batgrbproduct analysis for trigger=750096

batgrbproduct Analysis for Trigger=750096

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Apr 27 18:59:39 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger750096/GCN5_download_cron
======================================================================

  Trigger: 00750096      Segment: 000

  BAT Trigger Time: 514939480   [s; MET]
      Trigger Stop: 514939544   [s; MET]
               UTC: 2017-04-26T22:44:21.029820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 184.879938135627   Dec: 5.65587280404081  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    5.8
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    5.8

  Flight Position:   [ source = BAT ]
    RA: 184.879938135627   Dec: 5.65587280404081  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 184.80238150739   Dec: 5.62672484347984  [deg; J2000]  
        { 12h 19m 12.6s , +05d 37' 36.2" }
         +/- 4.60793300988188 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.30738041808554 [arcmin] (formal 1-sigma fit error)
    SNR: 3.42967084705155
 
  Angular difference between Flight and Ground position is 4.950095 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.179073   0.160076  -0.038771  -0.040393
           0.043683   0.045857   0.039535   0.037704 [error]
 Peak      0.179073   0.160076  -0.038771  -0.040393
           0.043683   0.045857   0.039535   0.037704 [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 4.50e-08 4.15e-08 2.63e-08 2.68e-08 1.24e-07 1.45e-07   erg/cm2
              Error 1.69e-08 1.90e-08 2.64e-08 4.41e-08 5.94e-08 8.38e-08   erg/cm2
Peak flux Power-law 2.30e-02 1.21e-02 3.97e-03 1.65e-03 4.00e-02 4.06e-02   ph/cm2/s
              Error 8.80e-03 5.30e-03 3.73e-03 2.47e-03 1.49e-02 1.55e-02   ph/cm2/s
 
Fluence   Cutoff-PL 4.39e-08 7.05e-08 8.35e-09 1.05e-11 1.23e-07 1.23e-07   erg/cm2
              Error 2.02e-08 3.09e-08 1.65e-08 1.40e-09 4.41e-08 4.41e-08   erg/cm2
Peak flux Cutoff-PL 2.15e-02 2.07e-02 1.42e-03 1.02e-06 4.36e-02 4.37e-02   ph/cm2/s
              Error 1.04e-02 8.56e-03 2.57e-03 1.16e-04 1.40e-02 1.40e-02   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.15e-02 2.07e-02 1.65e-03 6.74e-06 4.38e-02 4.38e-02   ph/cm2/s
              Error 1.00e-02 8.34e-03 -------- 5.76e-04 1.38e-02 1.38e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.631    0.710    -      -           1.87e-04 1.17e-04   68.680 57
CPL  -2.708    0.428      28.7    7.5      7.12e-01 9.73e+04   61.790 56
 
The chi2 of BB fit is 62.07 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    2.631    0.710    -      -           1.87e-04 1.17e-04   68.680 57
CPL  -2.708    0.428      28.7    7.5      7.12e-01 7.37e+04   61.790 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  184.8024  +5.6267 0.0561    8.7   25.5       0.3612     3.4  TRIG_00750096       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [sec])
Background time interval of the image:

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   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.63082     ( -0.591009   0.828327 )
Norm@50keV  : 1.87122E-04    ( -0.000108423   0.000126027 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.68 using 59 PHA bins.
# Reduced chi-squared =          1.205 for     57 degrees of freedom 
# Null hypothesis probability =   1.381159e-01
 
Photon flux (15-150 keV)    in 64 sec: 4.00158E-02 ( -0.0147677  0.0150436 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.23968e-07 ( -5.5841e-08  6.29852e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.70804     ( 2.76014   3.61583 )
Epeak [keV] : 28.7339      ( -7.76837 7.31731 )
Norm@50keV  : 0.711905    ( -0.894815   194605 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.79 using 59 PHA bins.
# Reduced chi-squared =          1.103 for     56 degrees of freedom 
# Null hypothesis probability =   2.771061e-01
 
Photon flux (15-150 keV)    in 64 sec: 4.36429E-02 ( -0.0138541  0.0140648 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22805e-07 ( -4.23526e-08  4.57747e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.68234   ( -4.65511   -4.68234 )
beta        : -9.37167    ( 9.37167   19.3281 )
Epeak [keV] : 29.2719      ( -6.33984 6.28913 )
Norm@50keV   : 14.8595    ( -4.65672   148.018 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.89 using 59 PHA bins.
# Reduced chi-squared =          1.125 for     55 degrees of freedom 
# Null hypothesis probability =   2.437559e-01
 
