eROSITA All-Sky Survey (First 6 Months) X-Ray (0.2-2.3 keV) Source Catalog

eROSITA All-Sky Survey (First 6 Months) X-Ray (0.2-2.3 keV) Source Catalog ERASS1MAIN ivo://nasa.heasarc/erass1main NASA/GSFC HEASARC Merloni et al. 2026-04-10 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite began surveying the sky in December 2019, with the aim of producing all-sky X-ray source lists and sky maps of an unprecedented depth. The authors present catalogs of both point-like and extended sources using the data acquired in the first six months of survey operations (eRASS1; completed June 2020) over the half sky whose proprietary data rights lie with the German eROSITA Consortium. With nearly 930000 entries detected in the most sensitive 0.2-2.3keV energy range, the eRASS1 main catalog increases the number of known X-ray sources in the published literature by more than 60%, and provides a comprehensive inventory of all classes of X-ray celestial objects, covering a wide range of physical processes. A smaller catalog, <a href="/W3Browse/erosita/erass1hard.html">eRASS1HARD</a>, contains all X-ray sources detected in the 2.3-5 keV band with detection likelihood DET_LIKE > 12. The 5466 sources detected in the less sensitive but harder 2.3-5keV band is the result of the first true imaging survey of the entire sky above 2keV. The sources in the hard catalog (only the strongly associated ones) have been linked to eRASS1HARD in this catalog. The reference paper presents methods to identify and flag potential spurious sources in the catalogs, which were applied for this work, and the authors tested and validated the astrometric accuracy via cross-comparison with other X-ray and multi-wavelength catalogs. They show that the number counts of X-ray sources in eRASS1 are consistent with those derived over narrower fields by past X-ray surveys of a similar depth, and they explore the number counts variation as a function of the location in the sky. Adopting a uniform all-sky flux limit (at 50% completeness) of F(0.5-2keV) > 5 x 10-14 erg/s/cm2, the authors estimate that the eROSITA all-sky survey resolves into individual sources about 20% of the cosmic X-ray background in the 1-2keV range. The catalogs form part of the first data release (DR1) of the SRG/eROSITA all-sky survey. Beyond the X-ray catalogs, DR1 contains all detected and calibrated event files, source products (light curves and spectra), and all-sky maps. The data files are linked to the table and also accessible from the <a href="/docs/srg/erosita/">HEASARC eROSITA</a> and <a href="https://erosita.mpe.mpg.de/dr1/">eROSITA-DE ERASS1</a> websites. The catalog uses the following designation for indicating the bands for the different measurement: <pre> Band Energy range (keV) 0,1 0.2 - 2.3 P1 0.2 - 0.5 P2 0.5 - 1.0 P3 1.0 - 2.0 P4 2.0 - 5.0 P5 5.0 - 8.0 P6 4.0 - 10.0 P7 5.1 - 6.1 P8 6.2 - 7.1 P9 7.2 - 8.2 S 0.5 - 2.0 </pre> This database table was ingested by the HEASARC in June 2024 and is based upon the <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/682/A34">CDS Catalog J/A+A/682/A34</a> file erass1-m.dat. In some cases, the HEASARC has altered the original field names, as per HEASARC conventions, and provides the original field names in square brackets. This is a service provided by NASA HEASARC . 2024A&A...682A..34M https://heasarc.gsfc.nasa.gov/W3Browse/all/erass1main.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=erass1main& GET text/xml 180 99999 true 56.5667556053122 -59.6623771515321 0.0833333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=erass1main GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_erass1main&Action=More+Options&Action=Parameter+Search&ConeAdd=1 SRG-EROSITA 0.0833333333333333 X-ray public erass1main eROSITA All-Sky Survey (First 6 Months) X-Ray (0.2-2.3 keV) Sour p5_flux_pos_err 1-Sigma Upper Flux Error in 5.0-8.0keV Band (ML_FLUX_UPERR_P5) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable srcpos_bps_flag Flag Indicates Source May Lie within an Overdense Region Near Bright Source meta.code short nullable b1_count_rate_error 1-Sigma Combined Count Rate Error in 0.2-2.3keV Band (ML_RATE_ERR_1) ct/s stat.error;phot.count;em.X-ray.soft double nullable p3_aperture_counts Total Counts Extracted within the Aperture in 1.0-2.0keV Band (APE_CTS_P3) ct phot.count;em.X-ray.soft int nullable srcpos_gc_flag Flag Indicates Source May Lie within an Overdense Region Near Galaxy Cluster meta.code short nullable b1_count_rate Source Count Rate in 0.2-2.3keV Band (ML_RATE_1) ct/s phot.count;em.X-ray.soft double nullable p7_eef Enclosed Energy Fraction in 5.1-6.1keV Band (ML_EEF_P7) instr.det.psf double nullable p6_aperture_exposure Exposure Map Value at the Given Position in the 4.0-10.0keV Band (APE_EXP_P6) s time.duration;obs.exposure double nullable ra_raw Uncorrected Right Ascension (RA_RAW) degree pos.eq.ra double nullable p6_flux_pos_err 1-Sigma Upper Flux Error in 4.0-10.0keV Band (ML_FLUX_UPERR_P6) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p3_bkg_counts Background at the Source Position in 1.0-2.0keV Band (ML_BKG_P3) erg/s/cm^2 instr.background double nullable p3_flux_neg_err 1-Sigma Lower Flux Error in 1.0-2.0keV Band (ML_FLUX_LOWERR_P3) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p5_exposure Vignetted Exposure Time at the Source Position in 5.0-8.0keV Band (ML_EXP_P5) s time.duration;obs.exposure double nullable hard_source_number Hard Catalog UID of Source with Strong Association or -UID If Weak Association meta.id char nullable p4_flux_neg_err 1-Sigma Lower Flux Error in 2.0-5.0keV Band (ML_FLUX_LOWERR_P4) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p1_exposure Vignetted Exposure Time at the Source Position in 0.2-0.5keV Band (ML_EXP_P1) s time.duration;obs.exposure double nullable p5_counts_neg_err 1-Sigma Lower Counts Error in 5.0-8.0keV Band (ML_CTS_LOWERR_P5) ct stat.error;phot.count;em.X-ray.medium double nullable ra_neg_err 1-Sigma Lower Uncertainty for RA (RA_LOWERR) arcsec stat.error;pos.eq.ra;meta.main double nullable p9_bkg_counts Background at the Source Position in 7.2-8.2keV Band (ML_BKG_P9) arcmin-2 instr.background;em.X-ray.medium double nullable p8_aperture_radius Extraction Radius in Pixels in the 6.2-7.1keV Band (APE_RADIUS_P8) pixel phys.angSize double nullable p9_flux_error 1-Sigma Combined Flux Error in 7.2-8.2keV Band (ML_FLUX_ERR_P9) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p8_exposure Vignetted Exposure Time at the Source Position in 6.2-7.1keV Band (ML_EXP_P8) s time.duration;obs.exposure double nullable b1_aperture_radius Extraction Radius in Pixels in the 0.2-2.3keV Band (APE_RADIUS_1) pixel phys.angSize double nullable p3_flux_pos_err 1-Sigma Upper Flux Error in 1.0-2.0keV Band (ML_FLUX_UPERR_P3) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p3_eef Enclosed Energy Fraction in 1.0-2.0keV Band (ML_EEF_P3) instr.det.psf double nullable p3_counts_neg_err 1-Sigma Lower Counts Error in 1.0-2.0keV Band (ML_CTS_LOWERR_P3) ct stat.error;phot.count;em.X-ray.soft double nullable p6_flux_neg_err 1-Sigma Lower Flux Error in 4.0-10.0keV Band (ML_FLUX_LOWERR_P6) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p8_count_rate_error 1-Sigma Combined Count Rate Error in 6.2-7.1keV Band (ML_RATE_ERR_P8) ct/s stat.error;phot.count;em.X-ray.medium double nullable p9_aperture_bkg_counts Background Counts Extracted within the Aperture in 7.2-8.2keV Band ct instr.background double nullable p9_flux_pos_err 1-Sigma Upper Flux Error in 7.2-8.2keV Band (ML_FLUX_UPERR_P9) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable source_extent_pos_err 1-Sigma Upper Uncertainty for Source Extent (EXT_UPERR) arcsec stat.error;phys.angSize double nullable p9_counts Source Net Counts in 7.2-8.2keV Band (ML_CTS_P9) ct phot.count;em.X-ray.medium double nullable p2_count_rate_neg_err 1-Sigma Lower Count Rate Error in 0.5-1.0keV Band (ML_RATE_LOWERR_P2) ct/s stat.error;phot.count;em.X-ray.soft double nullable p8_detect_likelihood Detection Likelihood in 6.2-7.1keV Band (DET_LIKE_P8) stat.likelihood double nullable optical_flag Boolean Flag Indicates Source Matched within 15-arcsec of a Bright Optical Star meta.code short nullable p4_aperture_bkg_counts Background Counts Extracted within the Aperture in 2.0-5.0keV Band ct instr.background;em.X-ray.medium double nullable p6_counts_pos_err 1-Sigma Upper Counts Error in 4.0-10.0keV Band (ML_CTS_UPERR_P6) ct stat.error;phot.count;em.X-ray.medium double nullable p2_flux_error 1-Sigma Combined Flux Error in 0.5-1.0keV Band (ML_FLUX_ERR_P2) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable b1_counts_pos_err 1-Sigma Upper Counts Error in 0.2-2.3keV Band (ML_CTS_UPERR_1) ct stat.error;phot.count;em.X-ray.soft double nullable b0_detect_likelihood Detection Likelihood in 0.2-2.3keV Band (DET_LIKE_0) stat.likelihood double nullable source_extent_error 1-Sigma Error in Source Extent (EXT_ERR) arcsec stat.error;phys.angSize double nullable no_radec_err_flag Boolean Flag Indicates Source Contained No Position Uncertainty meta.code short nullable p1_flux_neg_err 1-Sigma Lower Flux Error in 0.2-0.5keV Band (ML_FLUX_LOWERR_P1) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable name Official IAU Source Designation (1eRASS JHHMMSS.s+DDMMSS) meta.id;meta.main char nullable p4_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p8_count_rate Source Count Rate in 6.2-7.1keV Band (ML_RATE_P8) ct/s phot.count;em.X-ray.medium double nullable p3_exposure Vignetted Exposure Time at the Source Position in 1.0-2.0keV Band (ML_EXP_P3) s time.duration;obs.exposure double nullable s_aperture_counts Total Counts Extracted within the Aperture in 0.5-2.0keV Band (APE_CTS_S) ct phot.count;em.X-ray.soft int nullable p6_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable dec_neg_err 1-Sigma Lower Uncertainty for Declination (DEC_LOWERR) arcsec stat.error;pos.eq.dec;meta.main double nullable s_aperture_exposure Exposure Map Value at the Given Position in the 0.5-2.0keV Band (APE_EXP_S) s time.duration;obs.exposure double nullable p9_count_rate_pos_err 1-Sigma Upper Count Rate Error in 7.2-8.2keV Band (ML_RATE_UPERR_P9) ct/s stat.error;phot.count;em.X-ray.medium double nullable p5_aperture_radius Extraction Radius in Pixels in the 5.0-8.0keV Band (APE_RADIUS_P5) pixel phys.angSize double nullable p4_counts_neg_err 1-Sigma Lower Counts Error in 2.0-5.0keV Band (ML_CTS_LOWERR_P4) ct stat.error;phot.count;em.X-ray.medium double nullable p8_counts Source Net Counts in 6.2-7.1keV Band (ML_CTS_P8) ct phot.count;em.X-ray.medium double nullable p3_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p5_aperture_bkg_counts Background Counts Extracted within the Aperture in 5.0-8.0keV Band ct instr.background double nullable p8_count_rate_neg_err 1-Sigma Lower Count Rate Error in 6.2-7.1keV Band (ML_RATE_LOWERR_P8) ct/s stat.error;phot.count;em.X-ray.medium double nullable p2_counts_neg_err 1-Sigma Lower Counts Error in 0.5-1.0keV Band (ML_CTS_LOWERR_P2) ct stat.error;phot.count;em.X-ray.soft double nullable p1_aperture_exposure Exposure Map Value at the Given Position in the 0.2-0.5keV Band (APE_EXP_P1) s time.duration;obs.exposure double nullable p7_flux_error 1-Sigma Combined Flux Error in 5.1-6.1keV Band (ML_FLUX_ERR_P7) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p2_counts_pos_err 1-Sigma Upper Counts Error in 0.5-1.0keV Band (ML_CTS_UPERR_P2) ct stat.error;phot.count;em.X-ray.soft double nullable p3_detect_likelihood Detection Likelihood in 1.0-2.0keV Band (DET_LIKE_P3) stat.likelihood double nullable s_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p7_flux_neg_err 1-Sigma Lower Flux Error in 5.1-6.1keV Band (ML_FLUX_LOWERR_P7) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p1_bkg_counts Background at the Source Position in 0.2-0.5keV Band (ML_BKG_P1) arcmin-2 instr.background double nullable p5_count_rate_neg_err 1-Sigma Lower Count Rate Error in 5.0-8.0keV Band (ML_RATE_LOWERR_P5) ct/s stat.error;phot.count;em.X-ray.medium double nullable p4_flux_error 1-Sigma Combined Flux Error in 2.0-5.0keV Band (ML_FLUX_ERR_P4) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p4_aperture_counts Total Counts Extracted within the Aperture in 2.0-5.0keV Band (APE_CTS_P4) ct phot.count;em.X-ray.medium int nullable p9_eef Enclosed Energy Fraction in 7.2-8.2keV Band (ML_EEF_P9) instr.det.psf double nullable p3_counts Source Net Counts in 1.0-2.0keV Band (ML_CTS_P3) ct phot.count;em.X-ray.soft double nullable p6_counts_error 1-Sigma Combined Counts Error in 4.0-10.0keV Band (ML_CTS_ERR_P6) ct stat.error;phot.count;em.X-ray.medium double nullable srcpos_scl_flag Flag Indicates Source May Lie within an Overdense Region Near Stellar Cluster meta.code short nullable b1_aperture_exposure Exposure Map Value in 0.2-2.3keV Band at the Given Position (APE_EXP_1) s time.duration;obs.exposure double nullable p2_flux Source Flux in 