Below are listed the columns of the database, and a brief description of each.
Column | Type | Description |
added | c*10 | Date observation added [dd-mm-yyyy] |
instr | c*3 | Instrument (XPx/SWx/IJx/...) as for burst db |
obsid | c*20 | Observation ID/period/SCW |
id | i*4 | Reference ID for external (e.g. RXTE) catalog |
tstart | r*8 | Start time (MJD) |
tstop | r*8 | Stop time (MJD) |
exp | r*4 | Exposure (seconds) |
flag | i*2 | Generic "quality"" flag for this observation; various purposes |
ra | r*4 | R.A., nominal pointing (decimal hours) |
dec | r*4 | Dec., nominal pointing (decimal degrees) |
name | c*30 | Name of target, where relevant (from source catalog) |
angle | r*4 | Off-axis angle (arcmin) |
vigcorr | r*4 | Vignetting correction applied to data (if any). For RXTE data, we prefer to generate the response appropriately for the source |
nburst | i*2 | Number of bursts detected in the observation |
count | r*4 | Background-subtracted mean rate for target source (count/s/cm2) |
counte | r*4 | Uncertainty on mean rate for target source (count/s/cm2) |
sig | r*4 | Significance at which the source is detected |
model | c*64 | Spectral model (xspec syntax?) |
chisqr | r*4 | (Mean) reduced chi-sqr of spectral fits (where >1 instrument) |
chisqre | r*4 | Standard deviation of chi-sqr from spectral fits, if relevant |
flux | r*4 | Mean flux (3-25 keV, 10^-9 erg/cm^2/s) |
fluxe | r*4 | Error on flux |
emin | r*4 | Minimum of energy band for fit [keV] |
emax | r*4 | Maximum of energy band for fit [keV] |
gamma | r*4 | Gamma (ratio of persistent flux to mean peak flux of radius-expansion bursts); after vppl88 |
par1 | r*4 | Spectral parameter 1 (depending upon spectral model) |
par1e | r*4 | Error on spectral parameter 1; set to -1 if parameter is frozen |
par2 | r*4 | Spectral parameter 2 |
par2e | r*4 | Error on spectral parameter 2 |
par3 | r*4 | Spectral parameter 3 |
par3e | r*4 | Error on spectral parameter 3 |
par4 | r*4 | Spectral parameter 4 |
par4e | r*4 | Error on spectral parameter 4 |
par5 | r*4 | Spectral parameter 5 |
par5e | r*4 | Error on spectral parameter 5 |
par6 | r*4 | Spectral parameter 6 |
par6e | r*4 | Error on spectral parameter 6 |
par7 | r*4 | Spectral parameter 7 |
par7e | r*4 | Error on spectral parameter 7 |
par8 | r*4 | Spectral parameter 8 |
par8e | r*4 | Error on spectral parameter 8 |
par9 | r*4 | Spectral parameter 9 |
par9e | r*4 | Error on spectral parameter 9 |
sc | r*4 | Soft colour |
sce | r*4 | Soft colour uncertainty |
hc | r*4 | Hard colour |
hce | r*4 | Hard colour uncertainty |
s_z | r*4 | S_Z value, giving position in the colour-colour diagram |
notes | c*255 | Notes |