batgrbproduct Analysis for Trigger=205373

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Dec 31 18:31:52 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger205373/GCN5_download_cron
======================================================================

  Trigger: 00205373      Segment: 000

  BAT Trigger Time: 166765090.624   [s; MET]
      Trigger Stop: 166765091.648   [s; MET]
               UTC: 2006-04-15T03:38:09.490440    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 140.112543289651   Dec: -55.2398355021994  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.59
     Image Trigger?:     NO
     Rate S/N Ratio:     9.59166304662544  [ if not an image trigger ]
     Image S/N Ratio:    6.59

  Flight Position:   [ source = BAT ]
    RA: 140.112543289651   Dec: -55.2398355021994  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 140.086869892333   Dec: -55.2904491039416  [deg; J2000]  
        { 09h 20m 20.8s , -55d 17' 25.6" }
         +/- 2.7650759192011 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.16963002205113 [arcmin] (formal 1-sigma fit error)
    SNR: 7.11390881689549
    RA  =   9h 20m 20.8s  (140.086870 deg.)
    Dec = -55d 17' 26" (-55.290449 deg.)
 
  Angular difference between Flight and Ground position is 3.161106 arcmin
 
  Partial Coding Fraction: 0.515625    [ including projection effects ]

  Duration
     T90: 3 +/- 2.23606797749979
        Measured from: -0.624000012874603
                   to: 2.3759999871254     [s; relative to TRIGTIME]
     T50: 1 +/- 1.4142135623731
        Measured from: 0.375999987125397
                   to: 1.3759999871254     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.3759999871254     
                   to: 2.3759999871254     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.624000012874603     
                   to: 3.3759999871254     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.170155   0.023019   0.017011  -0.008522
           0.014746   0.013300   0.011942   0.011195 [error]
 Peak      0.055658   0.003012   0.009291   0.006530
           0.007533   0.006655   0.005898   0.005557 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 5.36e-08 1.56e-08 2.45e-09 4.43e-10 7.19e-08 7.19e-08   erg/cm2
              Error 9.62e-09 7.25e-09 3.05e-09 9.95e-10 1.57e-08 1.59e-08   erg/cm2
Peak flux Power-law 4.69e-01 1.24e-01 1.75e-02 2.78e-03 6.13e-01 6.14e-01   ph/cm2/s
              Error 1.33e-01 6.87e-02 2.42e-02 7.71e-03 1.82e-01 1.83e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.38e-08 1.52e-08 1.03e-11 2.88e-18 6.57e-08 7.09e-08   erg/cm2
              Error 1.27e-08 2.83e-09 9.19e-11 1.79e-08 1.81e-08 0.00e+00   erg/cm2
Peak flux Cutoff-PL 4.69e-01 1.24e-01 1.74e-02 2.75e-03 6.13e-01 6.13e-01   ph/cm2/s
              Error 1.33e-01 6.87e-02 2.42e-02 7.64e-03 1.82e-01 1.83e-01   ph/cm2/s
 
Fluence        Band 5.79e-08 8.84e-09 2.99e-10 1.05e-11 6.70e-08 7.88e-08   erg/cm2
              Error 1.05e-08 7.26e-09 2.76e-09 7.15e-10 1.25e-08 1.69e-08   erg/cm2
Peak flux      Band 4.31e-01 1.63e-01 1.01e-02 5.81e-04 6.49e-01 6.40e-01   ph/cm2/s
              Error 1.23e-01 1.07e-02 3.54e-03 1.85e-01 1.82e-01 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.664    0.820    -      -           4.85e-04 4.98e-04   39.651 57
CPL   1.212    0.000       4.5    6.8      4.21e-01 0.00e+00   39.362  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.674    1.038    -      -           1.33e-03 1.30e-03   59.932 57
CPL  -2.468    0.000      14.4    8.9      2.36e+02 1.14e+03   56.202 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    4.000   -0.624    3.376
T90     3.000   -0.624    2.376
T50     1.000    0.376    1.376
Peak    1.000    1.376    2.376

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  140.0869 -55.2904 0.0269   31.9  145.8       0.2123     7.1  TRIG_00205373       
------------------------------------------
 
