INFO MSTransformManager::open Select data 2026-03-19 09:18:19 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:19 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 ".". 2026-03-19 09:18:19 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 298.458325000deg 02:40:24.0001' successfully parsed 2026-03-19 09:18:19 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:19 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:19 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:18.543958 End time: 2026-03-19 09:18:18.886624 2026-03-19 09:18:19 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:19 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:19 INFO tclean::::casa ########################################## 2026-03-19 09:18:19 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:19 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 ) 2026-03-19 09:18:19 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:19 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:19 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:19 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:19 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:19 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:19 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:19 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:19 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:19 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:19 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:19 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:19 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:19 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.015752 2026-03-19 09:18:19 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:19 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:19 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:19 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:19 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:20 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:20 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:20 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:20 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:20 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:20 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:18.903882 End time: 2026-03-19 09:18:20.182552 2026-03-19 09:18:20 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:20 INFO tclean::::casa ########################################## 2026-03-19 09:18:20 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:20 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:20 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) 2026-03-19 09:18:20 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:20 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:20 2026****** 2026-03-19 09:18:20 INFO ImageFitter::fit+ 2026-03-19 09:18:20 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:20 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:20 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:20 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:20 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:20 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:20 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:20 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:20 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:20 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:20 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) 2026-03-19 09:18:20 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116891 Jy 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126504 Jy 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999957 +/- 0.000777 arcsec 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- dec: 128.000047 +/- 0.000097 pixels 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:20 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:20 INFO imstat::::casa ########################################## 2026-03-19 09:18:20 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:20 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 ) 2026-03-19 09:18:20 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:20 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:20 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:20 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:20 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:20 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) 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:20 INFO imstat:::: Values --- 2026-03-19 09:18:20 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:20 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:20 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- minimum value [min]: -7.78094e-05 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:20 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:18:20 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:20 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.659, I, 999981612.9Hz 2026-03-19 09:18:20 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:20 INFO imstat:::: Statistics --- 2026-03-19 09:18:20 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- Median of the pixel values [median]: -1.86846e-05 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73901e-05 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- IQR [quartile]: 3.56505e-05 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- First quartile [q1]: -3.45202e-05 Jy/beam 2026-03-19 09:18:20 INFO imstat:::: -- Third quartile [q3]: 1.13024e-06 Jy/beam 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:20 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:20 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 2026-03-19 09:18:20 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:20.223001 End time: 2026-03-19 09:18:20.242807 2026-03-19 09:18:20 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:20 INFO imstat::::casa ########################################## 2026-03-19 09:18:20 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:20 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:20 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 298.458325000deg 40.100000528deg' ) 2026-03-19 09:18:20 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:20 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:20 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:20 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:20 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:20 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:20 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:20 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:20 INFO MSTransformManager::open Select data 2026-03-19 09:18:20 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:20 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:20 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 298.458325000deg 40.100000528deg' successfully parsed 2026-03-19 09:18:20 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:21 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:21 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:20.254585 End time: 2026-03-19 09:18:20.615323 2026-03-19 09:18:21 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:21 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:21 INFO tclean::::casa ########################################## 2026-03-19 09:18:21 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:21 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 ) 2026-03-19 09:18:21 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:21 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:21 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:21 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:21 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:21 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:21 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:21 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:21 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:21 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:21 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:21 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:21 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:21 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.012017 2026-03-19 09:18:21 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:21 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:21 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:21 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:21 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:21 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:21 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:21 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:21 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:22 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:22 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:22 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:22 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:22 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:22 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:20.632356 End time: 2026-03-19 09:18:21.978632 2026-03-19 09:18:22 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:22 INFO tclean::::casa ########################################## 2026-03-19 09:18:22 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:22 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:22 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) 2026-03-19 09:18:22 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:22 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:22 2026****** 2026-03-19 09:18:22 INFO ImageFitter::fit+ 2026-03-19 09:18:22 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:22 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:22 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:22 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:22 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:22 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:22 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:22 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:22 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:22 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:22 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) 2026-03-19 09:18:22 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116876 Jy 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:22 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:22 INFO imstat::::casa ########################################## 2026-03-19 09:18:22 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:22 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 ) 2026-03-19 09:18:22 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:22 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:22 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:22 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:22 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:22 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) 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:22 INFO imstat:::: Values --- 2026-03-19 09:18:22 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:22 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:22 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- minimum value [min]: -7.77954e-05 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:22 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:22 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:22 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:22 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:22 INFO imstat:::: Statistics --- 2026-03-19 09:18:22 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73637e-05 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- IQR [quartile]: 3.56311e-05 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- First quartile [q1]: -3.45119e-05 Jy/beam 2026-03-19 09:18:22 INFO imstat:::: -- Third quartile [q3]: 1.11928e-06 Jy/beam 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:22 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:22 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 2026-03-19 09:18:22 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:22.018798 End time: 2026-03-19 09:18:22.038297 2026-03-19 09:18:22 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:22 INFO imstat::::casa ########################################## 2026-03-19 09:18:22 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:22 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:22 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 298.458325000deg 0.699877039rad' ) 2026-03-19 09:18:22 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:22 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:22 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:22 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:22 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:22 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:22 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:22 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:22 INFO MSTransformManager::open Select data 2026-03-19 09:18:22 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:22 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:22 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 298.458325000deg 0.699877039rad' successfully parsed 2026-03-19 09:18:22 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:22 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:22 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:22.050133 End time: 2026-03-19 09:18:22.382991 2026-03-19 09:18:22 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:22 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:22 INFO tclean::::casa ########################################## 2026-03-19 09:18:22 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:22 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 ) 2026-03-19 09:18:22 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:22 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:22 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:22 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:22 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:22 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:22 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:22 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:22 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:23 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:23 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:23 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:23 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:23 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.018991 2026-03-19 09:18:23 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:23 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:23 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:23 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:23 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:23 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:23 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:23 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:23 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:24 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:24 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:24 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:24 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:24 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:24 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:22.400552 End time: 2026-03-19 09:18:23.746450 2026-03-19 09:18:24 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:24 INFO tclean::::casa ########################################## 2026-03-19 09:18:24 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:24 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:24 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) 2026-03-19 09:18:24 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:24 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:24 2026****** 2026-03-19 09:18:24 INFO ImageFitter::fit+ 2026-03-19 09:18:24 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:24 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:24 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:24 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:24 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:24 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:24 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:24 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:24 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:24 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:24 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) 2026-03-19 09:18:24 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012649 Jy 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999992 +/- 0.000777 arcsec 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- ra: 127.999970 +/- 0.000127 pixels 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- dec: 128.000009 +/- 0.000097 pixels 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:24 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:24 INFO imstat::::casa ########################################## 2026-03-19 09:18:24 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:24 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 ) 2026-03-19 09:18:24 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:24 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:24 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:24 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:24 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:24 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) 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:24 INFO imstat:::: Values --- 2026-03-19 09:18:24 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:24 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:24 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- minimum value [min]: -7.77867e-05 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:24 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:24 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:24 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:24 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:24 INFO imstat:::: Statistics --- 2026-03-19 09:18:24 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- Median of the pixel values [median]: -1.86761e-05 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73623e-05 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- IQR [quartile]: 3.56319e-05 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- First quartile [q1]: -3.45153e-05 Jy/beam 2026-03-19 09:18:24 INFO imstat:::: -- Third quartile [q3]: 1.11659e-06 Jy/beam 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:24 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:24 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 2026-03-19 09:18:24 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:23.810010 End time: 2026-03-19 09:18:23.834125 2026-03-19 09:18:24 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:24 INFO imstat::::casa ########################################## 2026-03-19 09:18:24 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:24 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:24 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 40d06m0.0019' ) 2026-03-19 09:18:24 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:24 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:24 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:24 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:24 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:24 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:24 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:24 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:24 INFO MSTransformManager::open Select data 2026-03-19 09:18:24 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:24 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:24 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 5.209080451rad 40d06m0.0019' successfully parsed 2026-03-19 09:18:24 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:24 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:24 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:23.848340 End time: 2026-03-19 09:18:24.242373 2026-03-19 09:18:24 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:24 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:24 INFO tclean::::casa ########################################## 2026-03-19 09:18:24 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:24 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 ) 2026-03-19 09:18:24 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:24 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:24 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:24 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:24 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:24 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:24 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:24 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:24 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:24 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:24 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:24 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:24 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:25 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.016185 2026-03-19 09:18:25 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:25 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:25 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:25 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:25 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:26 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:26 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:26 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:26 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:26 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:26 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:24.259454 End time: 2026-03-19 09:18:25.827862 2026-03-19 09:18:26 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:26 INFO tclean::::casa ########################################## 2026-03-19 09:18:26 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:26 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:26 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) 2026-03-19 09:18:26 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:26 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:26 2026****** 2026-03-19 09:18:26 INFO ImageFitter::fit+ 2026-03-19 09:18:26 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:26 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:26 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:26 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:26 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:26 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:26 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:26 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:26 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:26 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:26 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) 2026-03-19 09:18:26 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116878 Jy 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126494 Jy 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999997 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- ra: 127.999966 +/- 0.000127 pixels 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:26 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:26 INFO imstat::::casa ########################################## 2026-03-19 09:18:26 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:26 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 ) 2026-03-19 09:18:26 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:26 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:26 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:26 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:26 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:26 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) 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:26 INFO imstat:::: Values --- 2026-03-19 09:18:26 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:26 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:26 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- minimum value [min]: -7.77984e-05 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:26 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:26 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:26 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:26 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:26 INFO imstat:::: Statistics --- 2026-03-19 09:18:26 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- Median of the pixel values [median]: -1.86704e-05 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7365e-05 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- IQR [quartile]: 3.56348e-05 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- First quartile [q1]: -3.45131e-05 Jy/beam 2026-03-19 09:18:26 INFO imstat:::: -- Third quartile [q3]: 1.12172e-06 Jy/beam 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:26 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:26 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 2026-03-19 09:18:26 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:25.894358 End time: 2026-03-19 09:18:25.919464 2026-03-19 09:18:26 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:26 INFO imstat::::casa ########################################## 2026-03-19 09:18:26 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:26 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:26 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 5.209080451rad 02:40:24.0001' ) 2026-03-19 09:18:26 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:26 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:26 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:26 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:26 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:26 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:26 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:26 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:26 INFO MSTransformManager::open Select data 2026-03-19 09:18:26 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:26 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:40:24.0001" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-03-19 09:18:26 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 5.209080451rad 02:40:24.0001' successfully parsed 2026-03-19 09:18:26 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:26 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:26 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:25.934675 End time: 2026-03-19 09:18:26.376113 2026-03-19 09:18:26 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:26 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:26 INFO tclean::::casa ########################################## 2026-03-19 09:18:26 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:26 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 ) 2026-03-19 09:18:26 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:26 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:26 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:27 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:27 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:27 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:27 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:27 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:27 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:27 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:27 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:27 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:27 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:27 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011878 2026-03-19 09:18:27 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:27 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:27 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:27 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:27 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:28 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:28 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:28 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:28 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:28 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:28 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:28 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:26.411416 End time: 2026-03-19 09:18:27.779248 2026-03-19 09:18:28 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:28 INFO tclean::::casa ########################################## 2026-03-19 09:18:28 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:28 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:28 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) 2026-03-19 09:18:28 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:28 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:28 2026****** 2026-03-19 09:18:28 INFO ImageFitter::fit+ 2026-03-19 09:18:28 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:28 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:28 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:28 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:28 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:28 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:28 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:28 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:28 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:28 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:28 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) 2026-03-19 09:18:28 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116894 Jy 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126508 Jy 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999996 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999957 +/- 0.000777 arcsec 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- ra: 127.999966 +/- 0.000127 pixels 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- dec: 128.000047 +/- 0.000097 pixels 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:28 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:28 INFO imstat::::casa ########################################## 2026-03-19 09:18:28 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:28 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 ) 2026-03-19 09:18:28 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:28 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:28 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:28 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:28 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:28 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) 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:28 INFO imstat:::: Values --- 2026-03-19 09:18:28 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:28 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:28 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- minimum value [min]: -7.78076e-05 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:28 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:18:28 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:28 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.659, I, 999981612.9Hz 2026-03-19 09:18:28 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:28 INFO imstat:::: Statistics --- 2026-03-19 09:18:28 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- Median of the pixel values [median]: -1.86848e-05 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73951e-05 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- IQR [quartile]: 3.56676e-05 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- First quartile [q1]: -3.45186e-05 Jy/beam 2026-03-19 09:18:28 INFO imstat:::: -- Third quartile [q3]: 1.14894e-06 Jy/beam 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:28 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:28 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 2026-03-19 09:18:28 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:27.820083 End time: 2026-03-19 09:18:27.839554 2026-03-19 09:18:28 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:28 INFO imstat::::casa ########################################## 2026-03-19 09:18:28 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:28 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:28 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 5.209080451rad 40.100000528deg' ) 2026-03-19 09:18:28 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:28 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:28 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:28 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:28 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:28 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:28 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:28 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:28 INFO MSTransformManager::open Select data 2026-03-19 09:18:28 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:28 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:28 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 5.209080451rad 40.100000528deg' successfully parsed 2026-03-19 09:18:28 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:28 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:28 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:27.851310 End time: 2026-03-19 09:18:28.267692 2026-03-19 09:18:28 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:28 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:28 INFO tclean::::casa ########################################## 2026-03-19 09:18:28 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:28 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 ) 2026-03-19 09:18:28 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:28 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:28 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:28 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:28 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:28 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:28 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:28 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:28 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:28 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:29 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:29 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010596 2026-03-19 09:18:29 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:29 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:29 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:30 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:30 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:30 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:30 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:30 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:30 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:30 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:30 