0.5-1.0keV Band (ML_FLUX_P2) erg/s/cm^2 phot.flux;em.X-ray.soft double nullable srcpos_lga_flag Flag Indicates Source May Lie within an Overdense Region Near Local Large Galaxy meta.code short nullable p5_flux_neg_err 1-Sigma Lower Flux Error in 5.0-8.0keV Band (ML_FLUX_LOWERR_P5) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p1_count_rate_pos_err 1-Sigma Upper Count Rate Error in 0.2-0.5keV Band (ML_RATE_UPERR_P1) ct/s stat.error;phot.count;em.X-ray.soft double nullable p1_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p2_bkg_counts Background at the Source Position in 0.5-1.0keV Band (ML_BKG_P2) arcmin-2 instr.background double nullable b1_eef Enclosed Energy Fraction in 0.2-2.3keV Band (ML_EEF_1) instr.det.psf double nullable detuid Unique Detection Identification (DETUID) meta.id char nullable dec Declination degree pos.eq.dec;meta.main double nullable p8_flux_error 1-Sigma Combined Flux Error in 6.2-7.1keV Band (ML_FLUX_ERR_P8) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p2_counts_error 1-Sigma Combined Counts Error in 0.5-1.0keV Band (ML_CTS_ERR_P2) ct stat.error;phot.count;em.X-ray.soft double nullable b1_counts_neg_err 1-Sigma Lower Counts Error in 0.2-2.3keV Band (ML_CTS_LOWERR_1) ct stat.error;phot.count;em.X-ray.soft double nullable p4_eef Enclosed Energy Fraction in 2.0-5.0keV Band (ML_EEF_P4) instr.det.psf double nullable p7_detect_likelihood Detection Likelihood in 5.1-6.1keV Band (DET_LIKE_P7) stat.likelihood double nullable p6_aperture_radius Extraction Radius in Pixels in the 4.0-10.0keV Band (APE_RADIUS_P6) pixel phys.angSize double nullable p4_flux Source Flux in 2.0-5.0keV Band (ML_FLUX_P4) erg/s/cm^2 phot.flux;em.X-ray.medium double nullable p1_counts Source Net Counts in 0.2-0.5keV Band (ML_CTS_P1) ct phot.count;em.X-ray.soft double nullable dec_pos_err 1-Sigma Upper Uncertainty for Declination (DEC_UPERR) arcsec stat.error;pos.eq.dec;meta.main double nullable extent_likelihood Extent Likelihood (EXT_LIKE) stat.likelihood double nullable p3_counts_error 1-Sigma Combined Counts Error in 1.0-2.0keV Band (ML_CTS_ERR_P3) ct stat.error;phot.count;em.X-ray.soft double nullable srcpos_snr_flag Flag Indicates Source May Lie within an Overdense Region Near Supernova Remnant meta.code short nullable p1_flux_error 1-Sigma Combined Flux Error in 0.2-0.5keV Band (ML_FLUX_ERR_P1) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p6_flux_error 1-Sigma Combined Flux Error in 4.0-10.0keV Band (ML_FLUX_ERR_P6) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p9_aperture_radius Extraction Radius in Pixels in the 7.2-8.2keV Band (APE_RADIUS_P9) pixel phys.angSize double nullable p5_flux Source Flux in 5.0-8.0keV Band (ML_FLUX_P5) erg/s/cm^2 phot.flux;em.X-ray.medium double nullable b1_counts Source Net Counts in 0.2-2.3keV Band (ML_CTS_1) ct phot.count;em.X-ray double nullable b1_count_rate_neg_err 1-Sigma Lower Count Rate Error in 0.2-2.3keV Band (ML_RATE_LOWERR_1) ct/s stat.error;phot.count;em.X-ray.soft double nullable p5_flux_error 1-Sigma Combined Flux Error in 5.0-8.0keV Band (ML_FLUX_ERR_P5) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable end_time Date/Time of the Last Observation of the Source (MJD_MAX) mjd time.end;obs double nullable p2_flux_pos_err 1-Sigma Upper Flux Error in 0.5-1.0keV Band (ML_FLUX_UPERR_P2) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p7_count_rate_pos_err 1-Sigma Upper Count Rate Error in 5.1-6.1keV Band (ML_RATE_UPERR_P7) ct/s stat.error;phot.count;em.X-ray.medium double nullable p9_flux_neg_err 1-Sigma Lower Flux Error in 7.2-8.2keV Band (ML_FLUX_LOWERR_P9) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p8_count_rate_pos_err 1-Sigma Upper Count Rate Error in 6.2-7.1keV Band (ML_RATE_UPERR_P8) ct/s stat.error;phot.count;em.X-ray.medium double nullable p6_count_rate Source Count Rate in 4.0-10.0keV Band (ML_RATE_P6) ct/s phot.count;em.X-ray.medium double nullable lii Galactic Longitude degree pos.galactic.lon double nullable p5_counts_pos_err 1-Sigma Upper Counts Error in 5.0-8.0keV Band (ML_CTS_UPERR_P5) ct stat.error;phot.count;em.X-ray.medium double nullable p3_flux Source Flux in 1.0-2.0keV Band (ML_FLUX_P3) erg/s/cm^2 phot.flux;em.X-ray.soft double nullable dec_raw Uncorrected Declination (DEC_RAW) degree pos.eq.dec double nullable p6_detect_likelihood