Foreground time interval of the image:
 -0.624   3.376 (delta_t =   4.000 [sec])
Background time interval of the image:
-10.624  -0.624 (delta_t =  10.000 [sec])

Lightcurves

Notes:

1 s binning

From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval

64 ms binning

Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec

16 ms binning

From T100_start-5 s to T100_start+5 s

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.624 sec. to    3.376 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.66382     ( -0.753139   0.886267 )
Norm@50keV  : 4.848948E-04    ( -4.848948E-04   5.107044E-04) )
------------------------------------------------------------
 Chi-Squared =      39.65147     using    59 PHA bins.
 Reduced chi-squared =     0.6956398     for     57 degrees of freedom
 Null hypothesis probability = 0.961
 
Photon flux (15-150 keV)    in 4.000 sec: 0.544923 ( -0.1006  0.100767 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.18844e-08 ( -1.52096e-08  1.62368e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.624 sec. to    3.376 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.21212     (     )
Epeak [keV] : 4.48428      ( -9.60533 3.95697 )
Norm@50keV  : 0.421031    (     )
------------------------------------------------------------
 Chi-Squared =      39.36174     using    59 PHA bins.
 but latest trial   13.5723     gives Chi-Squared =   6.92894
 Reduced chi-squared =     0.7028881     for     56 degrees of freedom
 Null hypothesis probability = 0.955
 
Photon flux (15-150 keV)    in 4.000 sec: 0.544483 ( -0.10055  0.100716 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.57408e-08 ( -1.24332e-08  2.33848e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.624 sec. to    3.376 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.77969   ( -7.35181   0.326806 )
beta        : -9.37084    ( -0.886206   0.752862 )
Epeak [keV] : 11.3091      ( -11.2091 9988.69 )
Norm@50keV   : 6.202867E-03    ( -2.35554   72.0356 )
------------------------------------------------------------
 Chi-Squared =      70.51264     using    59 PHA bins.
 Reduced chi-squared =      1.282048     for     55 degrees of freedom
 Null hypothesis probability = 7.759E-02
 
Photon flux (15-150 keV)    in 4.000 sec: 0.544494 ( -0.101192  0.100771 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.69944e-08 ( -1.25492e-08  1.24516e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    1.376 sec. to    2.376 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.67362     ( -0.756266   1.31949 )
Norm@50keV  : 1.334356E-03    ( -1.334356E-03   1.260986E-03) )
------------------------------------------------------------
 Chi-Squared =      59.93191     using    59 PHA bins.
 Reduced chi-squared =      1.051437     for     57 degrees of freedom
 Null hypothesis probability = 0.370
 
Photon flux (15-150 keV)    in 1.000 sec: 0.613028 ( -0.181255  0.183144 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24711e-08 ( -7.9064e-09  9.4443e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.376 sec. to    2.376 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.46754     (     )
Epeak [keV] : 14.3667      ( -14.8300 2.90606 )
Norm@50keV  : 235.683    ( -629.031   1653.45 )
------------------------------------------------------------
 Chi-Squared =      56.20159     using    59 PHA bins.
 Reduced chi-squared =      1.003600     for     56 degrees of freedom
 Null hypothesis probability = 0.467
 
Photon flux (15-150 keV)    in 1.000 sec: 0.612639 ( -0.181186  0.183077 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.99242e-08 ( -5.6778e-09  5.9533e-09 ) ergs/cm2
 
Band function
Time interval is from    1.376 sec. to    2.376 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.56951   ( -0.515270   5.99708 )
beta        : -8.99417    ( -4.577637E-05   6.88277 )
Epeak [keV] : 7.43122      ( -6.03081 2.57537 )
Norm@50keV   : 2.878370E-02    ( -8486.59   11513.1 )
------------------------------------------------------------
 Chi-Squared =      62.88531     using    59 PHA bins.
 Reduced chi-squared =      1.143369     for     55 degrees of freedom
 Null hypothesis probability = 0.217
 
Photon flux (15-150 keV)    in 1.000 sec: 0.648608 ( -0.196076  0.173426 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13777e-08 ( -7.2985e-09  5.8371e-09 ) ergs/cm2
 
Plot creation:
Mon Dec 31 18:36:47 EST 2007