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:30 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:30 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:28.285255 End time: 2026-03-19 09:18:29.866078 2026-03-19 09:18:30 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:30 INFO tclean::::casa ########################################## 2026-03-19 09:18:30 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:30 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) 2026-03-19 09:18:30 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:30 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:30 2026****** 2026-03-19 09:18:30 INFO ImageFitter::fit+ 2026-03-19 09:18:30 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:30 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:30 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:30 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:30 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:30 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:30 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:30 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:30 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:30 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) 2026-03-19 09:18:30 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116882 Jy 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126496 Jy 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999996 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999998 +/- 0.000777 arcsec 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- ra: 127.999966 +/- 0.000127 pixels 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- dec: 128.000003 +/- 0.000097 pixels 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:30 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:30 INFO imstat::::casa ########################################## 2026-03-19 09:18:30 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:30 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 ) 2026-03-19 09:18:30 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:30 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:30 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:30 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:30 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:30 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) 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:30 INFO imstat:::: Values --- 2026-03-19 09:18:30 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:30 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:30 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- minimum value [min]: -7.77982e-05 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:30 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:30 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:30 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:30 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:30 INFO imstat:::: Statistics --- 2026-03-19 09:18:30 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- Median of the pixel values [median]: -1.86711e-05 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73646e-05 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- IQR [quartile]: 3.56367e-05 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- First quartile [q1]: -3.45138e-05 Jy/beam 2026-03-19 09:18:30 INFO imstat:::: -- Third quartile [q3]: 1.12291e-06 Jy/beam 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:30 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:30 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 2026-03-19 09:18:30 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:29.923644 End time: 2026-03-19 09:18:29.946842 2026-03-19 09:18:30 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:30 INFO imstat::::casa ########################################## 2026-03-19 09:18:30 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:30 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:30 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='ICRS 5.209080451rad 0.699877039rad' ) 2026-03-19 09:18:30 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:30 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:30 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:30 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:30 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:30 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:30 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:30 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:30 INFO MSTransformManager::open Select data 2026-03-19 09:18:30 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:30 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:30 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'ICRS 5.209080451rad 0.699877039rad' successfully parsed 2026-03-19 09:18:30 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:30 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:30 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:29.960748 End time: 2026-03-19 09:18:30.387004 2026-03-19 09:18:30 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:30 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:30 INFO tclean::::casa ########################################## 2026-03-19 09:18:30 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:30 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 ) 2026-03-19 09:18:30 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:30 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:30 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:31 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:31 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:31 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:31 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:31 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:31 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:31 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:31 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:31 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010691 2026-03-19 09:18:31 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:31 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:31 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374443277716637, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852561634033918, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:31 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:31 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:31 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:32 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:32 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:32 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:30.403869 End time: 2026-03-19 09:18:31.673551 2026-03-19 09:18:32 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:32 INFO tclean::::casa ########################################## 2026-03-19 09:18:32 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:32 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) 2026-03-19 09:18:32 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:32 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:32 2026****** 2026-03-19 09:18:32 INFO ImageFitter::fit+ 2026-03-19 09:18:32 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:32 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:32 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:32 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:32 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:32 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:32 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:32 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:32 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:32 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) 2026-03-19 09:18:32 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116879 Jy 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126495 Jy 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999996 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- dec: +040.05.59.999992 +/- 0.000777 arcsec 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- ra: 127.999966 +/- 0.000127 pixels 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- dec: 128.000009 +/- 0.000097 pixels 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:32 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:32 INFO imstat::::casa ########################################## 2026-03-19 09:18:32 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:32 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 ) 2026-03-19 09:18:32 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:32 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:32 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:32 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:32 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:32 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) 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:32 INFO imstat:::: Values --- 2026-03-19 09:18:32 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:32 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:32 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- minimum value [min]: -7.77898e-05 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:32 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:32 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:32 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.660, I, 999981612.9Hz 2026-03-19 09:18:32 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:32 INFO imstat:::: Statistics --- 2026-03-19 09:18:32 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- Median of the pixel values [median]: -1.86769e-05 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73662e-05 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- IQR [quartile]: 3.5634e-05 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- First quartile [q1]: -3.45153e-05 Jy/beam 2026-03-19 09:18:32 INFO imstat:::: -- Third quartile [q3]: 1.1187e-06 Jy/beam 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:32 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:32 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 2026-03-19 09:18:32 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:31.756972 End time: 2026-03-19 09:18:31.785830 2026-03-19 09:18:32 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:32 INFO imstat::::casa ########################################## 2026-03-19 09:18:32 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:32 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:32 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 +006d21m09.7433' ) 2026-03-19 09:18:32 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:32 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:32 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:32 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:32 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:32 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:32 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:32 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:32 INFO MSTransformManager::open Select data 2026-03-19 09:18:32 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:32 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:32 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05h00m21.5326 +006d21m09.7433' successfully parsed 2026-03-19 09:18:32 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:32 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:32 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:31.803148 End time: 2026-03-19 09:18:32.243112 2026-03-19 09:18:32 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:32 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:32 INFO tclean::::casa ########################################## 2026-03-19 09:18:32 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:32 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 ) 2026-03-19 09:18:32 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:32 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:32 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:32 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:32 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:32 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:32 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:32 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:32 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:32 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:32 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:32 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:32 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:32 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010978 2026-03-19 09:18:32 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:33 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:33 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:33 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:33 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:33 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:33 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:33 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:33 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:33 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:33 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:33 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:33 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:34 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:34 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:34 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:32.261038 End time: 2026-03-19 09:18:33.628887 2026-03-19 09:18:34 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:34 INFO tclean::::casa ########################################## 2026-03-19 09:18:34 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:34 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:34 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) 2026-03-19 09:18:34 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:34 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:34 2026****** 2026-03-19 09:18:34 INFO ImageFitter::fit+ 2026-03-19 09:18:34 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:34 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:34 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:34 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:34 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:34 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:34 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:34 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:34 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:34 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:34 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) 2026-03-19 09:18:34 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116868 Jy 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126484 Jy 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:34 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:34 INFO imstat::::casa ########################################## 2026-03-19 09:18:34 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:34 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 ) 2026-03-19 09:18:34 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:34 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:34 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:34 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:34 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:34 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) 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:34 INFO imstat:::: Values --- 2026-03-19 09:18:34 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:34 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:34 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- minimum value [min]: -7.77795e-05 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:34 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:34 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:34 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:34 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:34 INFO imstat:::: Statistics --- 2026-03-19 09:18:34 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- Median of the pixel values [median]: -1.86702e-05 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73612e-05 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- IQR [quartile]: 3.56029e-05 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- First quartile [q1]: -3.45082e-05 Jy/beam 2026-03-19 09:18:34 INFO imstat:::: -- Third quartile [q3]: 1.09472e-06 Jy/beam 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:34 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:34 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 2026-03-19 09:18:34 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:33.669702 End time: 2026-03-19 09:18:33.689532 2026-03-19 09:18:34 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:34 INFO imstat::::casa ########################################## 2026-03-19 09:18:34 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:34 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:34 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 05h00m21.5326 00:25:24.6496' ) 2026-03-19 09:18:34 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:34 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:34 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:34 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:34 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:34 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:34 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:34 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:34 INFO MSTransformManager::open Select data 2026-03-19 09:18:34 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:34 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 ".". 2026-03-19 09:18:34 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05h00m21.5326 00:25:24.6496' successfully parsed 2026-03-19 09:18:34 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:34 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:34 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:33.701807 End time: 2026-03-19 09:18:34.060169 2026-03-19 09:18:34 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:34 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:34 INFO tclean::::casa ########################################## 2026-03-19 09:18:34 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:34 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 ) 2026-03-19 09:18:34 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:34 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:34 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:34 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:34 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:34 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:34 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:34 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:34 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:34 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:34 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:34 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:34 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:34 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010834 2026-03-19 09:18:34 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:34 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:34 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:34 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:35 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:35 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:35 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:35 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:35 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:35 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:35 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:35 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:35 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:35 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:35 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:35 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:35 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:35 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:34.077114 End time: 2026-03-19 09:18:35.332559 2026-03-19 09:18:35 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:35 INFO tclean::::casa ########################################## 2026-03-19 09:18:35 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:35 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:35 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) 2026-03-19 09:18:35 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:35 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:35 2026****** 2026-03-19 09:18:35 INFO ImageFitter::fit+ 2026-03-19 09:18:35 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:35 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:35 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:35 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:35 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:35 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:35 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:35 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:35 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:35 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:35 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) 2026-03-19 09:18:35 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116907 Jy 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012652 Jy 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999994 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000038 +/- 0.000777 arcsec 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- ra: 127.999939 +/- 0.000127 pixels 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- dec: 127.999957 +/- 0.000097 pixels 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:35 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:35 INFO imstat::::casa ########################################## 2026-03-19 09:18:35 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:35 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 ) 2026-03-19 09:18:35 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:35 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:35 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:35 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:35 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:35 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) 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-03-19 09:18:35 INFO imstat:::: Values --- 2026-03-19 09:18:35 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:35 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:35 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- minimum value [min]: -7.78732e-05 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:35 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:35 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:35 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:35 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:35 INFO imstat:::: Statistics --- 2026-03-19 09:18:35 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- Median of the pixel values [median]: -1.86516e-05 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73802e-05 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- IQR [quartile]: 3.56959e-05 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- First quartile [q1]: -3.45348e-05 Jy/beam 2026-03-19 09:18:35 INFO imstat:::: -- Third quartile [q3]: 1.16101e-06 Jy/beam 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:35 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:35 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 2026-03-19 09:18:35 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:35.404061 End time: 2026-03-19 09:18:35.431703 2026-03-19 09:18:35 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:35 INFO imstat::::casa ########################################## 2026-03-19 09:18:35 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:35 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:35 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' ) 2026-03-19 09:18:35 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:35 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:35 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:35 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:35 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:35 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:35 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:35 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:35 INFO MSTransformManager::open Select data 2026-03-19 09:18:35 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:36 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:36 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05h00m21.5326 6.352706472deg' successfully parsed 2026-03-19 09:18:36 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:36 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:36 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:35.447794 End time: 2026-03-19 09:18:35.822924 2026-03-19 09:18:36 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:36 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:36 INFO tclean::::casa ########################################## 2026-03-19 09:18:36 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:36 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 ) 2026-03-19 09:18:36 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:36 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:36 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:36 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:36 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:36 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:36 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:36 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:36 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:36 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:36 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:36 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:36 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:36 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.015436 2026-03-19 09:18:36 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:36 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:36 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:36 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:36 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:36 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:36 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:36 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:36 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:36 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:36 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:37 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:37 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:37 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:37 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:37 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:37 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:37 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:37 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:37 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:37 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:37 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:35.852815 End time: 2026-03-19 09:18:37.356840 2026-03-19 09:18:37 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:37 INFO tclean::::casa ########################################## 2026-03-19 09:18:37 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:37 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:37 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) 2026-03-19 09:18:37 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:37 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:37 2026****** 2026-03-19 09:18:37 INFO ImageFitter::fit+ 2026-03-19 09:18:37 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:37 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:37 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:37 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:37 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:37 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:37 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:37 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:37 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:37 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:37 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) 2026-03-19 09:18:37 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116872 Jy 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126486 Jy 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:37 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:37 INFO imstat::::casa ########################################## 2026-03-19 09:18:37 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:37 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 ) 2026-03-19 09:18:37 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:37 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:37 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:37 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:37 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:37 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) 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:37 INFO imstat:::: Values --- 2026-03-19 09:18:37 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:37 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:37 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- minimum value [min]: -7.7777e-05 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:37 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:37 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:37 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:37 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:37 INFO imstat:::: Statistics --- 2026-03-19 09:18:37 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- Median of the pixel values [median]: -1.86705e-05 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7361e-05 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- IQR [quartile]: 3.56027e-05 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- First quartile [q1]: -3.45074e-05 Jy/beam 2026-03-19 09:18:37 INFO imstat:::: -- Third quartile [q3]: 1.09529e-06 Jy/beam 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:37 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:37 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 2026-03-19 09:18:37 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:37.426339 End time: 2026-03-19 09:18:37.453139 2026-03-19 09:18:37 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:37 INFO imstat::::casa ########################################## 2026-03-19 09:18:37 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:37 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:37 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' ) 2026-03-19 09:18:37 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:37 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:37 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:37 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:37 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:37 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:37 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:37 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:37 INFO MSTransformManager::open Select data 2026-03-19 09:18:37 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:38 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:38 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05h00m21.5326 0.110875644rad' successfully parsed 2026-03-19 09:18:38 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:38 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:38 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:37.468406 End time: 2026-03-19 09:18:37.925659 2026-03-19 09:18:38 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:38 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:38 INFO tclean::::casa ########################################## 2026-03-19 09:18:38 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:38 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 ) 2026-03-19 09:18:38 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:38 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:38 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:38 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:38 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:38 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:38 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:38 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:38 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:38 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:38 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:38 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:38 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:38 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.022832 2026-03-19 09:18:38 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:38 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:38 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:38 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:38 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:38 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:38 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:38 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:38 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:39 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:39 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:39 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:39 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:39 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:39 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:39 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:39 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:39 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:39 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:39 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:39 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:39 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:37.943481 End time: 2026-03-19 09:18:39.313874 2026-03-19 09:18:39 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:39 INFO tclean::::casa ########################################## 2026-03-19 09:18:39 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:39 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:39 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) 2026-03-19 09:18:39 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:39 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:39 2026****** 2026-03-19 09:18:39 INFO ImageFitter::fit+ 2026-03-19 09:18:39 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:39 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:39 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:39 