batgrbproduct analysis for trigger=843211

batgrbproduct Analysis for Trigger=843211

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jun 21 19:29:45 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger843211/GCN5_download_cron
======================================================================

  Trigger: 00843211      Segment: 000

  BAT Trigger Time: 551202658.304   [s; MET]
      Trigger Stop: 551202659.328   [s; MET]
               UTC: 2018-06-20T15:50:37.167500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 357.516541175609   Dec: -57.9572576503267  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    16.36
     Image Trigger?:     NO
     Rate S/N Ratio:     59.042357676502  [ if not an image trigger ]
     Image S/N Ratio:    16.36

  Flight Position:   [ source = BAT ]
    RA: 357.516541175609   Dec: -57.9572576503267  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 357.513904796598   Dec: -57.9537536146624  [deg; J2000]  
        { 23h 50m 03.3s , -57d 57' 13.5" }
         +/- 0.795682862096447 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.28488682514202 [arcmin] (formal 1-sigma fit error)
    SNR: 42.1617252855195
 
  Angular difference between Flight and Ground position is 0.226375 arcmin
 
  Partial Coding Fraction: 0.78125    [ including projection effects ]

  Duration
     T90: 198.803999900818 +/- 27.4443117973296
        Measured from: -93.191999912262
                   to: 105.611999988556     [s; relative to TRIGTIME]
     T50: 43.1799999475479 +/- 3.5178470475007
        Measured from: -2.7279999256134
                   to: 40.4520000219345     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.332000017166138     
                   to: 0.667999982833862     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -159.37600004673     
                   to: 162.427999973297     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     4.563281   6.259467   4.578315   1.094220
           0.120394   0.120896   0.103724   0.088821 [error]
 Peak      0.078855   0.160658   0.163507   0.052668
           0.008319   0.009438   0.009204   0.006771 [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 1.54e-06 2.66e-06 3.50e-06 9.38e-06 1.03e-05 1.71e-05   erg/cm2
              Error 7.75e-08 7.68e-08 1.09e-07 6.67e-07 2.65e-07 7.22e-07   erg/cm2
Peak flux Power-law 8.68e-01 1.12e+00 1.05e+00 1.73e+00 3.61e+00 4.76e+00   ph/cm2/s
              Error 1.08e-01 8.49e-02 7.05e-02 2.50e-01 2.30e-01 3.12e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.43e-06 2.71e-06 3.59e-06 6.30e-06 1.00e-05 1.40e-05   erg/cm2
              Error 1.00e-07 8.33e-08 1.21e-07 1.52e-06 3.00e-07 1.54e-06   erg/cm2
Peak flux Cutoff-PL 8.08e-01 1.13e+00 1.08e+00 1.33e+00 3.58e+00 4.35e+00   ph/cm2/s
              Error 1.33e-01 9.07e-02 8.90e-02 4.66e-01 2.36e-01 5.40e-01   ph/cm2/s
 
Fluence        Band 1.37e-06 2.75e-06 3.50e-06 8.38e-06 1.00e-05 1.60e-05   erg/cm2
              Error -------- -------- 1.49e-07 -------- 2.93e-07 --------   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    1.604    0.048    -      -           3.43e-03 8.55e-05   65.760 57
CPL   1.296    0.196     123.9   68.3      4.75e-03 9.75e-04   58.090 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.091    0.106    -      -           3.12e-02 1.93e-03   55.200 57
CPL   0.818    0.323     250.7    0.0      4.12e-02 1.66e-02   53.830 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: 165.312000 sec.
T50 in the 50-300 keV band: 34.944000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  321.804 -159.376  162.428
T90   198.804  -93.192  105.612
T50    43.180   -2.728   40.452
Peak    1.000   -0.332    0.668

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  357.5139 -57.9538 0.0046   30.4 -176.7       9.8801    42.2  TRIG_00843211       
------------------------------------------
 
Foreground time interval of the image:
-158.203 -54.351 (delta_t = 103.852 [sec])
-53.304  14.897 (delta_t =  68.201 [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
-159.376000 -54.351300
-53.304000 56.906000
57.696000 162.428000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60395     ( -0.0476707   0.0477024 )
Norm@50keV  : 3.42777E-03    ( -8.54922e-05   8.5486e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.76 using 59 PHA bins.
# Reduced chi-squared =          1.154 for     57 degrees of freedom 
# Null hypothesis probability =   1.995608e-01
 
Photon flux (15-150 keV)    in 320 sec: 0.441025 ( -0.0124888  0.0125362 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.02533e-05 ( -2.65074e-07  2.6534e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-159.376000 -54.351300
-53.304000 56.906000
57.696000 162.428000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29632     ( -0.200345   0.191794 )
Epeak [keV] : 123.945      ( -28.5345 108.14 )
Norm@50keV  : 4.75243E-03    ( -0.000855176   0.00109563 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.09 using 59 PHA bins.
# Reduced chi-squared =          1.037 for     56 degrees of freedom 
# Null hypothesis probability =   3.983209e-01
 