Photon flux (15-150 keV)    in 64 sec: 4.38021E-02 ( 6.9562  -0.01367 ) 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]    : 7.23470  (-1.77864  2.12313)
R^2/D10^2   : 8.24971E-02  (-0.082462   0.171346)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.07 using 59 PHA bins.
# Reduced chi-squared =          1.089 for     57 degrees of freedom 
# Null hypothesis probability =   3.004630e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.588e-08   2.792e-08
25- 50  6.692e-08   4.259e-08
50-150  1.248e-08   1.122e-08
15-150  1.253e-07   7.926e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 26.1348       (-11.9022      24.7335)
Norm        : 0.397689       (-0.183415     0.360577)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.35 using 59 PHA bins.
# Reduced chi-squared =          1.146 for     57 degrees of freedom 
# Null hypothesis probability =   2.094514e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.794e-08   2.892e-08
25- 50  5.053e-08   3.248e-08
50-150  2.291e-08   2.192e-08
15-150  1.214e-07   8.246e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.20387        (-7.21679      -7.21679)
R1^2/D10^2  : 3.87161E-02        (-0.0388449      -0.0388449)
kT2 [keV]   : 7.27693        (-7.24299      -7.24299)
R2^2/D10^2  : 4.34165E-02    (-0.0435645   -0.0435645)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.07 using 59 PHA bins.
# Reduced chi-squared =          1.128 for     55 degrees of freedom 
# Null hypothesis probability =   2.389248e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.583e-08   3.885e-01
25- 50  6.700e-08   2.943e+00
50-150  1.254e-08   6.816e+01
15-150  1.254e-07   7.331e+01

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.63082     ( -0.591009   0.828327 )
Norm@50keV  : 1.87122E-04    ( -0.000108423   0.000126027 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.68 using 59 PHA bins.
# Reduced chi-squared =          1.205 for     57 degrees of freedom 
# Null hypothesis probability =   1.381159e-01
 
Photon flux (15-150 keV)    in 64 sec: 4.00158E-02 ( -0.0147677  0.0150436 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.23968e-07 ( -5.5841e-08  6.29852e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.70804     ( 2.76014   3.61583 )
Epeak [keV] : 28.7339      ( -7.76837 7.31731 )
Norm@50keV  : 0.711905    ( -0.894815   147300 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.79 using 59 PHA bins.
# Reduced chi-squared =          1.103 for     56 degrees of freedom 
# Null hypothesis probability =   2.771061e-01
 
Photon flux (15-150 keV)    in 64 sec: 4.36429E-02 ( -0.0138541  0.0140648 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.22805e-07 ( -4.23526e-08  4.57747e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.68234   ( -4.65511   -4.68234 )
beta        : -9.37167    ( 9.37167   19.3281 )
Epeak [keV] : 29.2719      ( -6.33984 6.28913 )
Norm@50keV   : 14.8595    ( -4.65672   148.018 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.89 using 59 PHA bins.
# Reduced chi-squared =          1.125 for     55 degrees of freedom 
# Null hypothesis probability =   2.437559e-01
 
Photon flux (15-150 keV)    in 64 sec: 4.38021E-02 ( 6.9562  -0.01367 ) 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]    : 7.23470  (-1.77864  2.12313)
R^2/D10^2   : 8.24971E-02  (-0.082462   0.171346)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.07 using 59 PHA bins.
# Reduced chi-squared =          1.089 for     57 degrees of freedom 
# Null hypothesis probability =   3.004630e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.588e-08   2.704e-08
25- 50  6.692e-08   4.035e-08
50-150  1.248e-08   1.074e-08
15-150  1.253e-07   7.584e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 26.1348       (-11.9022      24.7335)
Norm        : 0.397689       (-0.183415     0.360577)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.35 using 59 PHA bins.
# Reduced chi-squared =          1.146 for     57 degrees of freedom 
# Null hypothesis probability =   2.094514e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.794e-08   2.908e-08
25- 50  5.053e-08   3.116e-08
50-150  2.291e-08   2.256e-08
15-150  1.214e-07   7.910e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.20387        (-7.21679      -7.21679)
R1^2/D10^2  : 3.87161E-02        (-0.0388449      -0.0388449)
kT2 [keV]   : 7.27693        (-7.24299      -7.24299)
R2^2/D10^2  : 4.34165E-02    (-0.0435645   -0.0435645)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.07 using 59 PHA bins.
# Reduced chi-squared =          1.128 for     55 degrees of freedom 
# Null hypothesis probability =   2.389248e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.583e-08   3.172e-01
25- 50  6.700e-08   3.188e+00
50-150  1.254e-08   7.501e+01
15-150  1.254e-07   7.658e+01
Plot creation:
Thu Apr 27 19:22:26 EDT 2017