batgrbproduct Analysis for Trigger=526351

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jul 13 16:32:42 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger526351/GCN5_download_cron
======================================================================

  Trigger: 00526351      Segment: 000

  BAT Trigger Time: 363793356.8   [s; MET]
      Trigger Stop: 363793357.824   [s; MET]
               UTC: 2012-07-12T13:42:27.382260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 169.60548368771   Dec: -20.0607384702281  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.6
     Image Trigger?:     NO
     Rate S/N Ratio:     20.4694894904587  [ if not an image trigger ]
     Image S/N Ratio:    11.6

  Flight Position:   [ source = BAT ]
    RA: 169.60548368771   Dec: -20.0607384702281  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 169.597094841187   Dec: -20.0505787954739  [deg; J2000]  
        { 11h 18m 23.3s , -20d 03' 02.1" }
         +/- 0.888891753824759 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.39394705305619 [arcmin] (formal 1-sigma fit error)
    SNR: 35.9907927232874
 
  Angular difference between Flight and Ground position is 0.771451 arcmin
 
  Partial Coding Fraction: 0.5546875    [ including projection effects ]

  Duration
     T90: 14.8039999604225 +/- 3.2381383787452
        Measured from: -2.44799989461899
                   to: 12.3560000658035     [s; relative to TRIGTIME]
     T50: 6.87999993562698 +/- 0.543087432629671
        Measured from: 0.564000129699707
                   to: 7.44400006532669     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.50800001621246     
                   to: 8.50800001621246     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.57200002670288     
                   to: 16.527999997139     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.591267   1.026855   0.866267   0.198878
           0.037183   0.039723   0.035559   0.028566 [error]
 Peak      0.057700   0.108801   0.108540   0.023090
           0.008820   0.009844   0.009179   0.007113 [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 2.13e-07 4.25e-07 6.60e-07 2.26e-06 1.84e-06 3.55e-06   erg/cm2
              Error 1.75e-08 2.08e-08 3.49e-08 2.64e-07 8.68e-08 2.86e-07   erg/cm2
Peak flux Power-law 5.98e-01 7.44e-01 6.73e-01 1.06e+00 2.38e+00 3.07e+00   ph/cm2/s
              Error 1.08e-01 8.43e-02 7.11e-02 2.28e-01 2.34e-01 3.09e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.97e-07 4.39e-07 6.83e-07 1.35e-06 2.67e-06 0.00e+00   erg/cm2
              Error 2.12e-08 2.38e-08 3.95e-08 5.36e-07 5.35e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 4.78e-01 8.02e-01 7.47e-01 4.33e-01 2.30e+00 2.46e+00   ph/cm2/s
              Error 1.30e-01 9.97e-02 8.93e-02 2.56e-01 2.41e-01 3.45e-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    1.364    0.076    -      -           8.97e-03 3.90e-04   62.470 57
CPL   0.984    0.306     143.2  158.6      1.36e-02 4.55e-03   57.560 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.146    0.155    -      -           2.04e-02 1.95e-03   67.360 57
CPL   0.133    0.742      99.7   55.8      6.13e-02 5.52e-02   60.410 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: 11.520000 sec.
T50 in the 50-300 keV band: 6.464000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   21.100   -4.572   16.528
T90    14.804   -2.448   12.356
T50     6.880    0.564    7.444
Peak    1.000    7.508    8.508

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  169.5971 -20.0506 0.0053   31.3  154.7       2.6253    36.0  TRIG_00526351       
------------------------------------------
 
Foreground time interval of the image:
 -4.572  12.901 (delta_t =  17.473 [sec])
Background time interval of the image:
-239.800 -57.767 (delta_t = 182.033 [sec])
-56.800  -4.572 (delta_t =  52.228 [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   -4.572 sec. to   16.528 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36383     ( -0.0765001   0.0762944 )
Norm@50keV  : 8.96961E-03    ( -0.000389518   0.000389491 )
------------------------------------------------------------
# Chi-Squared =          62.47 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     57 degrees of freedom 
# Null hypothesis probability =   2.880224e-01
 
Photon flux (15-150 keV)    in 21.1 sec: 1.08370 ( -0.0495273  0.0496183 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.8428e-06 ( -8.67071e-08  8.69398e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.572 sec. to   16.528 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.983996     ( -0.316335   0.295723 )
Epeak [keV] : 143.240      ( -42.1204 275.174 )
Norm@50keV  : 1.35921E-02    ( -0.00367098   0.00542493 )
------------------------------------------------------------
# Chi-Squared =          57.56 using 59 PHA bins.
# Reduced chi-squared =          1.028 for     56 degrees of freedom 
# Null hypothesis probability =   4.170652e-01
 
Photon flux (15-150 keV)    in 21.1 sec: 1.06314 ( -0.05187  0.05193 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.66843e-06 ( -4.22274e-07  6.46863e-07 ) ergs/cm2
 
