batgrbproduct Analysis for Trigger=683076

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Apr 18 10:42:46 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger683076/GCN5_download_cron
======================================================================

  Trigger: 00683076      Segment: 000

  BAT Trigger Time: 482559837.184   [s; MET]
      Trigger Stop: 482559841.28   [s; MET]
               UTC: 2016-04-17T04:23:41.047080    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 120.239601231894   Dec: 7.67083182618275  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.19
     Image Trigger?:     NO
     Rate S/N Ratio:     12.2065556157337  [ if not an image trigger ]
     Image S/N Ratio:    7.19

  Flight Position:   [ source = BAT ]
    RA: 120.239601231894   Dec: 7.67083182618275  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 120.260472029128   Dec: 7.64722633561789  [deg; J2000]  
        { 08h 01m 02.5s , +07d 38' 50.0" }
         +/- 1.868496992549 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.933467922792542 [arcmin] (formal 1-sigma fit error)
    SNR: 12.4529455667425
 
  Angular difference between Flight and Ground position is 1.883151 arcmin
 
  Partial Coding Fraction: 0.4140625    [ including projection effects ]

  Duration
     T90: 17.3120000362396 +/- 3.1613668309559
        Measured from: -1.03999990224838
                   to: 16.2720001339912     [s; relative to TRIGTIME]
     T50: 8.91200000047684 +/- 2.02651226721984
        Measured from: 2.24000012874603
                   to: 11.1520001292229     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.50799995660782     
                   to: 2.50799995660782     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.11199998855591     
                   to: 17.8719999790192     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.426921   0.407293   0.263715   0.061487
           0.043844   0.045384   0.039624   0.035013 [error]
 Peak      0.017753   0.051066   0.023865   0.016596
           0.010337   0.010754   0.009476   0.008365 [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 2.02e-07 2.03e-07 3.69e-07 6.73e-07 9.23e-07   erg/cm2
              Error 2.62e-08 2.31e-08 4.03e-08 1.50e-07 9.06e-08 1.90e-07   erg/cm2
Peak flux Power-law 3.17e-01 3.19e-01 2.25e-01 2.53e-01 9.62e-01 1.11e+00   ph/cm2/s
              Error 1.57e-01 9.83e-02 7.74e-02 1.83e-01 2.79e-01 3.11e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.49e-07 2.02e-07 2.03e-07 3.65e-07 6.72e-07 9.19e-07   erg/cm2
              Error 2.02e-08 2.31e-08 3.97e-08 6.76e-08 8.92e-08 2.10e-07   erg/cm2
Peak flux Cutoff-PL 2.63e-01 3.46e-01 2.41e-01 9.72e-02 9.16e-01 9.54e-01   ph/cm2/s
              Error 2.39e-01 1.53e-01 9.32e-02 2.31e-01 3.75e-01 4.32e-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    1.994    0.232    -      -           3.65e-03 5.17e-04   60.480 57
CPL   2.378    0.456     145.6    0.0      2.33e-03 0.00e+00   59.660 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.501    0.502    -      -           7.70e-03 2.17e-03   53.930 57
CPL   0.532    3.122      75.3   -3.8      2.36e-02 3.76e+03   53.730 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: 3.712000 sec.
T50 in the 50-300 keV band: 2.368000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   19.984   -2.112   17.872
T90    17.312   -1.040   16.272
T50     8.912    2.240   11.152
Peak    1.000    1.508    2.508

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  120.2605  +7.6472 0.0154   45.2 -170.0       1.1469    12.5  TRIG_00683076       
------------------------------------------
 
Foreground time interval of the image:
 -2.112  17.872 (delta_t =  19.984 [sec])
Background time interval of the image:
-71.883  -2.112 (delta_t =  69.771 [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   -2.112 sec. to   17.872 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99426     ( -0.224566   0.239591 )
Norm@50keV  : 3.65360E-03    ( -0.000526918   0.000507412 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.48 using 59 PHA bins.
# Reduced chi-squared =          1.061 for     57 degrees of freedom 
# Null hypothesis probability =   3.514836e-01
 
Photon flux (15-150 keV)    in 19.98 sec: 0.546597 ( -0.0633568  0.0634867 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.7294e-07 ( -8.98952e-08  9.1319e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.112 sec. to   17.872 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.37828     ( -0.731646   0.180365 )
Epeak [keV] : 145.635      (   )
Norm@50keV  : 2.33069E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.66 using 59 PHA bins.
# Reduced chi-squared =          1.065 for     56 degrees of freedom 
# Null hypothesis probability =   3.442661e-01
 
Photon flux (15-150 keV)    in 19.98 sec: 0.547967 ( -0.065096  0.062439 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.72493e-07 ( -8.94585e-08  8.90369e-08 ) ergs/cm2
 
Band function
Time interval is from   -2.112 sec. to   17.872 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.56157   ( 1.56259   1.56259 )
beta        : -1.99415    ( 1.9942   0.22437 )
Epeak [keV] : 12.9559      ( -12.6198 -12.6198 )
Norm@50keV   : 1.01582E-02    ( -0.0102279   13.0601 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.48 using 59 PHA bins.
# Reduced chi-squared =          1.100 for     55 degrees of freedom 
# Null hypothesis probability =   2.847407e-01
 