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:39 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:39 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:39 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:39 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:39 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:39 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:39 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) 2026-03-19 09:18:39 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- ra: 128.000012 +/- 0.000127 pixels 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:39 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:39 INFO imstat::::casa ########################################## 2026-03-19 09:18:39 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:39 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 ) 2026-03-19 09:18:39 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:39 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:39 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:39 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:39 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:39 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) 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:39 INFO imstat:::: Values --- 2026-03-19 09:18:39 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:39 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:39 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- minimum value [min]: -7.77849e-05 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:39 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:18:39 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:39 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:18:39 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:39 INFO imstat:::: Statistics --- 2026-03-19 09:18:39 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73549e-05 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- IQR [quartile]: 3.56016e-05 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- First quartile [q1]: -3.45087e-05 Jy/beam 2026-03-19 09:18:39 INFO imstat:::: -- Third quartile [q3]: 1.0929e-06 Jy/beam 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:39 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:39 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 2026-03-19 09:18:39 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:39.376732 End time: 2026-03-19 09:18:39.401505 2026-03-19 09:18:39 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:39 INFO imstat::::casa ########################################## 2026-03-19 09:18:39 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:39 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:39 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' ) 2026-03-19 09:18:39 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:39 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:39 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:39 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:39 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:39 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:39 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:39 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:39 INFO MSTransformManager::open Select data 2026-03-19 09:18:39 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:40 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:40 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05:00:21.5326 +006d21m09.7433' successfully parsed 2026-03-19 09:18:40 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:40 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:40 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:39.416028 End time: 2026-03-19 09:18:39.839676 2026-03-19 09:18:40 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:40 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:40 INFO tclean::::casa ########################################## 2026-03-19 09:18:40 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:40 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 ) 2026-03-19 09:18:40 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:40 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:40 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:40 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:40 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:40 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:40 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:40 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:40 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:40 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:40 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:40 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:40 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:40 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.019477 2026-03-19 09:18:40 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:40 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:40 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:40 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:40 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:40 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:40 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:40 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:40 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:41 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:41 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:41 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:41 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:41 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:41 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:41 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:41 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:41 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:41 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:41 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:41 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:41 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:39.870424 End time: 2026-03-19 09:18:41.285886 2026-03-19 09:18:41 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:41 INFO tclean::::casa ########################################## 2026-03-19 09:18:41 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:41 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:41 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) 2026-03-19 09:18:41 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:41 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:41 2026****** 2026-03-19 09:18:41 INFO ImageFitter::fit+ 2026-03-19 09:18:41 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:41 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:41 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:41 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:41 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:41 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:41 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:41 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:41 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:41 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:41 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) 2026-03-19 09:18:41 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116868 Jy 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126484 Jy 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:41 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:41 INFO imstat::::casa ########################################## 2026-03-19 09:18:41 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:41 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 ) 2026-03-19 09:18:41 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:41 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:41 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:41 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:41 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:41 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) 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:41 INFO imstat:::: Values --- 2026-03-19 09:18:41 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:41 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:41 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- minimum value [min]: -7.77795e-05 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:41 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:41 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:41 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:41 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:41 INFO imstat:::: Statistics --- 2026-03-19 09:18:41 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- Median of the pixel values [median]: -1.86702e-05 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73612e-05 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- IQR [quartile]: 3.56029e-05 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- First quartile [q1]: -3.45082e-05 Jy/beam 2026-03-19 09:18:41 INFO imstat:::: -- Third quartile [q3]: 1.09472e-06 Jy/beam 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:41 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:41 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 2026-03-19 09:18:41 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:41.327176 End time: 2026-03-19 09:18:41.346850 2026-03-19 09:18:41 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:41 INFO imstat::::casa ########################################## 2026-03-19 09:18:41 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:41 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:41 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 00:25:24.6496' ) 2026-03-19 09:18:41 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:41 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:41 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:41 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:41 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:41 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:41 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:41 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:41 INFO MSTransformManager::open Select data 2026-03-19 09:18:41 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:42 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 ".". 2026-03-19 09:18:42 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05:00:21.5326 00:25:24.6496' successfully parsed 2026-03-19 09:18:42 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:42 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:42 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:41.358923 End time: 2026-03-19 09:18:41.709971 2026-03-19 09:18:42 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:42 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:42 INFO tclean::::casa ########################################## 2026-03-19 09:18:42 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:42 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 ) 2026-03-19 09:18:42 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:42 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:42 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:42 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:42 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:42 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:42 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:42 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:42 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:42 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:42 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:42 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:42 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:42 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.019212 2026-03-19 09:18:42 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:42 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:42 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:42 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:42 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:42 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:42 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:42 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:42 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:42 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:43 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:43 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:43 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:43 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:43 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:43 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:43 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:43 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:43 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:43 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:43 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:43 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:43 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:43 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:43 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:43 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:43 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:41.727657 End time: 2026-03-19 09:18:43.243136 2026-03-19 09:18:43 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:43 INFO tclean::::casa ########################################## 2026-03-19 09:18:43 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:43 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:43 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) 2026-03-19 09:18:43 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:43 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:43 2026****** 2026-03-19 09:18:43 INFO ImageFitter::fit+ 2026-03-19 09:18:43 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:43 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:43 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:43 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:43 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:43 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:43 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:43 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:43 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:43 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:43 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) 2026-03-19 09:18:43 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116907 Jy 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012652 Jy 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999994 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000038 +/- 0.000777 arcsec 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- ra: 127.999939 +/- 0.000127 pixels 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- dec: 127.999957 +/- 0.000097 pixels 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:43 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:43 INFO imstat::::casa ########################################## 2026-03-19 09:18:43 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:43 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 ) 2026-03-19 09:18:43 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:43 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:43 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:43 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:43 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:43 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) 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-03-19 09:18:43 INFO imstat:::: Values --- 2026-03-19 09:18:43 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:43 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:43 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- minimum value [min]: -7.78732e-05 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:43 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:43 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:43 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:43 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:43 INFO imstat:::: Statistics --- 2026-03-19 09:18:43 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- Median of the pixel values [median]: -1.86516e-05 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73802e-05 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- IQR [quartile]: 3.56959e-05 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- First quartile [q1]: -3.45348e-05 Jy/beam 2026-03-19 09:18:43 INFO imstat:::: -- Third quartile [q3]: 1.16101e-06 Jy/beam 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:43 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:43 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 2026-03-19 09:18:43 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:43.317704 End time: 2026-03-19 09:18:43.345949 2026-03-19 09:18:43 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:43 INFO imstat::::casa ########################################## 2026-03-19 09:18:43 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:43 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:43 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 05:00:21.5326 6.352706472deg' ) 2026-03-19 09:18:43 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:43 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:43 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:43 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:43 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:43 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:43 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:43 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:43 INFO MSTransformManager::open Select data 2026-03-19 09:18:43 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:44 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:44 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05:00:21.5326 6.352706472deg' successfully parsed 2026-03-19 09:18:44 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:44 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:44 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:43.362017 End time: 2026-03-19 09:18:43.804109 2026-03-19 09:18:44 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:44 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:44 INFO tclean::::casa ########################################## 2026-03-19 09:18:44 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:44 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 ) 2026-03-19 09:18:44 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:44 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:44 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:44 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:44 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:44 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:44 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:44 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:44 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:44 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:44 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:44 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:44 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:44 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010335 2026-03-19 09:18:44 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:44 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:44 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:44 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:44 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:44 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:44 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:44 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:44 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:44 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:45 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:45 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:45 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:45 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:45 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:45 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:45 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:45 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:45 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:45 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:45 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:45 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:45 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:45 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:45 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:45 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:43.821503 End time: 2026-03-19 09:18:45.136046 2026-03-19 09:18:45 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:45 INFO tclean::::casa ########################################## 2026-03-19 09:18:45 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:45 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:45 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) 2026-03-19 09:18:45 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:45 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:45 2026****** 2026-03-19 09:18:45 INFO ImageFitter::fit+ 2026-03-19 09:18:45 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:45 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:45 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:45 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:45 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:45 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:45 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:45 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:45 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:45 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:45 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) 2026-03-19 09:18:45 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116872 Jy 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126486 Jy 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:45 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:45 INFO imstat::::casa ########################################## 2026-03-19 09:18:45 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:45 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 ) 2026-03-19 09:18:45 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:45 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:45 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:45 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:45 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:45 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) 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:45 INFO imstat:::: Values --- 2026-03-19 09:18:45 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:45 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:45 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- minimum value [min]: -7.7777e-05 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:45 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:45 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:45 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:45 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:45 INFO imstat:::: Statistics --- 2026-03-19 09:18:45 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- Median of the pixel values [median]: -1.86705e-05 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.7361e-05 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- IQR [quartile]: 3.56027e-05 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- First quartile [q1]: -3.45074e-05 Jy/beam 2026-03-19 09:18:45 INFO imstat:::: -- Third quartile [q3]: 1.09529e-06 Jy/beam 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:45 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:45 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 2026-03-19 09:18:45 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:45.197690 End time: 2026-03-19 09:18:45.234124 2026-03-19 09:18:45 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:45 INFO imstat::::casa ########################################## 2026-03-19 09:18:45 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:45 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:45 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 05:00:21.5326 0.110875644rad' ) 2026-03-19 09:18:45 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:45 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:45 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:45 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:45 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:45 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:45 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:45 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:45 INFO MSTransformManager::open Select data 2026-03-19 09:18:45 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:45 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:45 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 05:00:21.5326 0.110875644rad' successfully parsed 2026-03-19 09:18:45 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:46 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:46 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:45.253398 End time: 2026-03-19 09:18:45.705725 2026-03-19 09:18:46 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:46 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:46 INFO tclean::::casa ########################################## 2026-03-19 09:18:46 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:46 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 ) 2026-03-19 09:18:46 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:46 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:46 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:46 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:46 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:46 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:46 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:46 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:46 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:46 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:46 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:46 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:46 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:46 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.015372 2026-03-19 09:18:46 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:46 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:46 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:46 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:46 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:46 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:46 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:46 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:46 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:46 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:47 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:47 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:47 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:47 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:47 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:47 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:47 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:47 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:47 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:47 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:47 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:47 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:47 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:47 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:47 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:47 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:45.725086 End time: 2026-03-19 09:18:47.103126 2026-03-19 09:18:47 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:47 INFO tclean::::casa ########################################## 2026-03-19 09:18:47 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:47 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:47 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) 2026-03-19 09:18:47 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:47 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:47 2026****** 2026-03-19 09:18:47 INFO ImageFitter::fit+ 2026-03-19 09:18:47 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:47 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:47 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:47 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:47 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:47 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:47 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:47 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:47 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:47 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:47 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) 2026-03-19 09:18:47 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- ra: 128.000012 +/- 0.000127 pixels 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:47 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:47 INFO imstat::::casa ########################################## 2026-03-19 09:18:47 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:47 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 ) 2026-03-19 09:18:47 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:47 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:47 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:47 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:47 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:47 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) 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:47 INFO imstat:::: Values --- 2026-03-19 09:18:47 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:47 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:47 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- minimum value [min]: -7.77849e-05 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:47 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:18:47 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:47 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:18:47 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:47 INFO imstat:::: Statistics --- 2026-03-19 09:18:47 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- Median of the pixel values [median]: -1.86722e-05 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73549e-05 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- IQR [quartile]: 3.56016e-05 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- First quartile [q1]: -3.45087e-05 Jy/beam 2026-03-19 09:18:47 INFO imstat:::: -- Third quartile [q3]: 1.0929e-06 Jy/beam 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:47 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:47 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 2026-03-19 09:18:47 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:47.184827 End time: 2026-03-19 09:18:47.214654 2026-03-19 09:18:47 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:47 INFO imstat::::casa ########################################## 2026-03-19 09:18:47 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:47 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:47 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 +006d21m09.7433' ) 2026-03-19 09:18:47 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:47 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:47 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:47 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:47 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:47 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:47 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:47 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:47 INFO MSTransformManager::open Select data 2026-03-19 09:18:47 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:47 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:47 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 75.089719167deg +006d21m09.7433' successfully parsed 2026-03-19 09:18:47 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:48 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:48 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:47.231691 End time: 2026-03-19 09:18:47.675043 2026-03-19 09:18:48 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:48 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:48 INFO tclean::::casa ########################################## 2026-03-19 09:18:48 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:48 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 ) 2026-03-19 09:18:48 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:48 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:48 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:48 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:48 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:48 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:48 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:48 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:48 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:48 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:48 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:48 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:48 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:48 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010705 2026-03-19 09:18:48 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:48 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:48 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:48 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:48 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:48 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:48 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:48 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:48 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:48 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:49 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:49 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:49 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:49 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:49 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:49 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:49 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:49 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:49 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:49 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:49 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:49 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:49 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:49 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:47.692890 End time: 2026-03-19 09:18:49.050916 2026-03-19 09:18:49 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:49 INFO tclean::::casa ########################################## 2026-03-19 09:18:49 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:49 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:49 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) 2026-03-19 09:18:49 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:49 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:49 2026****** 2026-03-19 09:18:49 INFO ImageFitter::fit+ 2026-03-19 09:18:49 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:49 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:49 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:49 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:49 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:49 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:49 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:49 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:49 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:49 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:49 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) 2026-03-19 09:18:49 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116867 Jy 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126483 Jy 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- dec: 127.999996 +/- 0.000097 pixels 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:49 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:49 INFO imstat::::casa ########################################## 2026-03-19 09:18:49 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:49 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 ) 2026-03-19 09:18:49 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:49 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:49 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:49 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:49 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:49 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) 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:49 INFO imstat:::: Values --- 2026-03-19 09:18:49 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:49 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:49 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- minimum value [min]: -7.77768e-05 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:49 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:49 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:49 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:49 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:49 INFO imstat:::: Statistics --- 2026-03-19 09:18:49 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- Median of the pixel values [median]: -1.86705e-05 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73609e-05 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- IQR [quartile]: 3.56013e-05 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- First quartile [q1]: -3.4507e-05 Jy/beam 2026-03-19 09:18:49 INFO imstat:::: -- Third quartile [q3]: 1.09435e-06 Jy/beam 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:49 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:49 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 2026-03-19 09:18:49 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:49.098593 End time: 2026-03-19 09:18:49.132659 2026-03-19 09:18:49 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:49 INFO imstat::::casa ########################################## 2026-03-19 09:18:49 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:49 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:49 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' ) 2026-03-19 09:18:49 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:49 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:49 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:49 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:49 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:49 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:49 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:49 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:49 INFO MSTransformManager::open Select data 2026-03-19 09:18:49 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:49 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 ".". 