Detection Likelihood in 4.0-10.0keV Band (DET_LIKE_P6) stat.likelihood double nullable p3_aperture_bkg_counts Background Counts Extracted within the Aperture in 1.0-2.0keV Band ct instr.background;em.X-ray.soft double nullable p6_aperture_bkg_counts Background Counts Extracted within the Aperture in 4.0-10.0keV Band ct instr.background double nullable p5_count_rate Source Count Rate in 5.0-8.0keV Band (ML_RATE_P5) ct/s phot.count;em.X-ray.medium double nullable ra_pos_err 1-Sigma Upper Uncertainty for RA (RA_UPERR) arcsec stat.error;pos.eq.ra;meta.main double nullable b1_flux_pos_err 1-Sigma Upper Uncertainty for Flux in 0.2-2.3keV Band (ML_FLUX_UPERR_1) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p9_aperture_counts Total Counts Extracted within the Aperture in 7.2-8.2keV Band (APE_CTS_P9) ct phot.count;em.X-ray.medium short nullable p5_counts Source Net Counts in 5.0-8.0keV Band (ML_CTS_P5) ct phot.count;em.X-ray.medium double nullable p8_flux_neg_err 1-Sigma Lower Flux Error in 6.2-7.1keV Band (ML_FLUX_LOWERR_P8) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p1_detect_likelihood Detection Likelihood in 0.2-0.5keV Band (DET_LIKE_P1) stat.likelihood double nullable p8_counts_neg_err 1-Sigma Lower Counts Error in 6.2-7.1keV Band (ML_CTS_LOWERR_P8) ct stat.error;phot.count;em.X-ray.medium double nullable source_number Sequential Identification Number for Each Source in the Catalog meta.id;src char nullable p6_count_rate_pos_err 1-Sigma Upper Count Rate Error in 4.0-10.0keV Band (ML_RATE_UPERR_P6) ct/s stat.error;phot.count;em.X-ray.medium double nullable p2_aperture_exposure Exposure Map Value at the Given Position in the 0.5-1.0keV Band (APE_EXP_P2) s time.duration;obs.exposure double nullable p9_count_rate_neg_err 1-Sigma Lower Count Rate Error in 7.2-8.2keV Band (ML_RATE_LOWERR_P9) ct/s stat.error;phot.count;em.X-ray.medium double nullable p2_count_rate Source Count Rate in 0.5-1.0keV Band (ML_RATE_P2) ct/s phot.count;em.X-ray.soft double nullable p6_bkg_counts Background at the Source Position in 4.0-10.0keV Band (ML_BKG_P6) arcmin-2 instr.background double nullable p3_flux_error 1-Sigma Combined Flux Error in 1.0-2.0keV Band (ML_FLUX_ERR_P3) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p4_count_rate_error 1-Sigma Combined Count Rate Error in 2.0-5.0keV Band (ML_RATE_ERR_P4) ct/s stat.error;phot.count;em.X-ray.medium double nullable time_onaxis Date/Time of the Observation of the Source Nearest to Optical Axis of Telescope mjd time.epoch double nullable p8_flux Source Flux in 6.2-7.1keV Band (ML_FLUX_P8) erg/s/cm^2 phot.flux;em.X-ray.medium double nullable p5_aperture_exposure Exposure Map Value at the Given Position in the 5.0-8.0keV Band (APE_EXP_P5) s time.duration;obs.exposure double nullable p7_counts_neg_err 1-Sigma Lower Counts Error in 5.1-6.1keV Band (ML_CTS_LOWERR_P7) ct stat.error;phot.count;em.X-ray.medium double nullable p7_aperture_radius Extraction Radius in Pixels in the 5.1-6.1keV Band (APE_RADIUS_P7) pixel phys.angSize double nullable b1_aperture_bkg_counts Background Counts Extracted within the Aperture in 0.2-2.3keV Band ct instr.background;em.X-ray.soft double nullable p7_count_rate_error 1-Sigma Combined Count Rate Error in 5.1-6.1keV Band (ML_RATE_ERR_P7) ct/s stat.error;phot.count;em.X-ray.medium double nullable p2_aperture_counts Total Counts Extracted within the Aperture in 0.5-1.0keV Band (APE_CTS_P2) ct phot.count;em.X-ray.soft int nullable p9_exposure Vignetted Exposure Time at the Source Position in 7.2-8.2keV Band (ML_EXP_P9) s time.duration;obs.exposure double nullable p3_count_rate_error 1-Sigma Combined Count Rate Error in 1.0-2.0keV Band (ML_RATE_ERR_P3) ct/s stat.error;phot.count;em.X-ray.soft double nullable p3_count_rate Source Count Rate in 1.0-2.0keV Band (ML_RATE_P3) ct/s phot.count;em.X-ray.soft double nullable p1_count_rate Source Count Rate in 0.2-0.5keV Band (ML_RATE_P1) ct/s phot.count;em.X-ray.soft double nullable p8_eef Enclosed Energy Fraction in 6.2-7.1keV Band (ML_EEF_P8) instr.det.psf double nullable p4_count_rate Source Count Rate in 2.0-5.0keV Band (ML_RATE_P4) ct/s phot.count;em.X-ray.medium double nullable b1_flux Source Flux in 0.2-2.3keV Band (ML_FLUX_1) erg/s/cm^2 phot.flux;em.X-ray.soft double nullable p8_counts_error 1-Sigma Combined Counts Error