batgrbproduct analysis for trigger=868853

batgrbproduct Analysis for Trigger=868853

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Oct 27 16:10:16 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger868853/GCN5_download_cron
======================================================================

  Trigger: 00868853      Segment: 000

  BAT Trigger Time: 562219096   [s; MET]
      Trigger Stop: 562219160   [s; MET]
               UTC: 2018-10-26T03:57:54.185260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 307.799597663764   Dec: 40.6713205264322  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.04
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.04

  Flight Position:   [ source = BAT ]
    RA: 307.799597663764   Dec: 40.6713205264322  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 307.685605770818   Dec: 40.674825658437  [deg; J2000]  
        { 20h 30m 44.5s , +40d 40' 29.4" }
         +/- 3.45819740293046 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.52215601311347 [arcmin] (formal 1-sigma fit error)
    SNR: 5.16812464625274
 
  Angular difference between Flight and Ground position is 5.191627 arcmin
 
  Partial Coding Fraction: 0.828125    [ 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     0.391293   0.227752  -0.025037   0.009142
           0.060158   0.061633   0.053276   0.047375 [error]
 Peak      0.391293   0.227752  -0.025037   0.009142
           0.060158   0.061633   0.053276   0.047375 [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 1.21e-07 8.83e-08 4.26e-08 2.91e-08 2.66e-07 2.81e-07   erg/cm2
              Error 2.89e-08 3.17e-08 3.09e-08 4.29e-08 8.50e-08 1.05e-07   erg/cm2
Peak flux Power-law 6.39e-02 2.62e-02 6.32e-03 1.85e-03 9.75e-02 9.83e-02   ph/cm2/s
              Error 1.55e-02 8.97e-03 4.45e-03 2.57e-03 2.31e-02 2.35e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.22e-07 1.02e-07 2.46e-08 1.19e-09 2.50e-07 2.49e-07   erg/cm2
              Error 3.08e-08 4.06e-08 3.33e-08 2.99e-08 7.52e-08 8.62e-08   erg/cm2
Peak flux Cutoff-PL 6.34e-02 3.04e-02 3.92e-03 1.05e-04 9.81e-02 9.77e-02   ph/cm2/s
              Error 1.65e-02 1.16e-02 4.93e-03 1.83e-03 2.24e-02 2.25e-02   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    3.052    0.630    -      -           3.41e-04 1.88e-04   67.550 57
CPL   1.271    0.000      12.5    0.0      5.89e-03 0.00e+00   65.940 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.052    0.630    -      -           3.41e-04 1.88e-04   67.550 57
CPL   1.271    0.000      12.5    0.0      5.89e-03 0.00e+00   65.940 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
  307.6856 +40.6748 0.0372   26.2 -148.3       0.6257     5.2  TRIG_00868853       
------------------------------------------
 
Foreground time interval of the image:
  0.000   4.290 (delta_t =   4.290 [sec])
  5.000  64.000 (delta_t =  59.000 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 4.290000
5.000000 64.000000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.05201     ( -0.541228   0.718552 )
Norm@50keV  : 3.41440E-04    ( -0.000175061   0.000201487 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.55 using 59 PHA bins.
# Reduced chi-squared =          1.185 for     57 degrees of freedom 
# Null hypothesis probability =   1.600117e-01
 
Photon flux (15-150 keV)    in 63.29 sec: 9.75431E-02 ( -0.0229908  0.0231679 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.66082e-07 ( -7.98846e-08  9.01889e-08 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 4.290000
5.000000 64.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27102     (     )
Epeak [keV] : 12.5035      (   )
Norm@50keV  : 5.88856E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.94 using 59 PHA bins.
# Reduced chi-squared =          1.178 for     56 degrees of freedom 
# Null hypothesis probability =   1.707537e-01
 
Photon flux (15-150 keV)    in 63.29 sec: 9.80592E-02 ( -0.0224672  0.0222688 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.49902e-07 ( -6.92101e-08  8.11017e-08 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 4.290000
5.000000 64.000000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.21366   ( -3.94287   1.11258 )
beta        : -9.99964    ( 9.99964   19.9996 )
Epeak [keV] : 13.0360      ( -8.22998 10.0996 )
Norm@50keV   : 6.45465E-03    ( -0.00646564   3.59292 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.94 using 59 PHA bins.
# Reduced chi-squared =          1.199 for     55 degrees of freedom 
# Null hypothesis probability =   1.482491e-01
 