Photon flux (15-150 keV)    in 19.98 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]    : 10.2815  (-1.79153  2.1736)
R^2/D10^2   : 0.214890  (-0.109457   0.23283)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          93.98 using 59 PHA bins.
# Reduced chi-squared =          1.649 for     57 degrees of freedom 
# Null hypothesis probability =   1.481250e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.326e-08   2.245e-08
25- 50  2.410e-07   4.016e-08
50-150  1.362e-07   4.437e-08
15-150  4.705e-07   7.862e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 78.0328       (-26.1819      50.6318)
Norm        : 2.53042       (-0.45056     0.59161)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.00 using 59 PHA bins.
# Reduced chi-squared =          1.140 for     57 degrees of freedom 
# Null hypothesis probability =   2.181421e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.310e-07   1.969e-08
25- 50  2.143e-07   2.908e-08
50-150  2.974e-07   1.291e-07
15-150  6.427e-07   1.175e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.82074        (-1.24844      1.61078)
R1^2/D10^2  : 3.39824        (-2.34329      10.0347)
kT2 [keV]   : 22.0612        (-5.85052      12.5002)
R2^2/D10^2  : 9.73757E-03    (-0.00765855   0.0127948)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.99 using 59 PHA bins.
# Reduced chi-squared =          1.109 for     55 degrees of freedom 
# Null hypothesis probability =   2.694218e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.599e-07   7.104e-08
25- 50  1.776e-07   7.588e-08
50-150  3.400e-07   1.846e-07
15-150  6.774e-07   2.382e-07

Peak spectrum fit

Power-law model
Time interval is from    1.508 sec. to    2.508 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50099     ( -0.496129   0.507433 )
Norm@50keV  : 7.70019E-03    ( -0.00217915   0.00215852 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.93 using 59 PHA bins.
# Reduced chi-squared =         0.9462 for     57 degrees of freedom 
# Null hypothesis probability =   5.908335e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.961542 ( -0.277402  0.27966 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.30361e-08 ( -2.1941e-08  2.23206e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.508 sec. to    2.508 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.532458     ( -0.509932   5.73491 )
Epeak [keV] : 75.3375      ( -66.6566 -74.1842 )
Norm@50keV  : 2.36293E-02    ( -0.0252732   7514.04 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.73 using 59 PHA bins.
# Reduced chi-squared =         0.9594 for     56 degrees of freedom 
# Null hypothesis probability =   5.614111e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.916322 ( -0.437422  0.313278 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.76257e-08 ( -3.35482e-08  2.68814e-08 ) ergs/cm2
 
Band function
Time interval is from    1.508 sec. to    2.508 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.83711   ( -4.83711   -4.83711 )
beta        : -2.60619    ( 2.60619   1.14572 )
Epeak [keV] : 47.2315      ( -47.2315 11.8897 )
Norm@50keV   : 15.7211    ( -4.29022   5.85208e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.78 using 59 PHA bins.
# Reduced chi-squared =         0.9596 for     55 degrees of freedom 
# Null hypothesis probability =   5.600961e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.53962e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.1818  (-3.29707  5.10623)
R^2/D10^2   : 0.138174  (-0.0935062   0.220701)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.83 using 59 PHA bins.
# Reduced chi-squared =         0.9443 for     57 degrees of freedom 
# Null hypothesis probability =   5.949006e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.863e-09   3.770e-09
25- 50  2.208e-08   1.249e-08
50-150  2.944e-08   1.882e-08
15-150  5.739e-08   3.335e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.359       (-199.363      -199.363)
Norm        : 3.95636       (-1.09592     1.40478)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.86 using 59 PHA bins.
# Reduced chi-squared =         0.9449 for     57 degrees of freedom 
# Null hypothesis probability =   5.936376e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.852e-09   6.085e-09
25- 50  1.895e-08   1.143e-08
50-150  4.156e-08   2.545e-08
15-150  7.037e-08   4.192e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.46542        (-1.55406      2.08147)
R1^2/D10^2  : 1.05776E+04        (-5413.55      -5418.46)
kT2 [keV]   : 15.2148        (-3.75078      6.29573)
R2^2/D10^2  : 0.102739    (-0.0517676   0.112333)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.59 using 59 PHA bins.
#Fit statistic : Chi-Squared =          50.56 using 59 PHA bins.
# Reduced chi-squared =         0.9198 for     55 degrees of freedom 
# Reduced chi-squared =         0.9192 for     55 degrees of freedom 
# Null hypothesis probability =   6.436144e-01
# Null hypothesis probability =   6.448604e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.587e-09   4.114e-09
25- 50  2.002e-08   1.206e-08
50-150  3.149e-08   2.038e-08
15-150  6.110e-08   3.451e-08
Plot creation:
Mon Apr 18 10:51:19 EDT 2016