batgrbproduct Analysis for Trigger=373674

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sat Oct 24 16:54:05 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger373674/GCN5_download_cron
======================================================================

  Trigger: 00373674      Segment: 000

  BAT Trigger Time: 278067366.464   [s; MET]
      Trigger Stop: 278067367.488   [s; MET]
               UTC: 2009-10-24T08:56:01.265340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 339.206654153892   Dec: 56.8745686910293  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.06
     Image Trigger?:     NO
     Rate S/N Ratio:     19.3907194296653  [ if not an image trigger ]
     Image S/N Ratio:    9.06

  Flight Position:   [ source = BAT ]
    RA: 339.206654153892   Dec: 56.8745686910293  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 339.239698949498   Dec: 56.8856390434968  [deg; J2000]  
        { 22h 36m 57.5s , +56d 53' 08.3" }
         +/- 0.961362660804899 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.301998485204878 [arcmin] (formal 1-sigma fit error)
    SNR: 32.1784533086475
 
  Angular difference between Flight and Ground position is 1.270742 arcmin
 
  Partial Coding Fraction: 0.390625    [ including projection effects ]

  Duration
     T90: 98.9359999299049 +/- 13.7949598158634
        Measured from: -5.7199998497963
                   to: 93.2160000801086     [s; relative to TRIGTIME]
     T50: 47.311999976635 +/- 4.58444546492443
        Measured from: 4.22800010442734
                   to: 51.5400000810623     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.23199999332428     
                   to: 0.76800000667572     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.2039999961853     
                   to: 135.815999984741     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.695173   2.849473   2.799803   1.161046
           0.112397   0.118433   0.107458   0.095799 [error]
 Peak      0.055386   0.071375   0.086789   0.065337
           0.009486   0.010961   0.010409   0.009109 [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 5.84e-07 1.29e-06 2.23e-06 8.98e-06 6.10e-06 1.31e-05   erg/cm2
              Error 5.43e-08 6.98e-08 1.02e-07 9.83e-07 2.63e-07 1.02e-06   erg/cm2
Peak flux Power-law 4.34e-01 6.06e-01 6.27e-01 1.19e+00 2.04e+00 2.86e+00   ph/cm2/s
              Error 1.34e-01 1.11e-01 7.93e-02 3.59e-01 2.78e-01 3.75e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.83e-07 1.29e-06 2.23e-06 8.92e-06 6.10e-06 1.28e-05   erg/cm2
              Error 5.43e-08 6.99e-08 1.02e-07 9.77e-07 2.64e-07 6.58e-07   erg/cm2
Peak flux Cutoff-PL 4.33e-01 6.06e-01 6.28e-01 1.18e+00 2.04e+00 2.85e+00   ph/cm2/s
              Error 1.34e-01 1.11e-01 7.94e-02 3.57e-01 2.78e-01 3.74e-01   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   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      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   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
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.206    0.078    -      -           3.99e-03 1.71e-04   42.920 57
CPL   1.205    0.079    9999.4    0.0      4.01e-03 3.53e-04   43.010 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.951    0.248    -      -           1.78e-02 2.37e-03   54.620 57
CPL   0.945    0.251    10000.0    0.0      1.79e-02 2.38e-03   54.680 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: 67.840000 sec.
T50 in the 50-300 keV band: 39.040000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  151.020  -15.204  135.816
T90    98.936   -5.720   93.216
T50    47.312    4.228   51.540
Peak    1.000   -0.232    0.768

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  339.2397 +56.8856 0.0060   44.4  179.7       9.2800    32.2  TRIG_00373674       
------------------------------------------
 
Foreground time interval of the image:
-15.204 135.816 (delta_t = 151.020 [sec])
Background time interval of the image:
-237.663 -15.204 (delta_t = 222.459 [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  -15.204 sec. to  135.816 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20561     ( -0.078972   0.0780248 )
Norm@50keV  : 3.98901E-03    ( -0.000171069   0.000170375 )
------------------------------------------------------------
# Chi-Squared =          42.92 using 59 PHA bins.
# Reduced chi-squared =         0.7530 for     57 degrees of freedom 
# Null hypothesis probability =   9.165212e-01
 
Photon flux (15-150 keV)    in 151 sec: 0.468603 ( -0.0218733  0.0219478 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.10135e-06 ( -2.63187e-07  2.63641e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -15.204 sec. to  135.816 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20497     ( -0.0833742   0.0750012 )
Epeak [keV] : 9999.36      ( -10000 -10000 )
Norm@50keV  : 4.00979E-03    ( -0.000170366   0.000535943 )
------------------------------------------------------------
# Chi-Squared =          43.01 using 59 PHA bins.
# Reduced chi-squared =         0.7681 for     56 degrees of freedom 
# Null hypothesis probability =   8.984739e-01
 
Photon flux (15-150 keV)    in 151 sec: 0.468387 ( -0.021861  0.021941 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.103e-06 ( -2.63314e-07  2.63767e-07 ) ergs/cm2
 
Band function
Time interval is from  -15.204 sec. to  135.816 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.929688   ( 0.929819   0.929819 )
beta        : -1.20560    ( 1.2056   0.0789901 )
Epeak [keV] : 55.0021      ( -54.831 530.947 )
Norm@50keV   : 7.44241E-03    ( -0.00362385   0 )
------------------------------------------------------------
# Chi-Squared =          42.92 using 59 PHA bins.
# Reduced chi-squared =         0.7804 for     55 degrees of freedom 
# Null hypothesis probability =   8.817326e-01
 
Photon flux (15-150 keV)    in 151 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.232 sec. to    0.768 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.950585     ( -0.256187   0.239504 )
Norm@50keV  : 1.77866E-02    ( -0.00240849   0.00233684 )
------------------------------------------------------------
# Chi-Squared =          54.62 using 59 PHA bins.
# Reduced chi-squared =         0.9582 for     57 degrees of freedom 
# Null hypothesis probability =   5.649533e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.04346 ( -0.277539  0.27864 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.95816e-07 ( -2.50247e-08  2.50455e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.232 sec. to    0.768 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.944552     ( -0.27836   0.223186 )
Epeak [keV] : 10000.00      (   )
Norm@50keV  : 1.78979E-02    ( -0.00241235   0.00234288 )
------------------------------------------------------------
# Chi-Squared =          54.68 using 59 PHA bins.
# Reduced chi-squared =         0.9764 for     56 degrees of freedom 
# Null hypothesis probability =   5.250974e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.04256 ( -0.27756  0.27851 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.95876e-07 ( -2.5041e-08  2.5063e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.232 sec. to    0.768 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.846366   ( 0.846339   0.846339 )
beta        : -0.950614    ( -0.239498   0.256159 )
Epeak [keV] : 22.9163      ( -22.9006 -22.9006 )
Norm@50keV   : 2.75128E-02    ( -0.0119575   5309.61 )
------------------------------------------------------------
# Chi-Squared =          54.62 using 59 PHA bins.
# Reduced chi-squared =         0.9931 for     55 degrees of freedom 
# Null hypothesis probability =   4.891586e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Sat Oct 24 17:16:40 EDT 2009