batgrbproduct Analysis for Trigger=706052

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Jul 26 18:21:13 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger706052/batgroup_hand_proc
======================================================================

  Trigger: 00706052      Segment: 000

  BAT Trigger Time: 491189664.288   [s; MET]
      Trigger Stop: 491189664.32   [s; MET]
               UTC: 2016-07-26T01:34:07.673500    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 98.8207862266102   Dec: -6.64457301434871  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.6
     Image Trigger?:     NO
     Rate S/N Ratio:     24.2899156029822  [ if not an image trigger ]
     Image S/N Ratio:    7.6

  Flight Position:   [ source = BAT ]
    RA: 98.8207862266102   Dec: -6.64457301434871  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 98.8093070842852   Dec: -6.61749576541698  [deg; J2000]  
        { 06h 35m 14.2s , -06d 37' 03.0" }
         +/- 1.2977315545875 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.40961721652998 [arcmin] (formal 1-sigma fit error)
    SNR: 20.9616621091504
 
  Angular difference between Flight and Ground position is 1.762807 arcmin
 
  Partial Coding Fraction: 0.5859375    [ including projection effects ]

  Duration
     T90: 0.727999925613403 +/- 0.0357770801763245
        Measured from: 0.0160000324249268
                   to: 0.74399995803833     [s; relative to TRIGTIME]
     T50: 0.179999947547913 +/- 0.18070972196459
        Measured from: 0.495999991893768
                   to: 0.675999939441681     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.107999980449677     
                   to: 0.892000019550323     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.00400000810623169     
                   to: 0.780000030994415     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.079550   0.120020   0.134796   0.042609
           0.008674   0.009993   0.009692   0.006766 [error]
 Peak      0.083172   0.127578   0.138020   0.043373
           0.009542   0.010735   0.010281   0.007242 [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 2.64e-08 5.64e-08 9.46e-08 3.62e-07 2.60e-07 5.39e-07   erg/cm2
              Error 3.88e-09 5.07e-09 9.01e-09 7.51e-08 2.28e-08 8.10e-08   erg/cm2
Peak flux Power-law 9.17e-01 1.04e+00 8.48e-01 1.15e+00 3.23e+00 3.96e+00   ph/cm2/s
              Error 1.40e-01 9.85e-02 8.15e-02 2.28e-01 2.75e-01 3.37e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.44e-08 5.83e-08 9.88e-08 2.29e-07 2.57e-07 4.10e-07   erg/cm2
              Error 4.76e-09 5.77e-09 1.08e-08 1.37e-07 2.36e-08 1.35e-07   erg/cm2
Peak flux Cutoff-PL 8.22e-01 1.08e+00 8.98e-01 7.52e-01 3.17e+00 3.55e+00   ph/cm2/s
              Error 1.75e-01 1.10e-01 1.02e-01 3.56e-01 2.83e-01 4.93e-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    1.255    0.134    -      -           3.35e-02 2.68e-03   55.290 57
CPL   0.891    0.495     170.9  -49.4      4.94e-02 2.80e-02   53.780 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared 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    1.297    0.139    -      -           2.71e-02 2.23e-03   54.560 57
CPL   0.834    0.562     141.0  -45.0      4.43e-02 2.82e-02   52.410 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: 0.704000 sec.
T50 in the 50-300 keV band: 0.128000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.776    0.004    0.780
T90     0.728    0.016    0.744
T50     0.180    0.496    0.676
Peak    1.000   -0.108    0.892

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   98.8093    -6.6175   0.0092    38.0764   -26.0822         0.3834218     20.962 TRIG_00706052                 
 
Foreground time interval of the image:
  0.004   0.780 (delta_t =   0.776 [sec])
Background time interval of the image:
-239.288   0.004 (delta_t = 239.292 [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    0.004 sec. to    0.780 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25542     ( -0.134422   0.134281 )
Norm@50keV  : 3.35436E-02    ( -0.00268125   0.00268112 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.29 using 59 PHA bins.
# Reduced chi-squared =         0.9700 for     57 degrees of freedom 
# Null hypothesis probability =   5.394211e-01
 
Photon flux (15-150 keV)    in 0.776 sec: 3.97082 ( -0.327464  0.327888 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.60135e-07 ( -2.28088e-08  2.28866e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.004 sec. to    0.780 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.890648     ( -0.564855   0.425803 )
Epeak [keV] : 170.932      ( -72.0467 -170.932 )
Norm@50keV  : 4.94234E-02    ( -0.017451   0.0384604 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.78 using 59 PHA bins.
# Reduced chi-squared =         0.9604 for     56 degrees of freedom 
# Null hypothesis probability =   5.591835e-01
 
Photon flux (15-150 keV)    in 0.776 sec: 3.92195 ( -0.33465  0.33469 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.57113e-07 ( -2.36106e-08  2.35151e-08 ) ergs/cm2
 
