batgrbproduct analysis for trigger=767563

batgrbproduct Analysis for Trigger=767563

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Aug 13 10:34:46 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger767563
======================================================================

  Trigger: 00767563      Segment: 000

  BAT Trigger Time: 524279616   [s; MET]
      Trigger Stop: 524279680   [s; MET]
               UTC: 2017-08-13T01:13:16.481520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 201.05359481432   Dec: -5.46898251598156  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.29
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    12.29

  Flight Position:   [ source = BAT ]
    RA: 201.05359481432   Dec: -5.46898251598156  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 201.057545818891   Dec: -5.53419816130504  [deg; J2000]  
        { 13h 24m 13.8s , -05d 32' 03.1" }
         +/- 3.26308299378819 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.85885121509621 [arcmin] (formal 1-sigma fit error)
    SNR: 5.61518310973951
 
  Angular difference between Flight and Ground position is 3.920047 arcmin
 
  Partial Coding Fraction: 0.7109375    [ including projection effects ]

  Duration
     T90: 75.5079999566078 +/- 10.9253905864982
        Measured from: -7.41600000858307
                   to: 68.0919999480247     [s; relative to TRIGTIME]
     T50: 26.9119999408722 +/- 7.58189213443424
        Measured from: 0.407999992370605
                   to: 27.3199999332428     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.63599997758865     
                   to: 3.63599997758865     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.16399997472763     
                   to: 78.8719999790192     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.611542   0.835600   0.865734   0.283508
           0.067867   0.067616   0.060202   0.052302 [error]
 Peak      0.017955   0.035248   0.038201   0.015387
           0.007489   0.007572   0.007173   0.006032 [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 1.71e-07 3.84e-07 6.81e-07 2.84e-06 1.86e-06 4.07e-06   erg/cm2
              Error 2.67e-08 3.53e-08 5.90e-08 5.74e-07 1.51e-07 6.02e-07   erg/cm2
Peak flux Power-law 1.91e-01 2.44e-01 2.28e-01 3.73e-01 7.88e-01 1.04e+00   ph/cm2/s
              Error 8.90e-02 6.92e-02 5.73e-02 2.10e-01 1.86e-01 2.53e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.68e-07 3.85e-07 6.85e-07 2.62e-06 1.85e-06 3.83e-06   erg/cm2
              Error 3.18e-08 3.75e-08 6.58e-08 9.23e-07 1.58e-07 1.16e-06   erg/cm2
Peak flux Cutoff-PL 1.91e-01 2.44e-01 2.28e-01 3.70e-01 7.88e-01 1.03e+00   ph/cm2/s
              Error 7.36e-02 7.61e-02 6.28e-02 2.49e-01 1.87e-01 3.14e-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    1.172    0.138    -      -           2.06e-03 1.57e-04   68.050 57
CPL   1.081    0.364     528.4    0.0      2.27e-03 9.14e-04   68.070 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    1.100    0.415    -      -           6.80e-03 1.55e-03   65.890 57
CPL   1.098    0.418    9999.4    0.0      6.83e-03 1.42e-02   65.890 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: 70.016000 sec.
T50 in the 50-300 keV band: 20.416000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   88.036   -9.164   78.872
T90    75.508   -7.416   68.092
T50    26.912    0.408   27.320
Peak    1.000    2.636    3.636

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  201.0575    -5.5342   0.0343    30.2140   -34.6071         2.9941048      5.615 TRIG_00767563                 
 
Foreground time interval of the image:
 -9.164  72.901 (delta_t =  82.065 [sec])
Background time interval of the image:
-13.699  -9.164 (delta_t =   4.535 [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   -9.164 sec. to   78.872 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17231     ( -0.13942   0.136765 )
Norm@50keV  : 2.06237E-03    ( -0.000157017   0.000156627 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.05 using 59 PHA bins.
# Reduced chi-squared =          1.194 for     57 degrees of freedom 
# Null hypothesis probability =   1.499816e-01
 
Photon flux (15-150 keV)    in 88.04 sec: 0.241179 ( -0.0192985  0.0193849 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.85683e-06 ( -1.50908e-07  1.51774e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -9.164 sec. to   78.872 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08122     ( -0.54495   0.183749 )
Epeak [keV] : 528.441      ( -880.362 -880.362 )
Norm@50keV  : 2.26789E-03    ( -0.000251816   0.00157662 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.07 using 59 PHA bins.
# Reduced chi-squared =          1.216 for     56 degrees of freedom 
# Null hypothesis probability =   1.293282e-01
 
Photon flux (15-150 keV)    in 88.04 sec: 0.240480 ( -0.020189  0.0198 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.85208e-06 ( -1.60127e-07  1.55813e-07 ) ergs/cm2
 