in 6.2-7.1keV Band (ML_CTS_ERR_P8) ct stat.error;phot.count;em.X-ray.medium double nullable "__x_ra_dec" System unit vector column double nullable b1_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p2_counts Source Net Counts in 0.5-1.0keV Band (ML_CTS_P2) ct phot.count;em.X-ray.soft double nullable p6_count_rate_neg_err 1-Sigma Lower Count Rate Error in 4.0-10.0keV Band (ML_RATE_LOWERR_P6) ct/s stat.error;phot.count;em.X-ray.medium double nullable p6_exposure Vignetted Exposure Time at the Source Position in 4.0-10.0keV Band (ML_EXP_P6) s time.duration;obs.exposure double nullable source_extent Source Extent Parameter (EXT) arcsec phys.angSize double nullable p6_aperture_counts Total Counts Extracted within the Aperture in 4.0-10.0keV Band (APE_CTS_P6) ct phot.count;em.X-ray.medium short nullable no_ext_err_flag Boolean Flag Indicates Source Contained No Extent Error meta.code short nullable p1_count_rate_neg_err 1-Sigma Lower Count Rate Error in 0.2-0.5keV Band (ML_RATE_LOWERR_P1) ct/s stat.error;phot.count;em.X-ray.soft double nullable p3_aperture_exposure Exposure Map Value at the Given Position in the 1.0-2.0keV Band (APE_EXP_P3) s time.duration;obs.exposure double nullable p1_counts_error 1-Sigma Combined Counts Error in 0.2-0.5keV Band (ML_CTS_ERR_P1) ct stat.error;phot.count;em.X-ray.soft double nullable p1_count_rate_error 1-Sigma Combined Count Rate Error in 0.2-0.5keV Band (ML_RATE_ERR_P1) ct/s stat.error;phot.count;em.X-ray.soft double nullable p5_counts_error 1-Sigma Combined Counts Error in 5.0-8.0keV Band (ML_CTS_ERR_P5) ct stat.error;phot.count;em.X-ray.medium double nullable p8_aperture_bkg_counts Background Counts Extracted within the Aperture in 6.2-7.1keV Band ct instr.background double nullable p2_eef Enclosed Energy Fraction in 0.5-1.0keV Band (ML_EEF_P2) instr.det.psf double nullable p5_count_rate_pos_err 1-Sigma Upper Count Rate Error in 5.0-8.0keV Band (ML_RATE_UPERR_P5) ct/s stat.error;phot.count;em.X-ray.medium double nullable cluster_id Group Identification of Simultaneously Fitted Sources (ID_CLUSTER) meta.id.parent short nullable b1_bkg_counts Background at the Source Position in the 0.2-2.3keV Band (ML_BKG_1) arcmin-2 instr.background double nullable p5_aperture_counts Total Counts Extracted within the Aperture in 5.0-8.0keV Band (APE_CTS_P5) ct phot.count;em.X-ray.medium short nullable p5_count_rate_error 1-Sigma Combined Count Rate Error in 5.0-8.0keV Band (ML_RATE_ERR_P5) ct/s stat.error;phot.count;em.X-ray.medium double nullable no_cts_err_flag Boolean Flag Indicates Source Contained No Counts Error meta.code short nullable p4_flux_pos_err 1-Sigma Upper Flux Error in 2.0-5.0keV Band (ML_FLUX_UPERR_P4) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p6_eef Enclosed Energy Fraction in 4.0-10.0keV Band (ML_EEF_P6) instr.det.psf double nullable p3_count_rate_pos_err 1-Sigma Upper Count Rate Error in 1.0-2.0keV Band (ML_RATE_UPERR_P3) ct/s stat.error;phot.count;em.X-ray.soft double nullable p1_aperture_bkg_counts Background Counts Extracted within the Aperture in 0.2-0.5keV Band ct instr.background;em.X-ray.soft double nullable p7_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p7_aperture_counts Total Counts Extracted within the Aperture in 5.1-6.1keV Band (APE_CTS_P7) ct phot.count;em.X-ray.medium short nullable p1_aperture_radius Extraction Radius in Pixels in the 0.2-0.5keV Band (APE_RADIUS_P1) pixel phys.angSize double nullable p1_counts_pos_err 1-Sigma Upper Counts Error in 0.2-0.5keV Band (ML_CTS_UPERR_P1) ct stat.error;phot.count;em.X-ray.soft double nullable p1_counts_neg_err 1-Sigma Lower Counts Error in 0.2-0.5keV Band (ML_CTS_LOWERR_P1) ct stat.error;phot.count;em.X-ray.soft double nullable p6_counts_neg_err 1-Sigma Lower Counts Error in 4.0-10.0keV Band (ML_CTS_LOWERR_P6) ct stat.error;phot.count;em.X-ray.medium double nullable p4_bkg_counts Background at the Source Position in 2.0-5.0keV Band (ML_BKG_P4) arcmin-2 instr.background;em.X-ray.medium double nullable skyfield_number Sky Tile Identification (SKYTILE) meta.id;obs.field int nullable p7_aperture_bkg_counts Background Counts Extracted within the Aperture in 5.1-6.1keV Band ct instr.background double nullable p3_count_rate_neg_err 1-Sigma Lower Count Rate Error in 1.0-2.0keV Band (ML_RATE_LOWERR_P3) ct/s