batgrbproduct Analysis for Trigger=683906

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Apr 25 15:14:26 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger683906/GCN5_download_cron
======================================================================

  Trigger: 00683906      Segment: 000

  BAT Trigger Time: 483191363.52   [s; MET]
      Trigger Stop: 483191364.544   [s; MET]
               UTC: 2016-04-24T11:49:07.348300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 319.480565124725   Dec: -60.4052836164155  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.78
     Image Trigger?:     NO
     Rate S/N Ratio:     43.5086198356142  [ if not an image trigger ]
     Image S/N Ratio:    15.78

  Flight Position:   [ source = BAT ]
    RA: 319.480565124725   Dec: -60.4052836164155  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 319.483474799868   Dec: -60.4083444914862  [deg; J2000]  
        { 21h 17m 56.0s , -60d 24' 30.0" }
         +/- 1.12682650277629 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.410450570727524 [arcmin] (formal 1-sigma fit error)
    SNR: 25.6470179492117
 
  Angular difference between Flight and Ground position is 0.202882 arcmin
 
  Partial Coding Fraction: 0.3359375    [ including projection effects ]

  Duration
     T90: 6.31999999284744 +/- 0.868469890065956
        Measured from: -0.863999843597412
                   to: 5.45600014925003     [s; relative to TRIGTIME]
     T50: 1.93600004911423 +/- 0.354175061749463
        Measured from: 0.0960001349449158
                   to: 2.03200018405914     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0680000185966492     
                   to: 1.06800001859665     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.42399996519089     
                   to: 6.6240000128746     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.389296   0.681674   0.566312   0.182587
           0.034185   0.037268   0.034043   0.027615 [error]
 Peak      0.115505   0.204336   0.233097   0.083535
           0.013431   0.015517   0.015915   0.012436 [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 1.49e-07 2.91e-07 4.41e-07 1.45e-06 1.24e-06 2.33e-06   erg/cm2
              Error 1.68e-08 1.98e-08 3.21e-08 2.32e-07 8.01e-08 2.52e-07   erg/cm2
Peak flux Power-law 1.27e+00 1.59e+00 1.46e+00 2.33e+00 5.11e+00 6.64e+00   ph/cm2/s
              Error 1.93e-01 1.48e-01 1.21e-01 4.12e-01 4.01e-01 5.25e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.42e-07 2.98e-07 4.52e-07 1.03e-06 1.22e-06 1.93e-06   erg/cm2
              Error 2.01e-08 2.27e-08 3.71e-08 4.48e-07 8.44e-08 4.42e-07   erg/cm2
Peak flux Cutoff-PL 1.22e+00 1.61e+00 1.49e+00 2.00e+00 5.08e+00 6.31e+00   ph/cm2/s
              Error 1.82e-01 1.54e-01 1.50e-01 7.38e-01 4.07e-01 8.36e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   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    1.402    0.105    -      -           1.59e-02 9.61e-04   47.880 57
CPL   1.153    0.368     184.1  -49.7      2.09e-02 8.97e-03   46.760 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.128    0.130    -      -           4.39e-02 3.31e-03   54.860 57
CPL   0.976    0.378     393.5    0.0      5.13e-02 2.31e-02   54.580 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: 3.136000 sec.
T50 in the 50-300 keV band: 1.088000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    8.048   -1.424    6.624
T90     6.320   -0.864    5.456
T50     1.936    0.096    2.032
Peak    1.000    0.068    1.068

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  319.4835 -60.4083 0.0075   44.4  172.7       1.8418    25.6  TRIG_00683906       
------------------------------------------
 
Foreground time interval of the image:
 -1.424   6.624 (delta_t =   8.048 [sec])
Background time interval of the image:
-239.520 -129.070 (delta_t = 110.450 [sec])
-123.520  -1.424 (delta_t = 122.096 [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   -1.424 sec. to    6.624 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40203     ( -0.104656   0.104483 )
Norm@50keV  : 1.59262E-02    ( -0.000960853   0.000960684 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.88 using 59 PHA bins.
# Reduced chi-squared =         0.8400 for     57 degrees of freedom 
# Null hypothesis probability =   7.997971e-01
 
Photon flux (15-150 keV)    in 8.048 sec: 1.94041 ( -0.123981  0.12426 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.23799e-06 ( -8.00306e-08  8.02353e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.424 sec. to    6.624 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.15288     ( -0.435851   0.299543 )
Epeak [keV] : 184.105      ( -84.7922 -184.104 )
Norm@50keV  : 2.09144E-02    ( -0.00563625   0.0123055 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.76 using 59 PHA bins.
# Reduced chi-squared =         0.8351 for     56 degrees of freedom 
# Null hypothesis probability =   8.056241e-01
 
Photon flux (15-150 keV)    in 8.048 sec: 1.91908 ( -0.06448  0.12857 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22352e-06 ( -8.47454e-08  8.41257e-08 ) ergs/cm2
 
