batgrbproduct analysis for trigger=868312

batgrbproduct Analysis for Trigger=868312

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Oct 23 21:11:38 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger868312/GCN5_download_cron
======================================================================

  Trigger: 00868312      Segment: 000

  BAT Trigger Time: 561922234.944   [s; MET]
      Trigger Stop: 561922240.448   [s; MET]
               UTC: 2018-10-22T17:30:13.147700    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 56.7952243531036   Dec: -29.3323371797094  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.23
     Image Trigger?:     NO
     Rate S/N Ratio:     13.0384048104053  [ if not an image trigger ]
     Image S/N Ratio:    7.23

  Flight Position:   [ source = BAT ]
    RA: 56.7952243531036   Dec: -29.3323371797094  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 56.8310869578789   Dec: -29.3418039296244  [deg; J2000]  
        { 03h 47m 19.5s , -29d 20' 30.5" }
         +/- 3.05815681189068 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.44515652033363 [arcmin] (formal 1-sigma fit error)
    SNR: 6.16033670887298
 
  Angular difference between Flight and Ground position is 1.959911 arcmin
 
  Partial Coding Fraction: 1.03125    [ including projection effects ]

  Duration
     T90: 7.87199997901917 +/- 2.60077841116735
        Measured from: -1.08799993991852
                   to: 6.78400003910065     [s; relative to TRIGTIME]
     T50: 3.63599991798401 +/- 1.79021448846422
        Measured from: 1.32000017166138
                   to: 4.95600008964539     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 4.40400004386902     
                   to: 5.40400004386902     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.01600003242493     
                   to: 7.96399998664856     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.055337   0.084626   0.093960   0.056052
           0.020787   0.022069   0.020532   0.018948 [error]
 Peak      0.009497   0.015515   0.024125   0.017460
           0.006507   0.007154   0.006987   0.006166 [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 1.32e-08 3.36e-08 6.88e-08 3.55e-07 1.85e-07 4.71e-07   erg/cm2
              Error 6.53e-09 1.00e-08 1.88e-08 2.34e-07 4.98e-08 2.43e-07   erg/cm2
Peak flux Power-law 1.09e-01 1.31e-01 1.15e-01 1.72e-01 4.15e-01 5.27e-01   ph/cm2/s
              Error 6.93e-02 5.47e-02 5.16e-02 1.60e-01 1.58e-01 2.19e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.18e-08 3.47e-08 7.20e-08 1.91e-07 1.80e-07 3.10e-07   erg/cm2
              Error 7.99e-09 1.11e-08 2.22e-08 2.06e-07 5.34e-08 1.98e-07   erg/cm2
Peak flux Cutoff-PL 5.86e-02 1.45e-01 1.43e-01 4.06e-02 3.79e-01 3.88e-01   ph/cm2/s
              Error 8.07e-02 9.05e-02 -------- 1.51e-01 1.71e-01 2.40e-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    0.968    0.443    -      -           1.70e-03 4.18e-04   59.540 57
CPL   0.493    1.010     179.5    0.0      2.78e-03 1.24e-02   59.300 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.192    0.640    -      -           3.54e-03 1.35e-03   59.170 57
CPL  -1.056    1.129      75.2    0.0      3.61e-02 0.00e+00   57.810 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: 6.208000 sec.
T50 in the 50-300 keV band: 3.392000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.980   -2.016    7.964
T90     7.872   -1.088    6.784
T50     3.636    1.320    4.956
Peak    1.000    4.404    5.404

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   56.8311 -29.3418 0.0311    1.1  137.1       0.2539     6.2  TRIG_00868312       
------------------------------------------
 
Foreground time interval of the image:
 -2.016   7.964 (delta_t =   9.980 [sec])
Background time interval of the image:
-239.944  -2.016 (delta_t = 237.928 [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   -2.016 sec. to    7.964 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.968432     ( -0.460551   0.425222 )
Norm@50keV  : 1.69939E-03    ( -0.00041911   0.000416218 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.54 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     57 degrees of freedom 
# Null hypothesis probability =   3.834283e-01
 
Photon flux (15-150 keV)    in 9.98 sec: 0.195367 ( -0.0484544  0.0486883 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.85495e-07 ( -4.93234e-08  5.03152e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.016 sec. to    7.964 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.492574     ( -2.51222   -0.492573 )
Epeak [keV] : 179.484      ( -179.483 -179.483 )
Norm@50keV  : 2.77826E-03    ( -0.00145587   0.0232801 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.30 using 59 PHA bins.
# Reduced chi-squared =          1.059 for     56 degrees of freedom 
# Null hypothesis probability =   3.560949e-01
 
Photon flux (15-150 keV)    in 9.98 sec: 0.191156 ( -0.051435  0.050681 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.80304e-07 ( -5.33521e-08  5.3385e-08 ) ergs/cm2
 