stat.error;phot.count;em.X-ray.soft double nullable p9_counts_neg_err 1-Sigma Lower Counts Error in 7.2-8.2keV Band (ML_CTS_LOWERR_P9) ct stat.error;phot.count;em.X-ray.medium double nullable b1_counts_error 1-Sigma Combined Counts Error in 0.2-2.3keV Band (ML_CTS_ERR_1) ct stat.error;phot.count;em.X-ray.soft double nullable source_extent_neg_err 1-Sigma Lower Uncertainty for Source Extent (EXT_LOWERR) arcsec stat.error;phys.angSize double nullable s_aperture_bkg_counts Background Counts Extracted within the Aperture in 0.5-2.0keV Band ct instr.background double nullable "__row" System index column char nullable p7_exposure Vignetted Exposure Time at the Source Position in 5.1-6.1keV Band (ML_EXP_P7) s time.duration;obs.exposure double nullable b1_count_rate_pos_err 1-Sigma Upper Count Rate Error in 0.2-2.3keV Band (ML_RATE_UPERR_1) ct/s stat.error;phot.count;em.X-ray.soft double nullable p9_count_rate Source Count Rate in 7.2-8.2keV Band (ML_RATE_P9) ct/s phot.count;em.X-ray.medium double nullable p3_counts_pos_err 1-Sigma Upper Counts Error in 1.0-2.0keV Band (ML_CTS_UPERR_P3) ct stat.error;phot.count;em.X-ray.soft double nullable p4_aperture_radius Extraction Radius in Pixels in the 2.0-5.0keV Band (APE_RADIUS_P4) pixel phys.angSize double nullable p5_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p5_detect_likelihood Detection Likelihood in 5.0-8.0keV Band (DET_LIKE_P5) stat.likelihood double nullable p2_aperture_prob Poisson Probability That the Extracted Counts Are Background Fluctuation stat.probability double nullable "time" Date/Time of the First Observation of the Source (MJD_MIN) mjd time.start;obs double nullable p5_eef Enclosed Energy Fraction in 5.0-8.0keV Band (ML_EEF_P5) instr.det.psf double nullable p6_count_rate_error 1-Sigma Combined Count Rate Error in 4.0-10.0keV Band (ML_RATE_ERR_P6) ct/s stat.error;phot.count;em.X-ray.medium double nullable p8_bkg_counts Background at the Source Position in 6.2-7.1keV Band (ML_BKG_P8) arcmin-2 instr.background double nullable error_radius_raw Combined Positional Error, Raw Output from PSF Fitting (RADEC_ERR) arcsec stat.error;pos double nullable p8_counts_pos_err 1-Sigma Upper Counts Error in 6.2-7.1keV Band (ML_CTS_UPERR_P8) ct stat.error;phot.count;em.X-ray.medium double nullable p4_count_rate_pos_err 1-Sigma Upper Count Rate Error in 2.0-5.0keV Band (ML_RATE_UPERR_P4) ct/s stat.error;phot.count;em.X-ray.medium double nullable p7_flux_pos_err 1-Sigma Upper Flux Error in 5.1-6.1keV Band (ML_FLUX_UPERR_P7) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable "__y_ra_dec" System unit vector column double nullable p1_aperture_counts Total Counts Extracted within the Aperture in 0.2-0.5keV Band (APE_CTS_P1) ct phot.count;em.X-ray.soft int nullable p2_count_rate_error 1-Sigma Combined Count Rate Error in 0.5-1.0keV Band (ML_RATE_ERR_P2) ct/s stat.error;phot.count;em.X-ray.soft double nullable p7_bkg_counts Background at the Source Position in 5.1-6.1keV Band (ML_BKG_P7) arcmin-2 instr.background double nullable p2_aperture_radius Extraction Radius in Pixels in the 0.5-1.0keV Band (APE_RADIUS_P2) pixel phys.angSize double nullable p2_count_rate_pos_err 1-Sigma Upper Count Rate Error in 0.5-1.0keV Band (ML_RATE_UPERR_P2) ct/s stat.error;phot.count;em.X-ray.soft double nullable p9_flux Source Flux in 7.2-8.2keV Band (ML_FLUX_P9) erg/s/cm^2 phot.flux;em.X-ray.medium double nullable b1_flux_error 1-Sigma Combined Error on Flux in 0.2-2.3keV Band (ML_FLUX_ERR_1) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p4_counts Source Net Counts in 2.0-5.0keV Band (ML_CTS_P4) ct phot.count;em.X-ray.medium double nullable p7_counts_error 1-Sigma Combined Counts Error in 5.1-6.1keV Band (ML_CTS_ERR_P7) ct stat.error;phot.count;em.X-ray.medium double nullable b1_flux_neg_err 1-Sigma Lower Uncertainty for Flux in 0.2-2.3keV Band (ML_FLUX_LOWERR_1) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable skyfield_source_number Source Identification in Each Sky Tile (ID_SRC) meta.id short nullable p5_bkg_counts Background at the Source Position in 5.0-8.0keV Band (ML_BKG_P5) arcmin-2 instr.background double nullable error_radius 1-Sigma Positional Uncertainty (POS_ERR) arcsec stat.error;pos double nullable p2_exposure Vignetted Exposure Time at the Source Position in 0.5-1.0keV Band (ML_EXP_P2) s