batgrbproduct analysis for trigger=878548

batgrbproduct Analysis for Trigger=878548

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Dec 24 03:38:21 EST 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger878548/GCN5_download_cron
======================================================================

  Trigger: 00878548      Segment: 000

  BAT Trigger Time: 567226064   [s; MET]
      Trigger Stop: 567226168   [s; MET]
               UTC: 2018-12-23T02:47:21.873160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 247.818270329542   Dec: -47.8175494276217  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    15.07
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    15.07

  Flight Position:   [ source = BAT ]
    RA: 247.818270329542   Dec: -47.8175494276217  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 247.787793408484   Dec: -47.8146885983607  [deg; J2000]  
        { 16h 31m 09.1s , -47d 48' 52.9" }
         +/- 1.10223707490276 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.559560113972941 [arcmin] (formal 1-sigma fit error)
    SNR: 26.4682666718539
 
  Angular difference between Flight and Ground position is 1.239877 arcmin
 
  Partial Coding Fraction: 0.84375    [ including projection effects ]

  Duration
     T90: 769.471999883652 +/- 26.3494288032499
        Measured from: -0.243999838829041
                   to: 769.228000044823     [s; relative to TRIGTIME]
     T50: 412.46799993515 +/- 26.8040329185498
        Measured from: 183.852000117302
                   to: 596.320000052452     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 804.324000000954     
                   to: 805.324000000954     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -42.6920000314713     
                   to: 813.496000051498     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     7.408760   7.981544   3.364726   0.499026
           0.219496   0.216088   0.184406   0.165902 [error]
 Peak      0.043292   0.018857   0.018311   0.012171
           0.014277   0.013694   0.011973   0.010241 [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 2.52e-06 3.15e-06 2.86e-06 4.51e-06 1.01e-05 1.30e-05   erg/cm2
              Error 1.57e-07 1.19e-07 1.83e-07 5.97e-07 4.14e-07 7.67e-07   erg/cm2
Peak flux Power-law 2.99e-01 2.30e-01 1.18e-01 8.74e-02 6.87e-01 7.35e-01   ph/cm2/s
              Error 2.68e-01 1.20e-01 1.14e-01 2.02e-01 3.22e-01 3.58e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.30e-06 3.34e-06 2.76e-06 1.55e-06 9.35e-06 9.94e-06   erg/cm2
              Error 1.88e-07 1.52e-07 2.12e-07 7.70e-07 5.19e-07 9.54e-07   erg/cm2
Peak flux Cutoff-PL 3.19e-01 2.27e-01 1.06e-01 6.99e-02 6.86e-01 7.21e-01   ph/cm2/s
              Error 2.14e-01 1.21e-01 1.15e-01 2.03e-01 3.22e-01 3.59e-01   ph/cm2/s
 
Fluence        Band 2.21e-06 3.38e-06 2.66e-06 3.08e-06 9.48e-06 1.14e-05   erg/cm2
              Error 2.07e-07 1.62e-07 2.12e-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    2.140    0.078    -      -           1.26e-03 5.72e-05   58.330 57
CPL   1.437    0.364      34.5    8.0      3.08e-03 1.49e-03   45.300 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.958    1.478    -      -           4.67e-03 3.78e-03   41.020 57
CPL   3.691    1.589     426.9    0.0      7.53e-04 0.00e+00   39.620 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  856.188  -42.692  813.496
T90   769.472   -0.244  769.228
T50   412.468  183.852  596.320
Peak    1.000  804.324  805.324

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  247.7878 -47.8147 0.0073   20.0  -54.1      18.1961    26.5  TRIG_00878548       
------------------------------------------
 
Foreground time interval of the image:
-13.499 737.601 (delta_t = 751.100 [sec])
Background time interval of the image:

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  -42.692 sec. to  813.496 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.13980     ( -0.0775817   0.0787854 )
Norm@50keV  : 1.26056E-03    ( -5.7404e-05   5.69848e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.33 using 59 PHA bins.
# Reduced chi-squared =          1.023 for     57 degrees of freedom 
# Null hypothesis probability =   4.261817e-01
 
Photon flux (15-150 keV)    in 856.2 sec: 0.202306 ( -0.00817821  0.00820566 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.007e-05 ( -4.12878e-07  4.1504e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -42.692 sec. to  813.496 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.43721     ( -0.380612   0.347205 )
Epeak [keV] : 34.4604      ( -10.2441 5.67646 )
Norm@50keV  : 3.07660E-03    ( -0.00108107   0.00190499 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.30 using 59 PHA bins.
# Reduced chi-squared =         0.8090 for     56 degrees of freedom 
# Null hypothesis probability =   8.460054e-01
 
Photon flux (15-150 keV)    in 856.2 sec: 0.192704 ( -0.009256  0.009289 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.35347e-06 ( -5.13378e-07  5.24337e-07 ) ergs/cm2
 
