batgrbproduct Analysis for Trigger=356120

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Wed Jul  1 17:01:19 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger356120/GCN5_download_cron
======================================================================

  Trigger: 00356120      Segment: 000

  BAT Trigger Time: 268089189.052   [s; MET]
      Trigger Stop: 268089189.116   [s; MET]
               UTC: 2009-06-30T21:13:04.180140    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 245.205910444471   Dec: 22.3672248567218  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.78
     Image Trigger?:     NO
     Rate S/N Ratio:     6.48074069840786  [ if not an image trigger ]
     Image S/N Ratio:    5.78

  Flight Position:   [ source = BAT ]
    RA: 245.205910444471   Dec: 22.3672248567218  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 245.202022514646   Dec: 22.3932422154645  [deg; J2000]  
        { 16h 20m 48.5s , +22d 23' 35.7" }
         +/- 4.66149610309253 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.97101169434512 [arcmin] (formal 1-sigma fit error)
    SNR: 3.37351154459494
 
  Angular difference between Flight and Ground position is 1.575874 arcmin
 
  Partial Coding Fraction: 0.5078125    [ including projection effects ]

  Duration
     T90: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     T50: 0.0640000104904175 +/- 
        Measured from: 0
                   to: 0.0640000104904175     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.0640000104904175 second)
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0640000104904175     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.001473   0.008355   0.007520  -0.002601
           0.002362   0.002337   0.001886   0.001443 [error]
 Peak      0.001473   0.008355   0.007520  -0.002601
           0.002362   0.002337   0.001886   0.001443 [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 1.31e-09 1.59e-09 1.41e-09 2.18e-09 5.04e-09 6.29e-09   erg/cm2
              Error 9.04e-10 8.95e-10 9.60e-10 2.78e-09 2.88e-09 4.24e-09   erg/cm2
Peak flux Power-law 6.72e-01 4.50e-01 1.99e-01 1.24e-01 1.37e+00 1.44e+00   ph/cm2/s
              Error 4.67e-01 2.55e-01 1.33e-01 1.48e-01 7.93e-01 1.13e+00   ph/cm2/s
 
Fluence   Cutoff-PL 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 Cutoff-PL 3.78e-01 9.09e-01 4.50e-01 1.76e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 2.31e-01 3.69e-01 2.14e-01 6.74e-01 0.00e+00 0.00e+00   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 1.71e+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    2.144    0.742    -      -           8.47e-03 4.96e-03   57.840 57
CPL  -4.967    0.000      50.5    8.0      3.04e+01 2.53e+01   44.850 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.144    0.742    -      -           8.47e-03 4.96e-03   57.840 57
CPL  -4.967    0.000      50.5    8.0      3.04e+01 2.53e+01   44.850 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.064    0.000    0.064
T90     0.064    0.000    0.064
T50     0.064    0.000    0.064
Peak    0.064    0.000    0.064

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  245.2020 +22.3932 0.0571   39.2    7.1       0.0137     3.4  TRIG_00356120       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.064 (delta_t =   0.064 [sec])
Background time interval of the image:
-60.052  -5.052 (delta_t =  55.000 [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    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.14433     ( -0.69092   0.794044 )
Norm@50keV  : 8.46845E-03    ( -0.00502057   0.00489328 )
------------------------------------------------------------
# Chi-Squared =          57.84 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     57 degrees of freedom 
# Null hypothesis probability =   4.439042e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 1.36670 ( -0.781948  0.804886 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.04279e-09 ( -2.87034e-09  2.8879e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.96740     (     )
Epeak [keV] : 50.5337      ( -7.87713 8.16679 )
Norm@50keV  : 30.3986    ( -30.3994   20.1321 )
------------------------------------------------------------
# Chi-Squared =          44.85 using 59 PHA bins.
# Reduced chi-squared =         0.8010 for     56 degrees of freedom 
# Null hypothesis probability =   8.573151e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99889   ( -1729.5   -1714.56 )
beta        : -9.37167    ( 10   19.9954 )
Epeak [keV] : 50.4573      ( -7.77214 8.2206 )
Norm@50keV   : 31.7183    ( -31.7183   59.703 )
------------------------------------------------------------
# Chi-Squared =          44.86 using 59 PHA bins.
# Reduced chi-squared =         0.8156 for     55 degrees of freedom 
# Null hypothesis probability =   8.338199e-01
 
Photon flux (15-150 keV)    in 0.064 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    0.000 sec. to    0.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.14433     ( -0.69092   0.794044 )
Norm@50keV  : 8.46845E-03    ( -0.00502057   0.00489328 )
------------------------------------------------------------
# Chi-Squared =          57.84 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     57 degrees of freedom 
# Null hypothesis probability =   4.439042e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 1.36670 ( -0.781948  0.804886 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.04279e-09 ( -2.87034e-09  2.8879e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.96740     (     )
Epeak [keV] : 50.5337      ( -7.87713 8.16679 )
Norm@50keV  : 30.3986    ( -30.3994   20.1321 )
------------------------------------------------------------
# Chi-Squared =          44.85 using 59 PHA bins.
# Reduced chi-squared =         0.8010 for     56 degrees of freedom 
# Null hypothesis probability =   8.573151e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.064 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99889   ( -1729.5   -1714.56 )
beta        : -9.37167    ( 10   19.9954 )
Epeak [keV] : 50.4573      ( -7.77214 8.2206 )
Norm@50keV   : 31.7183    ( -31.7183   59.703 )
------------------------------------------------------------
# Chi-Squared =          44.86 using 59 PHA bins.
# Reduced chi-squared =         0.8156 for     55 degrees of freedom 
# Null hypothesis probability =   8.338199e-01
 
Photon flux (15-150 keV)    in 0.064 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Wed Jul  1 17:46:22 EDT 2009