batgrbproduct Analysis for Trigger=130088

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Sun Jan  6 17:49:26 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger130088/SDC
======================================================================

  Trigger: 00130088      Segment: 000

  BAT Trigger Time: 138672173.056   [s; MET]
      Trigger Stop: 138672173.12   [s; MET]
               UTC: 2005-05-25T00:02:53.517080    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 278.144062379166   Dec: 26.3398415321529  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18
     Image Trigger?:     NO
     Rate S/N Ratio:     81.2834546509928  [ if not an image trigger ]
     Image S/N Ratio:    18

  Flight Position:   [ source = BAT ]
    RA: 278.144062379166   Dec: 26.3398415321529  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 278.138070378198   Dec: 26.3399546126458  [deg; J2000]  
        { 18h 32m 33.1s , +26d 20' 23.8" }
         +/- 0.341179792846733 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.0958651490853603 [arcmin] (formal 1-sigma fit error)
    SNR: 141.346510925587
    RA  =  18h 32m 33.1s  (278.138070 deg.)
    Dec =  26d 20' 24" (26.339955 deg.)
 
  Angular difference between Flight and Ground position is 0.322265 arcmin
 
  Partial Coding Fraction: 0.78125    [ including projection effects ]

  Duration
     T90: 8.82800000905991 +/- 0.0670522316699982
        Measured from: 0.328000009059906
                   to: 9.15600001811981     [s; relative to TRIGTIME]
     T50: 5.21999999880791 +/- 0.0256125069658732
        Measured from: 1.37200000882149
                   to: 6.59200000762939     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.543999999761581     
                   to: 1.54399999976158     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.120000004768372     
                   to: 12.6759999990463     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     7.216602  10.254482   6.908501   1.126153
           0.039155   0.045384   0.039326   0.023794 [error]
 Peak      1.115656   1.985209   1.715138   0.358720
           0.014703   0.019071   0.018489   0.010433 [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 2.82e-06 4.42e-06 5.21e-06 1.19e-05 1.59e-05 2.46e-05   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 Power-law 1.36e+01 1.46e+01 1.11e+01 1.38e+01 4.44e+01 5.30e+01   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
 
Fluence   Cutoff-PL 2.16e-06 4.40e-06 5.68e-06 6.41e-06 1.53e-05 1.86e-05   erg/cm2
              Error 1.13e-07 8.44e-08 9.49e-08 5.13e-07 2.21e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 1.03e+01 1.45e+01 1.22e+01 8.11e+00 4.17e+01 4.52e+01   ph/cm2/s
              Error 6.57e-01 3.45e-01 2.66e-01 6.85e-01 9.37e-01 1.25e+00   ph/cm2/s
 
Fluence        Band 2.14e-06 4.39e-06 5.66e-06 6.41e-06 1.53e-05 1.90e-05   erg/cm2
              Error 1.12e-07 8.41e-08 9.46e-08 5.13e-07 2.21e-07 0.00e+00   erg/cm2
Peak flux      Band 1.03e+01 1.45e+01 1.22e+01 8.11e+00 4.17e+01 4.52e+01   ph/cm2/s
              Error 6.57e-01 2.89e-01 2.66e-01 6.85e-01 9.37e-01 1.70e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.764    0.000    -      -           1.35e-01 0.00e+00  166.393 57
CPL   0.981    0.118      82.3    3.7      2.74e-01 2.85e-02   17.853 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.393    0.000    -      -           3.65e-01 0.00e+00  140.768 57
CPL   0.584    0.144     109.0    9.0      7.75e-01 1.01e-01   32.992 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: 7.616000 sec.
T50 in the 50-300 keV band: 4.864000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   12.796   -0.120   12.676
T90     8.828    0.328    9.156
T50     5.220    1.372    6.592
Peak    1.000    0.544    1.544

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  278.1381 +26.3400 0.0014   26.0   19.1      26.3948   141.3  TRIG_00130088       
------------------------------------------
 
