batgrbproduct Analysis for Trigger=349592

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Sun Apr 19 23:27:22 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger349592/GCN5_download_cron
======================================================================

  Trigger: 00349592      Segment: 000

  BAT Trigger Time: 261841416   [s; MET]
      Trigger Stop: 261841480   [s; MET]
               UTC: 2009-04-19T13:43:31.327920    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 196.975889867574   Dec: -75.6086233726775  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.88
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.88

  Flight Position:   [ source = BAT ]
    RA: 196.975889867574   Dec: -75.6086233726775  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 197.006476865748   Dec: -75.6163562024024  [deg; J2000]  
        { 13h 08m 01.6s , -75d 36' 58.9" }
         +/- 2.080855063143 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.861020399815519 [arcmin] (formal 1-sigma fit error)
    SNR: 10.6779330138842
 
  Angular difference between Flight and Ground position is 0.650550 arcmin
 
  Partial Coding Fraction: 0.96875    [ including projection effects ]

  Duration
     T90: 468.319999992847 +/- 47.0706364985477
        Measured from: 25.944000095129
                   to: 494.264000087976     [s; relative to TRIGTIME]
     T50: 307.244000017643 +/- 62.1287928054088
        Measured from: 64.2040000855923
                   to: 371.448000103235     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 37.1800000071526     
                   to: 38.1800000071526     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 8.0959999859333     
                   to: 522.780000001192     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.226833   1.420591   1.186466   0.256611
           0.124121   0.118355   0.104232   0.095878 [error]
 Peak      0.019498   0.013448   0.012689   0.003200
           0.005683   0.005397   0.004825   0.004392 [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 3.01e-07 5.94e-07 9.10e-07 3.05e-06 2.55e-06 4.85e-06   erg/cm2
              Error 4.86e-08 5.53e-08 1.03e-07 7.83e-07 2.49e-07 8.49e-07   erg/cm2
Peak flux Power-law 1.38e-01 1.27e-01 8.08e-02 7.89e-02 3.79e-01 4.25e-01   ph/cm2/s
              Error 6.67e-02 4.15e-02 3.77e-02 7.45e-02 1.23e-01 1.43e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.01e-07 5.95e-07 9.11e-07 3.02e-06 2.55e-06 4.85e-06   erg/cm2
              Error 4.86e-08 5.54e-08 1.03e-07 7.77e-07 2.49e-07 8.44e-07   erg/cm2
Peak flux Cutoff-PL 1.25e-01 1.43e-01 7.93e-02 2.14e-02 3.65e-01 3.69e-01   ph/cm2/s
              Error 7.42e-02 5.76e-02 6.19e-02 8.01e-02 1.25e-01 1.55e-01   ph/cm2/s
 
Fluence        Band 2.98e-07 5.92e-07 9.09e-07 3.02e-06 2.55e-06 4.83e-06   erg/cm2
              Error 4.81e-08 5.52e-08 1.03e-07 7.77e-07 2.49e-07 9.05e-07   erg/cm2
Peak flux      Band 1.25e-01 1.46e-01 7.55e-02 3.87e-02 3.67e-01 3.86e-01   ph/cm2/s
              Error 7.21e-02 5.71e-02 4.44e-02 7.93e-02 1.25e-01 1.60e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.384    0.163    -      -           5.11e-04 4.40e-05   55.145 57
CPL   1.332    0.314     696.2    0.0      5.40e-04 4.43e-05   55.327 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.653    0.580    -      -           2.90e-03 1.06e-03   64.913 57
CPL   0.617    2.590      56.0 5000.0      1.15e-02 5.51e-01   64.329 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: 297.984000 sec.
T50 in the 50-300 keV band: 234.496000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  514.684    8.096  522.780
T90   468.320   25.944  494.264
T50   307.244   64.204  371.448
Peak    1.000   37.180   38.180

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  197.0065 -75.6164 0.0180   11.4 -111.7       1.0353    10.7  TRIG_00349592       
------------------------------------------
 
