Contents of: IX/22/./ifield.dat

The following document lists the file ifield.dat from catalogue IX/22.
Also available: plain copy of the file with f77 program to read file into arrays or line by line


## (from tabmap V5.91 (2014-03-06)) 2014-04-18T13:10:01
#---------------------------------------------------------------------------
#-- IX/22 Einstein extended deep survey (Primini+, 1991)
#--------------------------------------------------------------------------
#---Table: IX/22/ifield.dat EDS IPC Field Parameters  (9 records)
#Equinox=B1950
#-------------------------------------------------------------------------------
#     Label Format Unit     Explanations
#-------------------------------------------------------------------------------
#    Iseqno I5     ---      IPC Sequence Number (G1)
#    ontime F8.2   s        Uncorrected exposure time (1)
#     ltime F8.2   s        Corrected livetime (2)
#      sfbk F5.3   ct/pix2  Field average background for soft band (3)
#      hfbk F5.3   ct/pix2  Field average background for hard band (3)
#      bfbk F5.3   ct/pix2  Field average background for broad band (3)
#       RAh I2     h        Right Ascension (B1950) (hour)
#       RAm I2     min      Right Ascension (B1950) (min)
#       RAs I2     s        Right Ascension (B1950) (sec)
#       DE- A1     ---      Declination sign (B1950)
#       DEd I2     deg      Declination (B1950) (deg)
#       DEm I2     arcmin   Declination (B1950) (arcmin)
#       DEs I2     arcsec   Declination (B1950) (arcsec)
#     nroll F7.2   deg      Nominal Roll Angle (G2)
#        nH E8.4   cm-2     Neutral Hydrogen Column Density (4)
#      sr2f E9.4   mJ/m2/ct Flux conversion factor for soft band (5)
#      hr2f E9.4   mJ/m2/ct Flux conversion factor for hard band (5)
#      br2f E9.4   mJ/m2/ct Flux conversion factor for broad band (5)
#     alpha F5.3   ---      Backgrnd map normaliz. factor for DSMAP (6)
#     sbeta E10.4  ---      BG map normaliz. factor for soft band BEMAP (6)
#     hbeta E10.4  ---      BG map normaliz. factor for hard band BEMAP (6)
#     bbeta E10.4  ---      BG map norm. factor for broad band BEMAP (6)
#       bal F6.3   ---      Time-averaged BAL for the sequence (7)
#-------------------------------------------------------------------------------
#Note (1):  The 'ontime'  column gives the total uncorrected exposure time,
#    in seconds.
#Note (2):  The 'ltime'  column gives the corrected livetime (in seconds);