Photon flux (15-150 keV)    in 320 sec: 0.430111 ( -0.013982  0.014056 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0034e-05 ( -3.00288e-07  2.9888e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-159.376000 -54.351300
-53.304000 56.906000
57.696000 162.428000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.834319   ( -0.63789   1.4573 )
beta        : -1.71468    ( 1.715   0.090504 )
Epeak [keV] : 61.5130      ( -27.665 147.656 )
Norm@50keV   : 9.16651E-03    ( -0.00488506   0.0930322 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.64 using 59 PHA bins.
# Reduced chi-squared =          1.048 for     55 degrees of freedom 
# Null hypothesis probability =   3.776929e-01
 
Photon flux (15-150 keV)    in 320 sec: 0.426389 ( 6.57361  -0.015166 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.00322e-05 ( -1.003e-05  -2.93312e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.8729  (  )
R^2/D10^2   : 3.81994E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         363.68 using 59 PHA bins.
# Reduced chi-squared =         6.3804 for     57 degrees of freedom 
# Null hypothesis probability =   3.028124e-46
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.379e-07   3.152e-08
25- 50  2.666e-06   9.056e-08
50-150  4.680e-06   1.952e-07
15-150  7.984e-06   2.400e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 191.736       (-25.5594      -191.736)
Norm        : 1.77025       (-0.049456     0.0543569)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.05 using 59 PHA bins.
# Reduced chi-squared =          1.018 for     57 degrees of freedom 
# Null hypothesis probability =   4.363382e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.418e-06   7.024e-08
25- 50  2.715e-06   1.546e-07
50-150  5.876e-06   1.310e-06
15-150  1.001e-05   1.427e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.58402        (-0.700684      0.737806)
R1^2/D10^2  : 0.342677        (-0.0913532      0.137102)
kT2 [keV]   : 26.8763        (-2.38909      3.0936)
R2^2/D10^2  : 4.59037E-03    (-0.00151973   0.00194902)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.42 using 59 PHA bins.
# Reduced chi-squared =          1.117 for     55 degrees of freedom 
# Null hypothesis probability =   2.570600e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.270e-06   9.904e-08
25- 50  2.781e-06   1.517e-07
50-150  5.882e-06   4.496e-07
15-150  9.933e-06   5.264e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.332 sec. to    0.668 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09127     ( -0.106663   0.105495 )
Norm@50keV  : 3.11672E-02    ( -0.00192722   0.00192347 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.20 using 59 PHA bins.
# Reduced chi-squared =         0.9684 for     57 degrees of freedom 
# Null hypothesis probability =   5.430407e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.61218 ( -0.23023  0.23059 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.26775e-07 ( -2.17027e-08  2.17537e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.332 sec. to    0.668 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.817851     ( -0.4337   0.211827 )
Epeak [keV] : 250.702      ( -250.702 -250.702 )
Norm@50keV  : 4.12476E-02    ( -0.0112592   0.0219942 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.83 using 59 PHA bins.
# Reduced chi-squared =         0.9613 for     56 degrees of freedom 
# Null hypothesis probability =   5.573500e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.57529 ( -0.23612  0.23636 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.23776e-07 ( -2.2492e-08  2.239e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.332 sec. to    0.668 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.818009   ( -1.41968   -1.41968 )
beta        : -9.99996    ( 9.99968   19.9997 )
Epeak [keV] : 250.357      ( -118.17 -250.355 )
Norm@50keV   : 4.12584E-02    ( -0.0128564   0.0220213 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.83 using 59 PHA bins.
# Reduced chi-squared =         0.9788 for     55 degrees of freedom 
# Null hypothesis probability =   5.192940e-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]    : 21.5504  (-1.75102  1.96329)
R^2/D10^2   : 0.135879  (-0.0331275   0.0427174)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         100.83 using 59 PHA bins.
# Reduced chi-squared =         1.7689 for     57 degrees of freedom 
# Null hypothesis probability =   3.093973e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.179e-08   1.560e-09
25- 50  6.157e-08   5.615e-09
50-150  2.135e-07   2.175e-08
15-150  2.868e-07   2.170e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-9.24994      -200)
Norm        : 14.9283       (-0.948452     0.948452)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         106.74 using 59 PHA bins.
# Reduced chi-squared =         1.8726 for     57 degrees of freedom 
# Null hypothesis probability =   7.296328e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.718e-08   2.525e-09
25- 50  7.153e-08   6.410e-09
50-150  1.569e-07   4.252e-08
15-150  2.656e-07   4.165e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.17193        (-1.74245      2.12129)
R1^2/D10^2  : 1.63601        (-0.817871      1.93759)
kT2 [keV]   : 33.4492        (-5.51391      9.68812)
R2^2/D10^2  : 2.86069E-02    (-0.0157415   0.0234646)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.85 using 59 PHA bins.
# Reduced chi-squared =         0.9427 for     55 degrees of freedom 
# Null hypothesis probability =   5.958418e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.473e-08   7.375e-09
25- 50  6.648e-08   1.648e-08
50-150  2.361e-07   6.195e-08
15-150  3.273e-07   7.920e-08
Plot creation:
Thu Jun 21 19:34:16 EDT 2018