VLA cube pipeline ingestion, display and download.

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) for continuum and primary beam and mask images for cubes:

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

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

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

Group level

weblog.tgz - tarred and gzipped weblog

pipeline-<YYYMMDDTXXXXXX> - untarred weblog

casa_pipescript.py - pipeline command script

casa_commands.log - list of equivalent CASA commands.

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. In some cases of wide fractional bandwidth CASA may write the beams to a FITS table extension, in which case the resolution of the of the lowest frequency plane (resolution varies with frequency, most users will convolve to the lowest resolution) is the one to use: will need a new story for this case, in the meantime BMAJ and BMIN are set to zero if they are not present in the header.
• start time: DATE-OBS from FITS file
• end time: DATE-END from  FITS file
• minimum frequency 
• maximum frequency 
• spectral resolution (spectral channel width (Hz); CDELT3 in the FITS header): will need a new story
• project 
• polarization types: I 

Display in the archive

One row per primary cube image product and one row per primary continuum image product.

TAP service

As 2D images, but include channel width when it becomes available.

Download (interactive)

As continuum. CARTA viewing should also work for continuum images, CARTA will know how to display CASA cubes.