ROSAT/PSPC ivo://nasa.heasarc/rospspc NASA/GSFC HEASARC ROSAT Consortium 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The ROSPSPC database table contains a list of sources detected by the Standard Analysis Software System (SASS) in public, unfiltered, pointed PSPC datasets. In addition to the parameters returned by SASS (like position, count rate, likelihood, etc.) each source in the table has associated with it a set of source and sequence "flags." These flags are provided by the ROSAT data centers in the US, Germany and the UK to help the user of the ROSPSPC database table quickly judge the reliability of a given source. The ROSPSPC table excludes sources that meet the following parameter criteria: false_det = 'T' or deferred = 'T' or not_checked = 'T'. See the documentation below for descriptions of these parameters. The catalog consists of all primary source parameters from the automated detection algorithm employed by the SASS. In addition each observation has been quality checked, both by automatic algorithms and by detailed visual inspection. The results of this quality checking are contained as a set of logical-value flags for a set of principal source parameters. If a source parameter is suspect, the associated flag is set to "TRUE"; parameters with no obvious problems maintain the default, "FALSE", value. This database table was last updated in August 2001. More information about the ROSAT Results Archive for PSPC sources can be obtained at the following web pages: <pre> <a href="http://heasarc.gsfc.nasa.gov/docs/rosat/rra/RRA.html">http://heasarc.gsfc.nasa.gov/docs/rosat/rra/RRA.html</a> <a href="http://hea-www.harvard.edu/rosat/rra.html">http://hea-www.harvard.edu/rosat/rra.html</a> <a href="http://www.aip.de/groups/xray/rosat/rra.html">http://www.aip.de/groups/xray/rosat/rra.html</a> <a href="http://ledas-www.star.le.ac.uk/rra">http://ledas-www.star.le.ac.uk/rra</a> </pre> This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/rospspc.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=rospspc& GET text/xml 180 99999 true 150.79061131 -85.27631782 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=rospspc GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_rospspc&Action=More+Options&Action=Parameter+Search&ConeAdd=1 https://heasarc.gsfc.nasa.gov/xamin/vo/sia?table=rospspc& GET text/xml+votable POS Search Position in the form "ra,dec" where ra and dec are given in decimal degrees in the ICRS coordinate system. Cutout 150.79061131 -85.27631782 0.0166666666666667 0.0166666666666667 ROSAT 0.0166666666666667 X-ray public rospspc ROSAT Results Archive Sources for the PSPC seqid RDF file name; changed from FNAME meta.id;obs.sequence char nullable solst_id Source Number from SOLST meta.id;src int nullable ra Source right ascension degree pos.eq.ra;meta.main double nullable dec Source declination degree pos.eq.dec;meta.main double nullable count_rate Source count rate from ML or MDETEC (cts/s) ct/s phot.count;em.X-ray float nullable count_rate_error Error of count rate (cts/s) ct/s stat.error;phot.count;em.X-ray float nullable exposure Exposure live time (s) s time.duration;obs.exposure float nullable offaxis Off axis angle averaged over observation (arcmin) arcmin instr.offset float nullable srcflags Summary of source flags meta.code.qual char nullable seqflags Summary of sequence flags meta.code.qual char nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable im_x_error Source X error in image pixels stat.error;pos.cartesian.x float nullable md_like Source likelihood from the L/MDETECT algorithm stat.likelihood int nullable corr_srcdist corrected src-src dist arcsec float nullable hardness_ratio_2_error Error in hardness ratio 2 stat.error;phot.count;arith.ratio float nullable ext_emis Significant extended emission meta.code;phys.angSize char nullable counts_c_error Error on source net counts for PHA-channel 52-90 stat.error;phot;em.X-ray.soft float nullable pos_susp Source position suspect meta.code.qual;pos char nullable ltc_susp Source lightcurve suspect meta.code.qual char nullable not_checked Source not checked meta.code char nullable fft_flag Variability flag from FFT test meta.code;src.var char nullable filter Filter, NONE or BORON instr;instr.filter char nullable xy_error Error in position (0.5 arcsec/pixel) stat.error;pos.cartesian float nullable inten_susp Source brightness suspect meta.code.qual;phot char nullable within_ext Source within extended emission meta.code.qual char nullable counts_b Source net counts for PHA-channel 52-201 