batgrbproduct analysis for trigger=846868

batgrbproduct Analysis for Trigger=846868

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Jul 10 10:25:27 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger846868/GCN5_download_cron
======================================================================

  Trigger: 00846868      Segment: 000

  BAT Trigger Time: 552826341.504   [s; MET]
      Trigger Stop: 552826349.696   [s; MET]
               UTC: 2018-07-09T10:52:00.268380    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 38.1190695176549   Dec: 60.3717433056486  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.13
     Image Trigger?:     NO
     Rate S/N Ratio:     15.556349186104  [ if not an image trigger ]
     Image S/N Ratio:    9.13

  Flight Position:   [ source = BAT ]
    RA: 38.1190695176549   Dec: 60.3717433056486  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 38.0862068166974   Dec: 60.3331729277872  [deg; J2000]  
        { 02h 32m 20.7s , +60d 19' 59.4" }
         +/- 1.56404473892175 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.663124535574664 [arcmin] (formal 1-sigma fit error)
    SNR: 16.0553420804241
 
  Angular difference between Flight and Ground position is 2.511364 arcmin
 
  Partial Coding Fraction: 0.8125    [ including projection effects ]

  Duration
     T90: 215.071999907494 +/- 28.8523979094298
        Measured from: 2.84800016880035
                   to: 217.920000076294     [s; relative to TRIGTIME]
     T50: 133.791999936104 +/- 84.9068301773876
        Measured from: 11.0320001840591
                   to: 144.824000120163     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.73199999332428     
                   to: 9.73199999332428     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.544000029563904     
                   to: 243.460000038147     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.627458   0.732654   0.675016   0.140656
           0.094365   0.097350   0.085901   0.078402 [error]
 Peak      0.018102   0.024548   0.028868   0.011033
           0.007027   0.006986   0.006393   0.005653 [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 1.66e-07 3.29e-07 5.07e-07 1.71e-06 1.42e-06 2.72e-06   erg/cm2
              Error 3.77e-08 4.44e-08 8.59e-08 6.47e-07 2.09e-07 7.08e-07   erg/cm2
Peak flux Power-law 1.32e-01 1.77e-01 1.76e-01 3.15e-01 5.88e-01 8.01e-01   ph/cm2/s
              Error 7.49e-02 6.07e-02 5.08e-02 2.12e-01 1.61e-01 2.36e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.67e-07 3.30e-07 5.06e-07 1.69e-06 1.42e-06 2.69e-06   erg/cm2
              Error 3.84e-08 4.62e-08 8.58e-08 8.89e-07 2.09e-07 7.13e-07   erg/cm2
Peak flux Cutoff-PL 1.28e-01 1.78e-01 1.78e-01 2.88e-01 5.85e-01 7.71e-01   ph/cm2/s
              Error 8.55e-02 6.29e-02 5.75e-02 2.95e-01 1.65e-01 2.86e-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    1.375    0.234    -      -           6.01e-04 7.76e-05   46.060 57
CPL   1.376    0.235    9999.4    0.0      6.02e-04 5.58e-04   46.070 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.011    0.506    -      -           5.10e-03 1.37e-03   63.440 57
CPL   0.924    0.569     734.8    0.0      5.56e-03 1.40e-02   63.430 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: 34.368000 sec.
T50 in the 50-300 keV band: 13.248000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  242.916    0.544  243.460
T90   215.072    2.848  217.920
T50   133.792   11.032  144.824
Peak    1.000    8.732    9.732

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   38.0862 +60.3332 0.0120   20.0 -117.5       1.4840    16.1  TRIG_00846868       
------------------------------------------
 
Foreground time interval of the image:
  0.544  49.597 (delta_t =  49.053 [sec])
Background time interval of the image:
-239.504 -117.448 (delta_t = 122.056 [sec])
-116.504   0.544 (delta_t = 117.048 [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    0.544 sec. to  243.460 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37486     ( -0.233737   0.233432 )
Norm@50keV  : 6.01143E-04    ( -7.78393e-05   7.73397e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.06 using 59 PHA bins.
# Reduced chi-squared =         0.8080 for     57 degrees of freedom 
# Null hypothesis probability =   8.497234e-01
 
Photon flux (15-150 keV)    in 242.9 sec: 7.28012E-02 ( -0.00933643  0.00935 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.41837e-06 ( -2.07488e-07  2.1063e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.544 sec. to  243.460 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37597     ( -0.239318   0.230993 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 6.02016E-04    ( -0.000510157   0.000605327 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.07 using 59 PHA bins.
# Reduced chi-squared =         0.8226 for     56 degrees of freedom 
# Null hypothesis probability =   8.255313e-01
 
Photon flux (15-150 keV)    in 242.9 sec: 7.28226E-02 ( -0.0093812  0.0093013 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.41581e-06 ( -2.07279e-07  2.10325e-07 ) ergs/cm2
 
