batgrbproduct Analysis for Trigger=517234

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Mar  8 12:01:03 EST 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger517234/GCN5_download_cron
======================================================================

  Trigger: 00517234      Segment: 000

  BAT Trigger Time: 352880026.624   [s; MET]
      Trigger Stop: 352880030.72   [s; MET]
               UTC: 2012-03-08T06:13:38.654560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 219.077930337103   Dec: 79.7034623843718  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.74
     Image Trigger?:     NO
     Rate S/N Ratio:     8.30662386291807  [ if not an image trigger ]
     Image S/N Ratio:    8.74

  Flight Position:   [ source = BAT ]
    RA: 219.077930337103   Dec: 79.7034623843718  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 219.127087432373   Dec: 79.6754350772687  [deg; J2000]  
        { 14h 36m 30.5s , +79d 40' 31.6" }
         +/- 1.28542987095289 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.461277313574822 [arcmin] (formal 1-sigma fit error)
    SNR: 21.2488273949302
 
  Angular difference between Flight and Ground position is 1.762550 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 60.567999958992 +/- 17.1355564828552
        Measured from: -19.175999879837
                   to: 41.392000079155     [s; relative to TRIGTIME]
     T50: 22.8559999465942 +/- 3.60629507533631
        Measured from: -6.13199990987778
                   to: 16.7240000367165     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.624000012874603     
                   to: 1.6240000128746     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -24.1520000100136     
                   to: 58.2039999961853     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.659899   0.798476   0.505724   0.095160
           0.044869   0.047188   0.043193   0.041326 [error]
 Peak      0.023275   0.030195   0.019842   0.001433
           0.005007   0.005475   0.005001   0.004647 [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 1.97e-07 3.17e-07 3.87e-07 9.27e-07 1.17e-06 1.83e-06   erg/cm2
              Error 2.13e-08 2.21e-08 4.20e-08 2.07e-07 9.77e-08 2.46e-07   erg/cm2
Peak flux Power-law 2.25e-01 2.00e-01 1.23e-01 1.14e-01 5.96e-01 6.62e-01   ph/cm2/s
              Error 6.93e-02 4.22e-02 4.10e-02 7.46e-02 1.26e-01 1.48e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.82e-07 3.41e-07 3.86e-07 8.28e-07 1.09e-06 0.00e+00   erg/cm2
              Error 2.44e-08 2.89e-08 4.66e-08 6.71e-07 1.12e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 2.17e-01 2.10e-01 1.23e-01 6.49e-02 5.88e-01 6.15e-01   ph/cm2/s
              Error 7.63e-02 5.57e-02 4.51e-02 9.89e-02 1.29e-01 1.71e-01   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.714    0.128    -      -           1.53e-03 1.21e-04   53.810 57
CPL   1.067    0.544      64.7   41.0      3.45e-03 2.63e-03   48.900 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.707    0.391    -      -           4.48e-03 1.14e-03   68.940 57
CPL   1.321    1.541      75.1    0.0      7.46e-03 0.00e+00   68.760 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: 49.408000 sec.
T50 in the 50-300 keV band: 22.848000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   82.356  -24.152   58.204
T90    60.568  -19.176   41.392
T50    22.856   -6.132   16.724
Peak    1.000    0.624    1.624

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  219.1271 +79.6754 0.0090   19.9  -28.6       1.8906    21.2  TRIG_00517234       
------------------------------------------
 
Foreground time interval of the image:
-24.152  33.477 (delta_t =  57.629 [sec])
Background time interval of the image:
-239.624 -200.694 (delta_t =  38.930 [sec])
-199.624 -53.214 (delta_t = 146.410 [sec])
-51.624 -24.152 (delta_t =  27.472 [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  -24.152 sec. to   58.204 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71374     ( -0.126914   0.129743 )
Norm@50keV  : 1.52995E-03    ( -0.000121692   0.000120325 )
------------------------------------------------------------
# Chi-Squared =          53.81 using 59 PHA bins.
# Reduced chi-squared =         0.9441 for     57 degrees of freedom 
# Null hypothesis probability =   5.954152e-01
 
Photon flux (15-150 keV)    in 82.36 sec: 0.204180 ( -0.0142876  0.014293 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.16546e-06 ( -9.70497e-08  9.84531e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -24.152 sec. to   58.204 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06687     ( -0.58072   0.507743 )
Epeak [keV] : 64.6811      ( -13.7145 68.3361 )
Norm@50keV  : 3.45112E-03    ( -0.00159737   0.003658 )
------------------------------------------------------------
# Chi-Squared =          48.90 using 59 PHA bins.
# Reduced chi-squared =         0.8731 for     56 degrees of freedom 
# Null hypothesis probability =   7.383620e-01
 
Photon flux (15-150 keV)    in 82.36 sec: 0.197772 ( -0.015071  0.015074 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09038e-06 ( -1.10659e-07  1.13789e-07 ) ergs/cm2
 
