batgrbproduct Analysis for Trigger=104298

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Fri Jan  4 20:30:13 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger104298/GCN_download_cron
======================================================================

  Trigger: 00104298      Segment: 000

  BAT Trigger Time: 129008114.176   [s; MET]
      Trigger Stop: 129008114.304   [s; MET]
               UTC: 2005-02-02T03:35:14.800740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 290.560534826378   Dec: -38.7202927722526  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8
     Image Trigger?:     NO
     Rate S/N Ratio:     17.606816861659  [ if not an image trigger ]
     Image S/N Ratio:    8

  Flight Position:   [ source = BAT ]
    RA: 290.560534826378   Dec: -38.7202927722526  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 290.583454973384   Dec: -38.7362881691527  [deg; J2000]  
        { 19h 22m 20.0s , -38d 44' 10.6" }
         +/- 2.27973737913397 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.14125407786534 [arcmin] (formal 1-sigma fit error)
    SNR: 9.37247630836702
    RA  =  19h 22m 20.0s  (290.583455 deg.)
    Dec = -38d 44' 11" (-38.736288 deg.)
 
  Angular difference between Flight and Ground position is 1.439456 arcmin
 
  Partial Coding Fraction: 0.578125    [ including projection effects ]

  Duration
     T90: 0.112000018358231 +/- 0.0312410085941713
        Measured from: 0.0119999945163727
                   to: 0.124000012874603     [s; relative to TRIGTIME]
     T50: 0.0520000010728836 +/- 0.0200000077486047
        Measured from: 0.0400000065565109
                   to: 0.0920000076293945     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.428000003099442     
                   to: 0.571999996900558     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.00400000810623169     
                   to: 0.136000007390976     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.010786   0.019845   0.018089   0.002266
           0.003310   0.003109   0.002683   0.002034 [error]
 Peak      0.010379   0.020405   0.017842   0.001858
           0.003347   0.003144   0.002711   0.002069 [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 3.64e-09 7.39e-09 1.17e-08 4.11e-08 3.25e-08 6.39e-08   erg/cm2
              Error 1.22e-09 1.49e-09 2.41e-09 1.99e-08 6.07e-09 2.12e-08   erg/cm2
Peak flux Power-law 8.55e-01 9.52e-01 7.58e-01 9.99e-01 2.93e+00 3.56e+00   ph/cm2/s
              Error 2.94e-01 2.01e-01 1.53e-01 4.28e-01 5.53e-01 6.37e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.10e-09 7.90e-09 1.26e-08 1.60e-08 3.13e-08 3.61e-08   erg/cm2
              Error 1.53e-09 1.82e-09 2.96e-09 2.70e-08 6.64e-09 0.00e+00   erg/cm2
Peak flux Cutoff-PL 7.15e-01 1.01e+00 8.23e-01 4.92e-01 2.84e+00 3.03e+00   ph/cm2/s
              Error 3.70e-01 2.37e-01 1.97e-01 6.92e-01 5.80e-01 8.75e-01   ph/cm2/s
 
Fluence        Band 3.03e-09 7.88e-09 1.26e-08 1.59e-08 3.12e-08 3.72e-08   erg/cm2
              Error 1.52e-09 1.81e-09 2.96e-09 2.67e-08 6.63e-09 0.00e+00   erg/cm2
Peak flux      Band 6.72e-01 1.03e+00 7.98e-01 7.37e-01 2.82e+00 3.24e+00   ph/cm2/s
              Error 4.42e-01 2.62e-01 1.90e-01 5.76e-01 5.78e-01 8.29e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.339    0.307    -      -           2.52e-02 4.39e-03   58.516 57
CPL   0.516    1.497      97.8 4969.1      6.13e-02 2.20e-01   57.565  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.329    0.311    -      -           2.45e-02 4.33e-03   62.171 57
CPL   0.540    1.499      99.9 4975.7      5.77e-02 2.18e-01   61.326  0
 
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    0.132    0.004    0.136
T90     0.112    0.012    0.124
T50     0.052    0.040    0.092
Peak    1.000   -0.428    0.572

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  290.5835 -38.7363 0.0204   25.7  -75.5       0.0555     9.4  TRIG_00104298       
------------------------------------------
 