2026-03-19 09:18:49 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 75.089719167deg 00:25:24.6496' successfully parsed 2026-03-19 09:18:49 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:50 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:50 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:49.155848 End time: 2026-03-19 09:18:49.634276 2026-03-19 09:18:50 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:50 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:50 INFO tclean::::casa ########################################## 2026-03-19 09:18:50 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:50 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 ) 2026-03-19 09:18:50 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:50 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:50 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:50 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:50 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:50 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:50 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:50 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:50 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:50 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:50 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:50 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:50 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:50 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010572 2026-03-19 09:18:50 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:50 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:50 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:50 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:50 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:50 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:50 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:50 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:50 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:50 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:50 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:50 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:51 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:51 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:51 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:51 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:51 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:51 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:51 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:51 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:51 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:51 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:51 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:51 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:51 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:49.652872 End time: 2026-03-19 09:18:51.050843 2026-03-19 09:18:51 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:51 INFO tclean::::casa ########################################## 2026-03-19 09:18:51 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:51 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:51 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) 2026-03-19 09:18:51 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:51 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:51 2026****** 2026-03-19 09:18:51 INFO ImageFitter::fit+ 2026-03-19 09:18:51 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:51 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:51 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:51 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:51 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:51 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:51 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:51 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:51 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:51 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:51 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) 2026-03-19 09:18:51 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116903 Jy 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126517 Jy 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999994 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000038 +/- 0.000777 arcsec 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- ra: 127.999939 +/- 0.000127 pixels 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- dec: 127.999957 +/- 0.000097 pixels 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:51 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:51 INFO imstat::::casa ########################################## 2026-03-19 09:18:51 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:51 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 ) 2026-03-19 09:18:51 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:51 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:51 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:51 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:51 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:51 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) 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-03-19 09:18:51 INFO imstat:::: Values --- 2026-03-19 09:18:51 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:51 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:51 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- minimum value [min]: -7.78731e-05 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:51 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:51 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:51 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:51 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:51 INFO imstat:::: Statistics --- 2026-03-19 09:18:51 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- Median of the pixel values [median]: -1.86503e-05 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73798e-05 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- IQR [quartile]: 3.56966e-05 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- First quartile [q1]: -3.45352e-05 Jy/beam 2026-03-19 09:18:51 INFO imstat:::: -- Third quartile [q3]: 1.16146e-06 Jy/beam 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:51 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:51 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 2026-03-19 09:18:51 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:51.096431 End time: 2026-03-19 09:18:51.117306 2026-03-19 09:18:51 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:51 INFO imstat::::casa ########################################## 2026-03-19 09:18:51 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:51 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:51 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' ) 2026-03-19 09:18:51 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:51 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:51 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:51 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:51 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:51 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:51 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:51 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:51 INFO MSTransformManager::open Select data 2026-03-19 09:18:51 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:51 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:51 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 75.089719167deg 6.352706472deg' successfully parsed 2026-03-19 09:18:51 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:52 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:52 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:51.130550 End time: 2026-03-19 09:18:51.550629 2026-03-19 09:18:52 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:52 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:52 INFO tclean::::casa ########################################## 2026-03-19 09:18:52 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:52 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 ) 2026-03-19 09:18:52 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:52 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:52 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:52 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:52 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:52 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:52 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:52 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:52 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:52 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:52 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:52 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:52 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:52 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013117 2026-03-19 09:18:52 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:52 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:52 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:52 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:52 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:52 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:52 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:52 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:52 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:52 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:52 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:52 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:53 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:53 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:53 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:53 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:53 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:53 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:53 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:53 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:53 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:53 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:53 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:51.569030 End time: 2026-03-19 09:18:52.851500 2026-03-19 09:18:53 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:53 INFO tclean::::casa ########################################## 2026-03-19 09:18:53 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:53 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:53 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) 2026-03-19 09:18:53 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:53 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:53 2026****** 2026-03-19 09:18:53 INFO ImageFitter::fit+ 2026-03-19 09:18:53 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:53 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:53 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:53 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:53 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:53 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:53 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:53 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:53 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:53 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:53 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) 2026-03-19 09:18:53 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.00011687 Jy 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- ra: 128.000005 +/- 0.000127 pixels 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- dec: 127.999996 +/- 0.000097 pixels 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:53 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:53 INFO imstat::::casa ########################################## 2026-03-19 09:18:53 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:53 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 ) 2026-03-19 09:18:53 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:53 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:53 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:53 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:53 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:53 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) 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:53 INFO imstat:::: Values --- 2026-03-19 09:18:53 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:53 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:53 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- minimum value [min]: -7.77771e-05 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:53 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:53 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:53 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:53 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:53 INFO imstat:::: Statistics --- 2026-03-19 09:18:53 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- Median of the pixel values [median]: -1.86715e-05 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73619e-05 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- IQR [quartile]: 3.56021e-05 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- First quartile [q1]: -3.45061e-05 Jy/beam 2026-03-19 09:18:53 INFO imstat:::: -- Third quartile [q3]: 1.09605e-06 Jy/beam 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:53 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:53 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 2026-03-19 09:18:53 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:52.913516 End time: 2026-03-19 09:18:52.938237 2026-03-19 09:18:53 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:53 INFO imstat::::casa ########################################## 2026-03-19 09:18:53 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:53 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:53 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' ) 2026-03-19 09:18:53 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:53 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:53 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:53 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:53 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:53 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:53 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:53 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:53 INFO MSTransformManager::open Select data 2026-03-19 09:18:53 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:53 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:53 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 75.089719167deg 0.110875644rad' successfully parsed 2026-03-19 09:18:53 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:53 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:53 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:52.952588 End time: 2026-03-19 09:18:53.353146 2026-03-19 09:18:53 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:53 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:53 INFO tclean::::casa ########################################## 2026-03-19 09:18:53 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:53 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 ) 2026-03-19 09:18:53 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:53 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:53 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:53 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:53 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:53 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:53 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:53 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:53 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:53 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:53 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:53 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:54 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:54 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.0181 2026-03-19 09:18:54 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:54 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:54 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:54 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:54 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:54 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:54 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:54 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:54 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:54 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:55 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:55 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:55 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:55 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:55 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:55 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:55 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:55 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:55 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:55 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:55 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:55 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:53.371014 End time: 2026-03-19 09:18:54.957749 2026-03-19 09:18:55 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:55 INFO tclean::::casa ########################################## 2026-03-19 09:18:55 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:55 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:55 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) 2026-03-19 09:18:55 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:55 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:55 2026****** 2026-03-19 09:18:55 INFO ImageFitter::fit+ 2026-03-19 09:18:55 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:55 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:55 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:55 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:55 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:55 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:55 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:55 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:55 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:55 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:55 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) 2026-03-19 09:18:55 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116868 Jy 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126482 Jy 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000000 +/- 0.000777 arcsec 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- ra: 128.000012 +/- 0.000127 pixels 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- dec: 128.000001 +/- 0.000097 pixels 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:55 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:55 INFO imstat::::casa ########################################## 2026-03-19 09:18:55 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:55 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 ) 2026-03-19 09:18:55 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:55 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:55 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:55 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:55 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:55 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) 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:55 INFO imstat:::: Values --- 2026-03-19 09:18:55 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:55 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:55 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- minimum value [min]: -7.77855e-05 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:55 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:18:55 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:55 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:18:55 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:55 INFO imstat:::: Statistics --- 2026-03-19 09:18:55 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- Median of the pixel values [median]: -1.86732e-05 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73562e-05 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- IQR [quartile]: 3.56008e-05 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- First quartile [q1]: -3.45107e-05 Jy/beam 2026-03-19 09:18:55 INFO imstat:::: -- Third quartile [q3]: 1.09015e-06 Jy/beam 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:55 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:55 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 2026-03-19 09:18:55 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:55.038968 End time: 2026-03-19 09:18:55.067121 2026-03-19 09:18:55 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:55 INFO imstat::::casa ########################################## 2026-03-19 09:18:55 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:55 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:55 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' ) 2026-03-19 09:18:55 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:55 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:55 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:55 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:55 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:55 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:55 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:55 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:55 INFO MSTransformManager::open Select data 2026-03-19 09:18:55 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:55 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:55 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 1.310562834rad +006d21m09.7433' successfully parsed 2026-03-19 09:18:55 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:56 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:56 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:55.083493 End time: 2026-03-19 09:18:55.518595 2026-03-19 09:18:56 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:56 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:56 INFO tclean::::casa ########################################## 2026-03-19 09:18:56 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:56 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 ) 2026-03-19 09:18:56 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:56 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:56 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:56 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:56 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:56 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:56 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:56 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:56 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:56 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:56 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:56 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:56 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:56 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011571 2026-03-19 09:18:56 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:56 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:56 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:56 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:56 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:56 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:56 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:56 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:56 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:56 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:57 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:18:57 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:57 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:57 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:57 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:57 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:57 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:57 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:57 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:57 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:57 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:55.539724 End time: 2026-03-19 09:18:56.920814 2026-03-19 09:18:57 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:57 INFO tclean::::casa ########################################## 2026-03-19 09:18:57 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:57 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:57 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) 2026-03-19 09:18:57 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:57 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:57 2026****** 2026-03-19 09:18:57 INFO ImageFitter::fit+ 2026-03-19 09:18:57 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:57 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:57 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:57 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:57 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:57 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:57 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:57 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:57 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:57 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:57 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) 2026-03-19 09:18:57 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116872 Jy 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000006 +/- 0.000777 arcsec 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- ra: 128.000007 +/- 0.000127 pixels 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- dec: 127.999994 +/- 0.000097 pixels 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:57 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:57 INFO imstat::::casa ########################################## 2026-03-19 09:18:57 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:57 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 ) 2026-03-19 09:18:57 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:57 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:57 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:57 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:57 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:57 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) 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:18:57 INFO imstat:::: Values --- 2026-03-19 09:18:57 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:57 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:57 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- minimum value [min]: -7.77801e-05 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:57 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:57 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:57 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:57 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:57 INFO imstat:::: Statistics --- 2026-03-19 09:18:57 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- Median of the pixel values [median]: -1.86669e-05 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73635e-05 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- IQR [quartile]: 3.56081e-05 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- First quartile [q1]: -3.45085e-05 Jy/beam 2026-03-19 09:18:57 INFO imstat:::: -- Third quartile [q3]: 1.09959e-06 Jy/beam 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:57 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:57 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 2026-03-19 09:18:57 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:56.963751 End time: 2026-03-19 09:18:56.984510 2026-03-19 09:18:57 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:57 INFO imstat::::casa ########################################## 2026-03-19 09:18:57 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:57 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:57 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' ) 2026-03-19 09:18:57 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:57 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:57 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:57 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:57 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:57 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:57 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:57 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:57 INFO MSTransformManager::open Select data 2026-03-19 09:18:57 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:57 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 ".". 