Band function
Time interval is from   -4.572 sec. to   16.528 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.25846   ( -1.35341   -0.39573 )
beta        : -1.49426    ( -0.133711   0.115483 )
Epeak [keV] : 38.7406      ( -8.59801 32.4776 )
Norm@50keV   : 0.471145    ( -0.490441   113.004 )
------------------------------------------------------------
# Chi-Squared =          53.66 using 59 PHA bins.
# Reduced chi-squared =         0.9756 for     55 degrees of freedom 
# Null hypothesis probability =   5.259760e-01
 
Photon flux (15-150 keV)    in 21.1 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]    : 17.3700  (  )
R^2/D10^2   : 7.58122E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         158.83 using 59 PHA bins.
# Reduced chi-squared =         2.7865 for     57 degrees of freedom 
# Null hypothesis probability =   1.510884e-11
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.770e-08   8.989e-09
25- 50  4.397e-07   2.891e-08
50-150  9.535e-07   7.512e-08
15-150  1.491e-06   7.839e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.993       (      )
Norm        : 4.52529       (-4.52529     -4.52529)
------------------------------------------------------------
# Chi-Squared =          76.63 using 59 PHA bins.
# Reduced chi-squared =          1.344 for     57 degrees of freedom 
# Null hypothesis probability =   4.245973e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.378e-07   1.219e-07
25- 50  4.574e-07   2.348e-07
50-150  1.003e-06   5.130e-07
15-150  1.698e-06   8.735e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.78383        (-1.03328      1.16936)
R1^2/D10^2  : 0.705783        (-0.251493      0.422466)
kT2 [keV]   : 29.0324        (-3.72037      5.54014)
R2^2/D10^2  : 1.06542E-02    (-0.00479936   0.00673996)
------------------------------------------------------------
# Chi-Squared =          51.17 using 59 PHA bins.
# Reduced chi-squared =         0.9303 for     55 degrees of freedom 
# Null hypothesis probability =   6.217731e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.900e-07   2.820e-08
25- 50  4.505e-07   6.499e-08
50-150  1.173e-06   1.761e-07
15-150  1.813e-06   2.729e-07

Peak spectrum fit

Power-law model
Time interval is from    7.508 sec. to    8.508 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.14573     ( -0.156346   0.153258 )
Norm@50keV  : 2.04019E-02    ( -0.00195217   0.00195134 )
------------------------------------------------------------
# Chi-Squared =          67.36 using 59 PHA bins.
# Reduced chi-squared =          1.182 for     57 degrees of freedom 
# Null hypothesis probability =   1.638174e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.37807 ( -0.234208  0.234705 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10297e-07 ( -2.16753e-08  2.17879e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    7.508 sec. to    8.508 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.132774     ( -0.805047   0.678815 )
Epeak [keV] : 99.6754      ( -22.9102 88.6772 )
Norm@50keV  : 6.13377E-02    ( -0.0313906   0.079012 )
------------------------------------------------------------
# Chi-Squared =          60.41 using 59 PHA bins.
# Reduced chi-squared =          1.079 for     56 degrees of freedom 
# Null hypothesis probability =   3.195306e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.29860 ( -0.24112  0.24118 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.50195e-07 ( -5.3594e-08  1.0775e-07 ) ergs/cm2
 
Band function
Time interval is from    7.508 sec. to    8.508 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99039   ( -210.643   -200.643 )
beta        : -1.37323    ( -0.216392   0.203595 )
Epeak [keV] : 33.5637      ( -7.67564 6.92126 )
Norm@50keV   : 295.921    ( -295.844   244.289 )
------------------------------------------------------------
# Chi-Squared =          59.49 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     55 degrees of freedom 
# Null hypothesis probability =   3.156578e-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]    : 19.1259  (-2.07698  2.40111)
R^2/D10^2   : 0.133012  (-0.0432478   0.0619824)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          69.05 using 59 PHA bins.
# Reduced chi-squared =          1.211 for     57 degrees of freedom 
# Null hypothesis probability =   1.316136e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.541e-09   2.015e-09
25- 50  4.610e-08   6.170e-09
50-150  1.241e-07   2.196e-08
15-150  1.797e-07   2.300e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.997       (      )
Norm        : 9.87463       (-9.87463     -9.87463)
------------------------------------------------------------
# Chi-Squared =          82.50 using 59 PHA bins.
# Reduced chi-squared =          1.447 for     57 degrees of freedom 
# Null hypothesis probability =   1.524808e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.459e-08   1.305e-08
25- 50  4.730e-08   2.524e-08
50-150  1.037e-07   5.555e-08
15-150  1.756e-07   9.460e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.30248        (-3.0711      6.04923)
R1^2/D10^2  : 0.855329        (-0.599369      2.5894)
kT2 [keV]   : 25.8549        (-5.36672      41.2637)
R2^2/D10^2  : 4.05450E-02    (-0.0387825   0.0565441)
------------------------------------------------------------
# Chi-Squared =          59.37 using 59 PHA bins.
# Reduced chi-squared =          1.079 for     55 degrees of freedom 
# Null hypothesis probability =   3.193689e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.557e-08   8.740e-09
25- 50  4.709e-08   2.501e-08
50-150  1.376e-07   7.395e-08
15-150  2.002e-07   1.022e-07
Plot creation:
Fri Jul 13 16:50:00 EDT 2012