batgrbproduct Analysis for Trigger=709357

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Aug 22 16:33:49 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger709357/GCN5_download_cron
======================================================================

  Trigger: 00709357      Segment: 000

  BAT Trigger Time: 493511370.048   [s; MET]
      Trigger Stop: 493511370.112   [s; MET]
               UTC: 2016-08-21T22:29:13.303140    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 279.987123430967   Dec: 62.3929503514047  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.14
     Image Trigger?:     NO
     Rate S/N Ratio:     34.6121365997536  [ if not an image trigger ]
     Image S/N Ratio:    10.14

  Flight Position:   [ source = BAT ]
    RA: 279.987123430967   Dec: 62.3929503514047  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 280.005357801052   Dec: 62.387008317718  [deg; J2000]  
        { 18h 40m 01.3s , +62d 23' 13.2" }
         +/- 1.43795830804115 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.782720121526222 [arcmin] (formal 1-sigma fit error)
    SNR: 18.1036660964929
 
  Angular difference between Flight and Ground position is 0.619840 arcmin
 
  Partial Coding Fraction: 0.859375    [ including projection effects ]

  Duration
     T90: 0.479999959468842 +/- 0.0729931709021742
        Measured from: 0.00800013542175293
                   to: 0.488000094890594     [s; relative to TRIGTIME]
     T50: 0.275999963283539 +/- 0.0505964885533881
        Measured from: 0.0440001487731934
                   to: 0.320000112056732     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.229999959468842     
                   to: 0.770000040531158     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.53600001335144     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.065441   0.095283   0.043728  -0.000834
           0.006126   0.006906   0.005458   0.003961 [error]
 Peak      0.060014   0.091690   0.047443   0.007463
           0.007576   0.008266   0.006757   0.005071 [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 2.28e-08 3.33e-08 3.63e-08 7.41e-08 1.15e-07 1.66e-07   erg/cm2
              Error 2.83e-09 2.97e-09 5.01e-09 1.98e-08 1.20e-08 2.54e-08   erg/cm2
Peak flux Power-law 6.93e-01 5.94e-01 3.48e-01 3.05e-01 1.77e+00 1.94e+00   ph/cm2/s
              Error 1.10e-01 6.42e-02 5.38e-02 8.94e-02 1.91e-01 2.11e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.91e-08 4.09e-08 3.54e-08 9.17e-09 1.03e-07 1.05e-07   erg/cm2
              Error 3.38e-09 4.46e-09 6.32e-09 8.55e-09 1.19e-08 1.42e-08   erg/cm2
Peak flux Cutoff-PL 5.64e-01 7.02e-01 3.64e-01 6.62e-02 1.69e+00 1.70e+00   ph/cm2/s
              Error 1.33e-01 8.97e-02 6.61e-02 6.21e-02 1.96e-01 2.04e-01   ph/cm2/s
 
Fluence        Band 1.89e-08 4.09e-08 3.50e-08 1.47e-08 1.04e-07 1.10e-07   erg/cm2
              Error -------- -------- -------- 1.61e-08 -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.876    0.149    -      -           2.34e-02 2.43e-03   75.270 57
CPL   0.110    0.881      46.3    6.4      2.29e-01 3.90e-01   58.760 56
 
The chi2 of BB fit is 65.67 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.772    0.179    -      -           1.30e-02 1.57e-03   66.330 57
CPL   0.174    1.021      51.3   10.8      9.69e-02 1.96e-01   56.350 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: 0.064000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.536    0.000    0.536
T90     0.480    0.008    0.488
T50     0.276    0.044    0.320
Peak    1.000   -0.230    0.770

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  280.0054 +62.3870 0.0106   22.6   28.8       0.2133    18.1  TRIG_00709357       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.536 (delta_t =   0.536 [sec])
Background time interval of the image:
-239.048 -109.818 (delta_t = 129.230 [sec])
-109.048   0.000 (delta_t = 109.048 [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    0.000 sec. to    0.536 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87585     ( -0.145689   0.151592 )
Norm@50keV  : 2.33610E-02    ( -0.00244436   0.00241203 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.27 using 59 PHA bins.
# Reduced chi-squared =          1.321 for     57 degrees of freedom 
# Null hypothesis probability =   5.289719e-02
 
Photon flux (15-150 keV)    in 0.536 sec: 3.31871 ( -0.29706  0.297132 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.15109e-07 ( -1.18994e-08  1.20438e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.536 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.109521     ( -0.954506   0.807026 )
Epeak [keV] : 46.3337      ( -5.36584 7.45904 )
Norm@50keV  : 0.229370    ( -0.229375   0.551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.76 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     56 degrees of freedom 
# Null hypothesis probability =   3.746488e-01
 
