batgrbproduct Analysis for Trigger=147478

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Jan  7 18:12:27 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger147478/SDC
======================================================================

  Trigger: 00147478      Segment: 000

  BAT Trigger Time: 143901249   [s; MET]
      Trigger Stop: 143901249.064   [s; MET]
               UTC: 2005-07-24T12:34:09.361840    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 246.214226784009   Dec: -27.5239717279159  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.77
     Image Trigger?:     NO
     Rate S/N Ratio:     32.832910318764  [ if not an image trigger ]
     Image S/N Ratio:    10.77

  Flight Position:   [ source = BAT ]
    RA: 246.214226784009   Dec: -27.5239717279159  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 246.186555580209   Dec: -27.526782977156  [deg; J2000]  
        { 16h 24m 44.8s , -27d 31' 36.4" }
         +/- 2.1462081634422 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.09591584178138 [arcmin] (formal 1-sigma fit error)
    SNR: 10.2164840710076
    RA  =  16h 24m 44.8s  (246.186556 deg.)
    Dec = -27d 31' 36" (-27.526783 deg.)
 
  Angular difference between Flight and Ground position is 1.481970 arcmin
 
  Partial Coding Fraction: 0.3671875    [ including projection effects ]

  Duration
     T90: 95.9640000164509 +/- 8.12466563776041
        Measured from: 0.0519999861717224
                   to: 96.0160000026226     [s; relative to TRIGTIME]
     T50: 61.727999985218 +/- 10.8440542184343
        Measured from: 1.81600001454353
                   to: 63.5439999997616     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0239999890327454     
                   to: 0.976000010967255     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0239999890327454     
                   to: 102.831999987364     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.675029   0.699374   0.350229   0.129669
           0.071491   0.061006   0.052193   0.046309 [error]
 Peak      0.120807   0.133943   0.100017   0.023702
           0.011608   0.010727   0.009607   0.007361 [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 2.18e-07 3.07e-07 3.21e-07 6.19e-07 1.04e-06 1.46e-06   erg/cm2
              Error 3.84e-08 3.22e-08 5.47e-08 2.25e-07 1.22e-07 2.71e-07   erg/cm2
Peak flux Power-law 1.19e+00 1.09e+00 6.96e-01 6.80e-01 3.26e+00 3.66e+00   ph/cm2/s
              Error 1.90e-01 1.04e-01 8.26e-02 1.69e-01 3.01e-01 3.21e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.17e-07 3.07e-07 3.21e-07 6.14e-07 1.04e-06 1.46e-06   erg/cm2
              Error 3.84e-08 3.22e-08 5.48e-08 2.23e-07 1.22e-07 2.69e-07   erg/cm2
Peak flux Cutoff-PL 1.19e+00 1.09e+00 6.96e-01 6.76e-01 3.26e+00 3.65e+00   ph/cm2/s
              Error 1.90e-01 1.04e-01 8.27e-02 1.68e-01 3.01e-01 3.21e-01   ph/cm2/s
 
Fluence        Band 2.11e-07 3.05e-07 3.24e-07 6.33e-07 1.04e-06 1.51e-06   erg/cm2
              Error 3.17e-08 3.19e-08 3.85e-08 3.26e-07 1.14e-07 0.00e+00   erg/cm2
Peak flux      Band 1.18e+00 1.10e+00 6.99e-01 6.40e-01 3.25e+00 3.61e+00   ph/cm2/s
              Error 1.96e-01 1.12e-01 8.86e-02 2.61e-01 3.11e-01 4.13e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.934    0.216    -      -           1.10e-03 1.32e-04   58.227 57
CPL   1.934    0.217    9991.2    9.7      1.10e-03 1.33e-04   58.228 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.652    0.167    -      -           2.50e-02 2.29e-03   66.052 57
CPL   1.650    0.168    9994.5 5000.0      2.50e-02 2.30e-03   66.052 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: 0.320000 sec.
T50 in the 50-300 keV band: 0.128000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  102.856   -0.024  102.832
T90    95.964    0.052   96.016
T50    61.728    1.816   63.544
Peak    1.000   -0.024    0.976

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  246.1866 -27.5268 0.0188   33.3   45.6       0.6353    10.2  TRIG_00147478       
------------------------------------------
 
