batgrbproduct analysis for trigger=811686

batgrbproduct Analysis for Trigger=811686

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Feb 26 19:25:24 EST 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger811686/GCN5_download_cron
======================================================================

  Trigger: 00811686      Segment: 000

  BAT Trigger Time: 541283472   [s; MET]
      Trigger Stop: 541283536   [s; MET]
               UTC: 2018-02-25T20:30:51.464500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 185.608944295945   Dec: 29.2927479190389  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.2
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.2

  Flight Position:   [ source = BAT ]
    RA: 185.608944295945   Dec: 29.2927479190389  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 185.668803559162   Dec: 29.2449910595698  [deg; J2000]  
        { 12h 22m 40.5s , +29d 14' 42.0" }
         +/- 4.47260202332856 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.62851684733529 [arcmin] (formal 1-sigma fit error)
    SNR: 3.57887546007248
 
  Angular difference between Flight and Ground position is 4.245765 arcmin
 
  Partial Coding Fraction: 0.7421875    [ 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     0.186317   0.226338   0.052098  -0.079199
           0.057590   0.060429   0.055006   0.055272 [error]
 Peak      0.186317   0.226338   0.052098  -0.079199
           0.057590   0.060429   0.055006   0.055272 [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 5.87e-08 6.77e-08 5.62e-08 7.82e-08 2.11e-07 2.60e-07   erg/cm2
              Error 2.51e-08 2.81e-08 3.76e-08 1.19e-07 1.00e-07 1.72e-07   erg/cm2
Peak flux Power-law 3.01e-02 1.93e-02 7.99e-03 4.50e-03 5.96e-02 6.18e-02   ph/cm2/s
              Error 1.30e-02 7.78e-03 5.55e-03 6.38e-03 2.23e-02 2.38e-02   ph/cm2/s
 
Fluence   Cutoff-PL 6.60e-08 8.02e-08 1.97e-09 1.57e-14 1.48e-07 1.48e-07   erg/cm2
              Error 2.41e-08 6.38e-08 2.52e-08 4.06e-09 6.25e-08 6.26e-08   erg/cm2
Peak flux Cutoff-PL 3.21e-02 2.48e-02 3.63e-04 1.87e-09 5.72e-02 5.72e-02   ph/cm2/s
              Error 1.57e-02 1.88e-02 3.80e-03 3.19e-04 2.01e-02 2.01e-02   ph/cm2/s
 
Fluence        Band 6.48e-08 8.44e-08 1.77e-08 3.63e-09 1.71e-07 1.71e-07   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    2.279    0.699    -      -           3.45e-04 1.89e-04   42.250 57
CPL  -6.266    0.500      26.3    5.5      5.68e+02 3.01e+05   37.620 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.279    0.699    -      -           3.45e-04 1.89e-04   42.250 57
CPL  -6.266    0.500      26.3    5.5      5.68e+02 3.01e+05   37.620 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
  185.6688 +29.2450 0.0536   31.5   12.1       0.4285     3.6  TRIG_00811686       
------------------------------------------
 
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: 2.27854     ( -0.617875   0.780252 )
Norm@50keV  : 3.44919E-04    ( -0.000184583   0.000194369 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.25 using 59 PHA bins.
# Reduced chi-squared =         0.7412 for     57 degrees of freedom 
# Null hypothesis probability =   9.276778e-01
 
Photon flux (15-150 keV)    in 64 sec: 5.96063E-02 ( -0.0221942  0.0224607 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10902e-07 ( -9.33645e-08  1.07283e-07 ) 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: -6.26579     ( 6.31616   7.31554 )
Epeak [keV] : 26.2987      ( -4.82518 6.15316 )
Norm@50keV  : 568.399    ( -716.505   601723 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.62 using 59 PHA bins.
# Reduced chi-squared =         0.6718 for     56 degrees of freedom 
# Null hypothesis probability =   9.718946e-01
 
Photon flux (15-150 keV)    in 64 sec: 5.72348E-02 ( -0.0198773  0.0203917 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.48276e-07 ( -5.56403e-08  6.92685e-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       : 4.96903   ( -0.0758632   -4.96903 )
beta        : -3.70408    ( 3.70408   1.48401 )
Epeak [keV] : 25.2275      ( -6.18383 7.1338 )
Norm@50keV   : 82.8821    ( -27.6522   465.278 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.47 using 59 PHA bins.
# Reduced chi-squared =         0.6812 for     55 degrees of freedom 
# Null hypothesis probability =   9.661360e-01
 