Foreground time interval of the image:
  0.004   0.136 (delta_t =   0.132 [sec])
Background time interval of the image:
-299.176   0.004 (delta_t = 299.180 [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    0.004 sec. to    0.136 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33905     ( -0.310147   0.304696 )
Norm@50keV  : 2.516929E-02    ( -4.393354E-03   4.392870E-03) )
------------------------------------------------------------
 Chi-Squared =      58.51567     using    59 PHA bins.
 Reduced chi-squared =      1.026591     for     57 degrees of freedom
 Null hypothesis probability = 0.420
 
Photon flux (15-150 keV)    in 0.1320 sec: 3.02543 ( -0.5597  0.56398 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.25414e-08 ( -6.05642e-09  6.07886e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.004 sec. to    0.136 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.516268     ( -1.92876   1.06573 )
Epeak [keV] : 97.7958      ( -36.0727 9902.20 )
Norm@50keV  : 6.127794E-02    ( -3.956702E-02   0.400738 )
------------------------------------------------------------
 Chi-Squared =      57.56473     using    59 PHA bins.
 but latest trial   50.1964     gives Chi-Squared =   7.83109
 Reduced chi-squared =      1.027942     for     56 degrees of freedom
 Null hypothesis probability = 0.417
 
Photon flux (15-150 keV)    in 0.1320 sec: 2.92021 ( -0.58691  0.58965 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.12774e-08 ( -6.74837e-09  6.53268e-09 ) ergs/cm2
 
Band function
Time interval is from    0.004 sec. to    0.136 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.579121   ( -9.42088   5.57912 )
beta        : -1.99418    ( -8.00582   2.81831 )
Epeak [keV] : 101.430      ( -101.330 606.107 )
Norm@50keV   : 5.704320E-02    ( -3.054994E-02   3088.09 )
------------------------------------------------------------
 Chi-Squared =      57.47029     using    59 PHA bins.
 Reduced chi-squared =      1.044914     for     55 degrees of freedom
 Null hypothesis probability = 0.384
 
Photon flux (15-150 keV)    in 0.1320 sec: 2.90189 ( -0.88521  0.57672 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.12121e-08 ( -6.6862e-09  6.58271e-09 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.004 sec. to    0.140 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32915     ( -0.314332   0.307792 )
Norm@50keV  : 2.446170E-02    ( -4.327491E-03   4.325373E-03) )
------------------------------------------------------------
 Chi-Squared =      62.17076     using    59 PHA bins.
 Reduced chi-squared =      1.090715     for     57 degrees of freedom
 Null hypothesis probability = 0.297
 
Photon flux (15-150 keV)    in 0.1360 sec: 2.93458 ( -0.55044  0.55471 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.26178e-08 ( -6.10613e-09  6.21003e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.004 sec. to    0.140 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.540023     ( -1.95540   1.04196 )
Epeak [keV] : 99.9498      ( -51.4296 9900.05 )
Norm@50keV  : 5.768679E-02    ( -3.673849E-02   0.399609 )
------------------------------------------------------------
 Chi-Squared =      61.32634     using    59 PHA bins.
 but latest trial   45.6672     gives Chi-Squared =   11.1377
 Reduced chi-squared =      1.095113     for     56 degrees of freedom
 Null hypothesis probability = 0.291
 
Photon flux (15-150 keV)    in 0.1360 sec: 2.84040 ( -0.58016  0.57912 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.14421e-08 ( -6.90037e-09  6.63027e-09 ) ergs/cm2
 
Band function
Time interval is from    0.004 sec. to    0.140 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 9.209322E-02   ( -10.0921   4.90791 )
beta        : -1.70020    ( -8.29980   0.606919 )
Epeak [keV] : 67.7413      ( -67.6413 9886.87 )
Norm@50keV   : 0.134000    ( -0.134000   250.806 )
------------------------------------------------------------
 Chi-Squared =      61.02086     using    59 PHA bins.
 Reduced chi-squared =      1.109470     for     55 degrees of freedom
 Null hypothesis probability = 0.268
 
Photon flux (15-150 keV)    in 0.1360 sec: 2.81832 ( -0.579  0.57711 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.13676e-08 ( -6.83482e-09  6.68046e-09 ) ergs/cm2
 
Plot creation:
Fri Jan  4 20:42:10 EST 2008