Band function
Time interval is from   -2.016 sec. to    7.964 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.68590   ( 0.491852   2.88728 )
beta        : -1.03719    ( 1.55115   1.55115 )
Epeak [keV] : 27.8411      ( -142.218 817.788 )
Norm@50keV   : 7.46730    ( -7.47626   68760.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.02 using 59 PHA bins.
# Reduced chi-squared =          1.073 for     55 degrees of freedom 
# Null hypothesis probability =   3.309023e-01
 
Photon flux (15-150 keV)    in 9.98 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]    : 22.6634  (-6.09582  10.0473)
R^2/D10^2   : 6.40785E-03  (-0.00428603   0.0107592)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.96 using 59 PHA bins.
# Reduced chi-squared =          1.069 for     57 degrees of freedom 
# Null hypothesis probability =   3.354839e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.995e-09   3.544e-09
25- 50  3.225e-08   1.746e-08
50-150  1.238e-07   7.371e-08
15-150  1.620e-07   7.674e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-77.6334      -200)
Norm        : 0.784306       (-0.200607     0.200607)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.26 using 59 PHA bins.
# Reduced chi-squared =          1.127 for     57 degrees of freedom 
# Null hypothesis probability =   2.372995e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.949e-08   1.178e-08
25- 50  3.749e-08   2.239e-08
50-150  8.222e-08   4.930e-08
15-150  1.392e-07   8.583e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.80789        (-5.82244      -5.82244)
R1^2/D10^2  : 0.228257        (-0.227729      -0.227729)
kT2 [keV]   : 27.9346        (-27.9376      -27.9376)
R2^2/D10^2  : 3.09043E-03    (-0.00309056   0.00805775)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.54 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     55 degrees of freedom 
# Null hypothesis probability =   3.469010e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.366e-08   8.268e-09
25- 50  3.254e-08   1.729e-08
50-150  1.335e-07   7.929e-08
15-150  1.797e-07   9.890e-08

Peak spectrum fit

Power-law model
Time interval is from    4.404 sec. to    5.404 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19243     ( -0.634452   0.64501 )
Norm@50keV  : 3.54025E-03    ( -0.00135226   0.0013449 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.17 using 59 PHA bins.
# Reduced chi-squared =          1.038 for     57 degrees of freedom 
# Null hypothesis probability =   3.962002e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.415119 ( -0.157753  0.158048 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.59934e-08 ( -1.51822e-08  1.57939e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    4.404 sec. to    5.404 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.05575     ( 1.1039   3.36244 )
Epeak [keV] : 75.1862      (   )
Norm@50keV  : 3.61341E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.81 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     56 degrees of freedom 
# Null hypothesis probability =   4.083912e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.379252 ( -0.172323  0.168941 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.27647e-08 ( -1.39981e-08  1.64116e-08 ) ergs/cm2
 
Band function
Time interval is from    4.404 sec. to    5.404 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.05731   ( -1.31664   0.174743 )
beta        : -10.00000    ( 10   6.46715e-10 )
Epeak [keV] : 75.1757      ( -24.9692 -75.1757 )
Norm@50keV   : 3.69665E-02    ( -0.0135027   1.67973 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.81 using 59 PHA bins.
# Reduced chi-squared =          1.051 for     55 degrees of freedom 
# Null hypothesis probability =   3.719570e-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]    : 18.8531  (-5.8461  9.48866)
R^2/D10^2   : 2.53130E-02  (-0.0253147   0.0583261)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.70 using 59 PHA bins.
# Reduced chi-squared =          1.012 for     57 degrees of freedom 
# Null hypothesis probability =   4.493647e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.773e-09   1.144e-09
25- 50  8.483e-09   5.400e-09
50-150  2.213e-08   1.502e-08
15-150  3.238e-08   2.068e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 1.68077       (-0.646065     0.646859)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.79 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     57 degrees of freedom 
# Null hypothesis probability =   3.747402e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.185e-09   2.831e-09
25- 50  8.051e-09   5.340e-09
50-150  1.766e-08   1.142e-08
15-150  2.989e-08   1.968e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.40614        (-2.40481      24.3064)
R1^2/D10^2  : 28.3513        (-28.4541      -28.4541)
kT2 [keV]   : 19.7868        (-6.28028      -19.7859)
R2^2/D10^2  : 2.09504E-02    (-0.0209543   0.0504853)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.06 using 59 PHA bins.
# Reduced chi-squared =          1.037 for     55 degrees of freedom 
# Null hypothesis probability =   3.983560e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.760e-09   1.330e-09
25- 50  7.927e-09   5.040e-09
50-150  2.276e-08   1.520e-08
15-150  3.345e-08   2.166e-08
Plot creation:
Tue Oct 23 21:16:22 EDT 2018