batgrbproduct Analysis for Trigger=352188

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.44
    Process Start Time (local time): Sat May 16 21:07:46 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger352188/GCN5_download_cron
======================================================================

  Trigger: 00352188      Segment: 000

  BAT Trigger Time: 264147616.928   [s; MET]
      Trigger Stop: 264147616.992   [s; MET]
               UTC: 2009-05-16T06:20:12.182660    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 98.4746868346953   Dec: 19.446673411715  [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:     6.16441400296898  [ if not an image trigger ]
     Image S/N Ratio:    5.78

  Flight Position:   [ source = BAT ]
    RA: 98.4746868346953   Dec: 19.446673411715  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 98.4796473483098   Dec: 19.5042750195953  [deg; J2000]  
        { 06h 33m 55.1s , +19d 30' 15.4" }
         +/- 3.92077029233634 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.14564179018855 [arcmin] (formal 1-sigma fit error)
    SNR: 4.3196141289609
 
  Angular difference between Flight and Ground position is 3.467469 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     0.012153  -0.000832   0.002224  -0.001213
           0.002477   0.001864   0.001762   0.001689 [error]
 Peak      0.012153  -0.000832   0.002224  -0.001213
           0.002477   0.001864   0.001762   0.001689 [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 2.20e-09 1.08e-09 3.23e-10 1.23e-10 3.67e-09 3.72e-09   erg/cm2
              Error 1.23e-09 8.76e-10 3.67e-10 2.58e-10 1.98e-09 2.04e-09   erg/cm2
Peak flux Power-law 1.16e+00 3.24e-01 4.86e-02 8.29e-03 1.54e+00 1.54e+00   ph/cm2/s
              Error 6.60e-01 2.60e-01 5.39e-02 1.61e-02 1.17e+00 1.18e+00   ph/cm2/s
 
Fluence   Cutoff-PL 2.21e-09 2.93e-09 7.22e-10 3.09e-12 7.27e-18 3.67e-09   erg/cm2
              Error 7.53e-10 7.78e-11 2.88e-12 1.76e-09 2.22e-09 0.00e+00   erg/cm2
Peak flux Cutoff-PL 1.16e+00 3.24e-01 4.85e-02 8.23e-03 1.54e+00 1.54e+00   ph/cm2/s
              Error 6.60e-01 2.60e-01 5.39e-02 1.60e-02 1.17e+00 1.18e+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 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    3.737    1.263    -      -           3.13e-03 3.01e-03   58.700 57
CPL   1.000    0.000      50.0    0.0      7.01e-03 0.00e+00   65.740 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.737    1.263    -      -           3.13e-03 3.01e-03   58.700 57
CPL   1.000    0.000      50.0    0.0      7.01e-03 0.00e+00   65.740 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
   98.4796 +19.5043 0.0446   41.5  -16.8       0.0165     4.3  TRIG_00352188       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.064 (delta_t =   0.064 [sec])
Background time interval of the image:
-24.527  -8.928 (delta_t =  15.599 [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: 3.73730     ( -0.885976   1.6391 )
Norm@50keV  : 3.12691E-03    ( -0.00312682   0.00289699 )
------------------------------------------------------------
# Chi-Squared =          58.70 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     57 degrees of freedom 
# Null hypothesis probability =   4.130359e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 1.53897 ( -1.53897  0.810626 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.6676e-09 ( -1.98719e-09  1.97797e-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: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 7.01397E-03    (     )
------------------------------------------------------------
# Chi-Squared =          65.74 using 59 PHA bins.
# Reduced chi-squared =          1.174 for     56 degrees of freedom 
# Null hypothesis probability =   1.751406e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 1.53839 ( -1.53839  0.81026 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.67071e-09 ( -1.73538e-09  1.7898e-09 ) 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       : 2.67338   ( 1.05987   1.05987 )
beta        : -9.37167    ( 4.81015   13.5191 )
Epeak [keV] : 14.1592      ( -6.65468 14.9418 )
Norm@50keV   : 1172.93    ( -1172.93   118552 )
------------------------------------------------------------
# Chi-Squared =          56.23 using 59 PHA bins.
# Reduced chi-squared =          1.022 for     55 degrees of freedom 
# Null hypothesis probability =   4.285193e-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: 3.73730     ( -0.885976   1.6391 )
Norm@50keV  : 3.12691E-03    ( -0.00312682   0.00289699 )
------------------------------------------------------------
# Chi-Squared =          58.70 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     57 degrees of freedom 
# Null hypothesis probability =   4.130359e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 1.53897 ( -1.53897  0.810626 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.6676e-09 ( -1.98719e-09  1.97797e-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: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 7.01397E-03    (     )
------------------------------------------------------------
# Chi-Squared =          65.74 using 59 PHA bins.
# Reduced chi-squared =          1.174 for     56 degrees of freedom 
# Null hypothesis probability =   1.751406e-01
 
Photon flux (15-150 keV)    in 0.064 sec: 1.53839 ( -1.53839  0.81026 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.67071e-09 ( -1.73538e-09  1.7898e-09 ) 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       : 2.67338   ( 1.05987   1.05987 )
beta        : -9.37167    ( 4.81015   13.5191 )
Epeak [keV] : 14.1592      ( -6.65468 14.9418 )
Norm@50keV   : 1172.93    ( -1172.93   118552 )
------------------------------------------------------------
# Chi-Squared =          56.23 using 59 PHA bins.
# Reduced chi-squared =          1.022 for     55 degrees of freedom 
# Null hypothesis probability =   4.285193e-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:
Sat May 16 21:22:05 EDT 2009