Foreground time interval of the image:
  0.016  12.445 (delta_t =  12.429 [sec])
Background time interval of the image:
-183.155   0.016 (delta_t = 183.171 [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    0.016 sec. to  102.872 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93413     ( -0.211933   0.220235 )
Norm@50keV  : 1.098950E-03    ( -1.340928E-04   1.305307E-04) )
------------------------------------------------------------
 Chi-Squared =      58.22683     using    59 PHA bins.
 Reduced chi-squared =      1.021523     for     57 degrees of freedom
 Null hypothesis probability = 0.430
 
Photon flux (15-150 keV)    in 102.9 sec: 0.160046 ( -0.017433  0.017536 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04026e-06 ( -1.21605e-07  1.23182e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.016 sec. to  102.872 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93393     ( -0.212915   0.221284 )
Epeak [keV] : 9991.18      ( -10.6357 8.82227 )
Norm@50keV  : 1.098825E-03    ( -1.342854E-04   1.318221E-04) )
------------------------------------------------------------
 Chi-Squared =      58.22827     using    59 PHA bins.
 Reduced chi-squared =      1.039791     for     56 degrees of freedom
 Null hypothesis probability = 0.393
 
Photon flux (15-150 keV)    in 102.9 sec: 0.159972 ( -0.017425  0.017529 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04011e-06 ( -1.21528e-07  1.23295e-07 ) ergs/cm2
 
Band function
Time interval is from    0.016 sec. to  102.872 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.50253   ( -8.49747   6.50253 )
beta        : -1.93163    ( -0.220055   0.209574 )
Epeak [keV] : 15.6073      ( -15.5073 161.419 )
Norm@50keV   : 2.966224E-03    ( -2.966224E-03   10.5809 )
------------------------------------------------------------
 Chi-Squared =      58.22797     using    59 PHA bins.
 Reduced chi-squared =      1.058690     for     55 degrees of freedom
 Null hypothesis probability = 0.357
 
Photon flux (15-150 keV)    in 102.9 sec: 0.159748 ( -0.016599  0.016698 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04264e-06 ( -1.09174e-07  1.18695e-07 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.016 sec. to    1.016 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65181     ( -0.165721   0.168927 )
Norm@50keV  : 2.495920E-02    ( -2.298841E-03   2.279729E-03) )
------------------------------------------------------------
 Chi-Squared =      66.05230     using    59 PHA bins.
 Reduced chi-squared =      1.158812     for     57 degrees of freedom
 Null hypothesis probability = 0.193
 
Photon flux (15-150 keV)    in 1.000 sec: 3.26102 ( -0.30054  0.30198 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.32093e-07 ( -2.2601e-08  2.2758e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.016 sec. to    1.016 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65000     ( -0.166723   0.169846 )
Epeak [keV] : 9994.50      ( -9994.49 5.50293 )
Norm@50keV  : 2.501241E-02    ( -2.311639E-03   2.291331E-03) )
------------------------------------------------------------
 Chi-Squared =      66.05166     using    59 PHA bins.
 Reduced chi-squared =      1.179494     for     56 degrees of freedom
 Null hypothesis probability = 0.168
 
Photon flux (15-150 keV)    in 1.000 sec: 3.25966 ( -0.30041  0.30186 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.3115e-07 ( -2.3631e-08  2.3868e-08 ) ergs/cm2
 
Band function
Time interval is from    0.016 sec. to    1.016 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.41052   ( -8.58948   6.40999 )
beta        : -1.65181    ( -0.168485   0.165708 )
Epeak [keV] : 24.5994      ( -24.4994 9975.40 )
Norm@50keV   : 4.677083E-02    ( -2.454969E-02   391.509 )
------------------------------------------------------------
 Chi-Squared =      66.05231     using    59 PHA bins.
 Reduced chi-squared =      1.200951     for     55 degrees of freedom
 Null hypothesis probability = 0.146
 
Photon flux (15-150 keV)    in 1.000 sec: 3.25134 ( -0.31207  0.30989 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.31736e-07 ( -2.4315e-08  2.2893e-08 ) ergs/cm2
 
Plot creation:
Mon Jan  7 18:26:47 EST 2008