Band function
Time interval is from   -1.424 sec. to    6.624 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.165515   ( 0.485491   0.485491 )
beta        : -1.51678    ( 1.51132   0.161126 )
Epeak [keV] : 52.5343      ( -52.4162 219.967 )
Norm@50keV   : 9.06948E-02    ( -0.0931703   665.541 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.42 using 59 PHA bins.
# Reduced chi-squared =         0.8257 for     55 degrees of freedom 
# Null hypothesis probability =   8.181843e-01
 
Photon flux (15-150 keV)    in 8.048 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]    : 17.0309  (-1.31441  1.45091)
R^2/D10^2   : 0.145071  (-0.0359298   0.0469261)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         106.24 using 59 PHA bins.
# Reduced chi-squared =         1.8638 for     57 degrees of freedom 
# Null hypothesis probability =   8.273375e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.893e-08   8.362e-09
25- 50  3.054e-07   2.736e-08
50-150  6.329e-07   6.841e-08
15-150  1.007e-06   7.444e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-19.419      -200)
Norm        : 8.09883       (-0.490202     0.490202)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.86 using 59 PHA bins.
# Reduced chi-squared =         0.9449 for     57 degrees of freedom 
# Null hypothesis probability =   5.936144e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.623e-07   1.123e-08
25- 50  3.122e-07   2.189e-08
50-150  6.847e-07   1.517e-07
15-150  1.159e-06   1.594e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.53417        (-1.68345      1.92341)
R1^2/D10^2  : 1.01565        (-0.4614      1.01962)
kT2 [keV]   : 33.0187        (-7.25866      16.435)
R2^2/D10^2  : 1.17227E-02    (-0.00835594   0.0165061)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.71 using 59 PHA bins.
# Reduced chi-squared =         0.8493 for     55 degrees of freedom 
# Null hypothesis probability =   7.791952e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.276e-07   2.797e-08
25- 50  3.165e-07   6.084e-08
50-150  7.858e-07   2.906e-07
15-150  1.230e-06   3.705e-07

Peak spectrum fit

Power-law model
Time interval is from    0.068 sec. to    1.068 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.12808     ( -0.131158   0.12978 )
Norm@50keV  : 4.39121E-02    ( -0.00331856   0.00331119 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.86 using 59 PHA bins.
# Reduced chi-squared =         0.9624 for     57 degrees of freedom 
# Null hypothesis probability =   5.559448e-01
 
Photon flux (15-150 keV)    in 1 sec: 5.10826 ( -0.400286  0.401058 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.55081e-07 ( -3.68406e-08  3.69298e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.068 sec. to    1.068 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.976276     ( -0.539938   0.216266 )
Epeak [keV] : 393.471      ( -393.471 -393.471 )
Norm@50keV  : 5.12944E-02    ( -0.0102133   0.0360229 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.58 using 59 PHA bins.
# Reduced chi-squared =         0.9747 for     56 degrees of freedom 
# Null hypothesis probability =   5.285701e-01
 
Photon flux (15-150 keV)    in 1 sec: 5.07989 ( -0.40992  0.40501 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.5328e-07 ( -3.7832e-08  3.7627e-08 ) ergs/cm2
 
Band function
Time interval is from    0.068 sec. to    1.068 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.951087   ( 0.721691   0.721691 )
beta        : -1.26532    ( 1.29901   11.2785 )
Epeak [keV] : 332.442      ( -331.856 -331.856 )
Norm@50keV   : 5.28853E-02    ( -0.0118109   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.57 using 59 PHA bins.
# Reduced chi-squared =         0.9922 for     55 degrees of freedom 
# Null hypothesis probability =   4.910465e-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]    : 21.2474  (-2.04947  2.35094)
R^2/D10^2   : 0.199529  (-0.0574551   0.0778179)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.53 using 59 PHA bins.
# Reduced chi-squared =          1.553 for     57 degrees of freedom 
# Null hypothesis probability =   4.710043e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.693e-08   2.495e-09
25- 50  8.767e-08   1.040e-08
50-150  2.952e-07   3.755e-08
15-150  3.999e-07   3.850e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-13.8677      -200)
Norm        : 21.2461       (-1.64384     1.64384)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.10 using 59 PHA bins.
# Reduced chi-squared =          1.493 for     57 degrees of freedom 
# Null hypothesis probability =   9.323384e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.292e-08   4.965e-09
25- 50  1.018e-07   1.531e-08
50-150  2.233e-07   6.750e-08
15-150  3.780e-07   9.310e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.17891        (-1.97371      2.89506)
R1^2/D10^2  : 3.61665        (-2.35578      7.95035)
kT2 [keV]   : 31.2444        (-5.60861      11.8079)
R2^2/D10^2  : 5.03204E-02    (-0.032307   0.0421362)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.10 using 59 PHA bins.
# Reduced chi-squared =          1.002 for     55 degrees of freedom 
# Null hypothesis probability =   4.707683e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.821e-08   1.654e-08
25- 50  9.113e-08   2.940e-08
50-150  3.265e-07   1.017e-07
15-150  4.559e-07   1.260e-07
Plot creation:
Mon Apr 25 15:20:59 EDT 2016