batgrbproduct Analysis for Trigger=229185

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Wed Jan  2 04:23:00 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger229185/GCN5_download_cron
======================================================================

  Trigger: 00229185      Segment: 000

  BAT Trigger Time: 179762155.584   [s; MET]
      Trigger Stop: 179762156.608   [s; MET]
               UTC: 2006-09-12T13:55:54.144260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 5.28584793860298   Dec: 20.9715924063833  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    19.85
     Image Trigger?:     NO
     Rate S/N Ratio:     81.3879597975032  [ if not an image trigger ]
     Image S/N Ratio:    19.85

  Flight Position:   [ source = BAT ]
    RA: 5.28584793860298   Dec: 20.9715924063833  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 5.28142841761413   Dec: 20.9685989496078  [deg; J2000]  
        { 00h 21m 07.5s , +20d 58' 07.0" }
         +/- 0.904823282199918 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.267952706323004 [arcmin] (formal 1-sigma fit error)
    SNR: 35.0889313228669
    RA  =   0h 21m  7.5s  (5.281428 deg.)
    Dec =  20d 58'  7" (20.968599 deg.)
 
  Angular difference between Flight and Ground position is 0.305890 arcmin
 
  Partial Coding Fraction: 0.3359375    [ including projection effects ]

  Duration
     T90: 5.0440000295639 +/- 0.579999999547827
        Measured from: -0.131999999284744
                   to: 4.91200003027916     [s; relative to TRIGTIME]
     T50: 1.75600001215935 +/- 0.186290068818423
        Measured from: 0.376000016927719
                   to: 2.13200002908707     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0     
                   to: 1     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.563999980688095     
                   to: 6.11599999666214     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.716063   0.821953   0.569198   0.120961
           0.027358   0.029063   0.025193   0.020407 [error]
 Peak      0.274784   0.385600   0.244499   0.050386
           0.013868   0.015269   0.013196   0.009473 [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 2.35e-07 3.72e-07 4.44e-07 1.03e-06 1.35e-06 2.09e-06   erg/cm2
              Error 1.91e-08 1.72e-08 2.65e-08 1.39e-07 6.17e-08 1.55e-07   erg/cm2
Peak flux Power-law 3.19e+00 2.88e+00 1.79e+00 1.70e+00 8.58e+00 9.56e+00   ph/cm2/s
              Error 2.75e-01 1.51e-01 1.13e-01 2.19e-01 4.42e-01 4.64e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.35e-07 3.72e-07 4.45e-07 1.03e-06 1.35e-06 1.83e-06   erg/cm2
              Error 1.91e-08 1.72e-08 2.66e-08 1.38e-07 6.17e-08 0.00e+00   erg/cm2
Peak flux Cutoff-PL 2.97e+00 2.98e+00 1.85e+00 1.14e+00 8.42e+00 8.93e+00   ph/cm2/s
              Error 3.29e-01 1.75e-01 1.28e-01 4.06e-01 4.60e-01 6.23e-01   ph/cm2/s
 
Fluence        Band 2.29e-07 3.71e-07 4.44e-07 1.03e-06 1.35e-06 1.90e-06   erg/cm2
              Error 2.09e-08 1.71e-08 2.65e-08 1.38e-07 6.16e-08 0.00e+00   erg/cm2
Peak flux      Band 2.97e+00 2.98e+00 1.85e+00 1.14e+00 8.42e+00 8.94e+00   ph/cm2/s
              Error 3.29e-01 1.75e-01 1.28e-01 4.06e-01 4.61e-01 6.24e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.743    0.086    -      -           2.19e-02 9.67e-04   61.136 57
CPL   1.711    0.156     441.0    0.0      2.27e-02 9.71e-04   61.453 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.684    0.087    -      -           6.49e-02 3.25e-03   45.721 57
CPL   1.305    0.342      92.8  118.7      1.01e-01 4.02e-02   41.740 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: 5.632000 sec.
T50 in the 50-300 keV band: 1.920000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    6.680   -0.564    6.116
T90     5.044   -0.132    4.912
T50     1.756    0.376    2.132
Peak    1.000    0.000    1.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
    5.2814 +20.9686 0.0055   33.2  125.7       2.2466    35.1  TRIG_00229185       
------------------------------------------
 
