batgrbproduct Analysis for Trigger=163136

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  9 17:37:24 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger163136/GCN5_download_cron
======================================================================

  Trigger: 00163136      Segment: 000

  BAT Trigger Time: 153191540.352   [s; MET]
      Trigger Stop: 153191542.4   [s; MET]
               UTC: 2005-11-09T01:12:20.522800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 330.295827113925   Dec: 40.8374744574041  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.47
     Image Trigger?:     NO
     Rate S/N Ratio:     20.0748598998847  [ if not an image trigger ]
     Image S/N Ratio:    11.47

  Flight Position:   [ source = BAT ]
    RA: 330.295827113925   Dec: 40.8374744574041  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 330.315813088037   Dec: 40.8494066755485  [deg; J2000]  
        { 22h 01m 15.8s , +40d 50' 57.9" }
         +/- 2.07362264509422 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.09084746071135 [arcmin] (formal 1-sigma fit error)
    SNR: 10.7311765875339
    RA  =  22h  1m 15.8s  (330.315813 deg.)
    Dec =  40d 50' 58" (40.849407 deg.)
 
  Angular difference between Flight and Ground position is 1.155640 arcmin
 
  Partial Coding Fraction: 0.08691406    [ including projection effects ]

  Duration
     T90: 37.231999963522 +/- 7.08958896788783
        Measured from: -2.53599998354912
                   to: 34.6959999799728     [s; relative to TRIGTIME]
     T50: 23.3759999871254 +/- 16.3303888555325
        Measured from: 0.263999998569489
                   to: 23.6399999856949     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.684000015258789     
                   to: 1.68400001525879     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -3.71999999880791     
                   to: 41.6559999883175     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.583496   1.238031   1.003147   0.193108
           0.122990   0.127599   0.114575   0.102637 [error]
 Peak      0.082209   0.185135   0.149319   0.060035
           0.021206   0.025306   0.023286   0.017967 [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 3.00e-07 5.48e-07 7.69e-07 2.25e-06 2.20e-06 3.90e-06   erg/cm2
              Error 6.54e-08 7.35e-08 1.08e-07 6.79e-07 2.72e-07 7.51e-07   erg/cm2
Peak flux Power-law 1.31e+00 1.32e+00 9.35e-01 1.06e+00 3.97e+00 4.61e+00   ph/cm2/s
              Error 3.66e-01 2.39e-01 1.60e-01 3.51e-01 6.77e-01 7.20e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.57e-07 5.92e-07 8.33e-07 9.06e-07 2.14e-06 2.59e-06   erg/cm2
              Error 7.91e-08 9.05e-08 1.32e-07 1.02e-06 2.19e-07 1.03e-06   erg/cm2
Peak flux Cutoff-PL 1.10e+00 1.44e+00 1.06e+00 5.15e-01 3.93e+00 4.11e+00   ph/cm2/s
              Error 4.36e-01 2.98e-01 2.25e-01 5.34e-01 6.79e-01 8.28e-01   ph/cm2/s
 
Fluence        Band 2.38e-07 6.15e-07 7.94e-07 1.52e-06 2.13e-06 3.20e-06   erg/cm2
              Error 6.25e-08 9.92e-08 1.34e-07 8.26e-07 2.68e-07 1.06e-06   erg/cm2
Peak flux      Band 9.85e-01 1.54e+00 1.01e+00 7.51e-01 3.87e+00 4.28e+00   ph/cm2/s
              Error 4.78e-01 2.29e-01 2.09e-01 4.03e-01 6.77e-01 7.68e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.514    0.199    -      -           5.13e-03 6.10e-04   63.575 57
CPL   0.702    0.972      85.5 4969.1      1.26e-02 2.03e-02   61.025 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.495    0.241    -      -           3.19e-02 4.97e-03   45.972 57
CPL   0.595    1.217      84.1 4968.3      8.75e-02 1.79e-01   44.124  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: 60.800000 sec.
T50 in the 50-300 keV band: 32.128000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   45.376   -3.720   41.656
T90    37.232   -2.536   34.696
T50    23.376    0.264   23.640
Peak    1.000    0.684    1.684

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  330.3158 +40.8494 0.0180   53.6    7.4       2.3360    10.7  TRIG_00163136       
------------------------------------------
 
