batgrbproduct Analysis for Trigger=355083

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Thu Jun 18 23:12:01 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger355083/GCN5_download_cron
======================================================================

  Trigger: 00355083      Segment: 000

  BAT Trigger Time: 267006514.688   [s; MET]
      Trigger Stop: 267006515.712   [s; MET]
               UTC: 2009-06-18T08:28:29.851180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 294.021186499589   Dec: 78.3535968964309  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    22.57
     Image Trigger?:     NO
     Rate S/N Ratio:     85.8370549354997  [ if not an image trigger ]
     Image S/N Ratio:    22.57

  Flight Position:   [ source = BAT ]
    RA: 294.021186499589   Dec: 78.3535968964309  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 294.007899003661   Dec: 78.3519470015134  [deg; J2000]  
        { 19h 36m 01.9s , +78d 21' 07.0" }
         +/- 0.459963460374932 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.138384553040033 [arcmin] (formal 1-sigma fit error)
    SNR: 92.2448630843664
 
  Angular difference between Flight and Ground position is 0.188959 arcmin
 
  Partial Coding Fraction: 0.625    [ including projection effects ]

  Duration
     T90: 113.208000004292 +/- 0.593538562159812
        Measured from: 10.2360000908375
                   to: 123.444000095129     [s; relative to TRIGTIME]
     T50: 27.0840000212193 +/- 0.13971398319721
        Measured from: 60.9080000817776
                   to: 87.9920001029968     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 65.3840000033379     
                   to: 66.3840000033379     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.99599999189377     
                   to: 213.872000008821     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    51.206435  64.640782  46.088744  10.153736
           0.129103   0.142078   0.128498   0.087226 [error]
 Peak      1.153055   1.692015   1.386096   0.351589
           0.018098   0.021464   0.020594   0.013253 [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 1.78e-05 2.88e-05 3.51e-05 8.42e-05 1.06e-04 1.66e-04   erg/cm2
              Error 4.54e-07 4.57e-07 3.55e-07 1.80e-06 1.18e-06 1.87e-06   erg/cm2
Peak flux Power-law 1.24e+01 1.28e+01 9.42e+00 1.11e+01 3.89e+01 4.57e+01   ph/cm2/s
              Error 4.88e-01 3.02e-01 1.92e-01 4.97e-01 8.27e-01 8.44e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.59e-05 2.85e-05 3.65e-05 6.74e-05 1.05e-04 1.48e-04   erg/cm2
              Error 6.49e-07 4.73e-07 5.12e-07 3.93e-06 1.21e-06 4.19e-06   erg/cm2
Peak flux Cutoff-PL 1.13e+01 1.29e+01 9.74e+00 8.66e+00 3.80e+01 4.26e+01   ph/cm2/s
              Error 6.66e-01 3.12e-01 2.44e-01 1.04e+00 9.09e-01 1.50e+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    1.713    0.018    -      -           5.25e-02 6.20e-04   57.030 57
CPL   1.414    0.081     134.7   19.1      6.75e-02 4.46e-03   15.540 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.446    0.034    -      -           3.16e-01 5.85e-03   52.410 57
CPL   1.153    0.144     170.4   68.7      4.22e-01 5.88e-02   39.700 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: 107.712000 sec.
T50 in the 50-300 keV band: 23.104000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  218.868   -4.996  213.872
T90   113.208   10.236  123.444
T50    27.084   60.908   87.992
Peak    1.000   65.384   66.384

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  294.0079 +78.3519 0.0021   31.1   23.6      28.0540    92.2  TRIG_00355083       
------------------------------------------
 
Foreground time interval of the image:
 -4.996  53.813 (delta_t =  58.809 [sec])
Background time interval of the image:
-239.688 -78.758 (delta_t = 160.930 [sec])
-77.688  -4.996 (delta_t =  72.692 [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
Multiple GTIs in the spectrum
tstart tstop
-4.996000 108.052000
109.312000 213.872000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71263     ( -0.018401   0.0183194 )
Norm@50keV  : 5.25094E-02    ( -0.000620201   0.00061888 )
------------------------------------------------------------
# Chi-Squared =          57.03 using 59 PHA bins.
# Reduced chi-squared =          1.000 for     57 degrees of freedom 
# Null hypothesis probability =   4.740478e-01
 
Photon flux (15-150 keV)    in 217.6 sec: 7.00487 ( -0.112838  0.113409 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0.00010569 ( -1.17927e-06  1.18026e-06 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-4.996000 108.052000
109.312000 213.872000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41409     ( -0.0812219   0.0800649 )
Epeak [keV] : 134.684      ( -14.4221 23.8664 )
Norm@50keV  : 6.74574E-02    ( -0.00429184   0.00462784 )
------------------------------------------------------------
# Chi-Squared =          15.54 using 59 PHA bins.
# Reduced chi-squared =         0.2776 for     56 degrees of freedom 
# Null hypothesis probability =   1.000000e+00
 
Photon flux (15-150 keV)    in 217.6 sec: 6.72111 ( -0.13042  0.13176 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0.000104538 ( -1.20659e-06  1.20855e-06 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-4.996000 108.052000
109.312000 213.872000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.41408   ( -0.037989   0.0929347 )
beta        : -10.00000    ( 2.30628e+13   2.30628e+13 )
Epeak [keV] : 134.660      ( -14.4209 23.8596 )
Norm@50keV   : 6.74471E-02    ( -0.0042916   0.00462898 )
------------------------------------------------------------
# Chi-Squared =          15.54 using 59 PHA bins.
# Reduced chi-squared =         0.2826 for     55 degrees of freedom 
# Null hypothesis probability =   1.000000e+00
 
Photon flux (15-150 keV)    in 217.6 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   65.384 sec. to   66.384 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44615     ( -0.034106   0.0341034 )
Norm@50keV  : 0.316095    ( -0.00585234   0.00585079 )
------------------------------------------------------------
# Chi-Squared =          52.41 using 59 PHA bins.
# Reduced chi-squared =         0.9195 for     57 degrees of freedom 
# Null hypothesis probability =   6.477039e-01
 
Photon flux (15-150 keV)    in 1 sec: 38.9173 ( -0.826139  0.828743 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.02695e-06 ( -5.68958e-08  5.69125e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   65.384 sec. to   66.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.15328     ( -0.146007   0.141805 )
Epeak [keV] : 170.430      ( -37.3792 100.038 )
Norm@50keV  : 0.422022    ( -0.0539242   0.063706 )
------------------------------------------------------------
# Chi-Squared =          39.70 using 59 PHA bins.
# Reduced chi-squared =         0.7089 for     56 degrees of freedom 
# Null hypothesis probability =   9.512282e-01
 
Photon flux (15-150 keV)    in 1 sec: 38.0351 ( -0.9102  0.9087 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.98775e-06 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   65.384 sec. to   66.384 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.856541   ( -0.389016   0.736066 )
beta        : -1.57605    ( 1.57608   0.0833306 )
Epeak [keV] : 92.8692      ( -38.8275 129.176 )
Norm@50keV   : 0.618157    ( -0.231928   1.16697 )
------------------------------------------------------------
# Chi-Squared =          38.22 using 59 PHA bins.
# Reduced chi-squared =         0.6949 for     55 degrees of freedom 
# Null hypothesis probability =   9.585792e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Plot creation:
Thu Jun 18 23:32:33 EDT 2009