batgrbproduct analysis for trigger=834937

batgrbproduct Analysis for Trigger=834937

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jun  1 04:06:19 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger834937/GCN5_download_cron
======================================================================

  Trigger: 00834937      Segment: 000

  BAT Trigger Time: 549432152   [s; MET]
      Trigger Stop: 549432216   [s; MET]
               UTC: 2018-05-31T04:02:10.971200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 210.507655601767   Dec: 11.9852077526474  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.12
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.12

  Flight Position:   [ source = BAT ]
    RA: 210.507655601767   Dec: 11.9852077526474  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 210.512766079688   Dec: 12.0022353277281  [deg; J2000]  
        { 14h 02m 03.1s , +12d 00' 08.0" }
         +/- 3.55103999538044 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.36253184648442 [arcmin] (formal 1-sigma fit error)
    SNR: 4.97618074011102
 
  Angular difference between Flight and Ground position is 1.064772 arcmin
 
  Partial Coding Fraction: 0.921875    [ including projection effects ]

  Duration
     T90: 62.2079998254776 +/- 15.2713776725853
        Measured from: 1.19200015068054
                   to: 63.3999999761581     [s; relative to TRIGTIME]
     T50: 40.8319998979568 +/- 29.8092324290853
        Measured from: 10.3440001010895
                   to: 51.1759999990463     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 10.0039999485016     
                   to: 11.0039999485016     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.8400000333786     
                   to: 67.0479999780655     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.242709   0.269334  -0.000719   0.056986
           0.054525   0.053674   0.047108   0.041377 [error]
 Peak      0.020707   0.016180   0.006759   0.011437
           0.006771   0.006333   0.005535   0.004864 [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 6.69e-08 7.93e-08 6.79e-08 9.89e-08 2.49e-07 3.13e-07   erg/cm2
              Error 2.18e-08 2.39e-08 3.64e-08 1.17e-07 8.81e-08 1.53e-07   erg/cm2
Peak flux Power-law 1.65e-01 1.22e-01 5.95e-02 4.14e-02 3.66e-01 3.87e-01   ph/cm2/s
              Error 8.95e-02 4.96e-02 4.15e-02 6.53e-02 1.46e-01 1.59e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.49e-08 1.15e-07 4.33e-08 1.21e-09 2.15e-07 2.14e-07   erg/cm2
              Error 2.82e-08 3.65e-08 4.37e-08 1.45e-08 6.55e-08 6.60e-08   erg/cm2
Peak flux Cutoff-PL 1.66e-01 1.22e-01 5.81e-02 3.29e-02 3.65e-01 3.75e-01   ph/cm2/s
              Error 8.97e-02 5.48e-02 1.64e-02 6.51e-02 1.21e-01 2.73e-01   ph/cm2/s
 
Fluence        Band 5.45e-08 1.15e-07 4.31e-08 1.51e-09 2.15e-07 2.13e-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    2.223    0.521    -      -           3.78e-04 1.53e-04   66.810 57
CPL  -1.267    3.893      34.6   11.1      5.42e-02 2.25e+01   61.860 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.030    0.831    -      -           2.40e-03 1.29e-03   55.980 57
CPL  -9.941    0.000      25.2    0.0      2.55e+06 0.00e+00   53.040 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   69.888   -2.840   67.048
T90    62.208    1.192   63.400
T50    40.832   10.344   51.176
Peak    1.000   10.004   11.004

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  210.5128 +12.0022 0.0386   12.7  -85.6       0.5309     5.0  TRIG_00834937       
------------------------------------------
 
Foreground time interval of the image:
 -2.840  67.048 (delta_t =  69.888 [sec])
Background time interval of the image:
-239.000  -2.840 (delta_t = 236.160 [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   -2.840 sec. to   67.048 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.22265     ( -0.471745   0.56941 )
Norm@50keV  : 3.78246E-04    ( -0.000152931   0.000152707 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.81 using 59 PHA bins.
# Reduced chi-squared =          1.172 for     57 degrees of freedom 
# Null hypothesis probability =   1.754954e-01
 
Photon flux (15-150 keV)    in 69.89 sec: 6.33687E-02 ( -0.0175126  0.0175587 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.49197e-07 ( -8.41196e-08  9.20556e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.840 sec. to   67.048 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.26678     ( -5.04602   2.73941 )
Epeak [keV] : 34.5969      ( -12.8271 9.34776 )
Norm@50keV  : 5.42444E-02    ( -0.062222   45.0268 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.86 using 59 PHA bins.
# Reduced chi-squared =          1.105 for     56 degrees of freedom 
# Null hypothesis probability =   2.748513e-01
 
Photon flux (15-150 keV)    in 69.89 sec: 6.08130E-02 ( -0.0168915  0.0169454 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.14635e-07 ( -6.09979e-08  6.99557e-08 ) ergs/cm2
 
