batgrbproduct analysis for trigger=797441

batgrbproduct Analysis for Trigger=797441

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Dec 17 06:16:12 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger797441/GCN5_download_cron
======================================================================

  Trigger: 00797441      Segment: 000

  BAT Trigger Time: 535086439.616   [s; MET]
      Trigger Stop: 535086442.688   [s; MET]
               UTC: 2017-12-16T03:06:59.453420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 212.077708008229   Dec: -50.4731225924403  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.36
     Image Trigger?:     NO
     Rate S/N Ratio:     11.0453610171873  [ if not an image trigger ]
     Image S/N Ratio:    7.36

  Flight Position:   [ source = BAT ]
    RA: 212.077708008229   Dec: -50.4731225924403  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 212.012613922809   Dec: -50.5003280960833  [deg; J2000]  
        { 14h 08m 03.0s , -50d 30' 01.2" }
         +/- 2.05026080142326 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.955598766923174 [arcmin] (formal 1-sigma fit error)
    SNR: 10.9062838434715
 
  Angular difference between Flight and Ground position is 2.973163 arcmin
 
  Partial Coding Fraction: 0.6328125    [ including projection effects ]

  Duration
     T90: 29.9519999623299 +/- 7.45977581687936
        Measured from: 0.512000143527985
                   to: 30.4640001058578     [s; relative to TRIGTIME]
     T50: 13.5040000081062 +/- 8.59818027952436
        Measured from: 3.13600009679794
                   to: 16.6400001049042     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.05199998617172     
                   to: 4.05199998617172     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.448000013828278     
                   to: 33.472000002861     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.217937   0.360835   0.194082   0.000115
           0.047832   0.049653   0.043312   0.038181 [error]
 Peak      0.019944   0.041995   0.026754   0.009019
           0.008525   0.008997   0.007740   0.006629 [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 7.49e-08 1.27e-07 1.64e-07 4.27e-07 4.83e-07 7.93e-07   erg/cm2
              Error 2.01e-08 2.28e-08 4.15e-08 2.20e-07 1.00e-07 2.60e-07   erg/cm2
Peak flux Power-law 2.41e-01 2.69e-01 2.14e-01 2.82e-01 8.29e-01 1.01e+00   ph/cm2/s
              Error 1.10e-01 7.63e-02 6.25e-02 1.75e-01 2.12e-01 2.56e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.71e-08 1.47e-07 1.61e-07 8.15e-08 4.31e-07 4.56e-07   erg/cm2
              Error 2.23e-08 3.31e-08 4.95e-08 2.44e-07 1.12e-07 2.81e-07   erg/cm2
Peak flux Cutoff-PL 2.39e-01 2.70e-01 2.15e-01 2.64e-01 8.27e-01 9.89e-01   ph/cm2/s
              Error 1.15e-01 8.54e-02 6.93e-02 2.52e-01 1.61e-01 3.06e-01   ph/cm2/s
 
Fluence        Band 6.52e-08 1.53e-07 1.50e-07 2.61e-07 4.55e-07 6.30e-07   erg/cm2
              Error 2.52e-08 -------- -------- -------- 1.30e-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    1.631    0.298    -      -           1.53e-03 2.96e-04   72.030 57
CPL   0.467    1.608      57.2  -20.4      6.91e-03 4.85e-02   69.680 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.329    0.437    -      -           6.91e-03 1.71e-03   44.980 57
CPL   1.276    3.288     704.3    0.0      7.34e-03 3.57e-02   44.980 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: 6.528000 sec.
T50 in the 50-300 keV band: 3.136000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   33.920   -0.448   33.472
T90    29.952    0.512   30.464
T50    13.504    3.136   16.640
Peak    1.000    3.052    4.052

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  212.0126 -50.5003 0.0176   29.4  -43.3       1.0238    10.9  TRIG_00797441       
------------------------------------------
 
Foreground time interval of the image:
 -0.448  33.472 (delta_t =  33.920 [sec])
Background time interval of the image:
-239.616  -0.448 (delta_t = 239.168 [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   -0.448 sec. to   33.472 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63103     ( -0.293453   0.302658 )
Norm@50keV  : 1.52856E-03    ( -0.000298575   0.000293379 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.03 using 59 PHA bins.
# Reduced chi-squared =          1.264 for     57 degrees of freedom 
# Null hypothesis probability =   8.670600e-02
 
Photon flux (15-150 keV)    in 33.92 sec: 0.198362 ( -0.0355573  0.0355842 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.83173e-07 ( -9.8869e-08  1.01496e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.448 sec. to   33.472 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.466796     ( -1.95219   1.26294 )
Epeak [keV] : 57.2041      ( -16.3727 -57.2013 )
Norm@50keV  : 6.91386E-03    ( -0.00691506   0.0900377 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.68 using 59 PHA bins.
# Reduced chi-squared =          1.244 for     56 degrees of freedom 
# Null hypothesis probability =   1.034287e-01
 
