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Products to be ingested

The VLA spectral line pipeline will make datacubes (RA, Dec, frequency axes) in addition to the continuum images. Each cube and continuum image should be a primary product, with its associated metadata, and take up one row in the results table. 

Primary image products

Per band, per target continuum tt0 (both regular and selfcal):

oussid.L1473maser_sci.K_band.cont.[regcal,selfcal].I.pbcor.tt0.fits

Per target, per spectral line spectral window cubes:

oussid.LkHA101maser_sci.spw[??].cube.[regcal,selfcal].I.pbcor.fits

Ancillary products

Image level:

Per band, per target spectral index, spectral index error, primary beam and mask images (both regular and selfcal):

oussid.LkHA101maser_sci.K_band.cont.[regcal.selfcal].I.alpha.fits

oussid.LkHA101maser_sci.K_band.cont.[regcal.selfcal].I.alpha.error.fits

oussid.LkHA101maser_sci.K_band.cont.[regcal.selfcal].I.pb.fits

oussid.LkHA101maser_sci.K_band.cont.[regcal.selfcal].I.mask.fits

Group level

weblog.tgz - tarred and gzipped weblog

pipeline-<YYYMMDDTXXXXXX> - untarred weblogplaceholder.catalog.csv - empty file, will eventually contain source list

casa_pipescript.py - pipeline command script

...

pipeline_manifest.xml - XML-formatted list of files

Note that if cal+img was run the usual set of calibration products will also be produced.

Product metadata

Product metadata should reflect the VO Obscore standard in terms of what we store, but fields can be named consistent with other image ingests:

  • Position: ra,dec of image center
  • Size: NAXIS1, NAXIS2 in pixels, from FITS file
  • Resolution: sqrt(BMAJ*BMIN), beam axial ratio BMAJ/BMIN of the lowest frequency plane (resolution varies with frequency, most users will convolve to the lowest resolution)
  • start time: DATE-OBS from FITS file
  • end time: DATE-END from  FITS file
  • minimum frequencyfrequency 
  • maximum frequencyfrequency 
  • spectral resolution (spectral channel width (Hz); CRDELT3 in the FITS header)
  • project 
  • polarization types: I 

...