batgrbproduct Analysis for Trigger=339852

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.42
    Process Start Time (local time): Wed Jan 14 08:35:44 EST 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger339852/GCN5_download_cron
======================================================================

  Trigger: 00339852      Segment: 000

  BAT Trigger Time: 253564843.584   [s; MET]
      Trigger Stop: 253564843.712   [s; MET]
               UTC: 2009-01-13T18:40:39.170560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 32.0733788955683   Dec: 33.4564341321039  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.58
     Image Trigger?:     NO
     Rate S/N Ratio:     8.83176086632785  [ if not an image trigger ]
     Image S/N Ratio:    7.58

  Flight Position:   [ source = BAT ]
    RA: 32.0733788955683   Dec: 33.4564341321039  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 32.0668560938994   Dec: 33.4358496879823  [deg; J2000]  
        { 02h 08m 16.0s , +33d 26' 09.1" }
         +/- 0.98346586285416 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.23626346305319 [arcmin] (formal 1-sigma fit error)
    SNR: 31.1503013101756
 
  Angular difference between Flight and Ground position is 1.277510 arcmin
 
  Partial Coding Fraction: 0.8125    [ including projection effects ]

  Duration
     T90: 9.09600001573563 +/- 0.900222182982103
        Measured from: -0.1039999127388
                   to: 8.99200010299683     [s; relative to TRIGTIME]
     T50: 5.88800001144409 +/- 0.619935483482905
        Measured from: 1.62000009417534
                   to: 7.50800010561943     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.45600000023842     
                   to: 2.45600000023842     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.919999986886978     
                   to: 9.95200002193451     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.354588   0.468059   0.326277   0.100205
           0.020286   0.020935   0.018939   0.015998 [error]
 Peak      0.068251   0.108913   0.101713   0.029950
           0.006623   0.007353   0.007161   0.005627 [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 1.13e-07 1.95e-07 2.58e-07 6.96e-07 7.55e-07 1.26e-06   erg/cm2
              Error 1.05e-08 1.07e-08 1.87e-08 1.10e-07 4.43e-08 1.24e-07   erg/cm2
Peak flux Power-law 6.49e-01 7.87e-01 6.90e-01 1.04e+00 2.49e+00 3.17e+00   ph/cm2/s
              Error 8.95e-02 6.54e-02 5.67e-02 1.84e-01 1.80e-01 2.39e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.12e-07 1.97e-07 2.59e-07 6.41e-07 7.52e-07 1.15e-06   erg/cm2
              Error 1.08e-08 1.20e-08 1.94e-08 2.18e-07 4.80e-08 2.32e-07   erg/cm2
Peak flux Cutoff-PL 6.28e-01 7.94e-01 7.00e-01 9.06e-01 2.48e+00 3.01e+00   ph/cm2/s
              Error 1.09e-01 7.31e-02 6.72e-02 3.45e-01 1.87e-01 3.58e-01   ph/cm2/s
 
Fluence        Band 1.08e-07 1.99e-07 2.57e-07 6.56e-07 7.48e-07 1.22e-06   erg/cm2
              Error 1.29e-08 1.44e-08 1.85e-08 2.09e-07 4.81e-08 1.85e-07   erg/cm2
Peak flux      Band 6.08e-01 8.08e-01 7.01e-01 9.38e-01 2.46e+00 3.07e+00   ph/cm2/s
              Error 1.22e-01 8.00e-02 4.75e-02 3.00e-01 1.90e-01 3.67e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.597    0.098    -      -           7.42e-03 4.02e-04   44.839 57
CPL   1.537    0.260     385.5 5000.0      7.96e-03 2.47e-03   44.842 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.189    0.125    -      -           2.12e-02 1.50e-03   54.556 57
CPL   1.069    0.391     427.4 5000.0      2.42e-02 1.15e-02   54.382 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: 8.640000 sec.
T50 in the 50-300 keV band: 4.032000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   10.872   -0.920    9.952
T90     9.096   -0.104    8.992
T50     5.888    1.620    7.508
Peak    1.000    1.456    2.456

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   32.0669 +33.4358 0.0062   30.7  -10.4       1.1926    31.2  TRIG_00339852       
------------------------------------------
 
