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VizieR

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J/ApJS/224/40/counts Catalog of Chandra ACIS point like sources (Wang+, 2016)
Detected X-ray point sources in the Chandra ACIS survey and counts in different bands (tables 3 and 4) (766496 rows)
  recno=618252
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ColumnValue  Explain   (UCD)
_RAJ200017 20 44.5536 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000-35 48 19.152 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195017 17 23.3812 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950-35 45 21.077 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon351.3820940 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+00.6573719 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
618252recno 618252  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Group 516   [1/4953] Group Number (meta.id)
CXOGSGJ172044.5-354819  Source name (JHHMMSS.s+DDMMSS) (linked to average properties for this source (table 5)) (meta.id;meta.main)
Det2574.i0.71  Source name in individual observations (Note G1)   (meta.id;obs)
Split    Split fraction (Note G2)   (stat.fit.param)
Exp 39648.3 s [58/192363] Source exposure time after deadtime correction (time.duration;obs.exposure)
MJD52517.534 d Modified Julian Date for the beginning point of the observation (time.epoch)
Dedge 70 pix Distance from the source center to the nearest chip edge. (pos.angDistance)
OAA 126 arcsec Off-axis angle, arcseconds (instr.offset)
VigF 0.989   [0.001/1.3] Vignetting factor (Note 3)   (stat.fit.omc)
e_RAJ2000 0.22 arcsec [0/87] Statistical positional error, Right Ascension (stat.error;pos.eq.ra)
e_DEJ2000 0.09 arcsec [0/3] Statistical positional error, Declination (stat.error;pos.eq.dec)
PosErr 1.25 arcsec [1/36] Source positional uncertainties (Note 4)   (pos)
sig 2.4   [-354/1997] Detection significance (Note 5)   (stat.likelihood;obs)
Cts 4.8 ct [0.1/136000] Background-subtracted photon counts (Note 6)   (phot.count;em.X-ray)
e_Cts 2.2 ct [1/3306] Uncertainty in Cts (stat.error)
bkgd 0.1 ct Background counts within the source region (instr.background;obs.field)
CMS 0.20   [-742/241] X-ray color CMS=(M-S)/(H+M+S) (Note 7)   (phot.count;arith.ratio)
e_CMS 0.50   [0/1] Uncertainty in CMS (stat.error)
CHM 0.60   [-7911/269] X-ray color CHM=(H-M)/(H+M+S) (Note 7)   (phot.count;arith.ratio)
e_CHM 0.70   [0/1] Uncertainty in CHM (stat.error)
FX 4.66e-15  Source flux (Note 8)   (phot.flux;em.X-ray)
PK-S 0.24  K-S probability that a source is constant during an observation (stat.fit.goodness;src.var)
SQHdim  Phase classification for the source (Note 9)   (src.class)
sig/PFFT   Period significance and the most possible period (in second) from FFT algorithm (stat.fit.goodness)
Nae    [2/13] Number of possible afterglow events for sources with total events less than 100 (meta.number)
RAJ2000260.18564 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
DEJ2000-35.80532 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
Ct(0.1-1.1) 0.00 ct Source net counts, 0.1-1.1 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.1-1.1) 1.87 ct Uncertainty in Ct(0.1-1.1) (Note 3)   (stat.error)
Ct(0.3-1.1) 0.00 ct Source net counts, 0.3-1.1 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.3-1.1) 1.87 ct Uncertainty in Ct(0.3-1.1) (Note 3)   (stat.error)
Ct(0.3-1) 0.00 ct Source net counts, 0.3-1 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.3-1) 1.87 ct Uncertainty in Ct(0.3-1) (Note 3)   (stat.error)
Ct(0.1-0.5) 0.00 ct Source net counts, 0.1-0.5keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.1-0.5) 1.87 ct Uncertainty in Ct(0.1-0.5) (Note 3)   (stat.error)
Ct(0.3-0.5) 0.00 ct [-265/11865] Source net counts, 0.3-0.5keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.3-0.5) 1.87 ct [1/113] Uncertainty in Ct(0.3-0.5) (Note 3)   (stat.error)
Ct(0.1-0.8) 0.00 ct Source net counts, 0.1-0.8 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.1-0.8) 1.87 ct Uncertainty in Ct(0.1-0.8) (Note 3)   (stat.error)
Ct(0.3-0.8) 0.00 ct Source net counts, 0.3-0.8 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.3-0.8) 1.87 ct Uncertainty in Ct(0.3-0.8) (Note 3)   (stat.error)
Ct(1-2) 1.00 ct Source net counts, 1-2 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(1-2) 2.32 ct Uncertainty in Ct(1-2) (Note 3)   (stat.error)
Ct(1.1-2) 1.00 ct Source net counts, 1.1-2 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(1.1-2) 2.32 ct Uncertainty in Ct(1.1-2) (Note 3)   (stat.error)
Ct(0.5-2.4) 2.00 ct Source net counts, 0.5-2.4 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.5-2.4) 2.66 ct Uncertainty in Ct(0.5-2.4) (Note 3)   (stat.error)
Ct(0.5-2) 1.00 ct Source net counts, 0.5-2 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.5-2) 2.32 ct Uncertainty in Ct(0.5-2) (Note 3)   (stat.error)
Ct(0.8-2) 1.00 ct Source net counts, 0.8-2 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.8-2) 2.32 ct Uncertainty in Ct(0.8-2) (Note 3)   (stat.error)
Ct(2-8) 4.00 ct Source net counts, 2-8 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(2-8) 3.18 ct Uncertainty in Ct(2-8) (Note 3)   (stat.error)
Ct(0.1-8) 5.00 ct Source net counts, 0.1-8 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.1-8) 3.40 ct Uncertainty in Ct(0.1-8) (Note 3)   (stat.error)
Ct(0.3-8) 5.00 ct Source net counts, 0.3-8 keV (Note 3)   (phot.count;em.X-ray)
e_Ct(0.3-8) 3.40 ct Uncertainty in Ct(0.3-8) (Note 3)   (stat.error)
  
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