Foreground time interval of the image:
  8.096  72.401 (delta_t =  64.305 [sec])
Background time interval of the image:
-135.599   8.096 (delta_t = 143.695 [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    8.096 sec. to  522.780 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38412     ( -0.162796   0.162535 )
Norm@50keV  : 5.107253E-04    ( -4.411468E-05   4.395761E-05) )
------------------------------------------------------------
 Chi-Squared =      55.14502     using    59 PHA bins.
 Reduced chi-squared =     0.9674566     for     57 degrees of freedom
 Null hypothesis probability = 0.545
 
Photon flux (15-150 keV)    in 514.7 sec: 6.197635E-02 ( -0.00542978  0.00544462 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.54869e-06 ( -2.48307e-07  2.50376e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.096 sec. to  522.780 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33240     ( -0.410068   0.217187 )
Epeak [keV] : 696.169      (   )
Norm@50keV  : 5.400566E-04    ( -4.537569E-05   4.320790E-05) )
------------------------------------------------------------
 Chi-Squared =      55.32706     using    59 PHA bins.
 Reduced chi-squared =     0.9879832     for     56 degrees of freedom
 Null hypothesis probability = 0.500
 
Photon flux (15-150 keV)    in 514.7 sec: 6.195076E-02 ( -0.00542152  0.00544247 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.54897e-06 ( -2.48543e-07  2.50278e-07 ) ergs/cm2
 
Band function
Time interval is from    8.096 sec. to  522.780 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06302   ( -8.93698   5.94640 )
beta        : -1.38285    ( -8.61715   0.161652 )
Epeak [keV] : 53.4165      ( -53.3165 754.894 )
Norm@50keV   : 9.725335E-04    ( -9.725335E-04   5.34176 )
------------------------------------------------------------
 Chi-Squared =      55.14852     using    59 PHA bins.
 Reduced chi-squared =      1.002700     for     55 degrees of freedom
 Null hypothesis probability = 0.469
 
Photon flux (15-150 keV)    in 514.7 sec: 6.197804E-02 ( -0.00527096  0.00528939 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.5461e-06 ( -2.47766e-07  2.50818e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   37.180 sec. to   38.180 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65252     ( -0.558354   0.601272 )
Norm@50keV  : 2.898398E-03    ( -1.084844E-03   1.041262E-03) )
------------------------------------------------------------
 Chi-Squared =      64.91270     using    59 PHA bins.
 Reduced chi-squared =      1.138819     for     57 degrees of freedom
 Null hypothesis probability = 0.220
 
Photon flux (15-150 keV)    in 1.000 sec: 0.378703 ( -0.122997  0.123054 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.69608e-08 ( -1.0196e-08  1.08553e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   37.180 sec. to   38.180 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.616930     ( -3.61693   1.56271 )
Epeak [keV] : 56.0418      ( -56.0318 9943.96 )
Norm@50keV  : 1.145399E-02    ( -1.145399E-02   1.08993 )
------------------------------------------------------------
 Chi-Squared =      64.32858     using    59 PHA bins.
 Reduced chi-squared =      1.148725     for     56 degrees of freedom
 Null hypothesis probability = 0.208
 
Photon flux (15-150 keV)    in 1.000 sec: 0.364605 ( -0.124633  0.125875 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.38164e-08 ( -1.00731e-08  1.26478e-08 ) ergs/cm2
 
Band function
Time interval is from   37.180 sec. to   38.180 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.751308   ( -12.7053   2.29468 )
beta        : -2.25601    ( -7.86069   0.741878 )
Epeak [keV] : 59.3375      ( -30.6100 423.846 )
Norm@50keV   : 9.672697E-03    ( -80.0556   156.707 )
------------------------------------------------------------
 Chi-Squared =      64.35683     using    59 PHA bins.
 Reduced chi-squared =      1.170124     for     55 degrees of freedom
 Null hypothesis probability = 0.182
 
Photon flux (15-150 keV)    in 1.000 sec: 0.366983 ( -0.122547  0.12745 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.64449e-08 ( -1.2412e-08  1.03557e-08 ) ergs/cm2
 
Plot creation:
Sun Apr 19 23:47:21 EDT 2009