batgrbproduct Analysis for Trigger=357072

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sun Jul 12 18:36:20 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger357072/GCN5_download_cron
======================================================================

  Trigger: 00357072      Segment: 000

  BAT Trigger Time: 269063470.08   [s; MET]
      Trigger Stop: 269063474.176   [s; MET]
               UTC: 2009-07-12T03:51:05.176560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 70.1028622577386   Dec: 22.5571323863833  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.56
     Image Trigger?:     NO
     Rate S/N Ratio:     10.6770782520313  [ if not an image trigger ]
     Image S/N Ratio:    7.56

  Flight Position:   [ source = BAT ]
    RA: 70.1028622577386   Dec: 22.5571323863833  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 70.0960071714447   Dec: 22.5250506548202  [deg; J2000]  
        { 04h 40m 23.0s , +22d 31' 30.2" }
         +/- 1.5946688750461 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.521823525447503 [arcmin] (formal 1-sigma fit error)
    SNR: 15.616692862262
 
  Angular difference between Flight and Ground position is 1.962031 arcmin
 
  Partial Coding Fraction: 0.6796875    [ including projection effects ]

  Duration
     T90: 187.783999979496 +/- 47.3618285197352
        Measured from: -72.0519998669624
                   to: 115.732000112534     [s; relative to TRIGTIME]
     T50: 37.2599999308586 +/- 10.2770199566541
        Measured from: -15.8719998598099
                   to: 21.3880000710487     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -6.09599995613098     
                   to: -5.09599995613098     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -99.3079999685287     
                   to: 158.120000004768     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.464684   1.941178   1.874085   0.471166
           0.106941   0.112954   0.104990   0.103600 [error]
 Peak      0.026668   0.040461   0.034751   0.013046
           0.007075   0.007461   0.007006   0.006810 [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 4.46e-07 9.10e-07 1.45e-06 5.13e-06 4.02e-06 7.94e-06   erg/cm2
              Error 5.01e-08 5.96e-08 1.05e-07 8.47e-07 2.59e-07 9.10e-07   erg/cm2
Peak flux Power-law 2.72e-01 2.88e-01 2.16e-01 2.63e-01 8.76e-01 1.04e+00   ph/cm2/s
              Error 9.40e-02 6.39e-02 5.63e-02 1.38e-01 1.84e-01 2.24e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.40e-07 9.15e-07 1.46e-06 4.67e-06 4.01e-06 7.38e-06   erg/cm2
              Error 5.83e-08 6.46e-08 1.10e-07 1.63e-06 2.52e-07 1.66e-06   erg/cm2
Peak flux Cutoff-PL 2.22e-01 3.22e-01 2.32e-01 8.12e-02 8.34e-01 8.56e-01   ph/cm2/s
              Error 1.10e-01 7.98e-02 6.74e-02 1.89e-01 2.39e-01 0.00e+00   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.329    0.107    -      -           1.59e-03 9.22e-05   54.710 57
CPL   1.264    0.000     614.1    0.0      1.71e-03 7.53e-04   54.630 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.415    0.346    -      -           7.16e-03 1.53e-03   54.860 57
CPL   0.203    1.642      72.0  -25.6      3.01e-02 1.38e-01   52.660 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: 85.824000 sec.
T50 in the 50-300 keV band: 32.960000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  257.428  -99.308  158.120
T90   187.784  -72.052  115.732
T50    37.260  -15.872   21.388
Peak    1.000   -6.096   -5.096

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   70.0960 +22.5251 0.0123   35.2  -22.1       5.6745    15.6  TRIG_00357072       
------------------------------------------
 
Foreground time interval of the image:
-99.308 158.120 (delta_t = 257.428 [sec])
Background time interval of the image:
-239.080 -99.308 (delta_t = 139.772 [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  -99.308 sec. to  158.120 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32906     ( -0.107502   0.107078 )
Norm@50keV  : 1.59298E-03    ( -9.22624e-05   9.22222e-05 )
------------------------------------------------------------
# Chi-Squared =          54.71 using 59 PHA bins.
# Reduced chi-squared =         0.9598 for     57 degrees of freedom 
# Null hypothesis probability =   5.616095e-01
 
Photon flux (15-150 keV)    in 257.4 sec: 0.191101 ( -0.0115288  0.0115618 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.02391e-06 ( -2.58543e-07  2.59874e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -99.308 sec. to  158.120 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26448     (     )
Epeak [keV] : 614.054      ( -614.959 -614.959 )
Norm@50keV  : 1.70549E-03    ( -0.000614751   0.000892123 )
------------------------------------------------------------
# Chi-Squared =          54.63 using 59 PHA bins.
# Reduced chi-squared =         0.9755 for     56 degrees of freedom 
# Null hypothesis probability =   5.269546e-01
 
Photon flux (15-150 keV)    in 257.4 sec: 0.190399 ( -0.012084  0.012012 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.00841e-06 ( -2.39202e-07  2.65328e-07 ) ergs/cm2
 
Band function
Time interval is from  -99.308 sec. to  158.120 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.79689   ( -11.3676   -11.3676 )
beta        : -1.35042    ( -0.119989   0.108714 )
Epeak [keV] : 22.7156      ( -22.6999 4.46893 )
Norm@50keV   : 177.462    ( -178.589   271.263 )
------------------------------------------------------------
# Chi-Squared =          53.92 using 59 PHA bins.
# Reduced chi-squared =         0.9804 for     55 degrees of freedom 
# Null hypothesis probability =   5.159049e-01
 
Photon flux (15-150 keV)    in 257.4 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -6.096 sec. to   -5.096 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41518     ( -0.344265   0.346896 )
Norm@50keV  : 7.16485E-03    ( -0.00153595   0.00152189 )
------------------------------------------------------------
# Chi-Squared =          54.86 using 59 PHA bins.
# Reduced chi-squared =         0.9625 for     57 degrees of freedom 
# Null hypothesis probability =   5.557863e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.875604 ( -0.184081  0.184477 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.90252e-08 ( -1.61093e-08  1.65393e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -6.096 sec. to   -5.096 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.203285     ( -1.94541   1.33858 )
Epeak [keV] : 72.0155      ( -20.8423 -72.0157 )
Norm@50keV  : 3.00940E-02    ( -0.0300937   0.24565 )
------------------------------------------------------------
# Chi-Squared =          52.66 using 59 PHA bins.
# Reduced chi-squared =         0.9403 for     56 degrees of freedom 
# Null hypothesis probability =   6.021646e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.834237 ( -0.188954  0.189823 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.89782e-08 ( -1.84698e-08  1.63808e-08 ) ergs/cm2
 
Band function
Time interval is from   -6.096 sec. to   -5.096 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.205741   ( -8.41797   1.43235 )
beta        : -9.28980    ( 7.899   17.899 )
Epeak [keV] : 72.2248      ( -35.281 150.531 )
Norm@50keV   : 2.99422E-02    ( -0.0299297   0.0241806 )
------------------------------------------------------------
# Chi-Squared =          52.66 using 59 PHA bins.
# Reduced chi-squared =         0.9574 for     55 degrees of freedom 
# Null hypothesis probability =   5.646259e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Sun Jul 12 18:49:07 EDT 2009