batgrbproduct Analysis for Trigger=202035

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Dec 31 14:49:31 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger202035/GCN5_download_cron
======================================================================

  Trigger: 00202035      Segment: 000

  BAT Trigger Time: 164422544   [s; MET]
      Trigger Stop: 164422616   [s; MET]
               UTC: 2006-03-19T00:55:42.920580    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 176.369724300677   Dec: 59.9902443826169  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.87
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.87

  Flight Position:   [ source = BAT ]
    RA: 176.369724300677   Dec: 59.9902443826169  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 176.386483929677   Dec: 60.0355016887842  [deg; J2000]  
        { 11h 45m 32.8s , +60d 02' 07.8" }
         +/- 2.17813230843602 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.789577879291675 [arcmin] (formal 1-sigma fit error)
    SNR: 10.0032441774842
    RA  =  11h 45m 32.8s  (176.386484 deg.)
    Dec =  60d  2'  8" (60.035502 deg.)
 
  Angular difference between Flight and Ground position is 2.761558 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 10.5680000185966 +/- 2.05705129906504
        Measured from: 2.53999999165535
                   to: 13.108000010252     [s; relative to TRIGTIME]
     T50: 4.91600000858307 +/- 1.74840843216897
        Measured from: 4.44400000572205
                   to: 9.36000001430511     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 4.05599999427795     
                   to: 5.05599999427795     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.967999994754791     
                   to: 14.4280000030994     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.281518   0.194788   0.085461   0.043181
           0.019083   0.019169   0.017012   0.015096 [error]
 Peak      0.057472   0.046208   0.022127   0.005801
           0.005785   0.005879   0.005008   0.004208 [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 7.69e-08 8.58e-08 6.83e-08 8.99e-08 2.64e-07 3.21e-07   erg/cm2
              Error 1.13e-08 9.45e-09 1.61e-08 4.17e-08 3.45e-08 6.03e-08   erg/cm2
Peak flux Power-law 5.23e-01 3.56e-01 1.58e-01 9.75e-02 1.09e+00 1.14e+00   ph/cm2/s
              Error 9.46e-02 4.74e-02 4.03e-02 4.69e-02 1.40e-01 1.49e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.70e-08 8.58e-08 6.81e-08 8.89e-08 2.64e-07 3.21e-07   erg/cm2
              Error 1.13e-08 9.46e-09 1.61e-08 4.14e-08 3.45e-08 6.00e-08   erg/cm2
Peak flux Cutoff-PL 5.21e-01 3.58e-01 1.58e-01 8.76e-02 1.08e+00 1.12e+00   ph/cm2/s
              Error 9.92e-02 4.10e-02 3.30e-02 6.91e-02 1.40e-01 1.63e-01   ph/cm2/s
 
Fluence        Band 7.52e-08 8.55e-08 6.84e-08 9.06e-08 2.64e-07 3.27e-07   erg/cm2
              Error 9.61e-09 9.15e-09 7.30e-09 3.92e-08 2.22e-08 7.11e-08   erg/cm2
Peak flux      Band 5.21e-01 3.63e-01 1.54e-01 8.96e-02 1.08e+00 1.13e+00   ph/cm2/s
              Error 9.91e-02 6.19e-02 3.99e-02 6.18e-02 1.42e-01 1.55e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.330    0.250    -      -           2.04e-03 3.38e-04   58.779 57
CPL   1.993    0.000       1.0   13.3      3.06e-03 4.77e-04   60.811  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.169    0.276    -      -           6.66e-03 1.26e-03   58.318 57
CPL   1.960    0.000       7.8    0.0      8.86e-03 2.28e-03   58.353 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: 4.672000 sec.
T50 in the 50-300 keV band: 2.432000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   13.460    0.968   14.428
T90    10.568    2.540   13.108
T50     4.916    4.444    9.360
Peak    1.000    4.056    5.056

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  176.3865 +60.0355 0.0193   10.8  143.3       0.7502    10.0  TRIG_00202035       
------------------------------------------
 
