batgrbproduct Analysis for Trigger=146372

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Jan  7 16:25:40 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger146372/SDC
======================================================================

  Trigger: 00146372      Segment: 000

  BAT Trigger Time: 143289051.92   [s; MET]
      Trigger Stop: 143289051.984   [s; MET]
               UTC: 2005-07-17T10:30:52.293760    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 214.331859623212   Dec: -50.5394150035486  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.53
     Image Trigger?:     NO
     Rate S/N Ratio:     15.556349186104  [ if not an image trigger ]
     Image S/N Ratio:    8.53

  Flight Position:   [ source = BAT ]
    RA: 214.331859623212   Dec: -50.5394150035486  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 214.350778262901   Dec: -50.5402995719546  [deg; J2000]  
        { 14h 17m 24.2s , -50d 32' 25.1" }
         +/- 0.651173101470959 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.216987067070267 [arcmin] (formal 1-sigma fit error)
    SNR: 56.1392110476842
    RA  =  14h 17m 24.2s  (214.350778 deg.)
    Dec = -50d 32' 25" (-50.540300 deg.)
 
  Angular difference between Flight and Ground position is 0.723364 arcmin
 
  Partial Coding Fraction: 0.46875    [ including projection effects ]

  Duration
     T90: 85.027999997139 +/- 18.5487608288558
        Measured from: 2.84800001978874
                   to: 87.8760000169277     [s; relative to TRIGTIME]
     T50: 27.3879999816418 +/- 2.1378540797384
        Measured from: 6.92400002479553
                   to: 34.3120000064373     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.68400001525879     
                   to: 3.68400001525879     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.015999972820282     
                   to: 209.152000010014     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.181544   3.313985   2.868178   0.881278
           0.077429   0.075957   0.066528   0.055259 [error]
 Peak      0.142711   0.258615   0.269371   0.086893
           0.009977   0.011320   0.011750   0.009738 [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 7.18e-07 1.46e-06 2.30e-06 8.09e-06 6.41e-06 1.26e-05   erg/cm2
              Error 4.53e-08 5.24e-08 6.94e-08 6.02e-07 1.76e-07 6.18e-07   erg/cm2
Peak flux Power-law 1.47e+00 1.91e+00 1.82e+00 3.07e+00 6.23e+00 8.27e+00   ph/cm2/s
              Error 1.54e-01 1.18e-01 9.44e-02 3.62e-01 3.10e-01 4.20e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.17e-07 1.46e-06 2.31e-06 8.04e-06 6.41e-06 1.25e-05   erg/cm2
              Error 4.53e-08 5.25e-08 6.95e-08 5.98e-07 1.76e-07 4.65e-07   erg/cm2
Peak flux Cutoff-PL 1.47e+00 1.91e+00 1.82e+00 3.05e+00 6.23e+00 8.25e+00   ph/cm2/s
              Error 1.54e-01 1.18e-01 9.45e-02 3.60e-01 3.10e-01 4.18e-01   ph/cm2/s
 
Fluence        Band 7.05e-07 1.45e-06 2.31e-06 8.15e-06 6.41e-06 1.27e-05   erg/cm2
              Error 2.03e-08 4.12e-08 6.70e-08 5.61e-07 1.73e-07 4.16e-07   erg/cm2
Peak flux      Band 1.47e+00 1.91e+00 1.82e+00 3.05e+00 6.23e+00 8.09e+00   ph/cm2/s
              Error 1.54e-01 1.18e-01 9.45e-02 3.60e-01 3.10e-01 6.34e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.338    0.054    -      -           3.13e-03 8.66e-05   47.527 57
CPL   1.281    0.000     723.2    0.0      3.31e-03 8.67e-05   48.490 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.071    0.089    -      -           5.38e-02 2.58e-03   44.435 57
CPL   1.066    0.090    9999.1 5000.0      5.41e-02 2.59e-03   44.457 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: 52.928000 sec.
T50 in the 50-300 keV band: 17.088000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  209.168   -0.016  209.152
T90    85.028    2.848   87.876
T50    27.388    6.924   34.312
Peak    1.000    2.684    3.684

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  214.3508 -50.5403 0.0034   36.0  155.8       4.0898    56.1  TRIG_00146372       
------------------------------------------
 
