batgrbproduct Analysis for Trigger=145754

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Jan  7 15:03:14 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger145754/GCN5_download_cron
======================================================================

  Trigger: 00145754      Segment: 000

  BAT Trigger Time: 142949237.248   [s; MET]
      Trigger Stop: 142949249.408   [s; MET]
               UTC: 2005-07-13T12:07:17.628280    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 307.843067664678   Dec: 60.9200340587601  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    33472
     Image Trigger?:     NO
     Rate S/N Ratio:     30.3973683071413  [ if not an image trigger ]
     Image S/N Ratio:    33472

  Flight Position:   [ source = BAT ]
    RA: 307.843067664678   Dec: 60.9200340587601  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA:    Dec:   [deg; J2000]  
        { 00h 00m 00.0s , +00d 00' 00.0" }
         +/- inf [arcmin] (estimated 90% radius based on SNR)
         +/- 0 [arcmin] (formal 1-sigma fit error)
    SNR: 
    RA  =   0h  0m  0.0s  (0.000000 deg.)
    Dec =   0d  0'  0" (0.000000 deg.)
 
  Angular difference between Flight and Ground position is 4359.101745 arcmin
 
  Partial Coding Fraction: 0.04296875    [ including projection effects ]

  Duration
     T90: 56.8959999978542 +/- 13.454011749326
        Measured from: -0.0239999890327454
                   to: 56.8720000088215     [s; relative to TRIGTIME]
     T50: 26.5600000321865 +/- 6.95247409432368
        Measured from: 7.52799999713898
                   to: 34.0880000293255     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.91600000858307     
                   to: 9.91600000858307     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.82400000095367     
                   to: 62.9519999921322     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.282287   1.916595   1.886532   0.374125
           0.179743   0.191025   0.170504   0.143680 [error]
 Peak      0.077413   0.093426   0.077164   0.027735
           0.020929   0.026515   0.025813   0.019583 [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 4.76e-07 9.34e-07 1.42e-06 4.72e-06 3.99e-06 7.55e-06   erg/cm2
              Error 8.99e-08 1.06e-07 1.63e-07 1.20e-06 4.11e-07 1.30e-06   erg/cm2
Peak flux Power-law 7.27e-01 7.02e-01 4.73e-01 4.98e-01 2.10e+00 2.40e+00   ph/cm2/s
              Error 3.96e-01 2.39e-01 2.07e-01 4.53e-01 6.85e-01 7.81e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.21e-07 9.71e-07 1.51e-06 2.58e-06 3.92e-06 5.45e-06   erg/cm2
              Error 1.15e-07 1.22e-07 2.53e-07 2.15e-06 4.30e-07 2.17e-06   erg/cm2
Peak flux Cutoff-PL 7.26e-01 7.02e-01 4.73e-01 4.94e-01 2.10e+00 2.40e+00   ph/cm2/s
              Error 3.96e-01 2.39e-01 2.07e-01 4.50e-01 6.85e-01 7.80e-01   ph/cm2/s
 
Fluence        Band 4.17e-07 9.68e-07 1.50e-06 2.58e-06 3.92e-06 5.47e-06   erg/cm2
              Error 1.14e-07 1.22e-07 2.04e-07 2.15e-06 4.30e-07 2.17e-06   erg/cm2
Peak flux      Band 7.10e-01 6.98e-01 4.77e-01 5.10e-01 2.10e+00 2.43e+00   ph/cm2/s
              Error 2.18e-01 2.39e-01 1.66e-01 3.49e-01 6.72e-01 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.393    0.171    -      -           6.08e-03 5.95e-04   53.644 57
CPL   0.874    0.740     122.3 4963.4      1.05e-02 9.12e-03   52.133  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.571    0.625    -      -           1.65e-02 5.68e-03   50.028 57
CPL   1.569    0.629    9994.1 5000.0      1.66e-02 5.72e-03   50.030 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: 19.392000 sec.
T50 in the 50-300 keV band: 12.224000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   67.776   -4.824   62.952
T90    56.896   -0.024   56.872
T50    26.560    7.528   34.088
Peak    1.000    8.916    9.916

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
------------------------------------------
  --> command terminated with status 0
 