2026-03-19 09:18:57 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 1.310562834rad 00:25:24.6496' successfully parsed 2026-03-19 09:18:57 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:57 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:18:57 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:56.997609 End time: 2026-03-19 09:18:57.462200 2026-03-19 09:18:57 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:18:57 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:58 INFO tclean::::casa ########################################## 2026-03-19 09:18:58 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:18:58 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 ) 2026-03-19 09:18:58 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:18:58 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:18:58 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:18:58 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:58 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:18:58 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:18:58 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:18:58 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:18:58 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:18:58 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:18:58 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:18:58 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:18:58 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:18:58 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.016344 2026-03-19 09:18:58 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:58 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:18:58 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:18:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:18:58 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:18:58 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:18:58 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:18:58 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:18:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:18:58 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:18:58 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:18:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:18:58 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:18:58 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:18:58 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:18:58 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:18:58 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:18:58 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:18:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:18:59 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:18:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:18:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:18:59 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:18:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:18:59 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:18:59 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:18:59 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:18:59 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:18:59 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:18:59 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:18:59 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:18:59 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:18:59 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:18:59 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:57.499959 End time: 2026-03-19 09:18:59.014004 2026-03-19 09:18:59 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:18:59 INFO tclean::::casa ########################################## 2026-03-19 09:18:59 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:18:59 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:59 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) 2026-03-19 09:18:59 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:18:59 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:18:59 2026****** 2026-03-19 09:18:59 INFO ImageFitter::fit+ 2026-03-19 09:18:59 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:18:59 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:18:59 INFO ImageFitter::fit+ --- region: 2026-03-19 09:18:59 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:18:59 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:18:59 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:18:59 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:18:59 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:18:59 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:18:59 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:59 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) 2026-03-19 09:18:59 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116905 Jy 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.00012652 Jy 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999994 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000041 +/- 0.000777 arcsec 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- ra: 127.999941 +/- 0.000127 pixels 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- dec: 127.999954 +/- 0.000097 pixels 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:18:59 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:18:59 INFO imstat::::casa ########################################## 2026-03-19 09:18:59 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:18:59 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 ) 2026-03-19 09:18:59 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:18:59 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:18:59 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:18:59 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:18:59 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:18:59 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) 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-03-19 09:18:59 INFO imstat:::: Values --- 2026-03-19 09:18:59 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:18:59 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:18:59 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- minimum value [min]: -7.78774e-05 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:18:59 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:18:59 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:18:59 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:18:59 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:18:59 INFO imstat:::: Statistics --- 2026-03-19 09:18:59 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- Median of the pixel values [median]: -1.86532e-05 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73779e-05 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- IQR [quartile]: 3.5701e-05 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- First quartile [q1]: -3.45356e-05 Jy/beam 2026-03-19 09:18:59 INFO imstat:::: -- Third quartile [q3]: 1.16544e-06 Jy/beam 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:18:59 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:18:59 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 2026-03-19 09:18:59 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:18:59.056013 End time: 2026-03-19 09:18:59.076407 2026-03-19 09:18:59 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:18:59 INFO imstat::::casa ########################################## 2026-03-19 09:18:59 INFO phaseshift::::casa ########################################## 2026-03-19 09:18:59 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:18:59 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' ) 2026-03-19 09:18:59 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:18:59 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:18:59 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:18:59 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:18:59 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:18:59 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:18:59 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:18:59 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:18:59 INFO MSTransformManager::open Select data 2026-03-19 09:18:59 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:18:59 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:18:59 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 1.310562834rad 6.352706472deg' successfully parsed 2026-03-19 09:18:59 INFO phaseshift::::casa Shift phase center 2026-03-19 09:18:59 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:00 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:18:59.088583 End time: 2026-03-19 09:18:59.504808 2026-03-19 09:19:00 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:00 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:00 INFO tclean::::casa ########################################## 2026-03-19 09:19:00 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:00 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 ) 2026-03-19 09:19:00 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:00 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:00 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:00 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:00 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:00 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:00 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:00 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:00 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:00 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:00 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:00 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:00 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:00 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013778 2026-03-19 09:19:00 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:00 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:00 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:00 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:00 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:00 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:00 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:00 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:00 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:00 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:01 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:01 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:01 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:01 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:01 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:01 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:01 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:01 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:01 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:01 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:01 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:01 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:18:59.523434 End time: 2026-03-19 09:19:00.976862 2026-03-19 09:19:01 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:01 INFO tclean::::casa ########################################## 2026-03-19 09:19:01 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:01 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:01 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) 2026-03-19 09:19:01 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:01 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:01 2026****** 2026-03-19 09:19:01 INFO ImageFitter::fit+ 2026-03-19 09:19:01 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:01 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:01 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:01 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:01 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:01 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:01 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:01 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:01 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:01 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:01 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) 2026-03-19 09:19:01 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116868 Jy 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000006 +/- 0.000777 arcsec 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- ra: 128.000007 +/- 0.000127 pixels 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- dec: 127.999994 +/- 0.000097 pixels 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:01 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:01 INFO imstat::::casa ########################################## 2026-03-19 09:19:01 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:01 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 ) 2026-03-19 09:19:01 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:01 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:01 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:01 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:01 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:01 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) 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:01 INFO imstat:::: Values --- 2026-03-19 09:19:01 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:01 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:01 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- minimum value [min]: -7.77798e-05 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:01 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:01 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:01 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:01 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:01 INFO imstat:::: Statistics --- 2026-03-19 09:19:01 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- Median of the pixel values [median]: -1.86675e-05 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73645e-05 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- IQR [quartile]: 3.56077e-05 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- First quartile [q1]: -3.45073e-05 Jy/beam 2026-03-19 09:19:01 INFO imstat:::: -- Third quartile [q3]: 1.1004e-06 Jy/beam 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:01 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:01 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 2026-03-19 09:19:01 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:01.021414 End time: 2026-03-19 09:19:01.049619 2026-03-19 09:19:01 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:01 INFO imstat::::casa ########################################## 2026-03-19 09:19:01 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:01 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:01 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' ) 2026-03-19 09:19:01 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:01 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:01 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:01 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:01 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:01 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:01 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:01 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:01 INFO MSTransformManager::open Select data 2026-03-19 09:19:01 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:01 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:01 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'GALACTIC 1.310562834rad 0.110875644rad' successfully parsed 2026-03-19 09:19:01 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:01 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:01 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:01.072249 End time: 2026-03-19 09:19:01.469737 2026-03-19 09:19:01 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:01 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:02 INFO tclean::::casa ########################################## 2026-03-19 09:19:02 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:02 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 ) 2026-03-19 09:19:02 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:02 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:02 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:02 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:02 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:02 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:02 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:02 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:02 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:02 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:02 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:02 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:02 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:02 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011296 2026-03-19 09:19:02 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:02 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:02 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:02 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:02 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:02 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:02 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:02 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:02 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:02 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:03 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:19:03 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:03 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:03 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:03 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:03 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:03 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:03 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:03 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:03 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:03 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:01.501053 End time: 2026-03-19 09:19:02.838345 2026-03-19 09:19:03 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:03 INFO tclean::::casa ########################################## 2026-03-19 09:19:03 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:03 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:03 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) 2026-03-19 09:19:03 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:03 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:03 2026****** 2026-03-19 09:19:03 INFO ImageFitter::fit+ 2026-03-19 09:19:03 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:03 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:03 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:03 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:03 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:03 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:03 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:03 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:03 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:03 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:03 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) 2026-03-19 09:19:03 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126484 Jy 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000002 +/- 0.000777 arcsec 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- ra: 128.000014 +/- 0.000127 pixels 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- dec: 127.999998 +/- 0.000097 pixels 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:03 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:03 INFO imstat::::casa ########################################## 2026-03-19 09:19:03 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:03 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 ) 2026-03-19 09:19:03 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:03 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:03 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:03 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:03 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:03 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) 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:03 INFO imstat:::: Values --- 2026-03-19 09:19:03 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:03 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:03 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- minimum value [min]: -7.77816e-05 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:03 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:19:03 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:03 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:19:03 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:03 INFO imstat:::: Statistics --- 2026-03-19 09:19:03 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- Median of the pixel values [median]: -1.8676e-05 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73584e-05 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- IQR [quartile]: 3.56038e-05 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- First quartile [q1]: -3.45104e-05 Jy/beam 2026-03-19 09:19:03 INFO imstat:::: -- Third quartile [q3]: 1.09331e-06 Jy/beam 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:03 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:03 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 2026-03-19 09:19:03 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:02.880003 End time: 2026-03-19 09:19:02.899570 2026-03-19 09:19:03 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:03 INFO imstat::::casa ########################################## 2026-03-19 09:19:03 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:03 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:03 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19h52m05.65239 39d58m05.8512' ) 2026-03-19 09:19:03 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:03 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:03 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:03 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:03 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:03 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:03 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:03 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:03 INFO MSTransformManager::open Select data 2026-03-19 09:19:03 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:03 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:03 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19h52m05.65239 39d58m05.8512' successfully parsed 2026-03-19 09:19:03 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:03 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:03 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:02.911733 End time: 2026-03-19 09:19:03.258396 2026-03-19 09:19:03 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:03 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:03 INFO tclean::::casa ########################################## 2026-03-19 09:19:03 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:03 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 ) 2026-03-19 09:19:03 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:03 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:03 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:03 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:03 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:03 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:03 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:03 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:03 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:03 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:03 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:03 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:04 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:04 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010393 2026-03-19 09:19:04 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:04 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:04 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:04 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:04 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:04 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:04 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:04 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:04 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:04 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:04 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:04 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:04 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:05 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:05 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:05 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:03.276306 End time: 2026-03-19 09:19:04.613898 2026-03-19 09:19:05 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:05 INFO tclean::::casa ########################################## 2026-03-19 09:19:05 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:05 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:05 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) 2026-03-19 09:19:05 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:05 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:05 2026****** 2026-03-19 09:19:05 INFO ImageFitter::fit+ 2026-03-19 09:19:05 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:05 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:05 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:05 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:05 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:05 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:05 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:05 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:05 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:05 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:05 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) 2026-03-19 09:19:05 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:05 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:05 INFO imstat::::casa ########################################## 2026-03-19 09:19:05 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:05 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 ) 2026-03-19 09:19:05 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:05 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:05 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:05 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:05 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:05 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) 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:05 INFO imstat:::: Values --- 2026-03-19 09:19:05 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:05 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:05 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- minimum value [min]: -7.77826e-05 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:05 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:05 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:05 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:05 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:05 INFO imstat:::: Statistics --- 2026-03-19 09:19:05 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- Median of the pixel values [median]: -1.86649e-05 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73604e-05 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- IQR [quartile]: 3.56026e-05 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- First quartile [q1]: -3.45067e-05 Jy/beam 2026-03-19 09:19:05 INFO imstat:::: -- Third quartile [q3]: 1.09593e-06 Jy/beam 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:05 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:05 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 2026-03-19 09:19:05 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:04.655834 End time: 2026-03-19 09:19:04.675818 2026-03-19 09:19:05 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:05 INFO imstat::::casa ########################################## 2026-03-19 09:19:05 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:05 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:05 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' ) 2026-03-19 09:19:05 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:05 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:05 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:05 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:05 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:05 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:05 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:05 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:05 INFO MSTransformManager::open Select data 2026-03-19 09:19:05 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:05 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. NOTE: you provided the Declination/Latitude value "02:39:52.3901" which is understood to be in units of hours. If you meant degrees, please replace ":" by ".". 2026-03-19 09:19:05 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19h52m05.65239 02:39:52.3901' successfully parsed 2026-03-19 09:19:05 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:05 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:05 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:04.688432 End time: 2026-03-19 09:19:05.104611 2026-03-19 09:19:05 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:05 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:05 INFO tclean::::casa ########################################## 2026-03-19 09:19:05 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:05 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 ) 2026-03-19 09:19:05 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:05 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:05 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:05 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:05 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:05 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:05 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:05 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:05 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:05 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:05 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:05 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:05 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:05 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.014454 2026-03-19 09:19:05 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:05 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:05 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:06 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:06 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:06 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:06 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:19:06 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:06 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:06 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:06 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:06 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:06 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:06 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:06 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:06 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:06 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:05.122988 End time: 2026-03-19 09:19:06.455561 2026-03-19 09:19:06 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:06 INFO tclean::::casa ########################################## 2026-03-19 09:19:06 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:06 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:06 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) 2026-03-19 09:19:06 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:06 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:06 2026****** 2026-03-19 09:19:06 INFO ImageFitter::fit+ 2026-03-19 09:19:06 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:06 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:06 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:06 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:06 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:06 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:06 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:06 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:07 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:07 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:07 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) 2026-03-19 09:19:07 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.00011688 Jy 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126496 Jy 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000034 +/- 0.000777 arcsec 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- dec: 127.999963 +/- 0.000097 pixels 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:07 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:07 INFO imstat::::casa ########################################## 2026-03-19 09:19:07 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:07 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 ) 2026-03-19 09:19:07 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:07 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:07 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:07 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:07 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:07 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) 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-03-19 09:19:07 INFO imstat:::: Values --- 2026-03-19 09:19:07 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:07 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:07 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- minimum value [min]: -7.78225e-05 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:07 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:07 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:07 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:07 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:07 INFO imstat:::: Statistics --- 2026-03-19 09:19:07 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- Median of the pixel values [median]: -1.86781e-05 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73751e-05 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- IQR [quartile]: 3.56365e-05 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- First quartile [q1]: -3.45278e-05 Jy/beam 2026-03-19 09:19:07 INFO imstat:::: -- Third quartile [q3]: 1.10869e-06 Jy/beam 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:07 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:07 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 2026-03-19 09:19:07 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:06.530580 End time: 2026-03-19 09:19:06.557298 2026-03-19 09:19:07 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:07 INFO imstat::::casa ########################################## 2026-03-19 09:19:07 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:07 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:07 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19h52m05.65239 39.968292000deg' ) 2026-03-19 09:19:07 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:07 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:07 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:07 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:07 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:07 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:07 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:07 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:07 INFO MSTransformManager::open Select data 2026-03-19 09:19:07 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:07 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:07 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19h52m05.65239 39.968292000deg' successfully parsed 2026-03-19 09:19:07 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:07 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:07 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:06.572636 End time: 2026-03-19 09:19:06.967824 2026-03-19 09:19:07 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:07 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:07 INFO tclean::::casa ########################################## 2026-03-19 09:19:07 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:07 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 ) 2026-03-19 09:19:07 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:07 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:07 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:07 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:07 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:07 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:07 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:07 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:07 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:07 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:07 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:07 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:07 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:07 