Band function
Time interval is from    0.544 sec. to  243.460 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.83877   ( -4.83877   -4.83877 )
beta        : -1.44379    ( -0.302096   0.260282 )
Epeak [keV] : 24.1381      ( -24.1381 6.66117 )
Norm@50keV   : 53.9090    ( -6.79445   268555 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.69 using 59 PHA bins.
# Reduced chi-squared =         0.8307 for     55 degrees of freedom 
# Null hypothesis probability =   8.103470e-01
 
Photon flux (15-150 keV)    in 242.9 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]    : 17.0427  (-3.40634  4.29141)
R^2/D10^2   : 5.25097E-03  (-0.00520569   0.00594078)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.31 using 59 PHA bins.
# Reduced chi-squared =          1.216 for     57 degrees of freedom 
# Null hypothesis probability =   1.271158e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.540e-08   2.074e-08
25- 50  3.343e-07   6.595e-08
50-150  6.937e-07   1.831e-07
15-150  1.103e-06   2.318e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-59.6595      -200)
Norm        : 0.298303       (-0.0379145     0.0379145)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.46 using 59 PHA bins.
# Reduced chi-squared =         0.8502 for     57 degrees of freedom 
# Null hypothesis probability =   7.823350e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.804e-07   1.012e-07
25- 50  3.471e-07   1.918e-07
50-150  7.612e-07   4.139e-07
15-150  1.289e-06   7.173e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.39626        (-1.56456      1.99432)
R1^2/D10^2  : 0.111237        (-0.0696417      0.213239)
kT2 [keV]   : 32.4739        (-8.95993      21.0487)
R2^2/D10^2  : 5.49170E-04    (-0.00040989   0.000966953)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.72 using 59 PHA bins.
# Reduced chi-squared =         0.7767 for     55 degrees of freedom 
# Null hypothesis probability =   8.861812e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.810e-07   9.321e-08
25- 50  3.162e-07   1.314e-07
50-150  9.796e-07   5.329e-07
15-150  1.477e-06   6.569e-07

Peak spectrum fit

Power-law model
Time interval is from    8.732 sec. to    9.732 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.01119     ( -0.525557   0.48564 )
Norm@50keV  : 5.10117E-03    ( -0.00137742   0.00135702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.44 using 59 PHA bins.
# Reduced chi-squared =          1.113 for     57 degrees of freedom 
# Null hypothesis probability =   2.597719e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.587746 ( -0.160119  0.16125 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.50802e-08 ( -1.58249e-08  1.58255e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.732 sec. to    9.732 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.923717     ( -2.05782   -0.920427 )
Epeak [keV] : 734.796      ( -720.385 -720.385 )
Norm@50keV  : 5.55645E-03    ( -0.00174861   0.0262306 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.43 using 59 PHA bins.
# Reduced chi-squared =          1.133 for     56 degrees of freedom 
# Null hypothesis probability =   2.309112e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.584920 ( -0.166284  0.163495 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.47661e-08 ( -1.62324e-08  1.60791e-08 ) ergs/cm2
 
Band function
Time interval is from    8.732 sec. to    9.732 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.00516   ( -0.693425   1.5152 )
beta        : -10.0000    ( 10   10 )
Epeak [keV] : 9997.49      ( -9917.63 -9997.49 )
Norm@50keV   : 5.13078E-03    ( -0.00135455   0.0267998 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.44 using 59 PHA bins.
# Reduced chi-squared =          1.153 for     55 degrees of freedom 
# Null hypothesis probability =   2.032957e-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]    : 26.0789  (-8.55768  15.0719)
R^2/D10^2   : 1.22663E-02  (-0.0122531   0.0293895)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.38 using 59 PHA bins.
# Reduced chi-squared =          1.165 for     57 degrees of freedom 
# Null hypothesis probability =   1.850132e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.417e-09   9.000e-10
25- 50  8.207e-09   4.849e-09
50-150  4.109e-08   2.557e-08
15-150  5.071e-08   2.995e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-88.4305      -200)
Norm        : 2.41528       (-0.663531     0.663531)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.92 using 59 PHA bins.
# Reduced chi-squared =          1.174 for     57 degrees of freedom 
# Null hypothesis probability =   1.730678e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.014e-09   3.720e-09
25- 50  1.157e-08   6.865e-09
50-150  2.537e-08   1.547e-08
15-150  4.296e-08   2.664e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.40269        (-2.79394      6.09706)
R1^2/D10^2  : 0.691579        (-0.684414      5.24853)
kT2 [keV]   : 36.3312        (-13.4488      55.8147)
R2^2/D10^2  : 4.13827E-03    (-0.00385801   0.00813375)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.64 using 59 PHA bins.
# Reduced chi-squared =          1.121 for     55 degrees of freedom 
# Null hypothesis probability =   2.507608e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.866e-09   3.198e-09
25- 50  9.700e-09   5.340e-09
50-150  4.270e-08   2.664e-08
15-150  5.726e-08   3.221e-08
Plot creation:
Tue Jul 10 10:29:49 EDT 2018