batgrbproduct Analysis for Trigger=114797

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Sat Jan  5 00:22:16 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger114797/GCN_download_cron
======================================================================

  Trigger: 00114797      Segment: 000

  BAT Trigger Time: 135383753.6   [s; MET]
      Trigger Stop: 135383754.112   [s; MET]
               UTC: 2005-04-16T22:35:54.119620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 133.852677933438   Dec: 11.1731175564645  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8
     Image Trigger?:     NO
     Rate S/N Ratio:     25.5734237050888  [ if not an image trigger ]
     Image S/N Ratio:    8

  Flight Position:   [ source = BAT ]
    RA: 133.852677933438   Dec: 11.1731175564645  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 133.845829303472   Dec: 11.1860540832296  [deg; J2000]  
        { 08h 55m 23.0s , +11d 11' 09.8" }
         +/- 1.35470646058504 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.671679123018735 [arcmin] (formal 1-sigma fit error)
    SNR: 19.7136976501978
    RA  =   8h 55m 23.0s  (133.845829 deg.)
    Dec =  11d 11' 10" (11.186054 deg.)
 
  Angular difference between Flight and Ground position is 0.874631 arcmin
 
  Partial Coding Fraction: 0.1289062    [ including projection effects ]

  Duration
     T90: 3.39200001955032 +/- 0.63150613607837
        Measured from: 0.187999993562698
                   to: 3.58000001311302     [s; relative to TRIGTIME]
     T50: 1.61599999666214 +/- 0.365666519987123
        Measured from: 0.612000018358231
                   to: 2.22800001502037     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.136000007390976     
                   to: 1.13600000739098     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.0719999969005585     
                   to: 4.19600000977516     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.282176   0.515850   0.550942   0.064884
           0.033907   0.037960   0.037632   0.034779 [error]
 Peak      0.096792   0.221900   0.276809   0.093181
           0.017420   0.021244   0.022638   0.019332 [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 1.30e-07 2.58e-07 4.01e-07 1.37e-06 1.12e-06 2.08e-06   erg/cm2
              Error 1.88e-08 2.29e-08 3.59e-08 2.74e-07 9.09e-08 0.00e+00   erg/cm2
Peak flux Power-law 1.37e+00 1.81e+00 1.75e+00 3.04e+00 5.93e+00 7.96e+00   ph/cm2/s
              Error 2.79e-01 2.30e-01 1.69e-01 6.12e-01 6.08e-01 7.65e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.04e-07 2.77e-07 4.44e-07 5.12e-07 1.08e-06 1.35e-06   erg/cm2
              Error 2.38e-08 2.72e-08 4.61e-08 3.13e-07 9.68e-08 3.17e-07   erg/cm2
Peak flux Cutoff-PL 1.22e+00 1.84e+00 1.86e+00 2.19e+00 5.87e+00 7.12e+00   ph/cm2/s
              Error 4.43e-01 2.47e-01 2.44e-01 1.10e+00 6.12e-01 1.25e+00   ph/cm2/s
 
Fluence        Band 1.03e-07 2.76e-07 4.43e-07 5.14e-07 1.08e-06 1.31e-06   erg/cm2
              Error 2.36e-08 2.71e-08 4.60e-08 3.12e-07 9.66e-08 0.00e+00   erg/cm2
Peak flux      Band 1.20e+00 1.85e+00 1.86e+00 2.50e+00 5.85e+00 7.41e+00   ph/cm2/s
              Error 2.99e-01 3.13e-01 2.50e-01 8.30e-01 6.50e-01 1.14e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.364    0.130    -      -           2.79e-02 2.15e-03   67.373 57
CPL   0.413    0.659      93.7   42.1      7.57e-02 5.74e-02   59.691 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.044    0.160    -      -           5.13e-02 5.06e-03   44.087 57
CPL   0.644    0.630     208.9 5000.0      7.59e-02 5.20e-02   42.983  0
 
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: 2.752000 sec.
T50 in the 50-300 keV band: 1.088000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    4.124    0.072    4.196
T90     3.392    0.188    3.580
T50     1.616    0.612    2.228
Peak    1.000    0.136    1.136

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  133.8458 +11.1861 0.0097   53.2 -153.1       1.6026    19.7  TRIG_00114797       
------------------------------------------
 
