batgrbproduct analysis for trigger=814677

batgrbproduct Analysis for Trigger=814677

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Mar 17 10:46:49 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger814677/GCN5_download_cron
======================================================================

  Trigger: 00814677      Segment: 000

  BAT Trigger Time: 542869065.728   [s; MET]
      Trigger Stop: 542869067.776   [s; MET]
               UTC: 2018-03-16T04:57:25.096800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 265.436483229163   Dec: 0.736518945680564  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.43
     Image Trigger?:     NO
     Rate S/N Ratio:     21.51743479135  [ if not an image trigger ]
     Image S/N Ratio:    9.43

  Flight Position:   [ source = BAT ]
    RA: 265.436483229163   Dec: 0.736518945680564  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 265.421875087648   Dec: 0.737307966474289  [deg; J2000]  
        { 17h 41m 41.3s , +00d 44' 14.3" }
         +/- 1.45341101967127 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.611808895292724 [arcmin] (formal 1-sigma fit error)
    SNR: 17.8293241934772
 
  Angular difference between Flight and Ground position is 0.877694 arcmin
 
  Partial Coding Fraction: 0.2929688    [ including projection effects ]

  Duration
     T90: 87 +/- 20.591260281974
        Measured from: -61.7279999256134
                   to: 25.2720000743866     [s; relative to TRIGTIME]
     T50: 16 +/- 4.24264068711928
        Measured from: -7.7279999256134
                   to: 8.2720000743866     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.27199995517731     
                   to: 2.27199995517731     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -79.7280000448227     
                   to: 37.2719999551773     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.696833   2.863694   1.968227   0.723126
           0.176483   0.175115   0.149409   0.118905 [error]
 Peak      0.061381   0.175634   0.114610   0.069585
           0.017344   0.018958   0.016530   0.013313 [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 6.30e-07 1.19e-06 1.73e-06 5.38e-06 4.91e-06 8.94e-06   erg/cm2
              Error 8.16e-08 9.22e-08 1.47e-07 1.01e-06 3.63e-07 1.10e-06   erg/cm2
Peak flux Power-law 8.77e-01 1.05e+00 9.15e-01 1.36e+00 3.32e+00 4.20e+00   ph/cm2/s
              Error 2.35e-01 1.73e-01 1.32e-01 4.22e-01 4.67e-01 5.66e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.25e-07 1.19e-06 1.74e-06 4.97e-06 4.92e-06 8.53e-06   erg/cm2
              Error 8.92e-08 9.97e-08 1.55e-07 1.61e-06 3.76e-07 1.86e-06   erg/cm2
Peak flux Cutoff-PL 8.84e-01 1.06e+00 9.13e-01 1.34e+00 3.33e+00 4.20e+00   ph/cm2/s
              Error 2.35e-01 1.79e-01 1.40e-01 5.05e-01 4.64e-01 7.27e-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    1.457    0.122    -      -           4.39e-03 3.04e-04   58.160 57
CPL   1.454    0.301    10000.0    0.0      4.41e-03 3.04e-04   58.160 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.203    0.231    -      -           2.83e-02 3.75e-03   70.120 57
CPL   2.330    0.260     111.0    0.0      4.48e-03 5.00e-03   69.390 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: 24.640000 sec.
T50 in the 50-300 keV band: 9.152000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  117.000  -79.728   37.272
T90    87.000  -61.728   25.272
T50    16.000   -7.728    8.272
Peak    1.000    1.272    2.272

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  265.4219  +0.7373 0.0108   38.9   42.8       8.1529    17.8  TRIG_00814677       
------------------------------------------
 
Foreground time interval of the image:
-79.728  24.173 (delta_t = 103.901 [sec])
Background time interval of the image:
-167.227 -79.728 (delta_t =  87.499 [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  -79.728 sec. to   37.272 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45708     ( -0.122366   0.121558 )
Norm@50keV  : 4.39417E-03    ( -0.000303829   0.000303672 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.16 using 59 PHA bins.
# Reduced chi-squared =          1.020 for     57 degrees of freedom 
# Null hypothesis probability =   4.323346e-01
 
Photon flux (15-150 keV)    in 117 sec: 0.542478 ( -0.039991  0.0401017 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.91337e-06 ( -3.6213e-07  3.63761e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -79.728 sec. to   37.272 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45422     ( -0.464923   0.136377 )
Epeak [keV] : 10000.00      ( -10000 -10000 )
Norm@50keV  : 4.40863E-03    ( -0.000304595   0.000304137 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.16 using 59 PHA bins.
# Reduced chi-squared =          1.039 for     56 degrees of freedom 
# Null hypothesis probability =   3.957182e-01
 
Photon flux (15-150 keV)    in 117 sec: 0.541453 ( -0.040625  0.04091 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.92145e-06 ( -3.97168e-07  3.55001e-07 ) ergs/cm2
 
