ztf.detectionivo://x-unregistred/ztf/ztf_lowercase/detectionALeRCE (Automatic Learning for the Rapid Classification of Events)ALeRCE Teamhttps://tap.alerce.online/favicon.png2026-06-10T02:31:00ZALeRCE Team

Beauchef 851, Edificio Norte, piso 6. Santiago, Chile.

alerce.broker@gmail.comastronomy, objectsZTFtransientstime-series Individual detections for each ZTF object including photometric measurements, RealBogus quality scores, corrected magnitudes, and image quality flags.http://tap.alerce.online/tableinfo/ztf.detectionztf Legacy ZTF astronomical catalog containing objects, detections, photometric measurements, classifications, and cross-matches from the Zwicky Transient Facility (ZTF) survey, as processed by the ALeRCE broker pipeline.ztf.detection Individual detections for each ZTF object including photometric measurements, RealBogus quality scores, corrected magnitudes, and image quality flags.candidCandidate identifier from ZTF alert streammeta.idlongindexedprimaryoidObject identifiermeta.id;srccharindexedprimarymjdModified Julian Date of observationdtime.epochdoublefidFilter identifier (1=g, 2=r, 3=i)meta.id;instr.filterintpidProcessing identifiermeta.iddoublediffmaglim5-sigma limiting magnitude in difference imagemagphot.mag;stat.maxfloatnullableisdiffposSign of flux in difference image (1=positive, -1=negative)meta.codeintnidNight identifiermeta.idintnullableraRight ascension of candidate (ICRS)degpos.eq.ra;meta.maindoubleindexeddecDeclination of candidate (ICRS)degpos.eq.dec;meta.maindoubleindexedmagpsfMagnitude from PSF-fit photometrymagphot.magfloatsigmapsf1-sigma uncertainty in PSF-fit magnitudemagstat.error;phot.magfloatmagapAperture magnitude (small aperture, ~2 arcsec radius)magphot.magfloatnullablesigmagap1-sigma uncertainty in small aperture magnitudemagstat.error;phot.magfloatnullabledistnrDistance to nearest source in reference imagearcsecpos.angDistancefloatnullablerbRealBogus quality score (0=bogus, 1=real)stat.probability;src.classfloatnullablerbversionRealBogus classifier versionmeta.versioncharnullabledrbDeep learning RealBogus quality scorestat.probability;src.classfloatnullabledrbversionDeep RealBogus classifier versionmeta.versioncharnullablemagapbigAperture magnitude (large aperture, ~5 arcsec radius)magphot.magfloatnullablesigmagapbig1-sigma uncertainty in large aperture magnitudemagstat.error;phot.magfloatnullablerfidReference image field identifiermeta.idintnullablemagpsf_corrCorrected PSF-fit magnitude (host-galaxy subtracted)magphot.magfloatnullablesigmapsf_corr1-sigma uncertainty in corrected PSF magnitudemagstat.error;phot.magfloatnullablesigmapsf_corr_extExtended uncertainty including systematics in corrected PSF magnitudemagstat.error;phot.magfloatnullablecorrectedWhether photometric correction was applied to this detectionmeta.code.qualbooleandubiousFlag indicating a potentially unreliable detectionmeta.code.qualbooleanparent_candidCandidate identifier of the parent detectionmeta.id;meta.parentlongnullablehas_stampWhether a postage stamp image is available for this detectionmeta.codebooleanstep_id_corrStep identifier for the photometric correction pipelinemeta.idchar