Foreground time interval of the image:
  0.072   4.196 (delta_t =   4.124 [sec])
Background time interval of the image:
-299.600   0.072 (delta_t = 299.672 [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    0.072 sec. to    4.196 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36432     ( -0.129876   0.129312 )
Norm@50keV  : 2.788789E-02    ( -2.148131E-03   2.148032E-03) )
------------------------------------------------------------
 Chi-Squared =      67.37256     using    59 PHA bins.
 Reduced chi-squared =      1.181975     for     57 degrees of freedom
 Null hypothesis probability = 0.164
 
Photon flux (15-150 keV)    in 4.124 sec: 3.36978 ( -0.27779  0.27877 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.1196e-06 ( -9.06373e-08  9.10827e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.072 sec. to    4.196 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.412771     ( -0.711619   0.607144 )
Epeak [keV] : 93.6713      ( -18.8588 65.4237 )
Norm@50keV  : 7.571012E-02    ( -3.505244E-02   7.966784E-02) )
------------------------------------------------------------
 Chi-Squared =      59.69132     using    59 PHA bins.
 Reduced chi-squared =      1.065916     for     56 degrees of freedom
 Null hypothesis probability = 0.343
 
Photon flux (15-150 keV)    in 4.124 sec: 3.23828 ( -0.29018  0.29102 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0848e-06 ( -9.70583e-08  9.64645e-08 ) ergs/cm2
 
Band function
Time interval is from    0.072 sec. to    4.196 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.412912   ( -0.606989   0.711866 )
beta        : -9.00166    ( -0.998339   7.43905 )
Epeak [keV] : 93.6505      ( -18.8530 65.4101 )
Norm@50keV   : 7.571003E-02    ( -3.502372E-02   7.973121E-02) )
------------------------------------------------------------
 Chi-Squared =      59.69141     using    59 PHA bins.
 Reduced chi-squared =      1.085298     for     55 degrees of freedom
 Null hypothesis probability = 0.309
 
Photon flux (15-150 keV)    in 4.124 sec: 3.23862 ( -0.29042  0.29086 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.08433e-06 ( -9.72233e-08  9.60273e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.136 sec. to    1.136 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04381     ( -0.162692   0.157237 )
Norm@50keV  : 5.134010E-02    ( -5.079340E-03   5.030707E-03) )
------------------------------------------------------------
 Chi-Squared =      44.08731     using    59 PHA bins.
 Reduced chi-squared =     0.7734616     for     57 degrees of freedom
 Null hypothesis probability = 0.895
 
Photon flux (15-150 keV)    in 1.000 sec: 5.92683 ( -0.60656  0.609 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.49033e-07 ( 0  0 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.136 sec. to    1.136 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.644465     ( -0.743513   0.517006 )
Epeak [keV] : 208.878      ( -208.868 9791.12 )
Norm@50keV  : 7.589150E-02    ( -2.823050E-02   7.586061E-02) )
------------------------------------------------------------
 Chi-Squared =      42.98293     using    59 PHA bins.
 but latest trial  4.763655E-02 gives Chi-Squared =   3.11593
 Reduced chi-squared =     0.7675524     for     56 degrees of freedom
 Null hypothesis probability = 0.899
 
Photon flux (15-150 keV)    in 1.000 sec: 5.87451 ( -0.61075  0.61275 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.46457e-07 ( -5.3229e-08  5.3482e-08 ) ergs/cm2
 
Band function
Time interval is from    0.136 sec. to    1.136 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.203946   ( -9.79605   5.16049 )
beta        : -1.19250    ( -8.80750   0.268724 )
Epeak [keV] : 97.5792      ( -97.4792 7775.73 )
Norm@50keV   : 0.139972    ( -0.705249   303.897 )
------------------------------------------------------------
 Chi-Squared =      42.84037     using    59 PHA bins.
 Reduced chi-squared =     0.7789159     for     55 degrees of freedom
 Null hypothesis probability = 0.884
 
Photon flux (15-150 keV)    in 1.000 sec: 5.84631 ( -0.67251  0.62834 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.46459e-07 ( -5.3449e-08  5.321e-08 ) ergs/cm2
 
Plot creation:
Sat Jan  5 00:34:40 EST 2008