column_name description unit ucd utype datatype principal indexed
ra Right ascension of image center deg pos.eq.ra;meta.main double 1 0
dec Declination of image center deg pos.eq.dec;meta.main double 1 0
infobits Info bit flags meta.code int 1 0
field ZTF field number meta.id;obs.field int 1 1
ccdid CCD number (1..16) meta.id short 1 0
qid Quadrant ID (1..4) meta.id short 1 0
rcid Readout-channel ID (0..63) meta.id short 1 0
fid Filter ID meta.id;instr.filter short 1 0
filtercode Filter code (abbreviated name) meta.code;instr.filter char 1 0
pid Science product ID meta.id long 1 1
nid Day/night ID meta.id int 1 1
expid Exposure ID meta.id;obs.exposure int 1 1
itid Image type ID meta.id;obs.image short 1 0
imgtype Image type name meta.id;obs.image char 1 0
imgtypecode Single letter image type code meta.code.class;obs.image char 1 0
obsdate Observation UT date/time time.epoch;obs.exposure char 1 1
obsjd Observation Julian day d time.epoch;obs.exposure double 1 1
exptime Exposure time s time.duration;obs.exposure float 1 0
filefracday Integer (YYYYMMDDdddddd) used in product file names long 1 0
seeing Seeing FWHM arcsec instr.obsty.seeing;stat.fwhm float 1 0
airmass Telescope airmass obs.airMass float 1 0
moonillf Moon illuminated fraction arith.ratio float 1 0
moonesb Moon excess in sky brightness float 1 0
maglimit Magnitude limit mag phot.mag;stat.max float 1 0
crpix1 Reference pixel value for axis 1 pix pos.wcs.crpix float 1 0
crpix2 Reference pixel value for axis 2 pix pos.wcs.crpix float 1 0
crval1 Reference position right ascension at crpix1,crpix2 deg pos.wcs.crval double 1 0
crval2 Reference position declination at crpix1,crpix2 deg pos.wcs.crval double 1 0
cd11 CD matrix element 1,1 deg/pix pos.wcs.cdmatrix double 1 0
cd12 CD matrix element 1,2 deg/pix pos.wcs.cdmatrix double 1 0
cd21 CD matrix element 2,1 deg/pix pos.wcs.cdmatrix double 1 0
cd22 CD matrix element 2,2 deg/pix pos.wcs.cdmatrix double 1 0
ra1 Right ascension of first image corner deg pos.eq.ra double 1 0
dec1 Declination of first image corner deg pos.eq.dec double 1 0
ra2 Right ascension of second image corner deg pos.eq.ra double 1 0
dec2 Declination of second image corner deg pos.eq.dec double 1 0
ra3 Right ascension of third image corner deg pos.eq.ra double 1 0
dec3 Declination of third image corner deg pos.eq.dec double 1 0
ra4 Right ascension of fourth image corner deg pos.eq.ra double 1 0
dec4 Declination of fourth image corner deg pos.eq.dec double 1 0
ipac_pub_date UT date/time of raw product release time.release char 1 0
ipac_gid IPAC Group ID meta.id int 1 0
meta_id Metadata record ID meta.record long 0 1
poly Bounding polygon pos.outline char 0 1