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010669 2026-03-19 09:19:07 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:07 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:07 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:07 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:07 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:07 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:07 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:07 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:07 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:08 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:08 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:08 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:08 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:08 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:08 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:08 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:08 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:08 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:08 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:08 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:06.985685 End time: 2026-03-19 09:19:08.254198 2026-03-19 09:19:08 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:08 INFO tclean::::casa ########################################## 2026-03-19 09:19:08 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:08 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:08 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) 2026-03-19 09:19:08 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:08 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:08 2026****** 2026-03-19 09:19:08 INFO ImageFitter::fit+ 2026-03-19 09:19:08 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:08 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:08 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:08 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:08 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:08 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:08 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:08 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:08 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:08 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:08 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) 2026-03-19 09:19:08 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:08 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:08 INFO imstat::::casa ########################################## 2026-03-19 09:19:08 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:08 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 ) 2026-03-19 09:19:08 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:08 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:08 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:08 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:08 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:08 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) 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:08 INFO imstat:::: Values --- 2026-03-19 09:19:08 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:08 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:08 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- minimum value [min]: -7.77826e-05 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:08 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:08 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:08 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:08 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:08 INFO imstat:::: Statistics --- 2026-03-19 09:19:08 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- Median of the pixel values [median]: -1.86649e-05 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73604e-05 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- IQR [quartile]: 3.56026e-05 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- First quartile [q1]: -3.45067e-05 Jy/beam 2026-03-19 09:19:08 INFO imstat:::: -- Third quartile [q3]: 1.09593e-06 Jy/beam 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:08 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:08 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 2026-03-19 09:19:08 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:08.315524 End time: 2026-03-19 09:19:08.352385 2026-03-19 09:19:08 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:08 INFO imstat::::casa ########################################## 2026-03-19 09:19:08 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:08 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:08 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 19h52m05.65239 0.697578292rad' ) 2026-03-19 09:19:08 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:08 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:08 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:08 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:08 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:08 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:08 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:08 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:08 INFO MSTransformManager::open Select data 2026-03-19 09:19:08 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:09 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:09 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19h52m05.65239 0.697578292rad' successfully parsed 2026-03-19 09:19:09 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:09 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:09 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:08.367323 End time: 2026-03-19 09:19:08.758907 2026-03-19 09:19:09 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:09 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:09 INFO tclean::::casa ########################################## 2026-03-19 09:19:09 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:09 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 ) 2026-03-19 09:19:09 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:09 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:09 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:09 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:09 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:09 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:09 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:09 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:09 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:09 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:09 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:09 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:09 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:09 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010365 2026-03-19 09:19:09 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:09 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:09 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:09 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:09 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:09 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:09 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:09 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:09 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:09 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:09 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:10 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:10 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:19:10 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:10 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:10 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:10 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:10 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:10 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:10 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:10 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:10 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:10 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:08.777133 End time: 2026-03-19 09:19:09.988339 2026-03-19 09:19:10 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:10 INFO tclean::::casa ########################################## 2026-03-19 09:19:10 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:10 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:10 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) 2026-03-19 09:19:10 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:10 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:10 2026****** 2026-03-19 09:19:10 INFO ImageFitter::fit+ 2026-03-19 09:19:10 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:10 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:10 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:10 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:10 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:10 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:10 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:10 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:10 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:10 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:10 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) 2026-03-19 09:19:10 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000008 +/- 0.000777 arcsec 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- dec: 127.999992 +/- 0.000097 pixels 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:10 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:10 INFO imstat::::casa ########################################## 2026-03-19 09:19:10 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:10 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 ) 2026-03-19 09:19:10 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:10 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:10 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:10 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:10 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:10 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) 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:10 INFO imstat:::: Values --- 2026-03-19 09:19:10 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:10 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:10 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- minimum value [min]: -7.7789e-05 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:10 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:10 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:10 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:10 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:10 INFO imstat:::: Statistics --- 2026-03-19 09:19:10 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- Median of the pixel values [median]: -1.86647e-05 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73649e-05 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- IQR [quartile]: 3.56182e-05 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- First quartile [q1]: -3.45079e-05 Jy/beam 2026-03-19 09:19:10 INFO imstat:::: -- Third quartile [q3]: 1.11022e-06 Jy/beam 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:10 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:10 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 2026-03-19 09:19:10 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:10.030232 End time: 2026-03-19 09:19:10.050024 2026-03-19 09:19:10 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:10 INFO imstat::::casa ########################################## 2026-03-19 09:19:10 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:10 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:10 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 39d58m05.8512' ) 2026-03-19 09:19:10 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:10 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:10 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:10 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:10 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:10 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:10 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:10 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:10 INFO MSTransformManager::open Select data 2026-03-19 09:19:10 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:10 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:10 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19:52:05.6524 39d58m05.8512' successfully parsed 2026-03-19 09:19:10 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:10 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:10 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:10.061758 End time: 2026-03-19 09:19:10.415014 2026-03-19 09:19:10 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:10 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:10 INFO tclean::::casa ########################################## 2026-03-19 09:19:10 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:10 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 ) 2026-03-19 09:19:10 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:10 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:10 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:11 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:11 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:11 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:11 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:11 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:11 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:11 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:11 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:11 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:11 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:11 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011189 2026-03-19 09:19:11 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:11 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:11 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:11 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:11 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:11 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:11 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:11 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:11 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:11 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:11 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:11 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:19:12 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:12 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:12 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:12 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:12 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:12 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:12 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:12 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:12 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:12 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:10.433137 End time: 2026-03-19 09:19:11.854401 2026-03-19 09:19:12 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:12 INFO tclean::::casa ########################################## 2026-03-19 09:19:12 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:12 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:12 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) 2026-03-19 09:19:12 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:12 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:12 2026****** 2026-03-19 09:19:12 INFO ImageFitter::fit+ 2026-03-19 09:19:12 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:12 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:12 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:12 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:12 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:12 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:12 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:12 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:12 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:12 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:12 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) 2026-03-19 09:19:12 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- ra: 128.000009 +/- 0.000127 pixels 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:12 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:12 INFO imstat::::casa ########################################## 2026-03-19 09:19:12 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:12 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 ) 2026-03-19 09:19:12 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:12 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:12 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:12 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:12 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:12 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) 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:12 INFO imstat:::: Values --- 2026-03-19 09:19:12 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:12 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:12 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- minimum value [min]: -7.77773e-05 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:12 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:19:12 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:12 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:19:12 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:12 INFO imstat:::: Statistics --- 2026-03-19 09:19:12 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- Median of the pixel values [median]: -1.86786e-05 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73603e-05 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- IQR [quartile]: 3.56014e-05 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- First quartile [q1]: -3.45038e-05 Jy/beam 2026-03-19 09:19:12 INFO imstat:::: -- Third quartile [q3]: 1.09758e-06 Jy/beam 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:12 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:12 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 2026-03-19 09:19:12 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:11.913555 End time: 2026-03-19 09:19:11.937138 2026-03-19 09:19:12 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:12 INFO imstat::::casa ########################################## 2026-03-19 09:19:12 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:12 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:12 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' ) 2026-03-19 09:19:12 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:12 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:12 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:12 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:12 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:12 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:12 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:12 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:12 INFO MSTransformManager::open Select data 2026-03-19 09:19:12 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:12 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 ".". 2026-03-19 09:19:12 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19:52:05.6524 02:39:52.3901' successfully parsed 2026-03-19 09:19:12 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:12 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:12 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:11.950860 End time: 2026-03-19 09:19:12.399247 2026-03-19 09:19:12 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:12 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:12 INFO tclean::::casa ########################################## 2026-03-19 09:19:12 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:12 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 ) 2026-03-19 09:19:12 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:12 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:12 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:13 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:13 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:13 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:13 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:13 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:13 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:13 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:13 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:13 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:13 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:13 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013214 2026-03-19 09:19:13 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:13 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:13 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:13 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:13 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:13 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:13 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:13 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:13 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:13 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:13 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:13 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:13 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:13 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:13 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:14 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:14 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:14 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:14 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:14 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:14 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:14 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:14 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:14 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:14 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:12.418191 End time: 2026-03-19 09:19:13.783548 2026-03-19 09:19:14 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:14 INFO tclean::::casa ########################################## 2026-03-19 09:19:14 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:14 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:14 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) 2026-03-19 09:19:14 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:14 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:14 2026****** 2026-03-19 09:19:14 INFO ImageFitter::fit+ 2026-03-19 09:19:14 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:14 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:14 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:14 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:14 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:14 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:14 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:14 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:14 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:14 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:14 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) 2026-03-19 09:19:14 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116878 Jy 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126494 Jy 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000034 +/- 0.000777 arcsec 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- ra: 128.000008 +/- 0.000127 pixels 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- dec: 127.999963 +/- 0.000097 pixels 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:14 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:14 INFO imstat::::casa ########################################## 2026-03-19 09:19:14 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:14 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 ) 2026-03-19 09:19:14 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:14 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:14 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:14 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:14 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:14 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) 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-03-19 09:19:14 INFO imstat:::: Values --- 2026-03-19 09:19:14 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:14 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:14 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- minimum value [min]: -7.78143e-05 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:14 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:14 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:14 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:14 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:14 INFO imstat:::: Statistics --- 2026-03-19 09:19:14 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- Median of the pixel values [median]: -1.86838e-05 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73769e-05 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- IQR [quartile]: 3.5634e-05 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- First quartile [q1]: -3.45216e-05 Jy/beam 2026-03-19 09:19:14 INFO imstat:::: -- Third quartile [q3]: 1.1124e-06 Jy/beam 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:14 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:14 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 2026-03-19 09:19:14 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:13.824727 End time: 2026-03-19 09:19:13.844748 2026-03-19 09:19:14 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:14 INFO imstat::::casa ########################################## 2026-03-19 09:19:14 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:14 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:14 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' ) 2026-03-19 09:19:14 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:14 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:14 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:14 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:14 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:14 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:14 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:14 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:14 INFO MSTransformManager::open Select data 2026-03-19 09:19:14 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:14 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:14 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19:52:05.6524 39.968292000deg' successfully parsed 2026-03-19 09:19:14 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:14 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:14 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:13.856547 End time: 2026-03-19 09:19:14.217814 2026-03-19 09:19:14 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:14 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:14 INFO tclean::::casa ########################################## 2026-03-19 09:19:14 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:14 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 ) 2026-03-19 09:19:14 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:14 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:14 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:14 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:14 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:14 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:14 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:14 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:14 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:14 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:14 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:14 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:15 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:15 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.016457 2026-03-19 09:19:15 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:15 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:15 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:15 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:15 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:15 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852554649114609, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:19:15 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:15 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:15 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:15 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:15 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:15 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:15 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:15 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:16 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:16 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:14.235599 End time: 2026-03-19 09:19:15.576174 2026-03-19 09:19:16 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:16 INFO tclean::::casa ########################################## 2026-03-19 09:19:16 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:16 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:16 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) 2026-03-19 09:19:16 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:16 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:16 2026****** 2026-03-19 09:19:16 INFO ImageFitter::fit+ 2026-03-19 09:19:16 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:16 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:16 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:16 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:16 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:16 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:16 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:16 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:16 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:16 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:16 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) 2026-03-19 09:19:16 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- ra: 128.000009 +/- 0.000127 pixels 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:16 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:16 INFO imstat::::casa ########################################## 2026-03-19 09:19:16 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:16 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 ) 2026-03-19 09:19:16 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:16 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:16 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:16 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:16 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:16 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) 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:16 INFO imstat:::: Values --- 2026-03-19 09:19:16 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:16 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:16 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- minimum value [min]: -7.77773e-05 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:16 INFO imstat:::: -- position of min value (pixel) [minpos]: [179, 172, 0, 0] 2026-03-19 09:19:16 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:16 INFO imstat:::: -- position of min value (world) [minposf]: 19:53:14.390, +40.11.51.660, I, 999981612.9Hz 2026-03-19 09:19:16 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:16 INFO imstat:::: Statistics --- 2026-03-19 09:19:16 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- Median of the pixel values [median]: -1.86786e-05 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73603e-05 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- IQR [quartile]: 3.56014e-05 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- First quartile [q1]: -3.45038e-05 Jy/beam 2026-03-19 09:19:16 INFO imstat:::: -- Third quartile [q3]: 1.09758e-06 Jy/beam 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:16 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:16 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 2026-03-19 09:19:16 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:15.618283 End time: 2026-03-19 09:19:15.638499 2026-03-19 09:19:16 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:16 INFO imstat::::casa ########################################## 2026-03-19 09:19:16 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:16 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:16 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 19:52:05.6524 0.697578292rad' ) 2026-03-19 09:19:16 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:16 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:16 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:16 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:16 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:16 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:16 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:16 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:16 INFO MSTransformManager::open Select data 2026-03-19 09:19:16 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:16 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:16 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 19:52:05.6524 0.697578292rad' successfully parsed 2026-03-19 09:19:16 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:16 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:16 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:15.650481 End time: 2026-03-19 09:19:16.090928 2026-03-19 09:19:16 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:16 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:16 INFO tclean::::casa ########################################## 2026-03-19 09:19:16 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:16 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 ) 2026-03-19 09:19:16 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:16 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:16 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:16 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:16 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:16 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:16 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:16 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:16 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:16 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:16 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:16 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:16 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:16 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010625 2026-03-19 09:19:16 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:16 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:16 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:17 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:17 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:17 