Band function
Time interval is from   -9.164 sec. to   78.872 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.91055   ( -4.91055   -4.91055 )
beta        : -1.19850    ( -0.147082   0.145811 )
Epeak [keV] : 23.3185      ( -23.3185 5.81941 )
Norm@50keV   : 209.896    ( -15.8145   519380 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.43 using 59 PHA bins.
# Reduced chi-squared =          1.226 for     55 degrees of freedom 
# Null hypothesis probability =   1.213220e-01
 
Photon flux (15-150 keV)    in 88.04 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]    : 20.4855  (-2.10848  2.4613)
R^2/D10^2   : 1.01365E-02  (-0.00314527   0.00438968)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         104.66 using 59 PHA bins.
# Reduced chi-squared =         1.8361 for     57 degrees of freedom 
# Null hypothesis probability =   1.225009e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.150e-08   1.170e-08
25- 50  3.618e-07   4.358e-08
50-150  1.129e-06   1.572e-07
15-150  1.562e-06   1.453e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-15.9772      -200)
Norm        : 1.01572       (-0.0784856     0.0784856)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          90.65 using 59 PHA bins.
# Reduced chi-squared =          1.590 for     57 degrees of freedom 
# Null hypothesis probability =   3.033981e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.228e-07   2.192e-08
25- 50  4.285e-07   7.228e-08
50-150  9.397e-07   3.284e-07
15-150  1.591e-06   4.019e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.86127        (-2.1618      2.61778)
R1^2/D10^2  : 0.139452        (-0.0821087      0.281893)
kT2 [keV]   : 33.8605        (-7.45512      16.8944)
R2^2/D10^2  : 1.73712E-03    (-0.00121039   0.00125534)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.21 using 59 PHA bins.
# Reduced chi-squared =          1.240 for     55 degrees of freedom 
# Null hypothesis probability =   1.086745e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.608e-07   6.395e-08
25- 50  3.939e-07   1.360e-07
50-150  1.312e-06   4.762e-07
15-150  1.866e-06   6.362e-07

Peak spectrum fit

Power-law model
Time interval is from    2.636 sec. to    3.636 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09976     ( -0.431243   0.399277 )
Norm@50keV  : 6.79627E-03    ( -0.00155313   0.00154711 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.89 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     57 degrees of freedom 
# Null hypothesis probability =   1.964383e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.788308 ( -0.185365  0.186489 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.10635e-08 ( -1.74344e-08  1.7697e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.636 sec. to    3.636 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09803     ( -0.436298   0.399704 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 6.83116E-03    ( -0.00154464   0.0268909 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.89 using 59 PHA bins.
# Reduced chi-squared =          1.177 for     56 degrees of freedom 
# Null hypothesis probability =   1.719176e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.788437 ( -0.188072  0.185443 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.09821e-08 ( -1.98165e-08  1.77023e-08 ) ergs/cm2
 
Band function
Time interval is from    2.636 sec. to    3.636 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96054   ( -4.96054   -4.96054 )
beta        : -1.27031    ( -0.695213   0.503763 )
Epeak [keV] : 31.3953      ( -31.3953 14.7195 )
Norm@50keV   : 132.343    ( -29.6384   2.16325e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.83 using 59 PHA bins.
# Reduced chi-squared =          1.179 for     55 degrees of freedom 
# Null hypothesis probability =   1.711906e-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]    : 18.2155  (-4.87524  8.50645)
R^2/D10^2   : 4.94219E-02  (-0.0349483   0.0908551)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.93 using 59 PHA bins.
# Reduced chi-squared =          1.227 for     57 degrees of freedom 
# Null hypothesis probability =   1.167399e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.271e-09   1.421e-09
25- 50  1.526e-08   6.868e-09
50-150  3.686e-08   1.972e-08
15-150  5.540e-08   2.469e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-79.6378      -200)
Norm        : 3.27100       (-0.764794     0.764794)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.23 using 59 PHA bins.
# Reduced chi-squared =          1.215 for     57 degrees of freedom 
# Null hypothesis probability =   1.283414e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.149e-09   4.894e-09
25- 50  1.568e-08   9.355e-09
50-150  3.438e-08   2.009e-08
15-150  5.821e-08   3.470e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.93 using 59 PHA bins.
#Fit statistic : Chi-Squared =          64.27 using 59 PHA bins.
#Fit statistic : Chi-Squared =          64.06 using 59 PHA bins.
#Fit statistic : Chi-Squared =          64.05 using 59 PHA bins.
# Reduced chi-squared =          1.271 for     55 degrees of freedom 
# Reduced chi-squared =          1.169 for     55 degrees of freedom 
# Reduced chi-squared =          1.165 for     55 degrees of freedom 
# Reduced chi-squared =          1.164 for     55 degrees of freedom 
# Null hypothesis probability =   8.466919e-02
# Null hypothesis probability =   1.837553e-01
# Null hypothesis probability =   1.885504e-01
# Null hypothesis probability =   1.888545e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00
Plot creation:
Sun Aug 13 14:42:54 EDT 2017