Foreground time interval of the image:
 -0.920   8.617 (delta_t =   9.537 [sec])
Background time interval of the image:
-63.083  -0.920 (delta_t =  62.163 [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   -0.920 sec. to    9.952 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.59737     ( -9.748709E-02   9.840202E-02) )
Norm@50keV  : 7.423455E-03    ( -4.033544E-04   4.014452E-04) )
------------------------------------------------------------
 Chi-Squared =      44.83939     using    59 PHA bins.
 Reduced chi-squared =     0.7866559     for     57 degrees of freedom
 Null hypothesis probability = 0.879
 
Photon flux (15-150 keV)    in 10.87 sec: 0.953172 ( -0.051673  0.051808 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.54969e-07 ( -4.42083e-08  4.43366e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.920 sec. to    9.952 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.53709     ( -0.362040   0.157333 )
Epeak [keV] : 385.484      ( -385.474 9614.52 )
Norm@50keV  : 7.956162E-03    ( -9.206161E-04   4.022867E-03) )
------------------------------------------------------------
 Chi-Squared =      44.84194     using    59 PHA bins.
 Reduced chi-squared =     0.8007489     for     56 degrees of freedom
 Null hypothesis probability = 0.858
 
Photon flux (15-150 keV)    in 10.87 sec: 0.950151 ( -0.027097  0.054349 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.52074e-07 ( -4.87291e-08  4.72649e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.920 sec. to    9.952 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.13809   ( -8.86191   3.66120 )
beta        : -1.64669    ( -8.35331   0.141019 )
Epeak [keV] : 64.9048      ( -64.8048 9935.09 )
Norm@50keV   : 1.430408E-02    ( -1.430408E-02   8791.34 )
------------------------------------------------------------
 Chi-Squared =      44.52580     using    59 PHA bins.
 Reduced chi-squared =     0.8095600     for     55 degrees of freedom
 Null hypothesis probability = 0.843
 
Photon flux (15-150 keV)    in 10.87 sec: 0.944668 ( -0.056173  0.056312 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.47817e-07 ( -4.81487e-08  4.80063e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    1.456 sec. to    2.456 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.18863     ( -0.125281   0.124775 )
Norm@50keV  : 2.124329E-02    ( -1.496768E-03   1.496769E-03) )
------------------------------------------------------------
 Chi-Squared =      54.55573     using    59 PHA bins.
 Reduced chi-squared =     0.9571180     for     57 degrees of freedom
 Null hypothesis probability = 0.567
 
Photon flux (15-150 keV)    in 1.000 sec: 2.48964 ( -0.18028  0.18048 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.162e-07 ( -1.702e-08  1.7143e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.456 sec. to    2.456 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06855     ( -0.544807   0.237371 )
Epeak [keV] : 427.436      ( -427.426 9572.56 )
Norm@50keV  : 2.418206E-02    ( -4.293161E-03   1.867704E-02) )
------------------------------------------------------------
 Chi-Squared =      54.38225     using    59 PHA bins.
 Reduced chi-squared =     0.9711116     for     56 degrees of freedom
 Null hypothesis probability = 0.536
 
Photon flux (15-150 keV)    in 1.000 sec: 2.47684 ( -0.18681  0.18639 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.14803e-07 ( -1.8553e-08  1.7345e-08 ) ergs/cm2
 
Band function
Time interval is from    1.456 sec. to    2.456 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.947851   ( -9.05215   5.94569 )
beta        : -1.18869    ( -8.68067   0.238355 )
Epeak [keV] : 51.0925      ( -138.622 9861.28 )
Norm@50keV   : 3.835320E-02    ( -1.470531E-02   7927.59 )
------------------------------------------------------------
 Chi-Squared =      54.55574     using    59 PHA bins.
 Reduced chi-squared =     0.9919226     for     55 degrees of freedom
 Null hypothesis probability = 0.492
 
Photon flux (15-150 keV)    in 1.000 sec: 2.45957 ( -0.19091  0.18919 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.14713e-07 ( -1.8275e-08  1.7972e-08 ) ergs/cm2
 
Plot creation:
Wed Jan 14 09:11:39 EST 2009