batgrbproduct Analysis for Trigger=100815

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Fri Jan  4 19:15:38 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger100815/GCN_download_cron
======================================================================

  Trigger: 00100815      Segment: 000

  BAT Trigger Time: 125786058.304   [s; MET]
      Trigger Stop: 125786062.4   [s; MET]
               UTC: 2004-12-26T20:34:18.976400    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 79.7656401246817   Dec: 73.3212972392719  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6
     Image Trigger?:     NO
     Rate S/N Ratio:     13.5646599662505  [ if not an image trigger ]
     Image S/N Ratio:    6

  Flight Position:   [ source = BAT ]
    RA: 79.7656401246817   Dec: 73.3212972392719  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 79.6874618521945   Dec: 73.3376001916431  [deg; J2000]  
        { 05h 18m 45.0s , +73d 20' 15.4" }
         +/- 3.29766236833098 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.04145465279576 [arcmin] (formal 1-sigma fit error)
    SNR: 5.53125684267825
    RA  =   5h 18m 45.0s  (79.687462 deg.)
    Dec =  73d 20' 15" (73.337600 deg.)
 
  Angular difference between Flight and Ground position is 1.663581 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 89.7119999974966 +/- 24.9702543066937
        Measured from: 0.184000000357628
                   to: 89.8959999978542     [s; relative to TRIGTIME]
     T50: 52.6719999909401 +/- 36.8094318305618
        Measured from: 3.91200000047684
                   to: 56.5839999914169     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.30799999833107     
                   to: 4.30799999833107     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.33600001037121     
                   to: 93.33599999547     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.156537   0.216717   0.070770   0.121234
           0.041302   0.040902   0.034843   0.029688 [error]
 Peak      0.007765   0.016967   0.016030   0.006904
           0.004338   0.004444   0.003939   0.003313 [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 3.88e-08 7.58e-08 1.15e-07 3.76e-07 3.22e-07 6.08e-07   erg/cm2
              Error 1.57e-08 1.84e-08 3.41e-08 2.59e-07 8.30e-08 2.82e-07   erg/cm2
Peak flux Power-law 9.16e-02 1.11e-01 9.77e-02 1.47e-01 3.52e-01 4.48e-01   ph/cm2/s
              Error 4.65e-02 3.53e-02 3.04e-02 9.83e-02 9.80e-02 1.29e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.89e-08 7.59e-08 1.15e-07 3.73e-07 3.22e-07 5.97e-07   erg/cm2
              Error 1.57e-08 1.84e-08 3.42e-08 2.57e-07 8.31e-08 2.80e-07   erg/cm2
Peak flux Cutoff-PL 7.37e-02 1.23e-01 1.07e-01 5.00e-02 3.37e-01 3.53e-01   ph/cm2/s
              Error 5.34e-02 4.43e-02 3.76e-02 1.02e-01 1.01e-01 1.56e-01   ph/cm2/s
 
Fluence        Band 3.92e-08 7.55e-08 1.15e-07 3.77e-07 3.24e-07 5.91e-07   erg/cm2
              Error 1.19e-08 1.77e-08 2.57e-08 3.35e-07 7.70e-08 3.01e-07   erg/cm2
Peak flux      Band 7.37e-02 1.23e-01 1.07e-01 4.99e-02 3.37e-01 3.53e-01   ph/cm2/s
              Error 5.35e-02 3.29e-02 3.70e-02 1.18e-01 1.01e-01 1.56e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.403    0.425    -      -           3.52e-04 8.06e-05   85.712 57
CPL   1.361    1.983     734.1    0.0      3.70e-04 8.11e-05   85.786 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.187    0.471    -      -           3.00e-03 8.15e-04   72.854 57
CPL   0.045    2.272      87.5 4976.3      1.10e-02 1.38e-01   71.836  0
 
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: 5.120000 sec.
T50 in the 50-300 keV band: 2.752000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   94.672   -1.336   93.336
T90    89.712    0.184   89.896
T50    52.672    3.912   56.584
Peak    1.000    3.308    4.308

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   79.6875 +73.3376 0.0346   11.9  144.2       0.4661     5.5  TRIG_00100815       
------------------------------------------
 