Foreground time interval of the image:
  0.064  12.365 (delta_t =  12.301 [sec])
Background time interval of the image:
-299.840   0.064 (delta_t = 299.904 [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    0.064 sec. to  209.232 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33809     ( -5.425656E-02   5.388558E-02) )
Norm@50keV  : 3.127604E-03    ( -8.667912E-05   8.643628E-05) )
------------------------------------------------------------
 Chi-Squared =      47.52689     using    59 PHA bins.
 Reduced chi-squared =     0.8338051     for     57 degrees of freedom
 Null hypothesis probability = 0.810
 
Photon flux (15-150 keV)    in 209.2 sec: 0.375876 ( -0.012011  0.012074 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.40767e-06 ( -1.76084e-07  1.76209e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.064 sec. to  209.232 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.28094     (     )
Epeak [keV] : 723.245      (   )
Norm@50keV  : 3.314390E-03    ( -8.904631E-05   8.436362E-05) )
------------------------------------------------------------
 Chi-Squared =      48.49045     using    59 PHA bins.
 Reduced chi-squared =     0.8659009     for     56 degrees of freedom
 Null hypothesis probability = 0.752
 
Photon flux (15-150 keV)    in 209.2 sec: 0.375658 ( -0.012003  0.012067 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.40936e-06 ( -1.76377e-07  1.76084e-07 ) ergs/cm2
 
Band function
Time interval is from    0.064 sec. to  209.232 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06757   ( -8.93243   6.06068 )
beta        : -1.33809    ( -5.396891E-02   5.425680E-02) )
Epeak [keV] : 35.0384      ( -34.9384 9854.17 )
Norm@50keV   : 6.307414E-03    ( -6.307413E-03   216949. )
------------------------------------------------------------
 Chi-Squared =      47.52689     using    59 PHA bins.
 Reduced chi-squared =     0.8641252     for     55 degrees of freedom
 Null hypothesis probability = 0.753
 
Photon flux (15-150 keV)    in 209.2 sec: 0.375484 ( -0.011512  0.010095 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.41215e-06 ( -1.75205e-07  1.70812e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    2.764 sec. to    3.764 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07127     ( -8.980143E-02   8.886766E-02) )
Norm@50keV  : 5.382624E-02    ( -2.581440E-03   2.572749E-03) )
------------------------------------------------------------
 Chi-Squared =      44.43528     using    59 PHA bins.
 Reduced chi-squared =     0.7795663     for     57 degrees of freedom
 Null hypothesis probability = 0.887
 
Photon flux (15-150 keV)    in 1.000 sec: 6.22724 ( -0.30964  0.31051 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.68017e-07 ( -2.9106e-08  2.9208e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.764 sec. to    3.764 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06574     ( -9.050030E-02   8.951378E-02) )
Epeak [keV] : 9999.11      ( -9999.10 0.885742 )
Norm@50keV  : 5.412765E-02    ( -2.590150E-03   2.582315E-03) )
------------------------------------------------------------
 Chi-Squared =      44.45678     using    59 PHA bins.
 Reduced chi-squared =     0.7938710     for     56 degrees of freedom
 Null hypothesis probability = 0.867
 
Photon flux (15-150 keV)    in 1.000 sec: 6.22524 ( -0.30958  0.31036 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.68237e-07 ( -2.914e-08  2.9215e-08 ) ergs/cm2
 
Band function
Time interval is from    2.764 sec. to    3.764 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.844433   ( -9.15557   5.84050 )
beta        : -1.07134    ( -8.92866   8.989495E-02) )
Epeak [keV] : 65.0795      ( -64.9795 9934.92 )
Norm@50keV   : 9.204089E-02    ( -4.265398E-02   2.697221E+06) )
------------------------------------------------------------
 Chi-Squared =      44.43526     using    59 PHA bins.
 Reduced chi-squared =     0.8079138     for     55 degrees of freedom
 Null hypothesis probability = 0.845
 
Photon flux (15-150 keV)    in 1.000 sec: 6.22522 ( -0.30956  0.31037 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.67778e-07 ( -2.909e-08  2.9236e-08 ) ergs/cm2
 
Plot creation:
Mon Jan  7 16:38:53 EST 2008