Band function
Time interval is from   -2.840 sec. to   67.048 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.22915   ( -2.70656   -1.27016 )
beta        : -9.37167    ( 9.37167   19.3678 )
Epeak [keV] : 34.6171      ( -7.67094 9.32644 )
Norm@50keV   : 5.13016E-02    ( -0.0619146   8.07792 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.87 using 59 PHA bins.
# Reduced chi-squared =          1.125 for     55 degrees of freedom 
# Null hypothesis probability =   2.443298e-01
 
Photon flux (15-150 keV)    in 69.89 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.15079e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.98855  (-1.88047  2.23872)
R^2/D10^2   : 4.96204E-02  (-0.0293161   0.0730157)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.71 using 59 PHA bins.
# Reduced chi-squared =          1.083 for     57 degrees of freedom 
# Null hypothesis probability =   3.115139e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.452e-08   3.137e-08
25- 50  1.156e-07   6.145e-08
50-150  4.394e-08   3.232e-08
15-150  2.141e-07   9.870e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 40.8655       (-18.0434      45.1335)
Norm        : 0.418765       (-0.154631     0.252744)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.35 using 59 PHA bins.
# Reduced chi-squared =          1.129 for     57 degrees of freedom 
# Null hypothesis probability =   2.348058e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.769e-08   3.052e-08
25- 50  8.987e-08   5.103e-08
50-150  7.116e-08   5.444e-08
15-150  2.287e-07   1.251e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.60830        (-2.58918      -2.58918)
R1^2/D10^2  : 2.07578        (-2.25718      -2.25718)
kT2 [keV]   : 9.45458        (-2.18929      -9.42258)
R2^2/D10^2  : 3.85476E-02    (-0.0390511   0.0757124)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.35 using 59 PHA bins.
# Reduced chi-squared =          1.115 for     55 degrees of freedom 
# Null hypothesis probability =   2.589007e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.877e-08   3.064e-08
25- 50  1.109e-07   6.559e-08
50-150  4.869e-08   3.320e-08
15-150  2.184e-07   1.321e-07

Peak spectrum fit

Power-law model
Time interval is from   10.004 sec. to   11.004 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.03035     ( -0.776503   0.885191 )
Norm@50keV  : 2.40256E-03    ( -0.00130933   0.00126861 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.98 using 59 PHA bins.
# Reduced chi-squared =         0.9821 for     57 degrees of freedom 
# Null hypothesis probability =   5.132982e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.365507 ( -0.146215  0.146228 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.21959e-08 ( -1.05209e-08  1.19581e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   10.004 sec. to   11.004 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.94113     (     )
Epeak [keV] : 25.1741      (   )
Norm@50keV  : 2.55067E+06    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.04 using 59 PHA bins.
# Reduced chi-squared =         0.9472 for     56 degrees of freedom 
# Null hypothesis probability =   5.875022e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.365086 0.325197 0.324493 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.72851e-16 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   10.004 sec. to   11.004 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -7.42012   -5 )
beta        : -3.30561    ( 3.31199   1.58564 )
Epeak [keV] : 25.3811      ( -10.0969 7.00569 )
Norm@50keV   : 475.734    ( -176.318   9977.44 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.19 using 59 PHA bins.
# Reduced chi-squared =         0.9672 for     55 degrees of freedom 
# Null hypothesis probability =   5.439509e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.21665e-09 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.65464  (-1.92284  3.33503)
R^2/D10^2   : 0.878133  (-0.878125   2.81834)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.13 using 59 PHA bins.
# Reduced chi-squared =         0.9672 for     57 degrees of freedom 
# Null hypothesis probability =   5.454351e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.909e-09   3.913e-09
25- 50  7.322e-09   4.735e-09
50-150  1.007e-09   9.750e-10
15-150  1.424e-08   9.320e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 44.1566       (-44.1788      -44.1788)
Norm        : 2.21435       (-1.22639     3.40771)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.03 using 59 PHA bins.
# Reduced chi-squared =         0.9829 for     57 degrees of freedom 
# Null hypothesis probability =   5.115823e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.244e-09   3.461e-09
25- 50  7.187e-09   4.956e-09
50-150  6.175e-09   5.170e-09
15-150  1.861e-08   1.351e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.13322        (-1.69885      2.24723)
R1^2/D10^2  : 1.16155        (-0.798009      3.32597)
kT2 [keV]   : 200.000        (-200      -200)
R2^2/D10^2  : 5.20905E-05    (-4.9072e-05   0.000419021)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.11 using 59 PHA bins.
#Fit statistic : Chi-Squared =          52.09 using 59 PHA bins.
# Reduced chi-squared =         0.9474 for     55 degrees of freedom 
# Reduced chi-squared =         0.9470 for     55 degrees of freedom 
# Null hypothesis probability =   5.858955e-01
# Null hypothesis probability =   5.866729e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.887e-09   3.692e-09
25- 50  7.067e-09   4.598e-09
50-150  1.378e-08   1.109e-09
15-150  2.673e-08   9.405e-09
Plot creation:
Fri Jun  1 04:09:52 EDT 2018