Photon flux (15-150 keV)    in 0.536 sec: 3.17393 ( -0.3022  0.30314 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.02913e-07 ( -1.15615e-08  1.22964e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.536 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.340126   ( -0.988883   1.35321 )
beta        : -4.43944    ( 4.05173   13.6274 )
Epeak [keV] : 51.5486      ( -5.72436 6.68545 )
Norm@50keV   : 0.150022    ( -0.0911792   0.654428 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.30 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     55 degrees of freedom 
# Null hypothesis probability =   2.899569e-01
 
Photon flux (15-150 keV)    in 0.536 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03785e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.4139  (-0.960381  1.04621)
R^2/D10^2   : 1.02409  (-0.29023   0.401105)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.67 using 59 PHA bins.
# Reduced chi-squared =          1.152 for     57 degrees of freedom 
# Null hypothesis probability =   2.016263e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.504e-08   2.409e-09
25- 50  4.455e-08   4.612e-09
50-150  3.370e-08   7.239e-09
15-150  9.329e-08   1.008e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 79.2583       (-18.1918      27.852)
Norm        : 15.9617       (-1.95311     2.23263)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.16 using 59 PHA bins.
# Reduced chi-squared =          1.143 for     57 degrees of freedom 
# Null hypothesis probability =   2.140811e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.219e-08   2.559e-09
25- 50  3.644e-08   3.251e-09
50-150  5.112e-08   1.930e-08
15-150  1.097e-07   1.718e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.04871        (-1.75461      2.55974)
R1^2/D10^2  : 18.1377        (-15.5226      365.425)
kT2 [keV]   : 13.2236        (-1.61316      2.45115)
R2^2/D10^2  : 0.521607    (-0.289628   0.384209)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.65 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     55 degrees of freedom 
# Null hypothesis probability =   4.132429e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.974e-08   8.432e-09
25- 50  3.986e-08   1.197e-08
50-150  4.063e-08   1.483e-08
15-150  1.002e-07   3.470e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.230 sec. to    0.770 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.77210     ( -0.175061   0.182215 )
Norm@50keV  : 1.29668E-02    ( -0.0015786   0.00155629 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.33 using 59 PHA bins.
# Reduced chi-squared =          1.164 for     57 degrees of freedom 
# Null hypothesis probability =   1.861270e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.76783 ( -0.190849  0.190931 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.19514e-07 ( -1.48119e-08  1.50205e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.230 sec. to    0.770 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.174169     ( -1.12489   0.916414 )
Epeak [keV] : 51.3282      ( -7.54418 13.9958 )
Norm@50keV  : 9.69256E-02    ( -0.0969279   0.294934 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.35 using 59 PHA bins.
# Reduced chi-squared =          1.006 for     56 degrees of freedom 
# Null hypothesis probability =   4.617358e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.68552 ( -0.19628  0.19646 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.07496e-07 ( -1.47673e-08  1.578e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.230 sec. to    0.770 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.174461   ( -0.707305   0.713542 )
beta        : -10.00000    ( 10   8.06369e-06 )
Epeak [keV] : 51.3188      ( -7.48936 13.9943 )
Norm@50keV   : 9.69047E-02    ( -0.0101885   0.295406 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.35 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     55 degrees of freedom 
# Null hypothesis probability =   4.241688e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.08076e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.2700  (-1.27079  1.42608)
R^2/D10^2   : 0.419249  (-0.141091   0.20886)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.65 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     57 degrees of freedom 
# Null hypothesis probability =   3.134069e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.337e-08   2.510e-09
25- 50  4.318e-08   6.005e-09
50-150  3.966e-08   9.535e-09
15-150  9.622e-08   1.324e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 98.3222       (-29.0421      53.9169)
Norm        : 7.98034       (-1.08439     1.27195)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.57 using 59 PHA bins.
# Reduced chi-squared =          1.063 for     57 degrees of freedom 
# Null hypothesis probability =   3.483635e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.086e-08   3.315e-09
25- 50  3.594e-08   4.425e-09
50-150  5.768e-08   2.473e-08
15-150  1.145e-07   2.736e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.01681        (-4.00192      3.17898)
R1^2/D10^2  : 9.95694        (-8.96527      58.8764)
kT2 [keV]   : 14.2260        (-2.03574      3.19718)
R2^2/D10^2  : 0.217786    (-0.132141   0.173728)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.52 using 59 PHA bins.
# Reduced chi-squared =         0.9914 for     55 degrees of freedom 
# Null hypothesis probability =   4.927451e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.854e-08   7.922e-09
25- 50  3.850e-08   1.372e-08
50-150  4.722e-08   1.888e-08
15-150  1.043e-07   3.731e-08
Plot creation:
Mon Aug 22 16:38:20 EDT 2016