batgrbproduct Analysis for Trigger=191157

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Dec 31 12:41:08 EST 2007
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger191157/SDC
======================================================================

  Trigger: 00191157      Segment: 000

  BAT Trigger Time: 161926472   [s; MET]
      Trigger Stop: 161926552   [s; MET]
               UTC: 2006-02-18T03:34:30.977720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 50.4036197387777   Dec: 16.8660799646394  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.84
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.84

  Flight Position:   [ source = BAT ]
    RA: 50.4036197387777   Dec: 16.8660799646394  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 50.3775593937223   Dec: 16.912875536654  [deg; J2000]  
        { 03h 21m 30.6s , +16d 54' 46.4" }
         +/- 2.65159546888502 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.31295553223235 [arcmin] (formal 1-sigma fit error)
    SNR: 7.55280021218986
    RA  =   3h 21m 30.6s  (50.377559 deg.)
    Dec =  16d 54' 46" (16.912876 deg.)
 
  Angular difference between Flight and Ground position is 3.181496 arcmin
 
  Partial Coding Fraction: 0.8828125    [ including projection effects ]

  Duration
     T90: 80 +/- 
        Measured from: 0
                   to: 80     [s; relative to TRIGTIME]
     T50: 80 +/- 
        Measured from: 0
                   to: 80     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 80 second)
        Measured from: 0     
                   to: 80     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 80     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.308617   0.357794   0.068043  -0.088415
           0.043336   0.044369   0.040137   0.038665 [error]
 Peak      0.308617   0.357794   0.068043  -0.088415
           0.043336   0.044369   0.040137   0.038665 [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 1.08e-07 1.21e-07 9.72e-08 1.29e-07 3.74e-07 4.56e-07   erg/cm2
              Error 2.09e-08 2.16e-08 3.27e-08 8.15e-08 7.74e-08 1.28e-07   erg/cm2
Peak flux Power-law 4.44e-02 2.77e-02 1.11e-02 5.98e-03 8.62e-02 8.91e-02   ph/cm2/s
              Error 8.73e-03 4.79e-03 3.61e-03 3.52e-03 1.38e-02 1.45e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.02e-07 1.48e-07 6.28e-08 4.84e-09 3.18e-07 3.18e-07   erg/cm2
              Error 2.32e-08 3.11e-08 4.38e-08 3.05e-08 7.22e-08 7.88e-08   erg/cm2
Peak flux Cutoff-PL 4.11e-02 3.38e-02 7.73e-03 3.26e-04 8.30e-02 8.30e-02   ph/cm2/s
              Error 9.78e-03 6.98e-03 4.94e-03 1.67e-03 1.36e-02 1.37e-02   ph/cm2/s
 
Fluence        Band 1.00e-07 1.50e-07 5.64e-08 7.42e-09 3.13e-07 3.15e-07   erg/cm2
              Error 2.33e-08 3.08e-08 4.25e-08 6.46e-08 7.84e-08 1.14e-07   erg/cm2
Peak flux      Band 3.96e-02 3.52e-02 6.20e-03 1.11e-04 8.11e-02 8.11e-02   ph/cm2/s
              Error 9.57e-03 6.19e-03 2.44e-03 9.91e-04 1.72e-02 1.45e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.320    0.321    -      -           4.88e-04 1.22e-04   46.204 57
CPL   0.201    2.175      29.1   18.5      1.15e-02 3.39e-01   41.447 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.320    0.321    -      -           4.88e-04 1.22e-04   46.204 57
CPL   0.201    2.175      29.1   18.5      1.15e-02 3.39e-01   41.447 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   80.000    0.000   80.000
T90    80.000    0.000   80.000
T50    80.000    0.000   80.000
Peak   80.000    0.000   80.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   50.3776 +16.9129 0.0253   25.0  178.4       0.6921     7.6  TRIG_00191157       
------------------------------------------
 