Band function
Time interval is from  -42.692 sec. to  813.496 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.43715   ( -0.199072   0.261805 )
beta        : -10.00000    ( 10   2.89207e-09 )
Epeak [keV] : 34.4539      ( -4.09453 5.67019 )
Norm@50keV   : 3.07635E-03    ( -0.00108238   0.000818693 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.30 using 59 PHA bins.
# Reduced chi-squared =         0.8237 for     55 degrees of freedom 
# Null hypothesis probability =   8.214418e-01
 
Photon flux (15-150 keV)    in 856.2 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.48122e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.0358  (  )
R^2/D10^2   : 8.55646E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         141.90 using 59 PHA bins.
# Reduced chi-squared =         2.4894 for     57 degrees of freedom 
# Null hypothesis probability =   3.442573e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.505e-06   9.204e-08
25- 50  3.760e-06   1.537e-07
50-150  1.983e-06   2.123e-07
15-150  7.247e-06   3.005e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 56.4782       (-6.25384      7.19299)
Norm        : 1.05833       (-0.0779485     0.075961)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.44 using 59 PHA bins.
# Reduced chi-squared =         0.7971 for     57 degrees of freedom 
# Null hypothesis probability =   8.649220e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.254e-06   1.404e-07
25- 50  3.365e-06   1.306e-07
50-150  3.637e-06   3.575e-07
15-150  9.256e-06   4.153e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.23906        (-0.852766      0.843982)
R1^2/D10^2  : 0.395806        (-0.13952      0.271675)
kT2 [keV]   : 18.6902        (-2.90969      4.29639)
R2^2/D10^2  : 4.85194E-03    (-0.00282557   0.00543115)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.12 using 59 PHA bins.
# Reduced chi-squared =         0.8386 for     55 degrees of freedom 
# Null hypothesis probability =   7.974294e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.137e-06   3.044e-07
25- 50  3.370e-06   4.452e-07
50-150  3.705e-06   8.904e-07
15-150  9.212e-06   1.318e-06

Peak spectrum fit

Power-law model
Time interval is from  804.324 sec. to  805.324 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95783     ( -1.16222   1.79337 )
Norm@50keV  : 4.67110E-03    ( -0.00466742   0.00288625 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.02 using 59 PHA bins.
# Reduced chi-squared =         0.7196 for     57 degrees of freedom 
# Null hypothesis probability =   9.453217e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.687430 ( -0.322319  0.322224 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.29741e-08 ( -4.29741e-08  2.93306e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  804.324 sec. to  805.324 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.69057     ( -2.81657   0.361583 )
Epeak [keV] : 426.940      (   )
Norm@50keV  : 7.52772E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.62 using 59 PHA bins.
# Reduced chi-squared =         0.7074 for     56 degrees of freedom 
# Null hypothesis probability =   9.522448e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.685888 ( -0.32192  0.322102 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.19775e-08 ( -2.54445e-08  3.03529e-08 ) ergs/cm2
 
Band function
Time interval is from  804.324 sec. to  805.324 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45188   ( 1.45806   1.45806 )
beta        : -1.92307    ( 1.93634   1.14094 )
Epeak [keV] : 19.9698      ( -13.8936 -13.8936 )
Norm@50keV   : 1.25492E-02    ( -0.0137399   1.01349 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.02 using 59 PHA bins.
# Reduced chi-squared =         0.7459 for     55 degrees of freedom 
# Null hypothesis probability =   9.193447e-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]    : 5.26900  (-2.72166  37.774)
R^2/D10^2   : 3.80346  (-3.77988   154.609)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.71 using 59 PHA bins.
# Reduced chi-squared =         0.7668 for     57 degrees of freedom 
# Null hypothesis probability =   9.021032e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.136e-08   7.150e-09
25- 50  8.421e-09   5.925e-09
50-150  4.385e-10   5.400e-10
15-150  2.021e-08   1.358e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.668       (-199.668      -199.668)
Norm        : 2.65054       (-1.28363     22.8835)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.80 using 59 PHA bins.
# Reduced chi-squared =         0.7333 for     57 degrees of freedom 
# Null hypothesis probability =   9.345399e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.686e-09   5.015e-09
25- 50  1.326e-08   8.840e-09
50-150  2.132e-08   1.853e-08
15-150  4.226e-08   3.009e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.11366        (-2.27716      3.82483)
R1^2/D10^2  : 10.5193        (-10.0326      1413.61)
kT2 [keV]   : 38.4075        (-24.0581      -38.5021)
R2^2/D10^2  : 2.92626E-03    (-0.00286881   0.0496085)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.91 using 59 PHA bins.
# Reduced chi-squared =         0.7074 for     55 degrees of freedom 
# Null hypothesis probability =   9.506072e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.151e-08   7.590e-09
25- 50  8.139e-09   4.817e-09
50-150  3.515e-08   2.374e-08
15-150  5.480e-08   2.920e-08
Plot creation:
Mon Dec 24 03:42:53 EST 2018