ZTF Detection Response

ZTF Detection Model

Name	Type	Description
oid	integer	Object identifier
measurement_id	integer	Measurement unique identifier
pid	integer	Processing ID for image
diffmaglim	number	5-sigma mag limit in difference image based on PSF-fit photometry [mag]
isdiffpos	integer	1: candidate is from positive (sci minus ref) subtraction; -1: candidate is from negative (ref minus sci) subtraction
nid	integer	Night ID
magpsf	number	Magnitude from PSF-fit photometry [mag]
sigmapsf	number	1-sigma uncertainty in magpsf [mag]
magap	number	Aperture mag using 8 pixel diameter aperture [mag]
sigmagap	number	1-sigma uncertainty in magap [mag]
distnr	number	Distance to nearest source in reference image PSF-catalog within 30 arcsec [pixels]
rb	number	RealBogus quality score; range is 0 to 1 where closer to 1 is more reliable
rbversion	string	Version of RealBogus model/classifier used to assign rb quality score
drb	number	RealBogus quality score from Deep-Learning-based classifier; range is 0 to 1 where closer to 1 is more reliable
drbversion	string	Version of Deep-Learning-based classifier model used to assign RealBogus (drb) quality score
magapbig	number	Aperture mag using 18 pixel diameter aperture [mag]
sigmagapbig	number	1-sigma uncertainty in magapbig [mag]
rfid	integer	Processing ID for reference image to facilitate archive retrieval
magpsf_corr	integer	Corrected PSF magnitude
sigmapsf_corr	integer	Error of the corrected PSF magnitude assuming no contribution from an extended component
sigmapsf_corr_ext	integer	Error of the corrected PSF magnitude assuming a contribution from an extended component
corrected	boolean	Whether the corrected photometry was applied
dubious	boolean	Whether the corrected photometry should be flagged
parent_candid	integer	Parent candid if alert coming from prv_detection (null if no parent)
has_stamp	boolean	Whether the detection has an associated image stamp triplet