batgrbproduct Analysis for Trigger=307695

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Mar 26 22:25:18 EDT 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger307695/GCN5_download_cron
======================================================================

  Trigger: 00307695      Segment: 000

  BAT Trigger Time: 228198384   [s; MET]
      Trigger Stop: 228198448   [s; MET]
               UTC: 2008-03-26T04:26:21.329640    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 19.6493277317378   Dec: 63.7407753366145  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    16.72
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    16.72

  Flight Position:   [ source = BAT ]
    RA: 19.6493277317378   Dec: 63.7407753366145  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 19.6700426741832   Dec: 63.7189437575445  [deg; J2000]  
        { 01h 18m 40.8s , +63d 43' 08.2" }
         +/- 1.64221302795449 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.749510357062856 [arcmin] (formal 1-sigma fit error)
    SNR: 14.9748320827845
    RA  =   1h 18m 40.8s  (19.670043 deg.)
    Dec =   63d 43'  8" (63.718944 deg.)
 
  Angular difference between Flight and Ground position is 1.420720 arcmin
 
  Partial Coding Fraction: 0.9296875    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.714151   0.353227   0.063114   0.036354
           0.038970   0.038307   0.033170   0.028942 [error]
 Peak      0.714151   0.353227   0.063114   0.036354
           0.038970   0.038307   0.033170   0.028942 [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 2.25e-07 1.47e-07 6.28e-08 3.65e-08 4.54e-07 4.72e-07   erg/cm2
              Error 2.95e-08 2.28e-08 2.24e-08 2.40e-08 5.67e-08 6.66e-08   erg/cm2
Peak flux Power-law 1.18e-01 4.35e-02 9.26e-03 2.35e-03 1.72e-01 1.73e-01   ph/cm2/s
              Error 1.59e-02 6.36e-03 3.19e-03 1.45e-03 1.82e-02 1.83e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.25e-07 1.47e-07 6.27e-08 3.62e-08 4.53e-07 4.71e-07   erg/cm2
              Error 2.95e-08 2.28e-08 2.24e-08 2.38e-08 5.67e-08 6.64e-08   erg/cm2
Peak flux Cutoff-PL 1.18e-01 4.35e-02 9.24e-03 2.33e-03 1.72e-01 1.73e-01   ph/cm2/s
              Error 1.59e-02 6.36e-03 3.19e-03 1.44e-03 1.82e-02 1.83e-02   ph/cm2/s
 
Fluence        Band 2.21e-07 1.48e-07 6.41e-08 6.89e-08 8.53e-07 4.77e-07   erg/cm2
              Error 1.90e-08 2.10e-08 1.13e-08 1.55e-06 2.81e-05 0.00e+00   erg/cm2
Peak flux      Band 1.17e-01 4.36e-02 9.34e-03 2.39e-03 1.72e-01 1.42e-01   ph/cm2/s
              Error 1.36e-02 5.34e-03 3.42e-02 6.74e-04 1.82e-02 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.233    0.331    -      -           5.25e-04 1.39e-04   59.793 57
CPL   1.952    0.531       1.1    0.0      4.06e-03 1.59e-03   62.073 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.233    0.331    -      -           5.25e-04 1.39e-04   59.793 57
CPL   1.952    0.619       1.1    0.0      4.06e-03 1.59e-03   62.073 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   19.6700 +63.7189 0.0128   23.7 -176.4       1.1757    15.0  TRIG_00307695       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [sec])
Background time interval of the image:

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    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.23280     ( -0.314480   0.348309 )
Norm@50keV  : 5.251737E-04    ( -1.339091E-04   1.432734E-04) )
------------------------------------------------------------
 Chi-Squared =      59.79266     using    59 PHA bins.
 Reduced chi-squared =      1.048994     for     57 degrees of freedom
 Null hypothesis probability = 0.375
 
Photon flux (15-150 keV)    in 64.00 sec: 0.171939 ( -0.018233  0.018247 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.53557e-07 ( -5.55821e-08  5.78547e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95206     ( -0.929694   0.132313 )
Epeak [keV] : 1.09851      (   )
Norm@50keV  : 4.057541E-03    ( -1.361306E-03   1.813275E-03) )
------------------------------------------------------------
 Chi-Squared =      62.07344     using    59 PHA bins.
 Reduced chi-squared =      1.108454     for     56 degrees of freedom
 Null hypothesis probability = 0.269
 
Photon flux (15-150 keV)    in 64.00 sec: 0.171850 ( -0.018224  0.018236 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.53393e-07 ( -5.54925e-08  5.79302e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.39607   ( -7.24899   0.677469 )
beta        : -3.33730    ( -0.348432   0.314822 )
Epeak [keV] : 10.8945      ( -10.7945 9989.11 )
Norm@50keV   : 8.183042E-03    ( -1.820169E-02   1.947182E-02) )
------------------------------------------------------------
 Chi-Squared =      64.41419     using    59 PHA bins.
 Reduced chi-squared =      1.171167     for     55 degrees of freedom
 Null hypothesis probability = 0.180
 
Photon flux (15-150 keV)    in 64.00 sec: 0.171944 ( -0.018232  0.018155 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.52787e-07 ( -1.6777e-07  5.59747e-05 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.23280     ( -0.314480   0.348309 )
Norm@50keV  : 5.251737E-04    ( -1.339091E-04   1.432734E-04) )
------------------------------------------------------------
 Chi-Squared =      59.79266     using    59 PHA bins.
 Reduced chi-squared =      1.048994     for     57 degrees of freedom
 Null hypothesis probability = 0.375
 
Photon flux (15-150 keV)    in 64.00 sec: 0.171939 ( -0.018233  0.018247 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.53557e-07 ( -5.55821e-08  5.78547e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95206     ( -0.929694   0.308723 )
Epeak [keV] : 1.09851      (   )
Norm@50keV  : 4.057541E-03    ( -1.361306E-03   1.813275E-03) )
------------------------------------------------------------
 Chi-Squared =      62.07344     using    59 PHA bins.
 Reduced chi-squared =      1.108454     for     56 degrees of freedom
 Null hypothesis probability = 0.269
 
Photon flux (15-150 keV)    in 64.00 sec: 0.171850 ( -0.018224  0.018236 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.53393e-07 ( -5.54925e-08  5.79302e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.39607   ( -7.24899   0.677469 )
beta        : -3.33730    ( -0.348432   0.314822 )
Epeak [keV] : 10.8945      ( -10.7945 9989.11 )
Norm@50keV   : 8.183042E-03    ( -1.820169E-02   1.947182E-02) )
------------------------------------------------------------
 Chi-Squared =      64.41419     using    59 PHA bins.
 Reduced chi-squared =      1.171167     for     55 degrees of freedom
 Null hypothesis probability = 0.180
 
Photon flux (15-150 keV)    in 64.00 sec: 0.171944 ( -0.018232  0.018155 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.52787e-07 ( -1.6777e-07  5.59747e-05 ) ergs/cm2
 
Plot creation:
Wed Mar 26 22:44:10 EDT 2008