Photon flux (15-150 keV)    in 33.92 sec: 0.191044 ( -0.036339  0.036477 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.30842e-07 ( -1.07309e-07  1.16525e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.448 sec. to   33.472 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.496423   ( -0.856387   1.20403 )
beta        : -10.00000    ( 10   1.12549e-08 )
Epeak [keV] : 57.6267      ( -16.3174 -57.6267 )
Norm@50keV   : 6.65151E-03    ( -0.00116955   0.0906029 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.68 using 59 PHA bins.
# Reduced chi-squared =          1.267 for     55 degrees of freedom 
# Null hypothesis probability =   8.785098e-02
 
Photon flux (15-150 keV)    in 33.92 sec: 0.191786 ( 6.80821  -0.035413 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.55261e-07 ( -4.55023e-07  -1.56863e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.7315  (-2.1738  2.8707)
R^2/D10^2   : 5.48012E-02  (-0.0304179   0.061681)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.76 using 59 PHA bins.
# Reduced chi-squared =          1.276 for     57 degrees of freedom 
# Null hypothesis probability =   7.789448e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.399e-08   1.889e-08
25- 50  1.654e-07   4.874e-08
50-150  1.348e-07   5.778e-08
15-150  3.542e-07   9.964e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 136.530       (-67.6443      -135.083)
Norm        : 0.838217       (-0.163131     0.220683)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.62 using 59 PHA bins.
# Reduced chi-squared =          1.239 for     57 degrees of freedom 
# Null hypothesis probability =   1.060277e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.355e-08   4.159e-08
25- 50  1.344e-07   7.464e-08
50-150  2.548e-07   1.602e-07
15-150  4.627e-07   2.712e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.17848        (-3.28418      3.53486)
R1^2/D10^2  : 0.144693        (-0.0884356      0.398947)
kT2 [keV]   : 25.4104        (-22.4331      -27.5491)
R2^2/D10^2  : 1.84865E-03    (-0.0014263   0.010183)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.14 using 59 PHA bins.
# Reduced chi-squared =          1.239 for     55 degrees of freedom 
# Null hypothesis probability =   1.097976e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.729e-08   4.087e-08
25- 50  1.495e-07   9.018e-08
50-150  2.214e-07   1.322e-07
15-150  4.382e-07   2.259e-07

Peak spectrum fit

Power-law model
Time interval is from    3.052 sec. to    4.052 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32887     ( -0.44247   0.430821 )
Norm@50keV  : 6.90797E-03    ( -0.00171051   0.00170869 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.98 using 59 PHA bins.
# Reduced chi-squared =         0.7891 for     57 degrees of freedom 
# Null hypothesis probability =   8.755180e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.828678 ( -0.211887  0.213049 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.77937e-08 ( -1.82482e-08  1.85064e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    3.052 sec. to    4.052 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27551     ( -2.05621   4.51929 )
Epeak [keV] : 704.287      ( -714.492 -714.492 )
Norm@50keV  : 7.34441E-03    ( -0.00209978   0.0692757 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.98 using 59 PHA bins.
# Reduced chi-squared =         0.8031 for     56 degrees of freedom 
# Null hypothesis probability =   8.543095e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.827237 ( -0.108561  0.213553 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.76139e-08 ( -2.00098e-08  9.4588e-09 ) ergs/cm2
 
Band function
Time interval is from    3.052 sec. to    4.052 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.164738   ( 0.696579   0.696579 )
beta        : -1.48729    ( 1.45421   0.552037 )
Epeak [keV] : 57.8858      ( -57.5263 142.566 )
Norm@50keV   : 3.48558E-02    ( -0.0357762   241.55 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.76 using 59 PHA bins.
# Reduced chi-squared =         0.8139 for     55 degrees of freedom 
# Null hypothesis probability =   8.362856e-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]    : 16.0556  (-4.67155  7.95691)
R^2/D10^2   : 7.66314E-02  (-0.0568937   0.176089)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.14 using 59 PHA bins.
# Reduced chi-squared =         0.8621 for     57 degrees of freedom 
# Null hypothesis probability =   7.610583e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.081e-09   2.568e-09
25- 50  1.723e-08   9.621e-09
50-150  3.108e-08   1.889e-08
15-150  5.238e-08   2.764e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-103.422      -199.363)
Norm        : 3.45168       (-0.860507     0.860506)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.78 using 59 PHA bins.
# Reduced chi-squared =         0.8032 for     57 degrees of freedom 
# Null hypothesis probability =   8.565536e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.595e-09   5.215e-09
25- 50  1.653e-08   9.955e-09
50-150  3.626e-08   2.143e-08
15-150  6.139e-08   3.648e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.93987        (-5.65837      5.928)
R1^2/D10^2  : 0.305640        (-0.241243      0.427473)
kT2 [keV]   : 58.3870        (-58.3869      -58.387)
R2^2/D10^2  : 1.05670E-03    (-0.000925971   0.00796158)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.36 using 59 PHA bins.
# Reduced chi-squared =         0.8066 for     55 degrees of freedom 
# Null hypothesis probability =   8.469163e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.485e-09   4.174e-09
25- 50  1.772e-08   1.083e-08
50-150  4.422e-08   2.315e-08
15-150  6.843e-08   3.404e-08
Plot creation:
Sun Dec 17 06:20:45 EST 2017