Name                 Type                   Unit  Description
_healpix_29          int64                  none  "HEALPix order 29 pixel index."
_healpix_19          int64                  none  "HEALPix order 19 pixel index."
_healpix_9           int32                  none  "HEALPix order 9 pixel index."
objectid             int64                  none  "Unique Object Identifier. This is the "oid" that is returned by queries on the Objects Table. This ID can be used to retrieve additional metadata for an Object or lightcurve."
filterid             int8                   none  "Filter for the lightcurve photometry: 1 => g; 2 => r; 3 => i."
fieldid              int16                  none  "The survey Field Identifier. Lightcurves in DR24 are spread across 1,286 fields. This identifier can be used to retrieve additional archive metadata."
rcid                 int8                   none  "The readout-channel Identifier (or CCD-Quadrant index) that contains the object. The rcid runs from 0 to 63 over the ZTF focal plane (https://irsa.ipac.caltech.edu/data/ZTF/docs/common/ztf_focal_plane.jpg). In combination with fieldid, this can be used to retrieve additional archive metadata."
objra                float                  deg   "Object Right Ascension from the input Reference Image (seed) catalog (https://irsa.ipac.caltech.edu/data/ZTF/docs/releases/dr24/ztf_release_notes_dr24.pdf) corresponding to the fieldID, rcid, and filterid [decimal degrees]."
objdec               float                  deg   "Object Declination from the input Reference Image (seed) catalog (https://irsa.ipac.caltech.edu/data/ZTF/docs/releases/dr24/ztf_release_notes_dr24.pdf) corresponding to the fieldid, rcid, and filterid [decimal degrees]."
nepochs              int64                  none  "The number of observation epochs in the lightcurve for this object, included in this data release only."
lightcurve.hmjd      list<element: double>  none  "Heliocentric-based Modified Julian Date [days] corresponding to the middle of each exposure and approximate position of the object. The HMJD is derived from "HJD - 2400000.5" where HJD is the Heliocentric Julian Date. HMJD is double precision truncated to 5 decimal places in order to resolve high-cadence observations."
lightcurve.mag       list<element: float>   none  "Calibrated magnitude for a source with color g - r = 0 in the AB photometric system. See Cautionary Note #12 in Section 10 (https://irsa.ipac.caltech.edu/data/ZTF/docs/releases/dr24/ztf_release_notes_dr24.pdf)."
lightcurve.magerr    list<element: float>   none  "Corresponding 1-σ uncertainty in mag estimate; excludes the (usually small) uncertainty associated with the calibration zeropoint and possible systematics relative to external photometry catalogs (for example PS1)."
lightcurve.clrcoeff  list<element: float>   none  "Linear color coefficient term from photometric calibration that can be applied to the mag estimate if you know the AB g - r color of your source. See Cautionary Note #12 in Section 10 (https://irsa.ipac.caltech.edu/data/ZTF/docs/releases/dr24/ztf_release_notes_dr24.pdf)."
lightcurve.catflags  list<element: int32>   none  "Photometric/image quality flags encoded as bits (Section 9b, https://irsa.ipac.caltech.edu/data/ZTF/docs/releases/dr24/ztf_release_notes_dr24.pdf). In particular, you will always want to exclude observation epochs affected by clouds and/or the moon. These epochs have catflags = 32768 (decimal bit 15)."
Norder               uint8                  none  "Partition column. HEALPix order."
Dir                  uint64                 none  "Partition column. Directory level, equal to 10_000 * floor[Npix / 10_000]."