batgrbproduct Analysis for Trigger=596958

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Apr 24 10:44:11 EDT 2014
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger596958/GCN5_download_cron
======================================================================

  Trigger: 00596958      Segment: 000

  BAT Trigger Time: 419980040   [s; MET]
      Trigger Stop: 419980104   [s; MET]
               UTC: 2014-04-23T21:07:08.075860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 202.927754553838   Dec: 29.2583028285461  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.9
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.9

  Flight Position:   [ source = BAT ]
    RA: 202.927754553838   Dec: 29.2583028285461  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 202.920782401477   Dec: 29.2416425131672  [deg; J2000]  
        { 13h 31m 41.0s , +29d 14' 29.9" }
         +/- 2.46501572635026 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.00690202232681 [arcmin] (formal 1-sigma fit error)
    SNR: 8.38254627330883
 
  Angular difference between Flight and Ground position is 1.064169 arcmin
 
  Partial Coding Fraction: 0.9375    [ including projection effects ]

  Duration
     T90: 287.807999908924 +/- 57.1458757449667
        Measured from: -18.2839998602867
                   to: 269.524000048637     [s; relative to TRIGTIME]
     T50: 161.203999996185 +/- 73.1183431402331
        Measured from: 44.8120000958443
                   to: 206.01600009203     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 37.5320000052452     
                   to: 38.5320000052452     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -29.4319999814034     
                   to: 336.776000022888     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.095479   0.674108   0.217141   0.031486
           0.094748   0.097896   0.087170   0.081871 [error]
 Peak      0.012639   0.013245   0.011189   0.006608
           0.005133   0.005298   0.004761   0.004271 [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 3.00e-07 2.81e-07 1.83e-07 1.84e-07 8.40e-07 9.49e-07   erg/cm2
              Error 4.71e-08 4.83e-08 6.59e-08 1.23e-07 1.53e-07 2.25e-07   erg/cm2
Peak flux Power-law 6.07e-02 8.55e-02 8.93e-02 1.72e-01 2.90e-01 4.07e-01   ph/cm2/s
              Error 5.48e-02 6.45e-02 3.73e-02 2.03e-01 2.03e-01 1.95e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.97e-07 2.98e-07 1.53e-07 3.18e-08 7.80e-07 8.79e-07   erg/cm2
              Error 4.88e-08 5.99e-08 9.08e-08 1.70e-07 1.77e-07 2.84e-07   erg/cm2
Peak flux Cutoff-PL 6.35e-02 8.72e-02 8.87e-02 1.64e-01 2.92e-01 4.04e-01   ph/cm2/s
              Error 6.12e-02 6.46e-02 3.78e-02 2.22e-01 1.16e-01 1.86e-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    2.620    0.333    -      -           2.22e-04 5.88e-05   49.500 57
CPL   1.942    0.000       2.8    0.0      6.29e-04 0.00e+00   48.840 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.937    0.883    -      -           2.52e-03 1.04e-03   33.370 57
CPL   0.959    0.984    9999.4    0.0      2.55e-03 8.04e-03   33.380 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  366.208  -29.432  336.776
T90   287.808  -18.284  269.524
T50   161.204   44.812  206.016
Peak    1.000   37.532   38.532

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  202.9208 +29.2416 0.0230   13.1  126.2       1.0202     8.4  TRIG_00596958       
------------------------------------------
 
Foreground time interval of the image:
-29.432  72.501 (delta_t = 101.933 [sec])
Background time interval of the image:
-239.000 -235.210 (delta_t =   3.790 [sec])
-234.000 -29.432 (delta_t = 204.568 [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
Multiple GTIs in the spectrum
tstart tstop
-29.432000 324.970000
326.000100 336.776000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.61973     ( -0.310567   0.355076 )
Norm@50keV  : 2.22183E-04    ( -5.82704e-05   5.9326e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.50 using 59 PHA bins.
# Reduced chi-squared =         0.8683 for     57 degrees of freedom 
# Null hypothesis probability =   7.495751e-01
 
Photon flux (15-150 keV)    in 365.2 sec: 4.70551E-02 ( -0.00627169  0.00627922 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.40384e-07 ( -1.48559e-07  1.58418e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-29.432000 324.970000
326.000100 336.776000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94187     (     )
Epeak [keV] : 2.79842      (   )
Norm@50keV  : 6.29128E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.84 using 59 PHA bins.
# Reduced chi-squared =         0.8722 for     56 degrees of freedom 
# Null hypothesis probability =   7.400698e-01
 