Foreground time interval of the image:
  0.136  12.932 (delta_t =  12.796 [sec])
Background time interval of the image:
-132.395   0.136 (delta_t = 132.531 [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    0.136 sec. to   12.932 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76399     (     )
Norm@50keV  : 0.134901    (     )
------------------------------------------------------------
 Chi-Squared =      166.3934     using    59 PHA bins.
 Reduced chi-squared =      2.919182     for     57 degrees of freedom
 Null hypothesis probability = 1.211E-12
 
Photon flux (15-150 keV)    in 12.80 sec: 18.3359 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.59206e-05 ( 0  0 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.136 sec. to   12.932 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.980904     ( -0.119315   0.116438 )
Epeak [keV] : 82.2772      ( -3.35657 4.12209 )
Norm@50keV  : 0.273944    ( -2.671205E-02   3.027159E-02) )
------------------------------------------------------------
 Chi-Squared =      17.85275     using    59 PHA bins.
 Reduced chi-squared =     0.3187992     for     56 degrees of freedom
 Null hypothesis probability = 1.000
 
Photon flux (15-150 keV)    in 12.80 sec: 16.6628 ( -0.3841  0.3887 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.53236e-05 ( -2.20685e-07  2.21862e-07 ) ergs/cm2
 
Band function
Time interval is from    0.136 sec. to   12.932 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.980974   ( -0.116304   0.119468 )
beta        : -9.22245    ( -0.777548   6.87178 )
Epeak [keV] : 82.2639      ( -3.35969 4.10943 )
Norm@50keV   : 0.273910    ( -2.668777E-02   3.031725E-02) )
------------------------------------------------------------
 Chi-Squared =      17.85327     using    59 PHA bins.
 Reduced chi-squared =     0.3246049     for     55 degrees of freedom
 Null hypothesis probability = 1.000
 
Photon flux (15-150 keV)    in 12.80 sec: 16.6631 ( -0.3844  0.3884 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.5311e-05 ( -2.20403e-07  2.21299e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.800 sec. to    1.800 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39324     (     )
Norm@50keV  : 0.365457    (     )
------------------------------------------------------------
 Chi-Squared =      140.7682     using    59 PHA bins.
 Reduced chi-squared =      2.469618     for     57 degrees of freedom
 Null hypothesis probability = 4.883E-09
 
Photon flux (15-150 keV)    in 1.000 sec: 44.4379 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.5362e-06 ( 0  0 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.800 sec. to    1.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.583541     ( -0.146506   0.142206 )
Epeak [keV] : 109.008      ( -7.66737 10.3352 )
Norm@50keV  : 0.774969    ( -9.341294E-02   0.109188 )
------------------------------------------------------------
 Chi-Squared =      32.99228     using    59 PHA bins.
 Reduced chi-squared =     0.5891477     for     56 degrees of freedom
 Null hypothesis probability = 0.994
 
Photon flux (15-150 keV)    in 1.000 sec: 41.7460 ( -0.9331  0.9409 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.45143e-06 ( -5.9762e-08  5.9534e-08 ) ergs/cm2
 
Band function
Time interval is from    0.800 sec. to    1.800 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.583761   ( -0.141923   0.146815 )
beta        : -9.08043    ( -0.919571   7.08385 )
Epeak [keV] : 109.007      ( -7.68764 10.3134 )
Norm@50keV   : 0.774790    ( -9.322798E-02   0.109455 )
------------------------------------------------------------
 Chi-Squared =      32.99279     using    59 PHA bins.
 Reduced chi-squared =     0.5998689     for     55 degrees of freedom
 Null hypothesis probability = 0.992
 
Photon flux (15-150 keV)    in 1.000 sec: 41.7470 ( -0.9342  0.9403 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.44934e-06 ( -5.973e-08  5.9447e-08 ) ergs/cm2
 
Plot creation:
Sun Jan  6 18:02:29 EST 2008