Band function
Time interval is from    0.004 sec. to    0.780 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.931765   ( -0.330117   0.24281 )
beta        : -9.33326    ( 9.33289   19.3329 )
Epeak [keV] : 186.242      ( -55.3107 -186.237 )
Norm@50keV   : 4.72666E-02    ( -0.00377147   0.0152962 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.80 using 59 PHA bins.
# Reduced chi-squared =         0.9782 for     55 degrees of freedom 
# Null hypothesis probability =   5.204162e-01
 
Photon flux (15-150 keV)    in 0.776 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]    : 19.3689  (-1.93716  2.19199)
R^2/D10^2   : 0.204705  (-0.0613922   0.0858706)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          83.81 using 59 PHA bins.
# Reduced chi-squared =          1.470 for     57 degrees of freedom 
# Null hypothesis probability =   1.192230e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.163e-08   2.014e-09
25- 50  5.670e-08   6.421e-09
50-150  1.569e-07   2.200e-08
15-150  2.252e-07   2.464e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-19.5983      -200)
Norm        : 16.4916       (-1.33901     1.33901)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.36 using 59 PHA bins.
# Reduced chi-squared =          1.199 for     57 degrees of freedom 
# Null hypothesis probability =   1.440902e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.187e-08   3.504e-09
25- 50  6.131e-08   7.977e-09
50-150  1.345e-07   5.062e-08
15-150  2.277e-07   5.191e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.32941        (-1.72289      2.33552)
R1^2/D10^2  : 4.49078        (-2.93414      10.7752)
kT2 [keV]   : 26.8969        (-4.19586      6.84371)
R2^2/D10^2  : 6.00181E-02    (-0.0327951   0.0490655)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.18 using 59 PHA bins.
# Reduced chi-squared =         0.9487 for     55 degrees of freedom 
# Null hypothesis probability =   5.830119e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.557e-08   1.158e-08
25- 50  5.536e-08   1.576e-08
50-150  1.774e-07   4.753e-08
15-150  2.584e-07   6.833e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.108 sec. to    0.892 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29694     ( -0.138474   0.138631 )
Norm@50keV  : 2.70629E-02    ( -0.00223298   0.00223245 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.56 using 59 PHA bins.
# Reduced chi-squared =         0.9572 for     57 degrees of freedom 
# Null hypothesis probability =   5.672454e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.22687 ( -0.275198  0.275622 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.6763e-07 ( -2.41307e-08  2.4221e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.108 sec. to    0.892 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.834167     ( -0.609555   0.513638 )
Epeak [keV] : 140.962      ( -51.059 -140.962 )
Norm@50keV  : 4.42716E-02    ( -0.0181154   0.0382073 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.41 using 59 PHA bins.
# Reduced chi-squared =         0.9360 for     56 degrees of freedom 
# Null hypothesis probability =   6.114167e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.17235 ( -0.2828  0.28278 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.63447e-07 ( -2.5102e-08  2.5004e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.108 sec. to    0.892 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.834460   ( -0.296741   0.657667 )
beta        : -10.00000    ( 10   20 )
Epeak [keV] : 140.991      ( -36.1464 -140.991 )
Norm@50keV   : 4.42563E-02    ( -0.018105   0.0160432 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.41 using 59 PHA bins.
# Reduced chi-squared =         0.9530 for     55 degrees of freedom 
# Null hypothesis probability =   5.740545e-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]    : 18.7997  (-1.86977  2.12032)
R^2/D10^2   : 0.182206  (-0.0549538   0.0769614)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.73 using 59 PHA bins.
# Reduced chi-squared =          1.364 for     57 degrees of freedom 
# Null hypothesis probability =   3.537443e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.271e-08   2.158e-09
25- 50  6.066e-08   7.500e-09
50-150  1.572e-07   2.235e-08
15-150  2.306e-07   2.300e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-22.7645      -200)
Norm        : 13.4412       (-1.12057     1.12057)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.27 using 59 PHA bins.
# Reduced chi-squared =          1.110 for     57 degrees of freedom 
# Null hypothesis probability =   2.647489e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.348e-08   3.195e-09
25- 50  6.440e-08   1.507e-08
50-150  1.412e-07   4.931e-08
15-150  2.391e-07   5.900e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.94975        (-1.889      2.64972)
R1^2/D10^2  : 4.43765        (-3.17413      16.5884)
kT2 [keV]   : 25.0583        (-3.86449      6.44344)
R2^2/D10^2  : 6.10524E-02    (-0.0344191   0.0454531)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.32 using 59 PHA bins.
# Reduced chi-squared =         0.9332 for     55 degrees of freedom 
# Null hypothesis probability =   6.158762e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.727e-08   1.283e-08
25- 50  5.797e-08   1.740e-08
50-150  1.776e-07   4.806e-08
15-150  2.629e-07   6.660e-08
Plot creation:
Tue Jul 26 18:33:46 EDT 2016