Photon flux (15-150 keV)    in 365.2 sec: 4.61785E-02 ( -0.0063671  0.0064851 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.79914e-07 ( -1.56331e-07  1.97814e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-29.432000 324.970000
326.000100 336.776000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.85635   ( 1.15   1.15 )
beta        : -4.36010    ( 4.27375   13.8002 )
Epeak [keV] : 6.16621      ( -6.16611 5.09695 )
Norm@50keV   : 7.14463E-04    ( -0.000151735   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.86 using 59 PHA bins.
# Reduced chi-squared =         0.8883 for     55 degrees of freedom 
# Null hypothesis probability =   7.071223e-01
 
Photon flux (15-150 keV)    in 365.2 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]    : 6.27616  (-0.935714  1.08744)
R^2/D10^2   : 0.138535  (-0.0679404   0.13968)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.92 using 59 PHA bins.
# Reduced chi-squared =         0.9810 for     57 degrees of freedom 
# Null hypothesis probability =   5.156814e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.817e-07   6.869e-08
25- 50  3.093e-07   8.363e-08
50-150  3.395e-08   1.859e-08
15-150  6.250e-07   1.433e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 26.2797       (-7.53611      11.5998)
Norm        : 0.423445       (-0.117542     0.184192)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.25 using 59 PHA bins.
# Reduced chi-squared =         0.8640 for     57 degrees of freedom 
# Null hypothesis probability =   7.576931e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.922e-07   5.277e-08
25- 50  3.091e-07   6.115e-08
50-150  1.413e-07   7.277e-08
15-150  7.426e-07   1.528e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.35972        (-2.31625      1.57096)
R1^2/D10^2  : 0.507803        (-0.353718      20.9964)
kT2 [keV]   : 13.0089        (-10.9624      15.7654)
R2^2/D10^2  : 3.79365E-03    (-0.00364737   0.0531472)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.82 using 59 PHA bins.
# Reduced chi-squared =         0.8876 for     55 degrees of freedom 
# Null hypothesis probability =   7.085169e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.019e-07   1.598e-07
25- 50  2.870e-07   1.468e-07
50-150  1.858e-07   1.176e-07
15-150  7.746e-07   3.995e-07

Peak spectrum fit

Power-law model
Time interval is from   37.532 sec. to   38.532 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.936709     ( -0.994064   0.771899 )
Norm@50keV  : 2.52180E-03    ( -0.00110361   0.000981467 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.37 using 59 PHA bins.
# Reduced chi-squared =         0.5854 for     57 degrees of freedom 
# Null hypothesis probability =   9.947637e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.289614 ( -0.289616  0.116327 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.79081e-08 ( -1.15652e-08  1.18435e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   37.532 sec. to   38.532 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.959094     ( -1.21718   0.751063 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 2.54620E-03    ( -0.0010815   0.0150084 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.38 using 59 PHA bins.
# Reduced chi-squared =         0.5960 for     56 degrees of freedom 
# Null hypothesis probability =   9.929678e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.291707 ( -0.117166  0.114267 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.74817e-08 ( -1.1232e-08  5.9307e-09 ) ergs/cm2
 
Band function
Time interval is from   37.532 sec. to   38.532 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.820193   ( 0.820165   0.820165 )
beta        : -0.936647    ( 0.936596   0.993948 )
Epeak [keV] : 34.3099      ( -34.3181 -34.3181 )
Norm@50keV   : 3.87651E-03    ( -0.00230946   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.37 using 59 PHA bins.
# Reduced chi-squared =         0.6067 for     55 degrees of freedom 
# Null hypothesis probability =   9.907018e-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]    : 28.9569  (-29.116  -29.116)
R^2/D10^2   : 4.34315E-03  (-0.00424212   0.0575222)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.17 using 59 PHA bins.
# Reduced chi-squared =         0.6345 for     57 degrees of freedom 
# Null hypothesis probability =   9.858403e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.821e-10   3.798e-10
25- 50  3.538e-09   2.223e-09
50-150  2.123e-08   1.377e-08
15-150  2.535e-08   1.623e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-126.858      -199.363)
Norm        : 1.18713       (-0.475106     0.475121)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.38 using 59 PHA bins.
# Reduced chi-squared =         0.6207 for     57 degrees of freedom 
# Null hypothesis probability =   9.891143e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.956e-09   1.989e-09
25- 50  5.686e-09   3.805e-09
50-150  1.247e-08   8.160e-09
15-150  2.111e-08   1.359e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.07963        (-5.21115      12.2256)
R1^2/D10^2  : 0.190975        (-0.182965      11.0059)
kT2 [keV]   : 97.8978        (-99.7537      -99.7539)
R2^2/D10^2  : 2.36003E-04    (-0.000191621   0.00166099)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.23 using 59 PHA bins.
# Reduced chi-squared =         0.5860 for     55 degrees of freedom 
# Null hypothesis probability =   9.939221e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.411e-09   1.643e-09
25- 50  5.173e-09   3.637e-09
50-150  2.303e-08   1.244e-08
15-150  3.062e-08   2.011e-08
Plot creation:
Thu Apr 24 11:07:16 EDT 2014