Foreground time interval of the image:
 -1.336  93.336 (delta_t =  94.672 [sec])
Background time interval of the image:
-299.304  -1.336 (delta_t = 297.968 [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   -1.336 sec. to   93.336 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40338     ( -0.432008   0.417271 )
Norm@50keV  : 3.523274E-04    ( -8.113161E-05   8.006167E-05) )
------------------------------------------------------------
 Chi-Squared =      85.71162     using    59 PHA bins.
 Reduced chi-squared =      1.503713     for     57 degrees of freedom
 Null hypothesis probability = 8.272E-03
 
Photon flux (15-150 keV)    in 94.67 sec: 4.293959E-02 ( -0.00982949  0.00985655 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.22088e-07 ( -8.1971e-08  8.41171e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.336 sec. to   93.336 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36131     ( -1.73290   2.23239 )
Epeak [keV] : 734.062      (   )
Norm@50keV  : 3.698860E-04    ( -8.257595E-05   7.971487E-05) )
------------------------------------------------------------
 Chi-Squared =      85.78554     using    59 PHA bins.
 Reduced chi-squared =      1.531885     for     56 degrees of freedom
 Null hypothesis probability = 6.388E-03
 
Photon flux (15-150 keV)    in 94.67 sec: 4.292730E-02 ( -0.00982683  0.00985357 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.22101e-07 ( -8.20316e-08  8.40906e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.336 sec. to   93.336 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.918383   ( -14.4071   0.592905 )
beta        : -1.54470    ( -0.788789   0.425834 )
Epeak [keV] : 84.0195      ( -29.5981 373.917 )
Norm@50keV   : 6.962497E-04    ( -4.65201   10.8751 )
------------------------------------------------------------
 Chi-Squared =      85.43819     using    59 PHA bins.
 Reduced chi-squared =      1.553422     for     55 degrees of freedom
 Null hypothesis probability = 5.330E-03
 
Photon flux (15-150 keV)    in 94.67 sec: 4.280787E-02 ( -0.00973603  0.00981025 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.23805e-07 ( -7.63163e-08  7.75906e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    3.304 sec. to    4.312 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.18684     ( -0.482905   0.458767 )
Norm@50keV  : 3.004013E-03    ( -8.150155E-04   8.150062E-04) )
------------------------------------------------------------
 Chi-Squared =      72.85444     using    59 PHA bins.
 Reduced chi-squared =      1.278148     for     57 degrees of freedom
 Null hypothesis probability = 7.677E-02
 
Photon flux (15-150 keV)    in 1.008 sec: 0.351975 ( -0.097724  0.098288 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.08402e-08 ( -9.12895e-09  9.35011e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    3.304 sec. to    4.312 sec.
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.488839E-02     ( -3.04489   1.49993 )
Epeak [keV] : 87.5383      ( -40.1184 9912.46 )
Norm@50keV  : 1.102195E-02    ( -1.102195E-02   0.264841 )
------------------------------------------------------------
 Chi-Squared =      71.83588     using    59 PHA bins.
 but latest trial   38.8745     gives Chi-Squared =   7.74988
 Reduced chi-squared =      1.282784     for     56 degrees of freedom
 Null hypothesis probability = 7.543E-02
 
Photon flux (15-150 keV)    in 1.008 sec: 0.337446 ( -0.101543  0.101323 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.83117e-08 ( -1.00885e-08  1.04365e-08 ) ergs/cm2
 
Band function
Time interval is from    3.304 sec. to    4.312 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -3.236709E-02   ( -9.96763   2.23336 )
beta        : -7.86291    ( -2.13709   17.8628 )
Epeak [keV] : 87.2332      ( -87.1332 9912.77 )
Norm@50keV   : 1.115817E-02    ( -1.115817E-02   1.520328E-02) )
------------------------------------------------------------
 Chi-Squared =      71.83587     using    59 PHA bins.
 Reduced chi-squared =      1.306107     for     55 degrees of freedom
 Null hypothesis probability = 6.328E-02
 
Photon flux (15-150 keV)    in 1.008 sec: 0.337385 ( -0.101319  0.101629 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.95198e-08 ( -1.06179e-08  9.24205e-09 ) ergs/cm2
 
Plot creation:
Fri Jan  4 19:27:18 EST 2008