Casa6

• 

  Rui Xue 01 May 2026 482ae866ae6419e230d03943b2b897e3cf410f8a

  CAS-14759: Restore pbmask for cube standard gridder via `calcmask`
  The previous performance optimization for the cube standard gridder
  bypassed normalizeprimarybeam() on the master node to avoid a slow,
  sequential plane-by-plane evaluation. However, this inadvertently skipped
  the generation of the `mask0` subtable on the `.pb` image, causing the
  pbmask to be missing from the dirty map.
  
  This commit restores the mask creation on the master node by using
  the `ia.calcmask()` tool. This preserves the majority
  performance gain from the previous optimization while correctly restoring
  the `pblimit`-based mask for downstream application.
  
  Additional optimizations:
  - Mask generation is skipped entirely if `pblimit < 0.0`, aligning with tclean logic
  - Cleaned up redundant imports inside the makePB function
  - Handled tool lifecycle with an explicit `_ia.done()` for safe memory management

  • casatasks/src/private/imagerhelpers/imager_base.py (version 482ae866ae6419e230d03943b2b897e3cf410f8a) (diffs)