batgrbproduct Analysis for Trigger=359530

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Mon Aug 10 04:07:58 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger359530/GCN5_download_cron
======================================================================

  Trigger: 00359530      Segment: 000

  BAT Trigger Time: 271531879.488   [s; MET]
      Trigger Stop: 271531883.584   [s; MET]
               UTC: 2009-08-09T17:31:14.504600    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 328.645008350626   Dec: -0.0832895616909542  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.62
     Image Trigger?:     NO
     Rate S/N Ratio:     10.6770782520313  [ if not an image trigger ]
     Image S/N Ratio:    8.62

  Flight Position:   [ source = BAT ]
    RA: 328.645008350626   Dec: -0.0832895616909542  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 328.671571332631   Dec: -0.0884375394345566  [deg; J2000]  
        { 21h 54m 41.2s , -00d 05' 18.4" }
         +/- 1.98393202334778 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.10414078128448 [arcmin] (formal 1-sigma fit error)
    SNR: 11.4308917497784
 
  Angular difference between Flight and Ground position is 1.623432 arcmin
 
  Partial Coding Fraction: 0.4335938    [ including projection effects ]

  Duration
     T90: 5.40799993276596 +/- 1.2162532625235
        Measured from: 0.52400016784668
                   to: 5.93200010061264     [s; relative to TRIGTIME]
     T50: 2.11199998855591 +/- 1.08389116109503
        Measured from: 1.59200012683868
                   to: 3.70400011539459     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.26399999856949     
                   to: 3.26399999856949     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.995999991893768     
                   to: 6.40800005197525     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.106801   0.213862   0.156705   0.054149
           0.023735   0.025135   0.022223   0.020016 [error]
 Peak      0.040565   0.040924   0.046060   0.017991
           0.009224   0.009042   0.008491   0.007288 [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 3.81e-08 7.69e-08 1.21e-07 4.20e-07 3.36e-07 6.55e-07   erg/cm2
              Error 9.16e-09 1.15e-08 2.12e-08 1.59e-07 5.27e-08 1.74e-07   erg/cm2
Peak flux Power-law 3.25e-01 3.52e-01 2.71e-01 3.41e-01 1.08e+00 1.29e+00   ph/cm2/s
              Error 1.18e-01 7.72e-02 6.66e-02 1.80e-01 2.17e-01 2.62e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.48e-08 8.23e-08 1.25e-07 1.72e-07 3.19e-07 4.14e-07   erg/cm2
              Error 1.04e-08 1.44e-08 2.35e-08 2.69e-07 5.90e-08 2.28e-07   erg/cm2
Peak flux Cutoff-PL 3.22e-01 3.53e-01 2.72e-01 3.20e-01 1.01e+00 1.26e+00   ph/cm2/s
              Error 1.18e-01 8.22e-02 2.02e-01 3.19e-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 1.25e+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    1.348    0.235    -      -           4.65e-03 6.53e-04   53.020 57
CPL   0.750    0.938     102.5    0.0      9.46e-03 0.00e+00   51.700 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.378    0.361    -      -           8.88e-03 1.76e-03   62.370 57
CPL   1.375    1.561    9986.8    0.0      8.92e-03 1.56e-02   62.370 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: 7.296000 sec.
T50 in the 50-300 keV band: 2.560000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    7.404   -0.996    6.408
T90     5.408    0.524    5.932
T50     2.112    1.592    3.704
Peak    1.000    2.264    3.264

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  328.6716  -0.0884 0.0168   27.7   99.2       0.5420    11.4  TRIG_00359530       
------------------------------------------
 
Foreground time interval of the image:
 -0.996   6.408 (delta_t =   7.404 [sec])
Background time interval of the image:
-239.488 -55.463 (delta_t = 184.025 [sec])
-54.488  -0.996 (delta_t =  53.492 [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   -0.996 sec. to    6.408 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34794     ( -0.236084   0.233904 )
Norm@50keV  : 4.64788E-03    ( -0.000654086   0.000651525 )
------------------------------------------------------------
# Chi-Squared =          53.02 using 59 PHA bins.
# Reduced chi-squared =         0.9301 for     57 degrees of freedom 
# Null hypothesis probability =   6.252182e-01
 
Photon flux (15-150 keV)    in 7.404 sec: 0.559697 ( -0.0791257  0.0792598 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.36266e-07 ( -5.23218e-08  5.306e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.996 sec. to    6.408 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.749800     ( -1.11283   0.763058 )
Epeak [keV] : 102.542      (   )
Norm@50keV  : 9.45551E-03    (     )
------------------------------------------------------------
# Chi-Squared =          51.70 using 59 PHA bins.
# Reduced chi-squared =         0.9233 for     56 degrees of freedom 
# Null hypothesis probability =   6.380672e-01
 
Photon flux (15-150 keV)    in 7.404 sec: 0.546444 ( -0.081569  0.08147 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.19126e-07 ( -5.90624e-08  5.89077e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.996 sec. to    6.408 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96321   ( -63.9069   -53.9072 )
beta        : -1.58125    ( -0.406215   0.303971 )
Epeak [keV] : 30.4689      ( -10.9401 7.36013 )
Norm@50keV   : 131.381    ( -138.97   46.6535 )
------------------------------------------------------------
# Chi-Squared =          49.75 using 59 PHA bins.
# Reduced chi-squared =         0.9046 for     55 degrees of freedom 
# Null hypothesis probability =   6.747945e-01
 
Photon flux (15-150 keV)    in 7.404 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    2.264 sec. to    3.264 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37807     ( -0.361858   0.360893 )
Norm@50keV  : 8.88235E-03    ( -0.00176976   0.00175799 )
------------------------------------------------------------
# Chi-Squared =          62.37 using 59 PHA bins.
# Reduced chi-squared =          1.094 for     57 degrees of freedom 
# Null hypothesis probability =   2.911271e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.07644 ( -0.216187  0.217078 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.62208e-08 ( -1.90246e-08  1.93889e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.264 sec. to    3.264 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37472     ( -1.26514   1.85639 )
Epeak [keV] : 9986.79      (   )
Norm@50keV  : 8.91574E-03    ( -0.00175746   0.0295249 )
------------------------------------------------------------
# Chi-Squared =          62.37 using 59 PHA bins.
# Reduced chi-squared =          1.114 for     56 degrees of freedom 
# Null hypothesis probability =   2.601083e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.00988 ( -0.230223  0.17403 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.0547e-08 ( -2.01363e-08  2.0561e-08 ) ergs/cm2
 
Band function
Time interval is from    2.264 sec. to    3.264 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.30580   ( -7.10835   0.718355 )
beta        : -9.37160    ( 9.99999   20 )
Epeak [keV] : 544.953      ( -545.403 -545.403 )
Norm@50keV   : 9.57860E-03    ( -0.00243988   0.0248547 )
------------------------------------------------------------
# Chi-Squared =          62.37 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     55 degrees of freedom 
# Null hypothesis probability =   2.307758e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Mon Aug 10 04:41:28 EDT 2009