#    this  has   been  corrected  for  intervals   lost  because  of  Earth
#    occultation, passage through the South Atlantic Anomaly,  unacceptable
#    aspect solution,  and detector  dead time.   It is  the net  time,  in
#    seconds, during which the detectors gathered data.
#Note (3):   These  columns  give   the  field-averaged  background,   in
#    counts/square pixel, for the soft (0.16-0.8 keV),  hard (0.8-3.5 keV),
#    and broad (0.16-3.5 keV) bands.  The background has been obtained from
#    an annulus between 8 and 15 arcminutes about the target center.
#Note (4):  This column  gives the  column density  of neutral  hydrogen in
#    atoms per cm^2^, integrated along the line of sight through our Galaxy
#    in the direction of the field center of the observation.  Specified in
#    exponential notation,   'nH'  values are obtained  from sky surveys of
#    neutral hydrogen using 21 cm radio observations. The data are from the
#    Bell Lab survey of Stark et al., private communication.
#Note (5):  These columns  give  the  conversion  factor  from  count  rate
#    (cts/sec)  to fluxes (ergs/cm**2/sec)  for the soft,  hard,  and broad
#    bands.
#Note (6):  These quantities describe the relative contributions of the two
#    template background maps in  the  background  map  generated  for  the
#    image.  The DSMAP template is generated by summing several deep survey
#    exposures.  In  constructing  the  image  background  map,  the  DSMAP
#    template is normalized  by  the  ratio  of  image  livetime  to  DSMAP
#    livetime.  This  normalization factor,  'alpha',  is  the same for all
#    energy bands.  The BEMAP template  is  generated  by  summing  several
#    exposures of  the bright earth.  In  constructing the image background
#    map,  the BEMAP template is normalized so that the total counts in the
#    image (with sources subtracted) and the total counts in the sum of the
#    normalized DSMAP and BEMAP are  the  same.   The  BEMAP  normalization
#    factors, 'sbeta',  'hbeta',  and 'bbeta',  thus represent the ratio of
#    BEMAP counts in the image to counts in the BEMAP template. They differ
#    in the three energy bands. For more information on the construction of
#    the  image background  map from  the DSMAP  and BEMAP  templates,  see
#    Primini, et al. 1991ApJ...374..440P.
#Note (7):  This column contains the  time-averaged gain of the instrument
#    for the observation.
#-------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------------------------------------
    I|        |        |     |     |     | R  R  R   D  D  D|       |        |         |         |         |     |          |          |          |
seqno|  ontime|   ltime| sfbk| hfbk| bfbk|Ah Am As  Ed Em Es|  nroll|      nH|     sr2f|     hr2f|     br2f|alpha|     sbeta|     hbeta|     bbeta|   bal
-----|--------|--------|-----|-----|-----|------------------|-------|--------|---------|---------|---------|-----|----------|----------|----------|------
   27|47531.15|45839.64|0.247|0.180|0.427|14 10 00 +73 00 00| 146.90|1.900e+2|2.380e-11|3.428e-11|3.403e-11|0.165| 1.386e-03|-1.254e-04| 1.006e-03|12.629
   30|77225.13|74441.50|0.380|0.303|0.691|21 10 00 -68 00 00| -75.27|3.000e+2|2.380e-11|3.568e-11|3.610e-11|0.268| 2.639e-03| 3.950e-03| 2.969e-03|13.981
   31|45083.78|43652.73|0.135|0.174|0.308|01 06 00 -04 00 00| 115.68|3.590e+2|2.380e-11|3.724e-11|3.724e-11|0.157|-8.557e-04| 4.981e-04|-5.150e-04|18.771
 3557|29442.20|28412.02|0.091|0.097|0.185|04 39 00 -16 30 00| 116.00|4.540e+2|2.380e-11|3.639e-11|3.864e-11|0.102|-8.220e-04|-6.231e-04|-7.719e-04|13.168
 3558|33966.68|32767.93|0.104|0.115|0.221|04 38 39 -16 34 59| 116.00|4.540e+2|2.380e-11|3.649e-11|3.878e-11|0.118|-9.953e-04|-7.760e-04|-9.401e-04|12.820
 3670|44671.95|43173.48|0.193|0.179|0.372|17 10 37 +71 13 01|-100.49|4.080e+2|2.380e-11|3.719e-11|3.814e-11|0.155| 5.050e-04| 1.774e-03| 8.244e-04|16.484
 5390|31779.17|30711.82|0.138|0.117|0.254|12 54 17 +35 54 00|  72.36|1.270e+2|2.380e-11|3.468e-11|3.181e-11|0.111| 7.892e-04| 4.756e-04| 7.103e-04|15.725
 5391|41533.07|40119.19|0.191|0.146|0.336|12 57 44 +35 54 00|  69.55|1.200e+2|2.380e-11|3.446e-11|3.164e-11|0.144| 1.213e-03|-8.819e-05| 8.853e-04|15.547
 5392|40073.88|38714.37|0.197|0.145|0.339|13 01 12 +35 54 00|  68.29|1.140e+2|2.380e-11|3.426e-11|3.140e-11|0.139| 1.375e-03| 4.462e-04| 1.142e-03|15.600
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