batgrbproduct Analysis for Trigger=354855

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Mon Jun 15 02:24:31 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger354855/GCN5_download_cron
======================================================================

  Trigger: 00354855      Segment: 000

  BAT Trigger Time: 266663416.96   [s; MET]
      Trigger Stop: 266663417.088   [s; MET]
               UTC: 2009-06-14T09:10:12.134160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 153.02917651408   Dec: -47.4253106191339  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.74
     Image Trigger?:     NO
     Rate S/N Ratio:     5.8309518948453  [ if not an image trigger ]
     Image S/N Ratio:    5.74

  Flight Position:   [ source = BAT ]
    RA: 153.02917651408   Dec: -47.4253106191339  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 153.051430778791   Dec: -47.4092266018647  [deg; J2000]  
        { 10h 12m 12.3s , -47d 24' 33.2" }
         +/- 3.92904969163152 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.90688859962295 [arcmin] (formal 1-sigma fit error)
    SNR: 4.30661656415742
 
  Angular difference between Flight and Ground position is 1.321979 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 0.127999991178513 +/- 
        Measured from: 0
                   to: 0.127999991178513     [s; relative to TRIGTIME]
     T50: 0.127999991178513 +/- 
        Measured from: 0
                   to: 0.127999991178513     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.127999991178513 second)
        Measured from: -1.49011611938477e-08     
                   to: 0.127999976277351     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.127999991178513     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.000675   0.006024   0.007118   0.002468
           0.001654   0.001831   0.001761   0.001431 [error]
 Peak     -0.000675   0.006024   0.007118   0.002468
           0.001654   0.001831   0.001761   0.001431 [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 6.53e-10 1.64e-09 3.28e-09 1.64e-08 8.86e-09 2.21e-08   erg/cm2
              Error 4.31e-10 7.36e-10 1.28e-09 1.21e-08 3.41e-09 1.29e-08   erg/cm2
Peak flux Power-law 1.63e-01 2.21e-01 2.22e-01 4.05e-01 7.38e-01 1.01e+00   ph/cm2/s
              Error 1.09e-01 1.02e-01 8.54e-02 2.68e-01 2.83e-01 3.91e-01   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 4.60e-02 2.14e-01 3.52e-01 7.37e-01 0.00e+00 0.00e+00   ph/cm2/s
              Error 7.02e-02 1.21e-01 1.22e-01 2.77e-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 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    0.990    0.519    -      -           6.38e-03 2.50e-03   81.690 57
CPL  -2.574    0.065      86.4   39.9      1.34e-01 4.30e-01   75.870 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.990    0.519    -      -           6.38e-03 2.50e-03   81.690 57
CPL  -2.574    0.065      86.4   39.9      1.34e-01 4.30e-01   75.870 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    0.128    0.000    0.128
T90     0.128    0.000    0.128
T50     0.128    0.000    0.128
Peak    0.128   -0.000    0.128

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  153.0514 -47.4092 0.0446   14.5  -41.0       0.0147     4.3  TRIG_00354855       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.128 (delta_t =   0.128 [sec])
Background time interval of the image:
-60.960  -0.960 (delta_t =  60.000 [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    0.128 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.989615     ( -0.537356   0.501327 )
Norm@50keV  : 6.37721E-03    ( -0.00250891   0.00248936 )
------------------------------------------------------------
# Chi-Squared =          81.69 using 59 PHA bins.
# Reduced chi-squared =          1.433 for     57 degrees of freedom 
# Null hypothesis probability =   1.768035e-02
 
Photon flux (15-150 keV)    in 0.128 sec: 0.738465 ( -0.27871  0.287321 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.85769e-09 ( -3.3902e-09  3.42022e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.128 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.57426     ( 2.61505   2.74594 )
Epeak [keV] : 86.3715      ( -22.1833 57.5366 )
Norm@50keV  : 0.134149    ( -0.138115   0.722778 )
------------------------------------------------------------
# Chi-Squared =          75.87 using 59 PHA bins.
# Reduced chi-squared =          1.355 for     56 degrees of freedom 
# Null hypothesis probability =   3.975741e-02
 
Photon flux (15-150 keV)    in 0.128 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.128 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.60398   ( -3.07801   -2.90632 )
beta        : -9.99999    ( 223897   223907 )
Epeak [keV] : 85.9293      ( -21.8947 57.8525 )
Norm@50keV   : 0.139158    ( -0.1392   0.758961 )
------------------------------------------------------------
# Chi-Squared =          75.87 using 59 PHA bins.
# Reduced chi-squared =          1.379 for     55 degrees of freedom 
# Null hypothesis probability =   3.259462e-02
 
Photon flux (15-150 keV)    in 0.128 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    0.128 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.989615     ( -0.537356   0.501327 )
Norm@50keV  : 6.37721E-03    ( -0.00250891   0.00248936 )
------------------------------------------------------------
# Chi-Squared =          81.69 using 59 PHA bins.
# Reduced chi-squared =          1.433 for     57 degrees of freedom 
# Null hypothesis probability =   1.768035e-02
 
Photon flux (15-150 keV)    in 0.128 sec: 0.738465 ( -0.27871  0.287321 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.85769e-09 ( -3.3902e-09  3.42022e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.128 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.57426     ( 2.61505   2.74594 )
Epeak [keV] : 86.3715      ( -22.1833 57.5366 )
Norm@50keV  : 0.134149    ( -0.138115   0.722778 )
------------------------------------------------------------
# Chi-Squared =          75.87 using 59 PHA bins.
# Reduced chi-squared =          1.355 for     56 degrees of freedom 
# Null hypothesis probability =   3.975741e-02
 
Photon flux (15-150 keV)    in 0.128 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.128 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.60398   ( -3.07801   -2.90632 )
beta        : -9.99999    ( 223897   223907 )
Epeak [keV] : 85.9293      ( -21.8947 57.8525 )
Norm@50keV   : 0.139158    ( -0.1392   0.760825 )
------------------------------------------------------------
# Chi-Squared =          75.87 using 59 PHA bins.
# Reduced chi-squared =          1.379 for     55 degrees of freedom 
# Null hypothesis probability =   3.259462e-02
 
Photon flux (15-150 keV)    in 0.128 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Mon Jun 15 02:31:48 EDT 2009