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Line processing recipe, should also be templateable to select specific spws for line processing.

Main issues to overcome:

• RFI Flagging of spectral lines
• Statwt downweighting spectral lines
• Hanning smoothing lowers spectral resolution

Assumptions:

1. The pipeline is able to make use of different MS files in different tasks to facilitate continuum and line processing.

Example Spectral line recipe:

• hifv_importdata
• hifv_hanning(spw='')
  
  • can take spw input for line processing, hanning smooth certain spws, leave other unsmoothed
  • uses ms.hanningsmooth tool rather than mstransform
• hifv_flagdata
• hifv_vlasetjy
• hifv_priorcals
• hifv_syspower
• hifv_testBPdcals
• hifv_checkflag
• hifv_semiFinalBPdcals
• hifv_checkflag
• hifv_solint
• hifv_fluxboot
• hifv_finalcals
• hifv_applycals
• hifv_checkflag(checkflagmode='target-vla')
  • Task backs up flags before RFI flagging with clear unique name
  • e.g., flagmanager(mode='save',vis='20A-390.sb37850360.eb37919292.58894.32864972222.ms',versionname='before_rflag_statwt'),hifv_targetflag(intents='*TARGET*')
• hifv_statwt(pipelinemode="automatic")
  • Follwoing Following statwt, flags are backed up to save state following RFI flagging and statwt calculations
  • e.g., flagmanager(mode='save',vis='20A-390.sb37850360.eb37919292.58894.32864972222.ms',versionname='rfi_flagged_statwt')
• hifv_plotsummary(pipelinemode="automatic")
• hif_makeimlist(intent='PHASE,BANDPASS',specmode='cont')
• hif_makeimages(hm_masking='centralregion')
• hif_mstransform(pipelinemode="automatic")
  • Splits out a _cont.ms for continuum imaging
  • Save flags of the _target or _cont.ms
    • e.g.,flagmanager(mode='save',vis='20A-390.sb37850360.eb37919292.58894.32864972222_target.ms',versionname='rfi_flagged_statwt')
• NEW TASK: hifv_splitline
  • Can take SPW input to only split out specifc specific spws for line.ms
  • restore pre RFI flagging state to main ms
    • e.g.,flagmanager(mode='restore',vis='20A-390.sb37850360.eb37919292.58894.32864972222.ms',versionname='before_rflag_statwt')
  • split off non non-RFI flagged data to line_temp; main goal is to get an MS with the same shape as the _target.ms to get the flags for non-RFI flagged data
  • e.g., mstransform(vis='20A-390.sb37850360.eb37919292.58894.32864972222.ms',outputvis='20A-390.sb37850360.eb37919292.58894.32864972222_line.ms')
  • save flags from line MS without rfi flagging
    • e.g., flagmanager(mode='save',vis='20A-390.sb37850360.eb37919292.58894.32864972222_line.ms',versionname='before_rflag_statwt')
  • Restore flags to main ms:
    • e.g., flagmanager(mode='restore',vis='20A-390.sb37850360.eb37919292.58894.32864972222.ms',versionname='rfi_flagged_statwt')

...

• hif_makeimlist(specmode='cont')

  • Operates only on _cont.ms

• hif_makeimages(hm_masking='none', hm_cyclefactor=3.0)

  • Operates only on _cont.ms
  • All windows used, no cont.dat used for VLA continuum imaging

...

• hif_makeimlist(specmode='mfs', spw='', MS='line')
  • Operates on _line.ms

• hif_findcont

  • Operates on line.ms to fine find continuum regions
• hif_uvcontfit
  • Operates on _line.ms

• hif_uvcontsub

  • Operates on _line.ms
• hif_makeimlist(specmode='cube')
  • Operates on _line.ms
  • Needs updates for VLA to not use deconvolver='mtmfs'

• hif_makeimages

  • Makes line cubes with VLA spectral line heuristics

  • Operates on _line.ms

...