Foreground time interval of the image:
 -0.564   6.116 (delta_t =   6.680 [sec])
Background time interval of the image:
-239.584  -0.564 (delta_t = 239.020 [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   -0.564 sec. to    6.116 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.74286     ( -8.516479E-02   8.593845E-02) )
Norm@50keV  : 2.189389E-02    ( -9.681433E-04   9.649731E-04) )
------------------------------------------------------------
 Chi-Squared =      61.13601     using    59 PHA bins.
 Reduced chi-squared =      1.072562     for     57 degrees of freedom
 Null hypothesis probability = 0.330
 
Photon flux (15-150 keV)    in 6.680 sec: 2.95267 ( -0.13899  0.13958 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.35005e-06 ( -6.16096e-08  6.18501e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.564 sec. to    6.116 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71106     ( -0.189599   0.121711 )
Epeak [keV] : 441.025      (   )
Norm@50keV  : 2.272807E-02    ( -9.722803E-04   9.691454E-04) )
------------------------------------------------------------
 Chi-Squared =      61.45306     using    59 PHA bins.
 Reduced chi-squared =      1.097376     for     56 degrees of freedom
 Null hypothesis probability = 0.287
 
Photon flux (15-150 keV)    in 6.680 sec: 2.95111 ( -0.13892  0.13952 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.35019e-06 ( -6.16364e-08  6.18568e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.564 sec. to    6.116 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.18261   ( -8.81739   2.59795 )
beta        : -1.74705    ( -9.835923E-02   8.755541E-02) )
Epeak [keV] : 31.2676      ( -31.1676 9968.73 )
Norm@50keV   : 6.187234E-02    ( -6.187234E-02   302.893 )
------------------------------------------------------------
 Chi-Squared =      61.01851     using    59 PHA bins.
 Reduced chi-squared =      1.109427     for     55 degrees of freedom
 Null hypothesis probability = 0.269
 
Photon flux (15-150 keV)    in 6.680 sec: 2.94987 ( -0.07424  0.13545 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.34847e-06 ( -6.14961e-08  6.16631e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    1.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.68428     ( -8.645368E-02   8.712113E-02) )
Norm@50keV  : 6.494950E-02    ( -3.257751E-03   3.248475E-03) )
------------------------------------------------------------
 Chi-Squared =      45.72053     using    59 PHA bins.
 Reduced chi-squared =     0.8021146     for     57 degrees of freedom
 Null hypothesis probability = 0.858
 
Photon flux (15-150 keV)    in 1.000 sec: 8.57921 ( -0.44159  0.44247 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.02134e-07 ( -3.1508e-08  3.1608e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30513     ( -0.355262   0.327787 )
Epeak [keV] : 92.7609      ( -23.4842 213.996 )
Norm@50keV  : 0.100623    ( -3.095873E-02   4.945318E-02) )
------------------------------------------------------------
 Chi-Squared =      41.73995     using    59 PHA bins.
 Reduced chi-squared =     0.7453563     for     56 degrees of freedom
 Null hypothesis probability = 0.922
 
Photon flux (15-150 keV)    in 1.000 sec: 8.42383 ( -0.45996  0.46004 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.88624e-07 ( -3.3958e-08  3.4117e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.30569   ( -0.327245   0.355876 )
beta        : -8.85036    ( -8.19708   0.141816 )
Epeak [keV] : 92.8489      ( -11.3106 146.928 )
Norm@50keV   : 0.100528    ( -8.18915   2811.97 )
------------------------------------------------------------
 Chi-Squared =      41.73976     using    59 PHA bins.
 Reduced chi-squared =     0.7589047     for     55 degrees of freedom
 Null hypothesis probability = 0.906
 
Photon flux (15-150 keV)    in 1.000 sec: 8.42357 ( -0.46043  0.46113 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.88244e-07 ( -3.4112e-08  3.3915e-08 ) ergs/cm2
 
Plot creation:
Wed Jan  2 04:38:17 EST 2008