Foreground time interval of the image:
 -4.824  59.653 (delta_t =  64.477 [sec])
Background time interval of the image:
-60.248  -4.824 (delta_t =  55.424 [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   -4.824 sec. to   62.952 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39339     ( -0.171553   0.170186 )
Norm@50keV  : 6.079109E-03    ( -5.952171E-04   5.951449E-04) )
------------------------------------------------------------
 Chi-Squared =      53.64409     using    59 PHA bins.
 Reduced chi-squared =     0.9411244     for     57 degrees of freedom
 Null hypothesis probability = 0.602
 
Photon flux (15-150 keV)    in 67.78 sec: 0.739219 ( -0.078245  0.078642 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.98705e-06 ( -4.10333e-07  4.11018e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.824 sec. to   62.952 sec.
Parameters  : value       lower 90%   higher 90%
Photon index: 0.874390     ( -0.849129   0.629958 )
Epeak [keV] : 122.289      ( -49.1957 9877.71 )
Norm@50keV  : 1.048712E-02    ( -4.012773E-03   1.423089E-02) )
------------------------------------------------------------
 Chi-Squared =      52.13293     using    59 PHA bins.
 but latest trial   47.8685     gives Chi-Squared =   31.0662
 but latest trial  4.488048E-03 gives Chi-Squared =   21.2446
 Reduced chi-squared =     0.9309452     for     56 degrees of freedom
 Null hypothesis probability = 0.622
 
Photon flux (15-150 keV)    in 67.78 sec: 0.721836 ( -0.082078  0.082168 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.91745e-06 ( -4.31908e-07  4.27109e-07 ) ergs/cm2
 
Band function
Time interval is from   -4.824 sec. to   62.952 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.872718   ( -0.631629   0.848169 )
beta        : -7.89915    ( -2.10085   7.53794 )
Epeak [keV] : 122.032      ( -44.3841 9877.97 )
Norm@50keV   : 1.050581E-02    ( -5.058262E-03   1.421477E-02) )
------------------------------------------------------------
 Chi-Squared =      52.13294     using    59 PHA bins.
 Reduced chi-squared =     0.9478717     for     55 degrees of freedom
 Null hypothesis probability = 0.585
 
Photon flux (15-150 keV)    in 67.78 sec: 0.721871 ( -0.082116  0.082188 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.91503e-06 ( -4.31853e-07  4.2717e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    8.936 sec. to    9.896 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57052     ( -0.588648   0.661577 )
Norm@50keV  : 1.651203E-02    ( -5.874006E-03   5.494695E-03) )
------------------------------------------------------------
 Chi-Squared =      50.02800     using    59 PHA bins.
 Reduced chi-squared =     0.8776843     for     57 degrees of freedom
 Null hypothesis probability = 0.732
 
Photon flux (15-150 keV)    in 0.9600 sec: 2.10295 ( -0.68471  0.68509 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.48409e-07 ( -5.42064e-08  5.54986e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.936 sec. to    9.896 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56872     ( -0.592645   0.664854 )
Epeak [keV] : 9994.06      ( -9994.05 5.93750 )
Norm@50keV  : 1.655427E-02    ( -5.919483E-03   5.524937E-03) )
------------------------------------------------------------
 Chi-Squared =      50.03033     using    59 PHA bins.
 Reduced chi-squared =     0.8933988     for     56 degrees of freedom
 Null hypothesis probability = 0.699
 
Photon flux (15-150 keV)    in 0.9600 sec: 2.10232 ( -0.68451  0.68492 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.48806e-07 ( -5.46034e-08  5.5177e-08 ) ergs/cm2
 
Band function
Time interval is from    8.936 sec. to    9.896 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.25153   ( -8.74847   6.25153 )
beta        : -1.57022    ( -8.42978   0.588132 )
Epeak [keV] : 28.8300      ( -28.7300 9971.17 )
Norm@50keV   : 3.553194E-02    ( -3.553193E-02   11.2807 )
------------------------------------------------------------
 Chi-Squared =      50.02800     using    59 PHA bins.
 Reduced chi-squared =     0.9096001     for     55 degrees of freedom
 Null hypothesis probability = 0.665
 
Photon flux (15-150 keV)    in 0.9600 sec: 2.09906 ( -0.67036  0.67449 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.4949e-07 ( -5.34893e-08  2.57173e-05 ) ergs/cm2
 
Plot creation:
Mon Jan  7 15:28:42 EST 2008