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:17 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:17 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:17 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:17 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:17 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:17 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:17 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:17 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:17 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:17 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:17 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:16.107743 End time: 2026-03-19 09:19:17.411431 2026-03-19 09:19:17 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:17 INFO tclean::::casa ########################################## 2026-03-19 09:19:17 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:17 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:17 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) 2026-03-19 09:19:17 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:17 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:17 2026****** 2026-03-19 09:19:17 INFO ImageFitter::fit+ 2026-03-19 09:19:17 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:17 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:17 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:17 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:17 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:17 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:17 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:17 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:17 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:17 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:17 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) 2026-03-19 09:19:17 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116871 Jy 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126487 Jy 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000001 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000008 +/- 0.000777 arcsec 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- ra: 128.000009 +/- 0.000127 pixels 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- dec: 127.999992 +/- 0.000097 pixels 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:17 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:17 INFO imstat::::casa ########################################## 2026-03-19 09:19:17 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:17 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 ) 2026-03-19 09:19:17 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:17 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:17 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:17 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:17 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:17 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) 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:17 INFO imstat:::: Values --- 2026-03-19 09:19:17 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:17 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:17 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- minimum value [min]: -7.7781e-05 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:17 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:17 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:17 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:17 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:17 INFO imstat:::: Statistics --- 2026-03-19 09:19:17 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- Median of the pixel values [median]: -1.86714e-05 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73593e-05 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- IQR [quartile]: 3.56161e-05 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- First quartile [q1]: -3.45125e-05 Jy/beam 2026-03-19 09:19:17 INFO imstat:::: -- Third quartile [q3]: 1.10364e-06 Jy/beam 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:17 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:17 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 2026-03-19 09:19:17 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:17.452062 End time: 2026-03-19 09:19:17.471710 2026-03-19 09:19:17 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:17 INFO imstat::::casa ########################################## 2026-03-19 09:19:17 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:17 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:17 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 39d58m05.8512' ) 2026-03-19 09:19:17 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:17 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:17 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:17 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:17 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:18 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:18 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:18 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:18 INFO MSTransformManager::open Select data 2026-03-19 09:19:18 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:18 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:18 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 298.023551625deg 39d58m05.8512' successfully parsed 2026-03-19 09:19:18 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:18 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:18 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:17.483279 End time: 2026-03-19 09:19:17.876926 2026-03-19 09:19:18 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:18 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:18 INFO tclean::::casa ########################################## 2026-03-19 09:19:18 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:18 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 ) 2026-03-19 09:19:18 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:18 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:18 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:18 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:18 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:18 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:18 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:18 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:18 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:18 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:18 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:18 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:18 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:18 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010695 2026-03-19 09:19:18 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:18 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:18 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:18 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:18 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:18 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:18 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:18 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:18 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:18 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:19 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:19 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:19 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:19 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:19 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:19 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:19 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:19 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:19 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:19 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:19 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:17.894474 End time: 2026-03-19 09:19:19.101050 2026-03-19 09:19:19 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:19 INFO tclean::::casa ########################################## 2026-03-19 09:19:19 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:19 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:19 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) 2026-03-19 09:19:19 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:19 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:19 2026****** 2026-03-19 09:19:19 INFO ImageFitter::fit+ 2026-03-19 09:19:19 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:19 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:19 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:19 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:19 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:19 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:19 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:19 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:19 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:19 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:19 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) 2026-03-19 09:19:19 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:19 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:19 INFO imstat::::casa ########################################## 2026-03-19 09:19:19 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:19 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 ) 2026-03-19 09:19:19 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:19 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:19 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:19 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:19 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:19 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) 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:19 INFO imstat:::: Values --- 2026-03-19 09:19:19 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:19 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:19 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- minimum value [min]: -7.77826e-05 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:19 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:19 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:19 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:19 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:19 INFO imstat:::: Statistics --- 2026-03-19 09:19:19 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- Median of the pixel values [median]: -1.86649e-05 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73604e-05 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- IQR [quartile]: 3.56026e-05 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- First quartile [q1]: -3.45067e-05 Jy/beam 2026-03-19 09:19:19 INFO imstat:::: -- Third quartile [q3]: 1.09593e-06 Jy/beam 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:19 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:19 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 2026-03-19 09:19:19 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:19.141531 End time: 2026-03-19 09:19:19.160740 2026-03-19 09:19:19 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:19 INFO imstat::::casa ########################################## 2026-03-19 09:19:19 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:19 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:19 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 02:39:52.3901' ) 2026-03-19 09:19:19 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:19 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:19 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:19 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:19 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:19 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:19 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:19 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:19 INFO MSTransformManager::open Select data 2026-03-19 09:19:19 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:19 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 ".". 2026-03-19 09:19:19 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 298.023551625deg 02:39:52.3901' successfully parsed 2026-03-19 09:19:19 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:20 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:20 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:19.172372 End time: 2026-03-19 09:19:19.563364 2026-03-19 09:19:20 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:20 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:20 INFO tclean::::casa ########################################## 2026-03-19 09:19:20 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:20 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 ) 2026-03-19 09:19:20 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:20 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:20 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:20 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:20 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:20 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:20 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:20 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:20 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:20 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:20 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:20 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:20 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:20 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010613 2026-03-19 09:19:20 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:20 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:20 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:20 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:20 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:20 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:20 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:20 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:20 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:20 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:19:21 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:21 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:21 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:21 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:21 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:21 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:21 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:21 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:21 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:21 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:19.580969 End time: 2026-03-19 09:19:20.788562 2026-03-19 09:19:21 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:21 INFO tclean::::casa ########################################## 2026-03-19 09:19:21 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:21 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:21 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) 2026-03-19 09:19:21 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:21 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:21 2026****** 2026-03-19 09:19:21 INFO ImageFitter::fit+ 2026-03-19 09:19:21 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:21 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:21 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:21 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:21 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:21 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:21 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:21 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:21 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:21 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:21 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) 2026-03-19 09:19:21 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.00011688 Jy 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126496 Jy 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000034 +/- 0.000777 arcsec 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- dec: 127.999963 +/- 0.000097 pixels 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:21 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:21 INFO imstat::::casa ########################################## 2026-03-19 09:19:21 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:21 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 ) 2026-03-19 09:19:21 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:21 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:21 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:21 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:21 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:21 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) 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-03-19 09:19:21 INFO imstat:::: Values --- 2026-03-19 09:19:21 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:21 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:21 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- minimum value [min]: -7.78225e-05 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:21 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:21 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:21 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:21 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:21 INFO imstat:::: Statistics --- 2026-03-19 09:19:21 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- Median of the pixel values [median]: -1.86781e-05 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73751e-05 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- IQR [quartile]: 3.56365e-05 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- First quartile [q1]: -3.45278e-05 Jy/beam 2026-03-19 09:19:21 INFO imstat:::: -- Third quartile [q3]: 1.10869e-06 Jy/beam 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:21 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:21 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 2026-03-19 09:19:21 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:20.837338 End time: 2026-03-19 09:19:20.864763 2026-03-19 09:19:21 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:21 INFO imstat::::casa ########################################## 2026-03-19 09:19:21 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:21 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:21 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 39.968292000deg' ) 2026-03-19 09:19:21 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:21 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:21 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:21 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:21 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:21 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:21 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:21 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:21 INFO MSTransformManager::open Select data 2026-03-19 09:19:21 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:21 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:21 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 298.023551625deg 39.968292000deg' successfully parsed 2026-03-19 09:19:21 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:21 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:21 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:20.876997 End time: 2026-03-19 09:19:21.239670 2026-03-19 09:19:21 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:21 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:21 INFO tclean::::casa ########################################## 2026-03-19 09:19:21 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:21 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 ) 2026-03-19 09:19:21 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:21 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:21 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:21 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:21 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:21 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:21 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:21 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:21 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:21 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:21 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:21 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:22 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:22 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.011115 2026-03-19 09:19:22 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:22 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:22 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:22 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:22 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:22 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:22 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:22 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:22 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:22 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:22 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:22 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:22 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:22 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:22 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:23 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:21.257038 End time: 2026-03-19 09:19:22.560235 2026-03-19 09:19:23 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:23 INFO tclean::::casa ########################################## 2026-03-19 09:19:23 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:23 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:23 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) 2026-03-19 09:19:23 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:23 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:23 2026****** 2026-03-19 09:19:23 INFO ImageFitter::fit+ 2026-03-19 09:19:23 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:23 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:23 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:23 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:23 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:23 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:23 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:23 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:23 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:23 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:23 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) 2026-03-19 09:19:23 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116875 Jy 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126492 Jy 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000004 +/- 0.000777 arcsec 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:23 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:23 INFO imstat::::casa ########################################## 2026-03-19 09:19:23 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:23 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 ) 2026-03-19 09:19:23 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:23 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:23 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:23 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:23 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:23 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) 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:23 INFO imstat:::: Values --- 2026-03-19 09:19:23 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:23 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:23 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- minimum value [min]: -7.77826e-05 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:23 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:23 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:23 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:23 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:23 INFO imstat:::: Statistics --- 2026-03-19 09:19:23 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- Median of the pixel values [median]: -1.86649e-05 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73604e-05 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- IQR [quartile]: 3.56026e-05 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- First quartile [q1]: -3.45067e-05 Jy/beam 2026-03-19 09:19:23 INFO imstat:::: -- Third quartile [q3]: 1.09593e-06 Jy/beam 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:23 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:23 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 2026-03-19 09:19:23 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:22.607834 End time: 2026-03-19 09:19:22.628188 2026-03-19 09:19:23 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:23 INFO imstat::::casa ########################################## 2026-03-19 09:19:23 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:23 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:23 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 298.023551625deg 0.697578292rad' ) 2026-03-19 09:19:23 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:23 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:23 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:23 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:23 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:23 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:23 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:23 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:23 INFO MSTransformManager::open Select data 2026-03-19 09:19:23 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:23 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:23 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 298.023551625deg 0.697578292rad' successfully parsed 2026-03-19 09:19:23 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:23 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:23 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:22.639892 End time: 2026-03-19 09:19:22.978653 2026-03-19 09:19:23 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:23 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:23 INFO tclean::::casa ########################################## 2026-03-19 09:19:23 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:23 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 ) 2026-03-19 09:19:23 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:23 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:23 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:23 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:23 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:23 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:23 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:23 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:23 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:23 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:23 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:23 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:23 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:23 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.010845 2026-03-19 09:19:23 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:23 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:23 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:23 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:23 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:23 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:23 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:23 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:23 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:23 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:24 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852552320808172, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:19:24 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:24 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:24 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:24 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:24 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:24 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:24 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:24 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:24 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:24 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:22.996616 End time: 2026-03-19 09:19:24.179042 2026-03-19 09:19:24 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:24 INFO tclean::::casa ########################################## 2026-03-19 09:19:24 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:24 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:24 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) 2026-03-19 09:19:24 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:24 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:24 2026****** 2026-03-19 09:19:24 INFO ImageFitter::fit+ 2026-03-19 09:19:24 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:24 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:24 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:24 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:24 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:24 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:24 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:24 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:24 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:24 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:24 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) 2026-03-19 09:19:24 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116874 Jy 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126488 Jy 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- ra: 19:53:50.000000 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000008 +/- 0.000777 arcsec 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- ra: 127.999996 +/- 0.000127 pixels 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- dec: 127.999992 +/- 0.000097 pixels 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:24 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:24 INFO imstat::::casa ########################################## 2026-03-19 09:19:24 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:24 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 ) 2026-03-19 09:19:24 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:24 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:24 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:24 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:24 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:24 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) 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:24 INFO imstat:::: Values --- 2026-03-19 09:19:24 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:24 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:24 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- minimum value [min]: -7.7789e-05 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:24 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:24 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:24 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:24 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:24 INFO imstat:::: Statistics --- 2026-03-19 09:19:24 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- Median of the pixel values [median]: -1.86647e-05 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73649e-05 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- IQR [quartile]: 3.56182e-05 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- First quartile [q1]: -3.45079e-05 Jy/beam 2026-03-19 09:19:24 INFO imstat:::: -- Third quartile [q3]: 1.11022e-06 Jy/beam 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:24 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:24 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 2026-03-19 09:19:24 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:24.220379 End time: 2026-03-19 09:19:24.240862 2026-03-19 09:19:24 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:24 INFO imstat::::casa ########################################## 2026-03-19 09:19:24 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:24 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:24 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 5.201492224rad 39d58m05.8512' ) 2026-03-19 09:19:24 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:24 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:24 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:24 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:24 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:24 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:24 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:24 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:24 INFO MSTransformManager::open Select data 2026-03-19 09:19:24 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:24 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:24 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 5.201492224rad 39d58m05.8512' successfully parsed 2026-03-19 09:19:24 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:25 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:25 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:24.252623 End time: 2026-03-19 09:19:24.591668 2026-03-19 09:19:25 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:25 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:25 INFO tclean::::casa ########################################## 2026-03-19 09:19:25 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:25 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 ) 2026-03-19 09:19:25 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:25 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:25 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:25 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:25 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:25 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:25 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:25 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:25 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:25 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:25 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:25 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:25 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:25 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.01093 2026-03-19 09:19:25 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:25 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:25 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:25 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:25 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:25 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:25 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:25 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:25 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:25 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:26 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:26 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:26 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:26 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:26 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:26 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:26 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:26 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:26 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:26 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:26 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:24.609434 End time: 2026-03-19 09:19:25.899312 2026-03-19 09:19:26 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:26 INFO tclean::::casa ########################################## 2026-03-19 09:19:26 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:26 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:26 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) 2026-03-19 09:19:26 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:26 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:26 2026****** 2026-03-19 09:19:26 INFO ImageFitter::fit+ 2026-03-19 09:19:26 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:26 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:26 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:26 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:26 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:26 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:26 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:26 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:26 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:26 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:26 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) 2026-03-19 09:19:26 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116879 Jy 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126495 Jy 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999999 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- ra: 127.999990 +/- 0.000127 pixels 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:26 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:26 INFO imstat::::casa ########################################## 2026-03-19 09:19:26 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:26 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 ) 2026-03-19 09:19:26 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:26 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:26 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:26 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:26 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:26 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) 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:26 INFO imstat:::: Values --- 2026-03-19 09:19:26 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:26 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:26 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- minimum value [min]: -7.77853e-05 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:26 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:26 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:26 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:26 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:26 INFO imstat:::: Statistics --- 2026-03-19 09:19:26 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- Median of the pixel values [median]: -1.86679e-05 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73586e-05 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- IQR [quartile]: 3.56112e-05 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- First quartile [q1]: -3.45109e-05 Jy/beam 2026-03-19 09:19:26 INFO imstat:::: -- Third quartile [q3]: 1.10039e-06 Jy/beam 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:26 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:26 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 2026-03-19 09:19:26 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:25.941711 End time: 2026-03-19 09:19:25.961892 2026-03-19 09:19:26 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:26 INFO imstat::::casa ########################################## 2026-03-19 09:19:26 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:26 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:26 INFO phaseshift::::casa phaseshift( vis='sim_data.ms', outputvis='sim_data_pshift.ms', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='B1950_VLA 5.201492224rad 02:39:52.3901' ) 2026-03-19 09:19:26 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:26 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:26 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:26 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:26 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:26 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:26 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:26 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:26 INFO MSTransformManager::open Select data 2026-03-19 09:19:26 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:26 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 ".". 