batgrbproduct analysis for trigger=791201

batgrbproduct Analysis for Trigger=791201

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Nov 21 10:25:21 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger791201/GCN5_download_cron
======================================================================

  Trigger: 00791201      Segment: 000

  BAT Trigger Time: 532876822.528   [s; MET]
      Trigger Stop: 532876822.784   [s; MET]
               UTC: 2017-11-20T13:20:02.497620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 163.78729657664   Dec: 22.4495879527507  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.59
     Image Trigger?:     NO
     Rate S/N Ratio:     121.482509029078  [ if not an image trigger ]
     Image S/N Ratio:    15.59

  Flight Position:   [ source = BAT ]
    RA: 163.78729657664   Dec: 22.4495879527507  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 163.774315474485   Dec: 22.4606025478875  [deg; J2000]  
        { 10h 55m 05.8s , +22d 27' 38.2" }
         +/- 1.21726212675524 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.563977973359772 [arcmin] (formal 1-sigma fit error)
    SNR: 22.9689467148025
 
  Angular difference between Flight and Ground position is 0.977183 arcmin
 
  Partial Coding Fraction: 0.1484375    [ including projection effects ]

  Duration
     T90: 64 +/- 16
        Measured from: -15.5279998779297
                   to: 48.4720001220703     [s; relative to TRIGTIME]
     T50: 32 +/- 16
        Measured from: 0.472000122070312
                   to: 32.4720001220703     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 39.972000002861     
                   to: 40.972000002861     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.527999997139     
                   to: 64.472000002861     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.013253   4.603348   3.729931   1.084553
           0.129421   0.140957   0.127269   0.109060 [error]
 Peak      0.286638   0.443339   0.296232   0.067467
           0.012093   0.014251   0.012326   0.007950 [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 1.41e-06 2.35e-06 2.96e-06 7.45e-06 8.80e-06 1.42e-05   erg/cm2
              Error 9.39e-08 9.35e-08 1.30e-07 7.12e-07 3.23e-07 7.95e-07   erg/cm2
Peak flux Power-law 4.73e+00 3.82e+00 2.09e+00 1.67e+00 1.14e+01 1.23e+01   ph/cm2/s
              Error 3.19e-01 1.62e-01 1.05e-01 1.65e-01 4.93e-01 4.97e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.22e-06 2.44e-06 3.14e-06 3.84e-06 8.56e-06 1.06e-05   erg/cm2
              Error 1.21e-07 1.05e-07 1.55e-07 1.08e-06 3.43e-07 1.11e-06   erg/cm2
Peak flux Cutoff-PL 3.92e+00 4.09e+00 2.28e+00 8.02e-01 1.08e+01 1.11e+01   ph/cm2/s
              Error 3.99e-01 1.93e-01 1.29e-01 2.02e-01 5.18e-01 5.72e-01   ph/cm2/s
 
Fluence        Band 1.22e-06 2.43e-06 3.13e-06 3.93e-06 8.56e-06 1.07e-05   erg/cm2
              Error -------- -------- -------- -------- 3.39e-07 --------   erg/cm2
Peak flux      Band 3.73e+00 4.17e+00 2.22e+00 1.10e+00 1.07e+01 1.12e+01   ph/cm2/s
              Error 4.38e-01 2.12e-01 1.34e-01 -------- 5.29e-01 5.78e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.665    0.063    -      -           1.18e-02 4.23e-04   70.860 57
CPL   1.059    0.281      86.0   19.0      2.24e-02 6.63e-03   55.570 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.873    0.067    -      -           8.02e-02 3.27e-03   70.210 57
CPL   0.971    0.330      59.2    6.2      2.21e-01 8.41e-02   43.850 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: 43.712000 sec.
T50 in the 50-300 keV band: 38.912000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   80.000  -15.528   64.472
T90    64.000  -15.528   48.472
T50    32.000    0.472   32.472
Peak    1.000   39.972   40.972

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  163.7743 +22.4606 0.0084   55.2  -10.7       5.2030    23.0  TRIG_00791201       
------------------------------------------
 
Foreground time interval of the image:
-15.528   8.773 (delta_t =  24.301 [sec])
Background time interval of the image:
-239.528 -15.528 (delta_t = 224.000 [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  -15.528 sec. to   64.472 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66545     ( -0.0627465   0.0630636 )
Norm@50keV  : 1.18427E-02    ( -0.000422763   0.000422662 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.86 using 59 PHA bins.
# Reduced chi-squared =          1.243 for     57 degrees of freedom 
# Null hypothesis probability =   1.026334e-01
 
Photon flux (15-150 keV)    in 80 sec: 1.55434 ( -0.0619123  0.062157 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.79816e-06 ( -3.22411e-07  3.22677e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -15.528 sec. to   64.472 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.05949     ( -0.289709   0.273018 )
Epeak [keV] : 85.9748      ( -11.8525 26.0639 )
Norm@50keV  : 2.24322E-02    ( -0.00548333   0.00777071 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.57 using 59 PHA bins.
# Reduced chi-squared =         0.9923 for     56 degrees of freedom 
# Null hypothesis probability =   4.910347e-01
 
Photon flux (15-150 keV)    in 80 sec: 1.49082 ( -0.06678  0.06722 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.55848e-06 ( -3.4376e-07  3.4288e-07 ) ergs/cm2
 