Photon flux (15-150 keV)    in 63.29 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]    : 5.51643  (-1.4657  1.79573)
R^2/D10^2   : 0.536058  (-0.375603   1.6641)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.03 using 59 PHA bins.
# Reduced chi-squared =          1.194 for     57 degrees of freedom 
# Null hypothesis probability =   1.504166e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.203e-07   6.370e-08
25- 50  9.939e-08   5.896e-08
50-150  6.366e-09   5.718e-09
15-150  2.261e-07   1.171e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 18.5782       (-7.36524      11.9865)
Norm        : 1.33090       (-0.569798     1.26646)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.95 using 59 PHA bins.
# Reduced chi-squared =          1.157 for     57 degrees of freedom 
# Null hypothesis probability =   1.949142e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.224e-07   5.233e-08
25- 50  1.011e-07   5.180e-08
50-150  2.667e-08   2.266e-08
15-150  2.501e-07   1.149e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.07837        (-2.79307      2.71385)
R1^2/D10^2  : 5.11886        (-2.84697      -5.47202)
kT2 [keV]   : 8.34253        (-6.48782      6.47151)
R2^2/D10^2  : 6.11531E-02    (-0.062108   0.617178)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.29 using 59 PHA bins.
# Reduced chi-squared =          1.187 for     55 degrees of freedom 
# Null hypothesis probability =   1.614261e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.211e-07   6.209e-08
25- 50  1.056e-07   5.658e-08
50-150  2.839e-08   1.810e-08
15-150  2.551e-07   1.352e-07

Peak spectrum fit

Power-law model
Time interval is from    5.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.05201     ( -0.541228   0.718552 )
Norm@50keV  : 3.41440E-04    ( -0.000175061   0.000201487 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.55 using 59 PHA bins.
# Reduced chi-squared =          1.185 for     57 degrees of freedom 
# Null hypothesis probability =   1.600117e-01
 
Photon flux (15-150 keV)    in 63.29 sec: 9.75431E-02 ( -0.0229908  0.0231679 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.66082e-07 ( -7.98846e-08  9.01889e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    5.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27102     (     )
Epeak [keV] : 12.5035      (   )
Norm@50keV  : 5.88856E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.94 using 59 PHA bins.
# Reduced chi-squared =          1.178 for     56 degrees of freedom 
# Null hypothesis probability =   1.707537e-01
 
Photon flux (15-150 keV)    in 63.29 sec: 9.80592E-02 ( -0.0224672  0.0222688 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.49902e-07 ( -6.92101e-08  8.11017e-08 ) ergs/cm2
 
Band function
Time interval is from    5.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.21366   ( -3.94287   1.11258 )
beta        : -9.99964    ( 9.99964   19.9996 )
Epeak [keV] : 13.0360      ( -8.22998 10.0996 )
Norm@50keV   : 6.45465E-03    ( -0.00646564   3.59292 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.94 using 59 PHA bins.
# Reduced chi-squared =          1.199 for     55 degrees of freedom 
# Null hypothesis probability =   1.482491e-01
 
Photon flux (15-150 keV)    in 63.29 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]    : 5.51643  (-1.4657  1.79573)
R^2/D10^2   : 0.536058  (-0.375603   1.6641)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.03 using 59 PHA bins.
# Reduced chi-squared =          1.194 for     57 degrees of freedom 
# Null hypothesis probability =   1.504166e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.203e-07   6.210e-08
25- 50  9.939e-08   5.545e-08
50-150  6.366e-09   5.693e-09
15-150  2.261e-07   1.251e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 18.5782       (-7.36524      11.9865)
Norm        : 1.33090       (-0.569798     1.26646)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.95 using 59 PHA bins.
# Reduced chi-squared =          1.157 for     57 degrees of freedom 
# Null hypothesis probability =   1.949142e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.224e-07   5.091e-08
25- 50  1.011e-07   5.304e-08
50-150  2.667e-08   2.304e-08
15-150  2.501e-07   1.149e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.07837        (-2.9841      2.71919)
R1^2/D10^2  : 5.11886        (-2.84697      -5.47202)
kT2 [keV]   : 8.34253        (-8.30542      9.15337)
R2^2/D10^2  : 6.11531E-02    (-0.062108   0.618904)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.29 using 59 PHA bins.
# Reduced chi-squared =          1.187 for     55 degrees of freedom 
# Null hypothesis probability =   1.614261e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.211e-07   5.905e-08
25- 50  1.056e-07   5.756e-08
50-150  2.839e-08   2.226e-08
15-150  2.551e-07   1.307e-07
Plot creation:
Sat Oct 27 16:14:29 EDT 2018