2026-03-19 09:19:26 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 5.201492224rad 02:39:52.3901' successfully parsed 2026-03-19 09:19:26 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:26 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:26 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:25.973662 End time: 2026-03-19 09:19:26.402711 2026-03-19 09:19:26 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:26 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:26 INFO tclean::::casa ########################################## 2026-03-19 09:19:26 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:26 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 ) 2026-03-19 09:19:26 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:26 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:26 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:27 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:27 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:27 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:27 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:27 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:27 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:27 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:27 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:27 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:27 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:27 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.016878 2026-03-19 09:19:27 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:27 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:27 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:27 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:27 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:27 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:27 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:27 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:27 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:27 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852551156654954, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985255, CycleNiter=2, Gain=0.3 2026-03-19 09:19:28 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:28 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:28 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:28 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:28 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:28 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:28 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:28 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:28 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:28 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:26.432180 End time: 2026-03-19 09:19:27.848506 2026-03-19 09:19:28 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:28 INFO tclean::::casa ########################################## 2026-03-19 09:19:28 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:28 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:28 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) 2026-03-19 09:19:28 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:28 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:28 2026****** 2026-03-19 09:19:28 INFO ImageFitter::fit+ 2026-03-19 09:19:28 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:28 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:28 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:28 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:28 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:28 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:28 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:28 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:28 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:28 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:28 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) 2026-03-19 09:19:28 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116885 Jy 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126501 Jy 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999999 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000034 +/- 0.000777 arcsec 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- ra: 127.999990 +/- 0.000127 pixels 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- dec: 127.999963 +/- 0.000097 pixels 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 250 marcsec 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:28 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:28 INFO imstat::::casa ########################################## 2026-03-19 09:19:28 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:28 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 ) 2026-03-19 09:19:28 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:28 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:28 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:28 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:28 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:28 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) 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.865, I, 999981612.9Hz 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.889, I, 999981612.9Hz 2026-03-19 09:19:28 INFO imstat:::: Values --- 2026-03-19 09:19:28 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:28 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:28 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- minimum value [min]: -7.78268e-05 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:28 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:28 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:28 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:28 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:28 INFO imstat:::: Statistics --- 2026-03-19 09:19:28 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- Median of the pixel values [median]: -1.8675e-05 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73782e-05 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- IQR [quartile]: 3.56598e-05 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- First quartile [q1]: -3.45364e-05 Jy/beam 2026-03-19 09:19:28 INFO imstat:::: -- Third quartile [q3]: 1.12335e-06 Jy/beam 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:28 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:28 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 2026-03-19 09:19:28 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:27.917504 End time: 2026-03-19 09:19:27.943916 2026-03-19 09:19:28 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:28 INFO imstat::::casa ########################################## 2026-03-19 09:19:28 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:28 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:28 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' ) 2026-03-19 09:19:28 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:28 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:28 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:28 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:28 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:28 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:28 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:28 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:28 INFO MSTransformManager::open Select data 2026-03-19 09:19:28 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:28 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:28 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 5.201492224rad 39.968292000deg' successfully parsed 2026-03-19 09:19:28 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:28 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:28 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:27.959122 End time: 2026-03-19 09:19:28.351558 2026-03-19 09:19:28 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:28 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:28 INFO tclean::::casa ########################################## 2026-03-19 09:19:28 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:28 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 ) 2026-03-19 09:19:28 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:28 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:28 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:28 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:28 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:28 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:28 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:28 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:28 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:28 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:28 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:29 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:29 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.013633 2026-03-19 09:19:29 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:29 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:29 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:29 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:29 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:29 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852556977421045, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:29 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:29 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:29 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:30 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:30 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:30 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:30 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:30 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:30 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:30 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:28.369851 End time: 2026-03-19 09:19:29.754817 2026-03-19 09:19:30 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:30 INFO tclean::::casa ########################################## 2026-03-19 09:19:30 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:30 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) 2026-03-19 09:19:30 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:30 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:30 2026****** 2026-03-19 09:19:30 INFO ImageFitter::fit+ 2026-03-19 09:19:30 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:30 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:30 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:30 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:30 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:30 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:30 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:30 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:30 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:30 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:30 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) 2026-03-19 09:19:30 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116879 Jy 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126495 Jy 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999999 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000003 +/- 0.000777 arcsec 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- ra: 127.999990 +/- 0.000127 pixels 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- dec: 127.999997 +/- 0.000097 pixels 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:30 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:30 INFO imstat::::casa ########################################## 2026-03-19 09:19:30 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:30 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 ) 2026-03-19 09:19:30 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:30 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:30 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:30 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:30 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:30 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) 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:30 INFO imstat:::: Values --- 2026-03-19 09:19:30 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:30 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:30 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- minimum value [min]: -7.77853e-05 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:30 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:30 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:30 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:30 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:30 INFO imstat:::: Statistics --- 2026-03-19 09:19:30 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- Median of the pixel values [median]: -1.86679e-05 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73586e-05 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- IQR [quartile]: 3.56112e-05 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- First quartile [q1]: -3.45109e-05 Jy/beam 2026-03-19 09:19:30 INFO imstat:::: -- Third quartile [q3]: 1.10039e-06 Jy/beam 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:30 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:30 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 2026-03-19 09:19:30 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:29.807098 End time: 2026-03-19 09:19:29.827938 2026-03-19 09:19:30 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:30 INFO imstat::::casa ########################################## 2026-03-19 09:19:30 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:30 INFO phaseshift::::casa ##### Begin Task: phaseshift ##### 2026-03-19 09:19:30 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' ) 2026-03-19 09:19:30 INFO MSTransformManager::parseMsSpecParams Input file name is sim_data.ms 2026-03-19 09:19:30 INFO MSTransformManager::parseMsSpecParams Data column is ALL 2026-03-19 09:19:30 INFO MSTransformManager::parseMsSpecParams Output file name is sim_data_pshift.ms 2026-03-19 09:19:30 INFO MSTransformManager::parseMsSpecParams Re-index is disabled 2026-03-19 09:19:30 INFO MSTransformManager::parsePhaseShiftParams Phase shifting via TVI with support for large offset/angle 2026-03-19 09:19:30 INFO MSTransformManager::colCheckInfo Adding DATA column to output MS from input DATA column 2026-03-19 09:19:30 INFO MSTransformManager::colCheckInfo Adding CORRECTED_DATA column to output MS from input CORRECTED_DATA column 2026-03-19 09:19:30 INFO MSTransformManager::colCheckInfo Adding MODEL_DATA column to output MS from input MODEL_DATA column 2026-03-19 09:19:30 INFO MSTransformManager::open Select data 2026-03-19 09:19:30 INFO MSTransformManager::createOutputMSStructure Create output MS structure 2026-03-19 09:19:30 INFO PhaseShiftingTVI::parsePhasecenter Interpreting phasecenter as a single string, to be applied to all input (selected) fields. 2026-03-19 09:19:30 INFO PhaseShiftingTVI::checkPhaseCenterStr Phase center 'B1950_VLA 5.201492224rad 0.697578292rad' successfully parsed 2026-03-19 09:19:30 INFO phaseshift::::casa Shift phase center 2026-03-19 09:19:30 INFO phaseshift::::casa Updating the FIELD subtable of the output MeasurementSet with shifted phase centers 2026-03-19 09:19:30 INFO phaseshift::::casa Task phaseshift complete. Start time: 2026-03-19 09:19:29.840891 End time: 2026-03-19 09:19:30.303239 2026-03-19 09:19:30 INFO phaseshift::::casa ##### End Task: phaseshift ##### 2026-03-19 09:19:30 INFO phaseshift::::casa ########################################## 2026-03-19 09:19:30 INFO tclean::::casa ########################################## 2026-03-19 09:19:30 INFO tclean::::casa ##### Begin Task: tclean ##### 2026-03-19 09:19:30 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 ) 2026-03-19 09:19:30 INFO tclean::::casa Verifying Input Parameters 2026-03-19 09:19:30 INFO SynthesisImagerVi2::selectData MS : sim_data_pshift.ms | [Opened in readonly mode] 2026-03-19 09:19:30 INFO SynthesisImagerVi2::selectData NRows selected : 6318 2026-03-19 09:19:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:30 INFO SynthesisImagerVi2::defineImage Define image coordinates for [im_post_phaseshift] : 2026-03-19 09:19:30 INFO SynthesisImagerVi2::defineImage Impars: start 2026-03-19 09:19:30 INFO SynthesisImagerVi2::defineImage Shape: [256, 256, 1, 1] Spectral: [9.99982e+08] at [0] with increment [1e+08] 2026-03-19 09:19:30 INFO SynthesisImagerVi2::defineImage Set Gridding options for [im_post_phaseshift] with ftmachine : gridft 2026-03-19 09:19:30 INFO SynthesisImagerVi2::nSubCubeFitInMemory Required memory: 0.003777 GB. Available mem.: 10.92 GB (rc, mem. fraction: 80%, memory: -) => Subcubes: 1. Processes on node: 1. 2026-03-19 09:19:30 INFO SynthesisImagerVi2::weight() Set imaging weights : Natural weighting 2026-03-19 09:19:30 INFO task_tclean::SynthesisDeconvolver::setupDeconvolution Set Deconvolution Options for [im_post_phaseshift] : hogbom 2026-03-19 09:19:30 INFO task_tclean::SynthesisImager::makePSF ----------------------------------------------------------- Make PSF --------------------------------------------- 2026-03-19 09:19:31 INFO task_tclean::SIImageStore::calcSensitivity [im_post_phaseshift] Theoretical sensitivity (Jy/bm):0.00889601 2026-03-19 09:19:31 INFO task_tclean::SIImageStore::getPSFGaussian Time to fit Gaussian to PSF 0.024532 2026-03-19 09:19:31 INFO task_tclean::SIImageStore::printBeamSet Beam : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:31 INFO task_tclean::SynthesisImagerVi2::makePrimaryBeam vi2 : Evaluating Primary Beam model onto image grid(s) 2026-03-19 09:19:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 1 ------------------------------------- 2026-03-19 09:19:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0, over full image : 5 2026-03-19 09:19:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Initializing new mask to 1.0 for the full image 2026-03-19 09:19:31 INFO SynthesisDeconvolver::setupMask [im_post_phaseshift] Number of pixels in the clean mask : 65536 out of a total of 65536 pixels. [ 100 % ] 2026-03-19 09:19:31 INFO SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 5, over full image : 5 2026-03-19 09:19:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 20, 'cyclethreshold': 0.6050434112548828, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.605043, CycleNiter=20, Gain=0.3 2026-03-19 09:19:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=0->4.41176, peakres=5->0.588245, Reached cyclethreshold. 2026-03-19 09:19:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 6 iterations. 2026-03-19 09:19:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 2 ------------------------------------- 2026-03-19 09:19:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.588239, over full image : 0.588239 2026-03-19 09:19:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 14, 'cyclethreshold': 0.07118194550275803, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.0711819, CycleNiter=14, Gain=0.3 2026-03-19 09:19:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.41176->4.93079, peakres=0.588239->0.0692057, Reached cyclethreshold. 2026-03-19 09:19:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 12 iterations. 2026-03-19 09:19:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 3 ------------------------------------- 2026-03-19 09:19:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.0692054, over full image : 0.0692054 2026-03-19 09:19:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 8, 'cyclethreshold': 0.008374442346394062, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.00837444, CycleNiter=8, Gain=0.3 2026-03-19 09:19:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->6 [6], model=4.93079->4.99185, peakres=0.0692054->0.00814194, Reached cyclethreshold. 2026-03-19 09:19:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 18 iterations. 2026-03-19 09:19:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 4 ------------------------------------- 2026-03-19 09:19:31 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00814203, over full image : 0.00814203 2026-03-19 09:19:31 INFO tclean::::casa Minor Cycle controls : {'cycleniter': 2, 'cyclethreshold': 0.0009852559305727482, 'loopgain': 0.30000001192092896, 'nsigma': 0.0, 'thresholdreached': False} 2026-03-19 09:19:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] Run Hogbom minor-cycle | CycleThreshold=0.000985256, CycleNiter=2, Gain=0.3 2026-03-19 09:19:31 INFO SDAlgorithmBase::deconvolve [im_post_phaseshift] iters=0->2 [2], model=4.99185->4.9972, peakres=0.00814203->0.00279272, Reached cycleniter. 2026-03-19 09:19:31 INFO grpcInteractiveCleanManager::mergeCycleExecutionRecord Completed 20 iterations. 2026-03-19 09:19:31 INFO task_tclean::SynthesisImager::executeMajorCycle ----------------------------------------------------------- Run Major Cycle 5 ------------------------------------- 2026-03-19 09:19:32 INFO task_tclean::SynthesisDeconvolver::initMinorCycle Absolute Peak residual within mask : 0.00279238, over full image : 0.00279238 2026-03-19 09:19:32 INFO tclean::::casa Reached global stopping criterion : iteration limit 2026-03-19 09:19:32 INFO tclean::::casa getSummary call: fullsummary=False 2026-03-19 09:19:32 INFO SDAlgorithmBase::restore [im_post_phaseshift] : Restoring model image. 2026-03-19 09:19:32 INFO SIImageStore::restore Beam for chan : 0 : 88.7245 arcsec, 77.571 arcsec, 89.1868 deg 2026-03-19 09:19:32 INFO tclean::::casa Searching for images with prefix 'im_post_phaseshift'... Found these, writing history into them: ['im_post_phaseshift.model', 'im_post_phaseshift.mask', 'im_post_phaseshift.sumwt', 'im_post_phaseshift.image', 'im_post_phaseshift.pb', 'im_post_phaseshift.residual', 'im_post_phaseshift.psf'] 2026-03-19 09:19:32 INFO tclean::::casa Task tclean complete. Start time: 2026-03-19 09:19:30.334207 End time: 2026-03-19 09:19:31.716059 2026-03-19 09:19:32 INFO tclean::::casa ##### End Task: tclean ##### 2026-03-19 09:19:32 INFO tclean::::casa ########################################## 2026-03-19 09:19:32 INFO ImageFitter::_finishConstruction No estimates file specified, so will attempt to find and fit one gaussian. 2026-03-19 09:19:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:32 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) 2026-03-19 09:19:32 INFO ImageFitter::fit noise FWHM not specified, so uncertainties will be computed using the beam geometric mean FWHM as the pixel noise correlation FWHM 2026-03-19 09:19:32 INFO ImageFitter::fit ****** Fit performed at Thu Mar 19 09:19:32 2026****** 2026-03-19 09:19:32 INFO ImageFitter::fit+ 2026-03-19 09:19:32 INFO ImageFitter::fit+ Input parameters --- 2026-03-19 09:19:32 INFO ImageFitter::fit+ --- imagename: /home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_phaseshift_casashell/im_post_phaseshift.image 2026-03-19 09:19:32 INFO ImageFitter::fit+ --- region: 2026-03-19 09:19:32 INFO ImageFitter::fit+ --- channel: 0 2026-03-19 09:19:32 INFO ImageFitter::fit+ --- stokes: I 2026-03-19 09:19:32 INFO ImageFitter::fit+ --- mask: 2026-03-19 09:19:32 INFO ImageFitter::fit+ --- include pixel range: [] 2026-03-19 09:19:32 INFO ImageFitter::fit+ --- exclude pixel range: [] 2026-03-19 09:19:32 INFO ImageFitter::_fitsky Fitter was able to find a solution in 7 iterations. 2026-03-19 09:19:32 INFO ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:32 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) 2026-03-19 09:19:32 INFO ImageMaskAttacher::makeMask Created mask `mask0' 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop *** Details of fit for channel number 0 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Number of pixels used in fit: 441 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Input and residual image statistics (to be used as a rough guide only as to goodness of fit) 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of input image: 1.29486 Jy 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- Standard deviation of residual image: 0.000116869 Jy 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- RMS of input image: 1.85675 Jy 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- RMS of residual image: 0.000126485 Jy 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Fit on im_post_phaseshift.image component 0 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Position --- 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- ra: 19:53:49.999999 +/- 0.000089 s (0.001016 arcsec along great circle) 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- dec: +040.06.00.000008 +/- 0.000777 arcsec 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- ra: 127.999990 +/- 0.000127 pixels 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- dec: 127.999992 +/- 0.000097 pixels 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Image component size (convolved with beam) --- 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 1.478829 +/- 0.000040 arcmin 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 1.292924 +/- 0.000030 arcmin 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.1862 +/- 0.0071 deg 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Clean beam size --- 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 88.72 arcsec 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 77.57 arcsec 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- position angle: 89.19 deg 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Image component size (deconvolved from beam) --- 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- major axis FWHM: 967 +/- 249 marcsec 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- minor axis FWHM: 829 +/- 378 marcsec 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- position angle: 85 +/- 73 deg 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Flux --- 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- Integrated: 5.00036 +/- 0.00022 Jy 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- Peak: 4.99978 +/- 0.00013 Jy/beam 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- Polarization: I 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ Spectrum --- 2026-03-19 09:19:32 INFO ImageFitter::_fitLoop+ --- frequency: 999.9816 MHz (29.97980 cm) 2026-03-19 09:19:32 INFO imstat::::casa ########################################## 2026-03-19 09:19:32 INFO imstat::::casa ##### Begin Task: imstat ##### 2026-03-19 09:19:32 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 ) 2026-03-19 09:19:32 INFO imstat::CasacRegionManager::fromBCS No directional region specified. Using full positional plane. 2026-03-19 09:19:32 INFO imstat::CasacRegionManager::fromBCS Using all spectral channels. 2026-03-19 09:19:32 INFO imstat::CasacRegionManager::fromBCS Using polarizations ALL 2026-03-19 09:19:32 INFO imstat::image::statistics Determining stats for image im_post_phaseshift.image 2026-03-19 09:19:32 INFO imstat::ImageRegion::fromRecord Selected bounding box : 2026-03-19 09:19:32 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) 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::_logStartup Statistics calculated using Classic algorithm 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::_logStartup Regions --- 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (pixel) [blc]: [0, 0, 0, 0] 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (pixel) [trc]: [255, 255, 0, 0] 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::_logStartup -- bottom-left corner (world) [blcf]: 19:55:18.876, +39.48.53.864, I, 999981612.9Hz 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::_logStartup -- top-right corner (world) [trcf]: 19:52:21.081, +40.22.53.888, I, 999981612.9Hz 2026-03-19 09:19:32 INFO imstat:::: Values --- 2026-03-19 09:19:32 INFO imstat:::: -- flux density [flux]: 4.99436 Jy 2026-03-19 09:19:32 INFO imstat:::: -- number of points [npts]: 65536 2026-03-19 09:19:32 INFO imstat:::: -- maximum value [max]: 5 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- minimum value [min]: -7.77956e-05 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- position of max value (pixel) [maxpos]: [128, 128, 0, 0] 2026-03-19 09:19:32 INFO imstat:::: -- position of min value (pixel) [minpos]: [77, 84, 0, 0] 2026-03-19 09:19:32 INFO imstat:::: -- position of max value (world) [maxposf]: 19:53:50.000, +40.06.00.000, I, 999981612.9Hz 2026-03-19 09:19:32 INFO imstat:::: -- position of min value (world) [minposf]: 19:54:25.508, +40.00.07.661, I, 999981612.9Hz 2026-03-19 09:19:32 INFO imstat:::: -- Sum of pixel values [sum]: 608.565 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- Sum of squared pixel values [sumsq]: 1523.18 Jy/beam.Jy/beam 2026-03-19 09:19:32 INFO imstat:::: Statistics --- 2026-03-19 09:19:32 INFO imstat:::: -- Mean of the pixel values [mean]: 0.00928596 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- Variance of the pixel values : 0.023156 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- Standard deviation of the Mean [sigma]: 0.152171 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- Root mean square [rms]: 0.152453 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- Median of the pixel values [median]: -1.86648e-05 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- Median of the deviations [medabsdevmed]: 1.73536e-05 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- IQR [quartile]: 3.5639e-05 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- First quartile [q1]: -3.45152e-05 Jy/beam 2026-03-19 09:19:32 INFO imstat:::: -- Third quartile [q3]: 1.12373e-06 Jy/beam 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::statistics Sum column unit = Jy/beam 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::statistics+ Mean column unit = Jy/beam 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::statistics+ Std_dev column unit = Jy/beam 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::statistics+ Minimum column unit = Jy/beam 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::statistics+ Maximum column unit = Jy/beam 2026-03-19 09:19:32 INFO imstat::ImageStatsCalculator::statistics Npts Sum Mean Rms Std_dev Minimum Maximum 2026-03-19 09:19:32 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 2026-03-19 09:19:32 INFO imstat::::casa Task imstat complete. Start time: 2026-03-19 09:19:31.756520 End time: 2026-03-19 09:19:31.776871 2026-03-19 09:19:32 INFO imstat::::casa ##### End Task: imstat ##### 2026-03-19 09:19:32 INFO imstat::::casa ########################################## . ---------------------------------------------------------------------- Ran 26 tests in 350.943s OK Generating XML reports...