Foreground time interval of the image:
  0.968  14.428 (delta_t =  13.460 [sec])
Background time interval of the image:
 -2.699   0.968 (delta_t =   3.667 [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    0.968 sec. to   14.428 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.33046     ( -0.240396   0.258705 )
Norm@50keV  : 2.041613E-03    ( -3.430872E-04   3.338112E-04) )
------------------------------------------------------------
 Chi-Squared =      58.77863     using    59 PHA bins.
 Reduced chi-squared =      1.031204     for     57 degrees of freedom
 Null hypothesis probability = 0.410
 
Photon flux (15-150 keV)    in 13.46 sec: 0.362934 ( -0.037082  0.037106 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.64163e-07 ( -3.39246e-08  3.51266e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.968 sec. to   14.428 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99314     (     )
Epeak [keV] : 0.989871      ( -0.286413 26.3707 )
Norm@50keV  : 3.055551E-03    ( -5.861020E-04   3.679295E-04) )
------------------------------------------------------------
 Chi-Squared =      60.81057     using    59 PHA bins.
 but latest trial  2.440001E-03 gives Chi-Squared =   2.73659
 Reduced chi-squared =      1.085903     for     56 degrees of freedom
 Null hypothesis probability = 0.307
 
Photon flux (15-150 keV)    in 13.46 sec: 0.362771 ( -0.037067  0.037091 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.6403e-07 ( -3.38398e-08  3.51939e-08 ) ergs/cm2
 
Band function
Time interval is from    0.968 sec. to   14.428 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.50503   ( -9.202957E-04   14.9991 )
beta        : -2.24553    ( -0.259178   0.240383 )
Epeak [keV] : 7.77800      ( -7.67800 9992.22 )
Norm@50keV   : 1.315987E-02    ( -4.664314E-02   4.536554E-02) )
------------------------------------------------------------
 Chi-Squared =      59.10316     using    59 PHA bins.
 Reduced chi-squared =      1.074603     for     55 degrees of freedom
 Null hypothesis probability = 0.328
 
Photon flux (15-150 keV)    in 13.46 sec: 0.363083 ( -0.036961  0.037 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.64222e-07 ( -1.7642e-08  2.68527e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    4.056 sec. to    5.056 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.16859     ( -0.263226   0.287799 )
Norm@50keV  : 6.664238E-03    ( -1.285329E-03   1.244370E-03) )
------------------------------------------------------------
 Chi-Squared =      58.31802     using    59 PHA bins.
 Reduced chi-squared =      1.023123     for     57 degrees of freedom
 Null hypothesis probability = 0.427
 
Photon flux (15-150 keV)    in 1.000 sec: 1.08539 ( -0.140235  0.14024 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.24248e-08 ( -1.01931e-08  1.05287e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    4.056 sec. to    5.056 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95957     (     )
Epeak [keV] : 7.83248      (   )
Norm@50keV  : 8.860403E-03    ( -3.203851E-03   1.355362E-03) )
------------------------------------------------------------
 Chi-Squared =      58.35289     using    59 PHA bins.
 Reduced chi-squared =      1.042016     for     56 degrees of freedom
 Null hypothesis probability = 0.389
 
Photon flux (15-150 keV)    in 1.000 sec: 1.08287 ( -0.1399  0.13989 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.17539e-08 ( -1.2569e-08  1.11664e-08 ) ergs/cm2
 
Band function
Time interval is from    4.056 sec. to    5.056 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.49227   ( -8.50774   6.49226 )
beta        : -2.26558    ( -7.73442   0.350465 )
Epeak [keV] : 20.6079      ( -20.5079 306.055 )
Norm@50keV   : 2.039588E-02    ( -1.746050E-02   2188.14 )
------------------------------------------------------------
 Chi-Squared =      58.11650     using    59 PHA bins.
 Reduced chi-squared =      1.056664     for     55 degrees of freedom
 Null hypothesis probability = 0.361
 
Photon flux (15-150 keV)    in 1.000 sec: 1.08253 ( -0.143605  0.14134 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Mon Dec 31 14:59:18 EST 2007