Band function
Time interval is from  -79.728 sec. to   37.272 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.76143   ( -13.0449   -4.3331 )
beta        : -1.54939    ( -0.15935   0.141802 )
Epeak [keV] : 27.5414      ( -9.7915 4.56405 )
Norm@50keV   : 33.4045    ( -33.4047   80.8614 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.05 using 59 PHA bins.
# Reduced chi-squared =          1.001 for     55 degrees of freedom 
# Null hypothesis probability =   4.727035e-01
 
Photon flux (15-150 keV)    in 117 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]    : 15.8299  (  )
R^2/D10^2   : 5.03343E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         116.83 using 59 PHA bins.
# Reduced chi-squared =         2.0497 for     57 degrees of freedom 
# Null hypothesis probability =   5.206173e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.058e-07   4.177e-08
25- 50  1.275e-06   1.296e-07
50-150  2.224e-06   2.767e-07
15-150  3.805e-06   3.258e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-31.2886      -200)
Norm        : 2.24699       (-0.155445     0.155445)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.25 using 59 PHA bins.
# Reduced chi-squared =          1.075 for     57 degrees of freedom 
# Null hypothesis probability =   3.261379e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.547e-07   5.558e-08
25- 50  1.259e-06   1.281e-07
50-150  2.762e-06   6.926e-07
15-150  4.676e-06   8.611e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.86200        (-1.51763      1.65662)
R1^2/D10^2  : 0.290967        (-0.123164      0.24569)
kT2 [keV]   : 43.5920        (-13.3179      45.0924)
R2^2/D10^2  : 1.35901E-03    (-0.00110198   0.00285208)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.99 using 59 PHA bins.
# Reduced chi-squared =         0.9817 for     55 degrees of freedom 
# Null hypothesis probability =   5.132016e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.529e-07   1.238e-07
25- 50  1.327e-06   2.620e-07
50-150  3.096e-06   1.361e-06
15-150  4.976e-06   1.579e-06

Peak spectrum fit

Power-law model
Time interval is from    1.272 sec. to    2.272 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20345     ( -0.235594   0.226052 )
Norm@50keV  : 2.83062E-02    ( -0.003754   0.0037445 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.12 using 59 PHA bins.
# Reduced chi-squared =          1.230 for     57 degrees of freedom 
# Null hypothesis probability =   1.136947e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.32419 ( -0.46543  0.468124 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.86898e-07 ( -3.99374e-08  4.01757e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.272 sec. to    2.272 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.32988     ( -0.295566   0.224929 )
Epeak [keV] : 110.976      ( -9999.36 -9999.36 )
Norm@50keV  : 4.47563E-03    ( -0.00447826   0.00551504 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.39 using 59 PHA bins.
# Reduced chi-squared =          1.239 for     56 degrees of freedom 
# Null hypothesis probability =   1.078242e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.32902 ( -0.47031  0.45798 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.8669e-07 ( -2.069e-08  4.0155e-08 ) ergs/cm2
 
Band function
Time interval is from    1.272 sec. to    2.272 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.52942   ( -8.29447   -4.52942 )
beta        : -1.50981    ( -0.374036   0.333283 )
Epeak [keV] : 36.9822      ( -7.85295 14.5073 )
Norm@50keV   : 131.532    ( -17.1046   2903.96 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.04 using 59 PHA bins.
# Reduced chi-squared =          1.219 for     55 degrees of freedom 
# Null hypothesis probability =   1.279396e-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]    : 16.6419  (-2.99016  4.41538)
R^2/D10^2   : 0.276706  (-0.151154   0.274677)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          86.04 using 59 PHA bins.
# Reduced chi-squared =          1.510 for     57 degrees of freedom 
# Null hypothesis probability =   7.750082e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.570e-08   4.390e-09
25- 50  6.826e-08   1.555e-08
50-150  1.340e-07   3.617e-08
15-150  2.180e-07   4.340e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-40.7482      -200)
Norm        : 14.0701       (-1.89007     1.89007)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.95 using 59 PHA bins.
# Reduced chi-squared =          1.350 for     57 degrees of freedom 
# Null hypothesis probability =   4.031878e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.506e-08   2.000e-08
25- 50  6.744e-08   3.741e-08
50-150  1.479e-07   8.110e-08
15-150  2.504e-07   1.403e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.6161        (-2.184      2.05806)
R1^2/D10^2  : 1.02788        (-0.423105      0.859099)
kT2 [keV]   : 98.8378        (-150.167      -199.363)
R2^2/D10^2  : 1.61408E-03    (-0.000140261   0.00667115)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.85 using 59 PHA bins.
# Reduced chi-squared =          1.125 for     55 degrees of freedom 
# Null hypothesis probability =   2.447841e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.498e-08   1.129e-08
25- 50  7.263e-08   3.435e-08
50-150  1.926e-07   1.588e-07
15-150  2.902e-07   1.914e-07
Plot creation:
Sat Mar 17 10:54:41 EDT 2018