Band function
Time interval is from  -15.528 sec. to   64.472 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.05960   ( -0.261468   0.307837 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 85.9665      ( -11.3631 26.0577 )
Norm@50keV   : 2.24276E-02    ( -0.00549062   0.00777641 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.57 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     55 degrees of freedom 
# Null hypothesis probability =   4.530793e-01
 
Photon flux (15-150 keV)    in 80 sec: 1.49008 ( 5.50992  -0.05728 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.56464e-06 ( -8.56408e-06  -3.5632e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.8814  (  )
R^2/D10^2   : 0.137663  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         187.73 using 59 PHA bins.
# Reduced chi-squared =         3.2935 for     57 degrees of freedom 
# Null hypothesis probability =   7.381887e-16
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.753e-07   4.132e-08
25- 50  2.405e-06   1.052e-07
50-150  4.228e-06   2.612e-07
15-150  7.209e-06   3.092e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 160.526       (-24.1176      31.9469)
Norm        : 6.32211       (-0.279474     0.299267)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.45 using 59 PHA bins.
# Reduced chi-squared =          1.008 for     57 degrees of freedom 
# Null hypothesis probability =   4.584070e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.287e-06   8.080e-08
25- 50  2.411e-06   1.696e-07
50-150  4.904e-06   1.238e-06
15-150  8.602e-06   1.370e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.44094        (-1.15111      1.29941)
R1^2/D10^2  : 1.96273        (-0.924754      2.24577)
kT2 [keV]   : 22.2165        (-2.08071      2.87778)
R2^2/D10^2  : 3.32108E-02    (-0.0131932   0.0166888)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.28 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     55 degrees of freedom 
# Null hypothesis probability =   2.905783e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.193e-06   1.860e-07
25- 50  2.388e-06   2.156e-07
50-150  4.873e-06   4.504e-07
15-150  8.454e-06   6.588e-07

Peak spectrum fit

Power-law model
Time interval is from   39.972 sec. to   40.972 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87297     ( -0.0664507   0.0673196 )
Norm@50keV  : 8.02005E-02    ( -0.00327793   0.00327105 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.21 using 59 PHA bins.
# Reduced chi-squared =          1.232 for     57 degrees of freedom 
# Null hypothesis probability =   1.123095e-01
 
Photon flux (15-150 keV)    in 1 sec: 11.3798 ( -0.492316  0.493784 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.37287e-07 ( -3.0128e-08  3.0154e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   39.972 sec. to   40.972 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.970515     ( -0.342818   0.318167 )
Epeak [keV] : 59.2365      ( -5.13673 7.23509 )
Norm@50keV  : 0.221365    ( -0.0656053   0.102647 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.85 using 59 PHA bins.
# Reduced chi-squared =         0.7831 for     56 degrees of freedom 
# Null hypothesis probability =   8.807854e-01
 
Photon flux (15-150 keV)    in 1 sec: 10.8348 ( -0.517  0.5199 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.1069e-07 ( -3.215e-08  3.1965e-08 ) ergs/cm2
 
Band function
Time interval is from   39.972 sec. to   40.972 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.598227   ( -0.487928   0.631061 )
beta        : -2.44152    ( 2.44449   0.251401 )
Epeak [keV] : 52.4234      ( -6.70659 8.28198 )
Norm@50keV   : 0.360786    ( -0.16256   0.464793 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.30 using 59 PHA bins.
# Reduced chi-squared =         0.7510 for     55 degrees of freedom 
# Null hypothesis probability =   9.144032e-01
 
Photon flux (15-150 keV)    in 1 sec: 10.7067 ( -3.7067  -0.5268 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.08596e-07 ( -7.08589e-07  -3.1424e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.3749  (  )
R^2/D10^2   : 1.83990  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         134.77 using 59 PHA bins.
# Reduced chi-squared =         2.3644 for     57 degrees of freedom 
# Null hypothesis probability =   3.038440e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.975e-08   5.055e-09
25- 50  2.476e-07   1.170e-08
50-150  2.846e-07   2.190e-08
15-150  6.019e-07   2.810e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 98.3935       (-11.6141      14.2196)
Norm        : 50.2260       (-2.92965     3.12105)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.67 using 59 PHA bins.
# Reduced chi-squared =         0.8188 for     57 degrees of freedom 
# Null hypothesis probability =   8.337623e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.313e-07   1.030e-08
25- 50  2.262e-07   1.075e-08
50-150  3.632e-07   9.080e-08
15-150  7.208e-07   9.640e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.69573        (-1.51346      1.29775)
R1^2/D10^2  : 6.24315        (-2.01901      4.59722)
kT2 [keV]   : 25.1568        (-5.00186      8.31716)
R2^2/D10^2  : 0.100413    (-0.0667515   0.166674)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.71 using 59 PHA bins.
# Reduced chi-squared =         0.9220 for     55 degrees of freedom 
# Null hypothesis probability =   6.391987e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.012e-07   1.404e-08
25- 50  2.441e-07   2.710e-08
50-150  3.559e-07   1.116e-07
15-150  7.012e-07   1.390e-07
Plot creation:
Tue Nov 21 10:32:22 EST 2017