Band function
Time interval is from  -24.152 sec. to   58.204 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06680   ( -0.456459   0.627711 )
beta        : -10.00000    ( 2.21948e+11   2.21948e+11 )
Epeak [keV] : 64.6675      ( -13.7116 68.3307 )
Norm@50keV   : 3.45111E-03    ( -0.00159904   0.00366062 )
------------------------------------------------------------
# Chi-Squared =          48.90 using 59 PHA bins.
# Reduced chi-squared =         0.8890 for     55 degrees of freedom 
# Null hypothesis probability =   7.057134e-01
 
Photon flux (15-150 keV)    in 82.36 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.0062  (-1.033  1.14317)
R^2/D10^2   : 4.89913E-02  (-0.0138633   0.0191261)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          82.98 using 59 PHA bins.
# Reduced chi-squared =          1.456 for     57 degrees of freedom 
# Null hypothesis probability =   1.394846e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.230e-07   1.429e-08
25- 50  3.874e-07   3.393e-08
50-150  3.359e-07   5.843e-08
15-150  8.463e-07   7.643e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 116.284       (-13.6954      65.8452)
Norm        : 0.875765       (-0.0764428     0.0886587)
------------------------------------------------------------
# Chi-Squared =          49.36 using 59 PHA bins.
# Reduced chi-squared =         0.8659 for     57 degrees of freedom 
# Null hypothesis probability =   7.540810e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.881e-07   1.861e-08
25- 50  3.346e-07   2.442e-08
50-150  5.879e-07   8.796e-08
15-150  1.111e-06   1.058e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.37965        (-1.47438      1.5869)
R1^2/D10^2  : 0.305881        (-0.156294      0.459543)
kT2 [keV]   : 20.8724        (-4.15839      7.05226)
R2^2/D10^2  : 4.86299E-03    (-0.00328922   0.00831765)
------------------------------------------------------------
# Chi-Squared =          47.81 using 59 PHA bins.
# Reduced chi-squared =         0.8692 for     55 degrees of freedom 
# Null hypothesis probability =   7.433571e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.811e-07   6.044e-08
25- 50  3.375e-07   1.018e-07
50-150  5.689e-07   2.905e-07
15-150  1.087e-06   3.745e-07

Peak spectrum fit

Power-law model
Time interval is from    0.624 sec. to    1.624 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.70672     ( -0.373645   0.407931 )
Norm@50keV  : 4.47736E-03    ( -0.0011637   0.00111321 )
------------------------------------------------------------
# Chi-Squared =          68.94 using 59 PHA bins.
# Reduced chi-squared =          1.210 for     57 degrees of freedom 
# Null hypothesis probability =   1.334704e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.596046 ( -0.125679  0.125686 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.14338e-08 ( -1.08898e-08  1.14329e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.624 sec. to    1.624 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32108     ( -2.00576   1.0772 )
Epeak [keV] : 75.0901      (   )
Norm@50keV  : 7.46083E-03    (     )
------------------------------------------------------------
# Chi-Squared =          68.76 using 59 PHA bins.
# Reduced chi-squared =          1.228 for     56 degrees of freedom 
# Null hypothesis probability =   1.177561e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.587836 ( -0.129512  0.129257 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.85358e-08 ( -2.10492e-08  4.72205e-08 ) ergs/cm2
 
Band function
Time interval is from    0.624 sec. to    1.624 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.06068   ( -1.79176   -1.79176 )
beta        : -1.95811    ( 1.98306   0.615953 )
Epeak [keV] : 31.9695      ( -30.8332 60.7719 )
Norm@50keV   : 0.373228    ( -0.366958   705.079 )
------------------------------------------------------------
# Chi-Squared =          68.42 using 59 PHA bins.
# Reduced chi-squared =          1.244 for     55 degrees of freedom 
# Null hypothesis probability =   1.055327e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.0983  (-2.79883  3.76947)
R^2/D10^2   : 0.193444  (-0.125431   0.359849)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          73.45 using 59 PHA bins.
# Reduced chi-squared =          1.289 for     57 degrees of freedom 
# Null hypothesis probability =   7.022878e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.987e-09   1.988e-09
25- 50  1.426e-08   6.037e-09
50-150  9.991e-09   5.377e-09
15-150  2.924e-08   1.231e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 115.390       (-49.2787      -100.244)
Norm        : 2.56759       (-0.608025     0.897915)
------------------------------------------------------------
# Chi-Squared =          68.75 using 59 PHA bins.
# Reduced chi-squared =          1.206 for     57 degrees of freedom 
# Null hypothesis probability =   1.369211e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.697e-09   1.773e-09
25- 50  1.190e-08   2.888e-09
50-150  2.082e-08   5.455e-09
15-150  3.942e-08   9.060e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.06139        (-3.47859      4.99085)
R1^2/D10^2  : 1.14344        (-0.979566      36.2924)
kT2 [keV]   : 21.0217        (-9.34742      -21.221)
R2^2/D10^2  : 1.33750E-02    (-0.0133882   0.120633)
------------------------------------------------------------
# Chi-Squared =          68.55 using 59 PHA bins.
# Reduced chi-squared =          1.246 for     55 degrees of freedom 
# Null hypothesis probability =   1.036525e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.780e-09   4.099e-09
25- 50  1.151e-08   5.960e-09
50-150  1.946e-08   1.223e-08
15-150  3.776e-08   2.068e-08
Plot creation:
Thu Mar  8 12:25:58 EST 2012