batgrbproduct Analysis for Trigger=357621

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Fri Jul 17 12:41:05 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger357621/GCN5_download_cron
======================================================================

  Trigger: 00357621      Segment: 000

  BAT Trigger Time: 269487842.496   [s; MET]
      Trigger Stop: 269487843.52   [s; MET]
               UTC: 2009-07-17T01:43:57.578800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 222.881949561761   Dec: 20.8124596003905  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.69
     Image Trigger?:     NO
     Rate S/N Ratio:     13.228756555323  [ if not an image trigger ]
     Image S/N Ratio:    5.69

  Flight Position:   [ source = BAT ]
    RA: 222.881949561761   Dec: 20.8124596003905  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 222.85106717879   Dec: 20.7902904555842  [deg; J2000]  
        { 14h 51m 24.3s , +20d 47' 25.0" }
         +/- 3.69160841748251 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.68605437245852 [arcmin] (formal 1-sigma fit error)
    SNR: 4.70771692235391
 
  Angular difference between Flight and Ground position is 2.183961 arcmin
 
  Partial Coding Fraction: 0.7421875    [ including projection effects ]

  Duration
     T90: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     T50: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 1.02399998903275 second)
        Measured from: 2.98023223876953e-08     
                   to: 1.02400001883507     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.013614   0.003609   0.026253   0.042031
           0.008357   0.008922   0.009518   0.010802 [error]
 Peak      0.013614   0.003609   0.026253   0.042031
           0.008357   0.008922   0.009518   0.010802 [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 4.04e-10 2.79e-09 1.70e-08 5.10e-07 5.82e-08 5.30e-07   erg/cm2
              Error 1.05e-09 3.73e-09 1.31e-08 6.69e-07 4.15e-08 6.75e-07   erg/cm2
Peak flux Power-law 1.21e-02 4.43e-02 1.35e-01 1.30e+00 3.75e-01 1.49e+00   ph/cm2/s
              Error 3.23e-02 6.14e-02 1.06e-01 1.37e+00 2.86e-01 1.31e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.06e-10 1.74e-09 1.82e-08 2.05e-07 6.09e-08 2.25e-07   erg/cm2
              Error 9.60e-10 3.32e-09 1.10e-08 7.65e-07 2.56e-08 4.45e-07   erg/cm2
Peak flux Cutoff-PL 1.22e-02 4.44e-02 1.35e-01 1.29e+00 3.76e-01 1.48e+00   ph/cm2/s
              Error 3.22e-02 6.14e-02 1.06e-01 1.52e+00 2.86e-01 1.46e+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   -0.604    1.473    -      -           2.12e-03 2.22e-03   61.280 57
CPL  -4.854    0.000     166.8  161.5      8.70e-03 1.97e-02   60.810 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.604    1.473    -      -           2.12e-03 2.22e-03   61.280 57
CPL  -4.854    0.000     166.8  161.5      8.70e-03 1.97e-02   60.810 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    1.024    0.000    1.024
T90     1.024    0.000    1.024
T50     1.024    0.000    1.024
Peak    1.024    0.000    1.024

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  222.8511 +20.7903 0.0411   33.6 -174.7       0.0907     4.7  TRIG_00357621       
------------------------------------------
 
Foreground time interval of the image:
  0.000   1.024 (delta_t =   1.024 [sec])
Background time interval of the image:
-60.496 -10.496 (delta_t =  50.000 [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    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.604237     ( -1.80281   1.14284 )
Norm@50keV  : 2.11920E-03    ( -0.0021192   0.00231613 )
------------------------------------------------------------
# Chi-Squared =          61.28 using 59 PHA bins.
# Reduced chi-squared =          1.075 for     57 degrees of freedom 
# Null hypothesis probability =   3.252887e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.375270 ( -0.37527  0.19755 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.81901e-08 ( -5.81901e-08  2.48347e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.85433     (     )
Epeak [keV] : 166.828      ( -166.825 156.145 )
Norm@50keV  : 8.69999E-03    ( -0.00870142   0.0306837 )
------------------------------------------------------------
# Chi-Squared =          60.81 using 59 PHA bins.
# Reduced chi-squared =          1.086 for     56 degrees of freedom 
# Null hypothesis probability =   3.067549e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.376094 ( -0.376094  0.196633 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.09077e-08 ( -2.56114e-08  2.56031e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.106182   ( 0.106182   0.106182 )
beta        : 0.604365    ( -1.14175   1.80429 )
Epeak [keV] : 17.9784      ( -17.9811 -17.9811 )
Norm@50keV   : 3.55503E-03    ( -0.00355542   25806.6 )
------------------------------------------------------------
# Chi-Squared =          61.28 using 59 PHA bins.
# Reduced chi-squared =          1.114 for     55 degrees of freedom 
# Null hypothesis probability =   2.610742e-01
 
Photon flux (15-150 keV)    in 1.024 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    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.604237     ( -1.80281   1.14284 )
Norm@50keV  : 2.11920E-03    ( -0.0021192   0.00231613 )
------------------------------------------------------------
# Chi-Squared =          61.28 using 59 PHA bins.
# Reduced chi-squared =          1.075 for     57 degrees of freedom 
# Null hypothesis probability =   3.252887e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.375270 ( -0.37527  0.19755 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.81901e-08 ( -5.81901e-08  2.48347e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.85433     (     )
Epeak [keV] : 166.828      ( -166.825 156.145 )
Norm@50keV  : 8.69999E-03    ( -0.00870142   0.0306837 )
------------------------------------------------------------
# Chi-Squared =          60.81 using 59 PHA bins.
# Reduced chi-squared =          1.086 for     56 degrees of freedom 
# Null hypothesis probability =   3.067549e-01
 
Photon flux (15-150 keV)    in 1.024 sec: 0.376094 ( -0.376094  0.196633 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.09077e-08 ( -2.56114e-08  2.56031e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.106182   ( 0.106182   0.106182 )
beta        : 0.604365    ( -1.14175   1.80429 )
Epeak [keV] : 17.9784      ( -17.9811 -17.9811 )
Norm@50keV   : 3.55503E-03    ( -0.00355542   25806.6 )
------------------------------------------------------------
# Chi-Squared =          61.28 using 59 PHA bins.
# Reduced chi-squared =          1.114 for     55 degrees of freedom 
# Null hypothesis probability =   2.610742e-01
 
Photon flux (15-150 keV)    in 1.024 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Fri Jul 17 12:57:18 EDT 2009