batgrbproduct Analysis for Trigger=208183

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Dec 31 21:43:52 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger208183/GCN5_download_cron
======================================================================

  Trigger: 00208183      Segment: 000

  BAT Trigger Time: 168240776.608   [s; MET]
      Trigger Stop: 168240776.992   [s; MET]
               UTC: 2006-05-02T05:32:55.440100    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) Expanded to TRIGTIME - 32 ms to TRIGTIME + 320 ms

  BAT 
    RA: 135.900344538918   Dec: -18.1089959986378  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.85
     Image Trigger?:     NO
     Rate S/N Ratio:     8.06225774829855  [ if not an image trigger ]
     Image S/N Ratio:    6.85

  Flight Position:   [ source = BAT ]
    RA: 135.900344538918   Dec: -18.1089959986378  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 136.028056993898   Dec: -18.0270673873226  [deg; J2000]  
        { 09h 04m 06.7s , -18d 01' 37.4" }
         +/- 6.37171765969446 [arcmin] (estimated 90% radius based on SNR)
         +/- 4.23995083329064 [arcmin] (formal 1-sigma fit error)
    SNR: 2.15864133791382
    RA  =   9h  4m  6.7s  (136.028057 deg.)
    Dec = -18d  1' 37" (-18.027067 deg.)
 
  Angular difference between Flight and Ground position is 8.788280 arcmin
 
  Partial Coding Fraction: 0.859375    [ including projection effects ]

  Duration
     T90: 0.38400000333786 +/- 
        Measured from: 0
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     T50: 0.38400000333786 +/- 
        Measured from: 0
                   to: 0.38400000333786     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.38400000333786 second)
        Measured from: 0     
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.38400000333786     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.000105   0.000223   0.005705   0.003115
           0.003052   0.003038   0.002559   0.002323 [error]
 Peak      0.000105   0.000223   0.005705   0.003115
           0.003052   0.003038   0.002559   0.002323 [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 3.10e-10 8.44e-10 1.83e-09 1.04e-08 4.95e-09 1.35e-08   erg/cm2
              Error 6.37e-10 1.07e-09 1.85e-09 2.97e-08 5.01e-09 2.99e-08   erg/cm2
Peak flux Power-law 2.54e-02 3.82e-02 4.11e-02 8.35e-02 1.31e-01 1.89e-01   ph/cm2/s
              Error 5.39e-02 4.92e-02 4.15e-02 1.81e-01 1.50e-01 1.90e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.00e-11 8.68e-10 3.27e-09 3.02e-09 6.32e-09 7.41e-09   erg/cm2
              Error 4.39e-10 1.13e-09 2.68e-09 1.33e-08 5.06e-09 1.45e-08   erg/cm2
Peak flux Cutoff-PL 7.08e-03 3.65e-02 7.31e-02 3.68e-02 1.45e-01 1.53e-01   ph/cm2/s
              Error 3.69e-02 4.98e-02 6.71e-02 9.63e-02 1.37e-01 1.17e-01   ph/cm2/s
 
Fluence        Band 2.91e-11 6.26e-10 3.63e-09 2.75e-09 6.54e-09 7.16e-09   erg/cm2
              Error 2.28e-10 7.53e-10 3.23e-09 2.41e-09 4.95e-09 1.15e-08   erg/cm2
Peak flux      Band 2.43e-03 2.65e-02 8.16e-02 3.52e-02 1.40e-01 1.42e-01   ph/cm2/s
              Error 1.62e-02 4.40e-02 8.33e-02 6.56e-02 1.27e-01 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.881    6.500    -      -           1.14e-03 1.25e-03   59.247 57
CPL   0.872    6.500    9999.1 5000.0      1.15e-03 1.26e-03   59.242 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.881    6.500    -      -           1.14e-03 1.25e-03   59.247 57
CPL   0.872    6.500    9999.1 5000.0      1.15e-03 1.26e-03   59.242 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    0.384    0.000    0.384
T90     0.384    0.000    0.384
T50     0.384    0.000    0.384
Peak    0.384    0.000    0.384