Foreground time interval of the image:
 -3.720  23.649 (delta_t =  27.369 [sec])
Background time interval of the image:
-299.352  -3.720 (delta_t = 295.632 [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   -3.720 sec. to   41.656 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51352     ( -0.199031   0.198015 )
Norm@50keV  : 5.133163E-03    ( -6.100186E-04   6.099786E-04) )
------------------------------------------------------------
 Chi-Squared =      63.57544     using    59 PHA bins.
 Reduced chi-squared =      1.115359     for     57 degrees of freedom
 Null hypothesis probability = 0.256
 
Photon flux (15-150 keV)    in 45.38 sec: 0.643181 ( -0.082943  0.083484 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.20496e-06 ( -2.71899e-07  2.72766e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -3.720 sec. to   41.656 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.702184     ( -1.08501   0.859434 )
Epeak [keV] : 85.4725      ( -23.6543 9914.53 )
Norm@50keV  : 1.258949E-02    ( -1.258949E-02   2.803807E-02) )
------------------------------------------------------------
 Chi-Squared =      61.02455     using    59 PHA bins.
 Reduced chi-squared =      1.089724     for     56 degrees of freedom
 Null hypothesis probability = 0.300
 
Photon flux (15-150 keV)    in 45.38 sec: 0.623706 ( -0.085247  0.085855 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.1389e-06 ( -2.92919e-07  1.44295e-07 ) ergs/cm2
 
Band function
Time interval is from   -3.720 sec. to   41.656 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.266779E-02   ( -1.76826   4.29567 )
beta        : -1.93364    ( -8.06636   0.462222 )
Epeak [keV] : 59.9099      ( -32.3465 227.285 )
Norm@50keV   : 3.151229E-02    ( -3.151229E-02   52.7847 )
------------------------------------------------------------
 Chi-Squared =      60.14006     using    59 PHA bins.
 Reduced chi-squared =      1.093456     for     55 degrees of freedom
 Null hypothesis probability = 0.295
 
Photon flux (15-150 keV)    in 45.38 sec: 0.614233 ( -0.081638  0.084563 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.12799e-06 ( -2.73346e-07  2.62714e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.680 sec. to    1.688 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49488     ( -0.243220   0.238206 )
Norm@50keV  : 3.187673E-02    ( -4.967075E-03   4.963998E-03) )
------------------------------------------------------------
 Chi-Squared =      45.97169     using    59 PHA bins.
 Reduced chi-squared =     0.8065209     for     57 degrees of freedom
 Null hypothesis probability = 0.852
 
Photon flux (15-150 keV)    in 1.008 sec: 3.97404 ( -0.67525  0.67846 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.05095e-07 ( -4.85211e-08  4.85523e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.680 sec. to    1.688 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: 0.595019     ( -1.40179   1.03192 )
Epeak [keV] : 84.1382      ( -20.7449 9915.86 )
Norm@50keV  : 8.746977E-02    ( -5.214784E-02   0.306217 )
------------------------------------------------------------
 Chi-Squared =      44.12372     using    59 PHA bins.
 but latest trial   49.1902     gives Chi-Squared =   9.13274
 but latest trial  3.502822E-02 gives Chi-Squared =   2.84932
 Reduced chi-squared =     0.7879235     for     56 degrees of freedom
 Null hypothesis probability = 0.875
 
Photon flux (15-150 keV)    in 1.008 sec: 3.93076 ( -0.67692  0.68061 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.02456e-07 ( -5.01057e-08  4.94807e-08 ) ergs/cm2
 
Band function
Time interval is from    0.680 sec. to    1.688 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.433470   ( -3.17273   4.01432 )
beta        : -1.95768    ( -8.04232   0.530897 )
Epeak [keV] : 55.6432      ( -31.3067 407.520 )
Norm@50keV   : 0.353365    ( -0.316225   176.866 )
------------------------------------------------------------
 Chi-Squared =      42.97250     using    59 PHA bins.
 Reduced chi-squared =     0.7813181     for     55 degrees of freedom
 Null hypothesis probability = 0.881
 
Photon flux (15-150 keV)    in 1.008 sec: 3.87031 ( -0.69398  0.65922 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.02053e-07 ( -4.99706e-08  4.95684e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  9 17:59:19 EST 2008