time.duration;obs.exposure double nullable p3_aperture_radius Extraction Radius in Pixels in the 1.0-2.0keV Band (APE_RADIUS_P3) pixel phys.angSize double nullable p8_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p4_count_rate_neg_err 1-Sigma Lower Count Rate Error in 2.0-5.0keV Band (ML_RATE_LOWERR_P4) ct/s stat.error;phot.count;em.X-ray.medium double nullable p7_counts_pos_err 1-Sigma Upper Counts Error in 5.1-6.1keV Band (ML_CTS_UPERR_P7) ct stat.error;phot.count;em.X-ray.medium double nullable p9_aperture_prob Poisson Probability That Extracted Counts Are Background Fluctuation stat.probability double nullable p4_detect_likelihood Detection Likelihood in 2.0-5.0keV Band (DET_LIKE_P4) stat.likelihood double nullable p7_aperture_exposure Exposure Map Value at the Given Position in the 5.1-6.1keV Band (APE_EXP_P7) s time.duration;obs.exposure double nullable p9_counts_pos_err 1-Sigma Upper Counts Error in 7.2-8.2keV Band (ML_CTS_UPERR_P9) ct stat.error;phot.count;em.X-ray.medium double nullable p2_aperture_bkg_counts Background Counts Extracted within the Aperture in 0.5-1.0keV Band ct instr.background;em.X-ray.soft double nullable p7_count_rate_neg_err 1-Sigma Lower Count Rate Error in 5.1-6.1keV Band (ML_RATE_LOWERR_P7) ct/s stat.error;phot.count;em.X-ray.medium double nullable p9_detect_likelihood Detection Likelihood in 7.2-8.2keV Band (DET_LIKE_P9) stat.likelihood double nullable p4_counts_error 1-Sigma Combined Counts Error in 2.0-5.0keV Band (ML_CTS_ERR_P4) ct stat.error;phot.count;em.X-ray.medium double nullable p2_detect_likelihood Detection Likelihood in 0.5-1.0keV Band (DET_LIKE_P2) stat.likelihood double nullable p1_flux_pos_err 1-Sigma Upper Flux Error in 0.2-0.5keV Band (ML_FLUX_UPERR_P1) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p4_counts_pos_err 1-Sigma Upper Counts Error in 2.0-5.0keV Band (ML_CTS_UPERR_P4) ct stat.error;phot.count;em.X-ray.medium double nullable p8_aperture_exposure Exposure Map Value at the Given Position in the 6.2-7.1keV Band (APE_EXP_P8) s time.duration;obs.exposure double nullable "__z_ra_dec" System unit vector column double nullable bii Galactic Latitude degree pos.galactic.lat double nullable b1_exposure Vignetted Exposure Time at the Source Position in 0.2-2.3keV Band (ML_EXP_1) s time.duration;obs.exposure double nullable p9_count_rate_error 1-Sigma Combined Count Rate Error in 7.2-8.2keV Band (ML_RATE_ERR_P9) ct/s stat.error;phot.count;em.X-ray.medium double nullable p9_counts_error 1-Sigma Combined Counts Error in 7.2-8.2keV Band (ML_CTS_ERR_P9) ct stat.error;phot.count;em.X-ray.medium double nullable p1_flux Source Flux in 0.2-0.5keV Band (ML_FLUX_P1) erg/s/cm^2 phot.flux;em.X-ray double nullable p7_counts Source Net Counts in 5.1-6.1keV Band (ML_CTS_P7) ct phot.count;em.X-ray.medium double nullable p8_flux_pos_err 1-Sigma Upper Flux Error in 6.2-7.1keV Band (ML_FLUX_UPERR_P8) erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable p1_eef Enclosed Energy Fraction in 0.2-0.5keV Band (ML_EEF_P1) instr.det.psf double nullable p9_aperture_exposure Exposure Map Value at the Given Position in the 7.2-8.2keV Band (APE_EXP_P9) s time.duration;obs.exposure double nullable p4_aperture_exposure Exposure Map Value at the Given Position in the 2.0-5.0keV Band (APE_EXP_P4) s time.duration;obs.exposure double nullable p2_flux_neg_err 1-Sigma Lower Flux Error in 0.5-1.0keV Band (ML_FLUX_LOWERR_P2) erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable p4_exposure Vignetted Exposure Time at the Source Position in 2.0-5.0keV Band (ML_EXP_P4) s time.duration;obs.exposure double nullable b1_aperture_counts Total Counts Extracted within the Aperture in 0.2-2.3keV Band (APE_CTS_1) ct phot.count;em.X-ray.soft int nullable p6_flux Source Flux in 4.0-10.0keV Band (ML_FLUX_P6) erg/s/cm^2 phot.flux;em.X-ray.medium double nullable p8_aperture_counts Total Counts Extracted within the Aperture in 6.2-7.1keV Band (APE_CTS_P8) ct phot.count;em.X-ray.medium short nullable p7_count_rate Source Count Rate in 5.1-6.1keV Band (ML_RATE_P7) ct/s phot.count;em.X-ray.medium double nullable p6_counts Source Net Counts in 4.0-10.0keV Band (ML_CTS_P6) ct phot.count;em.X-ray.medium double nullable p7_flux Source Flux in 5.1-6.1keV Band (ML_FLUX_P7) erg/s/cm^2 phot.flux;em.X-ray.medium double nullable