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  136.0281 -18.0271 0.0890   22.0   23.3       0.0123     2.2  TRIG_00208183       
------------------------------------------
 
Foreground time interval of the image:
 -0.032   0.352 (delta_t =   0.384 [sec])
Background time interval of the image:
-239.640  -8.640 (delta_t = 231.000 [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   -0.032 sec. to    0.352 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.880537     ( -3.88054   9.11946 )
Norm@50keV  : 1.136623E-03    ( -1.136623E-03   1.370124E-03) )
------------------------------------------------------------
 Chi-Squared =      59.24745     using    59 PHA bins.
 Reduced chi-squared =      1.039429     for     57 degrees of freedom
 Null hypothesis probability = 0.394
 
Photon flux (15-150 keV)    in 0.3840 sec: 0.130868 ( -0.130868  0.16869 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.94573e-09 ( -4.94573e-09  5.06484e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.872424     ( -3.87242   9.12758 )
Epeak [keV] : 9999.13      ( -9999.12 0.865234 )
Norm@50keV  : 1.147943E-03    ( -1.147943E-03   1.372126E-03) )
------------------------------------------------------------
 Chi-Squared =      59.24195     using    59 PHA bins.
 Reduced chi-squared =      1.057892     for     56 degrees of freedom
 Null hypothesis probability = 0.358
 
Photon flux (15-150 keV)    in 0.3840 sec: 0.144799 ( -0.144799  0.129483 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.31972e-09 ( -5.06319e-09  5.05617e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.37693   ( -15.0000   0.00000 )
beta        : -9.34151    ( -9.536743E-06   20.0000 )
Epeak [keV] : 98.6814      ( -34.9252 58.5055 )
Norm@50keV   : 3.624986E-02    ( -5.746454E-02   0.735733 )
------------------------------------------------------------
 Chi-Squared =      57.20312     using    59 PHA bins.
 Reduced chi-squared =      1.040057     for     55 degrees of freedom
 Null hypothesis probability = 0.393
 
Photon flux (15-150 keV)    in 0.3840 sec: 0.139954 ( -0.139954  0.113966 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.53975e-09 ( -4.94546e-09  4.94546e-09 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.880537     ( -3.88054   9.11946 )
Norm@50keV  : 1.136623E-03    ( -1.136623E-03   1.370124E-03) )
------------------------------------------------------------
 Chi-Squared =      59.24745     using    59 PHA bins.
 Reduced chi-squared =      1.039429     for     57 degrees of freedom
 Null hypothesis probability = 0.394
 
Photon flux (15-150 keV)    in 0.3840 sec: 0.130868 ( -0.130868  0.16869 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.94573e-09 ( -4.94573e-09  5.06484e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.032 sec. to    0.352 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.872424     ( -3.87242   9.12758 )
Epeak [keV] : 9999.13      ( -9999.12 0.865234 )
Norm@50keV  : 1.147943E-03    ( -1.147943E-03   1.372126E-03) )
------------------------------------------------------------
 Chi-Squared =      59.24195     using    59 PHA bins.
 Reduced chi-squared =      1.057892     for     56 degrees of freedom
 Null hypothesis probability = 0.358
 
Photon flux (15-150 keV)    in 0.3840 sec: 0.144799 ( -0.144799  0.129483 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.31972e-09 ( -5.06319e-09  5.05617e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.032 sec. to    0.352 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.37693   ( -15.0000   0.00000 )
beta        : -9.34151    ( -9.536743E-06   20.0000 )
Epeak [keV] : 98.6814      ( -34.9252 58.5055 )
Norm@50keV   : 3.624986E-02    ( -5.746454E-02   0.735733 )
------------------------------------------------------------
 Chi-Squared =      57.20312     using    59 PHA bins.
 Reduced chi-squared =      1.040057     for     55 degrees of freedom
 Null hypothesis probability = 0.393
 
Photon flux (15-150 keV)    in 0.3840 sec: 0.139954 ( -0.139954  0.113966 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.53975e-09 ( -4.94546e-09  4.94546e-09 ) ergs/cm2
 
Plot creation:
Mon Dec 31 21:57:42 EST 2007