Photon flux (15-150 keV)    in 64 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.70573e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.90083  (-1.81952  2.65691)
R^2/D10^2   : 0.133245  (-0.133245   0.335852)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.59 using 59 PHA bins.
# Reduced chi-squared =         0.6771 for     57 degrees of freedom 
# Null hypothesis probability =   9.706473e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.427e-08   3.946e-08
25- 50  8.559e-08   5.562e-08
50-150  1.347e-08   1.192e-08
15-150  1.633e-07   1.007e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 34.2429       (-18.3006      66.1063)
Norm        : 0.446245       (-0.222117     0.483231)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.66 using 59 PHA bins.
# Reduced chi-squared =         0.7133 for     57 degrees of freedom 
# Null hypothesis probability =   9.498418e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.183e-08   3.821e-08
25- 50  7.570e-08   4.778e-08
50-150  4.897e-08   4.246e-08
15-150  1.865e-07   1.281e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 21.9278        (-22.3662      -22.3662)
R1^2/D10^2  : 1.69215E-04        (-0.000176523      -0.000176523)
kT2 [keV]   : 6.66789        (-6.65771      2.85025)
R2^2/D10^2  : 0.146815    (-0.147447   -0.147447)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.60 using 59 PHA bins.
#Fit statistic : Chi-Squared =          38.52 using 59 PHA bins.
# Reduced chi-squared =         0.7017 for     55 degrees of freedom 
# Reduced chi-squared =         0.7004 for     55 degrees of freedom 
# Null hypothesis probability =   9.543558e-01
# Null hypothesis probability =   9.552106e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.410e-08   2.511e-01
25- 50  8.582e-08   2.018e+00
50-150  1.364e-08   4.682e+01
15-150  1.636e-07   5.011e+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: 2.27854     ( -0.617875   0.780252 )
Norm@50keV  : 3.44919E-04    ( -0.000184583   0.000194369 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.25 using 59 PHA bins.
# Reduced chi-squared =         0.7412 for     57 degrees of freedom 
# Null hypothesis probability =   9.276778e-01
 
Photon flux (15-150 keV)    in 64 sec: 5.96063E-02 ( -0.0221942  0.0224607 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10902e-07 ( -9.33645e-08  1.07283e-07 ) 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: -6.26579     ( 6.31616   7.31554 )
Epeak [keV] : 26.2987      ( -4.82518 6.15356 )
Norm@50keV  : 568.399    ( -716.505   601703 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.62 using 59 PHA bins.
# Reduced chi-squared =         0.6718 for     56 degrees of freedom 
# Null hypothesis probability =   9.718946e-01
 
Photon flux (15-150 keV)    in 64 sec: 5.72348E-02 ( -0.0198773  0.0203917 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.48276e-07 ( -5.56403e-08  6.92685e-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       : 4.96903   ( -0.0758632   -4.96903 )
beta        : -3.70408    ( 3.70408   1.48401 )
Epeak [keV] : 25.2275      ( -6.18383 7.1338 )
Norm@50keV   : 82.8821    ( -27.6522   465.278 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.47 using 59 PHA bins.
# Reduced chi-squared =         0.6812 for     55 degrees of freedom 
# Null hypothesis probability =   9.661360e-01
 
Photon flux (15-150 keV)    in 64 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.70573e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.90083  (-1.81952  2.65691)
R^2/D10^2   : 0.133245  (-0.133245   0.335852)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.59 using 59 PHA bins.
# Reduced chi-squared =         0.6771 for     57 degrees of freedom 
# Null hypothesis probability =   9.706473e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.427e-08   3.824e-08
25- 50  8.559e-08   5.494e-08
50-150  1.347e-08   1.247e-08
15-150  1.633e-07   1.076e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 34.2429       (-18.3006      66.1063)
Norm        : 0.446245       (-0.222117     0.483231)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.66 using 59 PHA bins.
# Reduced chi-squared =         0.7133 for     57 degrees of freedom 
# Null hypothesis probability =   9.498418e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.183e-08   3.917e-08
25- 50  7.570e-08   4.930e-08
50-150  4.897e-08   4.253e-08
15-150  1.865e-07   1.290e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 21.9278        (-22.3662      -22.3662)
R1^2/D10^2  : 1.69215E-04        (-0.000176523      -0.000176523)
kT2 [keV]   : 6.66789        (-6.65771      2.85025)
R2^2/D10^2  : 0.146815    (-0.147447   -0.147447)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.60 using 59 PHA bins.
#Fit statistic : Chi-Squared =          38.52 using 59 PHA bins.
# Reduced chi-squared =         0.7017 for     55 degrees of freedom 
# Reduced chi-squared =         0.7004 for     55 degrees of freedom 
# Null hypothesis probability =   9.543558e-01
# Null hypothesis probability =   9.552106e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.410e-08   2.462e-01
25- 50  8.582e-08   2.101e+00
50-150  1.364e-08   4.608e+01
15-150  1.636e-07   4.992e+01
Plot creation:
Mon Feb 26 19:31:11 EST 2018