Foreground time interval of the image:
  0.000  80.000 (delta_t =  80.000 [sec])
Background time interval of the image:

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   80.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.32037     ( -0.302389   0.340463 )
Norm@50keV  : 4.877083E-04    ( -1.222869E-04   1.214680E-04) )
------------------------------------------------------------
 Chi-Squared =      46.20377     using    59 PHA bins.
 Reduced chi-squared =     0.8105924     for     57 degrees of freedom
 Null hypothesis probability = 0.846
 
Photon flux (15-150 keV)    in 80.00 sec: 8.620641E-02 ( -0.0137732  0.0137826 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.74326e-07 ( -7.5372e-08  7.94464e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   80.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.201354     ( -2.61959   1.72996 )
Epeak [keV] : 29.1195      ( -29.1095 7.81556 )
Norm@50keV  : 1.148824E-02    ( -1.148824E-02   0.667245 )
------------------------------------------------------------
 Chi-Squared =      41.44704     using    59 PHA bins.
 Reduced chi-squared =     0.7401258     for     56 degrees of freedom
 Null hypothesis probability = 0.927
 
Photon flux (15-150 keV)    in 80.00 sec: 8.297813E-02 ( -0.0135691  0.013707 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.17736e-07 ( -6.42776e-08  8.0196e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   80.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.34556   ( -1.09472   3.54106 )
beta        : -9.30306    ( -0.791290   19.2087 )
Epeak [keV] : 23.7324      ( -11.1728 8.02285 )
Norm@50keV   : 2.076526E-03    ( -3.124803E-03   2.72460 )
------------------------------------------------------------
 Chi-Squared =      42.48568     using    59 PHA bins.
 Reduced chi-squared =     0.7724668     for     55 degrees of freedom
 Null hypothesis probability = 0.891
 
Photon flux (15-150 keV)    in 80.00 sec: 8.109793E-02 ( -0.0126466  0.0217241 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.13161e-07 ( -5.93264e-08  9.73904e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   80.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.32037     ( -0.302389   0.340463 )
Norm@50keV  : 4.877083E-04    ( -1.222869E-04   1.214680E-04) )
------------------------------------------------------------
 Chi-Squared =      46.20377     using    59 PHA bins.
 Reduced chi-squared =     0.8105924     for     57 degrees of freedom
 Null hypothesis probability = 0.846
 
Photon flux (15-150 keV)    in 80.00 sec: 8.620641E-02 ( -0.0137732  0.0137826 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.74326e-07 ( -7.5372e-08  7.94464e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   80.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.201354     ( -2.61959   1.72996 )
Epeak [keV] : 29.1195      ( -29.1095 7.81556 )
Norm@50keV  : 1.148824E-02    ( -1.148824E-02   0.667245 )
------------------------------------------------------------
 Chi-Squared =      41.44704     using    59 PHA bins.
 Reduced chi-squared =     0.7401258     for     56 degrees of freedom
 Null hypothesis probability = 0.927
 
Photon flux (15-150 keV)    in 80.00 sec: 8.297813E-02 ( -0.0135691  0.013707 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.17736e-07 ( -6.42776e-08  8.0196e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   80.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.34556   ( -1.95090   3.54219 )
beta        : -9.30306    ( -6.12711   13.8729 )
Epeak [keV] : 23.7324      ( -28.3100 8.84833 )
Norm@50keV   : 2.076526E-03    ( -5.457319E-03   2.79077 )
------------------------------------------------------------
 Chi-Squared =      42.48568     using    59 PHA bins.
 Reduced chi-squared =     0.7724668     for     55 degrees of freedom
 Null hypothesis probability = 0.891
 
Photon flux (15-150 keV)    in 80.00 sec: 8.109793E-02 ( -0.0126466  0.0217241 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.13161e-07 ( -5.93264e-08  9.73904e-08 ) ergs/cm2
 
Plot creation:
Mon Dec 31 12:59:50 EST 2007