phot;em.X-ray.soft float nullable background Bkg surface countrate (cts/s/arcmin**2) ct/s/arcmin^2 instr.background float nullable ror ROR number of field meta.id;obs int nullable ks_flag Variability flag from KS test meta.code;src.var char nullable end_date Observation finish date mjd time.end;obs double nullable chipl Reduced chi-square of power law fit stat.fit.chi2 float nullable counts_c Source net counts for PHA-channel 52-90 phot;em.X-ray.soft float nullable counts_b_error Error on source net counts for PHA-channel 52-201 stat.error;phot;em.X-ray.soft float nullable spec_susp Source spectrum suspect meta.code.qual;spect char nullable ml_like Maximum likelihood from ML algorithm stat.likelihood float nullable ribdist Dist of source to nearest rib (arcsec) arcsec float nullable lev1_x SASS level 1 x coordinate pos.cartesian.x float nullable chirs Reduced chi-square of Raymond-Smith fit stat.fit.chi2 float nullable qc_date check date (yymmdd) int nullable extraction_radius Extraction radius in MAX LIKELIHOOD algorithm (?arcsec) arcsec int nullable csq_flag Variability flag from chi-square test meta.code;src.var char nullable lev1_y SASS level 1 y coordinate pos.cartesian.y float nullable detection_name Name of detection, like: 1RXP J153127.5+312918) meta.id char nullable sequence_detection_name Name of detection, like: 1rp200855n00.123 meta.id;meta.main char nullable associated Associated source nearby meta.code.qual;src char nullable im_y Blocked y source position (15 arcsec/pixel) pos.cartesian.y float nullable counts_d_error Error on source net counts for PHA-channel 91-201 stat.error;phot;em.X-ray.soft float nullable xy_size Source detect cell size (arcsec) arcsec phys.angSize;pos.cartesian float nullable bkg_susp Possible bkg problems? meta.code.qual;instr char nullable confused Close sources confused detect meta.code.qual char nullable site Processing Site char nullable comments Source comments meta.note char nullable obsid Observation Identifier meta.id;obs char nullable qc_site Checker site char nullable varflg_susp Source variability flag suspect meta.code.qual;src.var char nullable counts_a Source net counts for PHA-channel 11-41 phot;em.X-ray.soft float nullable source_name Name of source, like: 2RXP J153127.5+312918) meta.id;src char nullable false_det False detection meta.code.qual char nullable x Unblocked x source position (0.5 arcsec/pixel) pos.cartesian.x float nullable src_miss Missed sources present meta.code.qual char nullable hardness_ratio_1 Hardness ratio (B-A)/(B+A) phot.count;arith.ratio float nullable mdet Flag set to Y if counts(net_rt) from MDETEC char nullable im_x Blocked x source position (15 arcsec/pixel) pos.cartesian.x float nullable hardness_ratio_2 Hardness ratio (D-C)/(D+C) phot.count;arith.ratio float nullable y Unblocked y source position (0.5 arcsec/pixel) pos.cartesian.y float nullable priority Bit-encoded value (see comments) char nullable extentlik Source likelihood of extent stat.likelihood;phys.angSize float nullable vignetting Mean vignetting correction instr.param float nullable field_fdet False detections present meta.code.qual char nullable slis_mis No source list available meta.code.qual char nullable lii Source Galactic Longitude degree pos.galactic.lon double nullable det_struct Source near detector structure meta.code.qual char nullable u_flag Variability flag from U test meta.code;src.var char nullable mult_det Complex emission split meta.code.qual char nullable hardness_ratio_1_error Error in hardness ratio 1 stat.error;phot.count;arith.ratio float nullable asp_susp Possible aspect problems? meta.code.qual char nullable extended Source extended meta.code;phys.angSize char nullable im_y_error Source Y error in image pixels stat.error;pos.cartesian.y float nullable bii Source Galactic Latitude degree pos.galactic.lat double nullable qc_name Checker ID char nullable "deferred" Sequence deferred meta.code char nullable corr_ribdist corrected src-rib dist arcsec float nullable vary Variability flag (see comments below) meta.code;src.var char nullable mplsx_id Source Number from MPLSX meta.id;src int nullable srcdist Dist of source to nearest source (arcsec) arcsec float nullable counts_d Source net counts for PHA-channel 91-201 phot;em.X-ray.soft float nullable extent sigma of gaussian distribution fitted to data (arcsec) arcsec phys.angSize float nullable counts_a_error Error on source net counts for PHA-channel 11-41 stat.error;phot;em.X-ray.soft float nullable begin_date Observation start date mjd time.start;obs double nullable