batgrbproduct analysis for trigger=868427

batgrbproduct Analysis for Trigger=868427

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Oct 24 02:22:21 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger868427/GCN5_download_cron
======================================================================

  Trigger: 00868427      Segment: 000

  BAT Trigger Time: 561953064   [s; MET]
      Trigger Stop: 561953160   [s; MET]
               UTC: 2018-10-23T02:04:02.201780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 248.328741900568   Dec: 19.564150818638  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.13
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.13

  Flight Position:   [ source = BAT ]
    RA: 248.328741900568   Dec: 19.564150818638  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 248.322482056697   Dec: 19.5808761761094  [deg; J2000]  
        { 16h 33m 17.4s , +19d 34' 51.2" }
         +/- 2.03273914026956 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.04308943889578 [arcmin] (formal 1-sigma fit error)
    SNR: 11.0408303769085
 
  Angular difference between Flight and Ground position is 1.064092 arcmin
 
  Partial Coding Fraction: 0.53125    [ including projection effects ]

  Duration
     T90: 57.9639999866486 +/- 8.80705991925374
        Measured from: -22.4159998893738
                   to: 35.5480000972748     [s; relative to TRIGTIME]
     T50: 35.6159999370575 +/- 8.14841952695596
        Measured from: -7.61999988555908
                   to: 27.9960000514984     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 32.1840000152588     
                   to: 33.1840000152588     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -27.6200000047684     
                   to: 36.6840000152588     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.690249   0.755642   0.580920   0.116829
           0.104103   0.089877   0.075663   0.067159 [error]
 Peak      0.044157   0.032890   0.030239   0.010674
           0.012811   0.011149   0.009474   0.008277 [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 2.23e-07 3.53e-07 4.22e-07 9.84e-07 1.28e-06 1.98e-06   erg/cm2
              Error 4.93e-08 4.72e-08 7.66e-08 3.86e-07 1.81e-07 4.45e-07   erg/cm2
Peak flux Power-law 4.34e-01 3.40e-01 1.79e-01 1.37e-01 1.02e+00 1.09e+00   ph/cm2/s
              Error 2.11e-01 1.03e-01 8.14e-02 1.30e-01 3.12e-01 3.22e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.19e-07 3.57e-07 4.25e-07 8.24e-07 1.27e-06 1.83e-06   erg/cm2
              Error 5.56e-08 5.35e-08 7.99e-08 6.14e-07 1.94e-07 6.19e-07   erg/cm2
Peak flux Cutoff-PL 4.43e-01 3.40e-01 1.77e-01 1.30e-01 1.02e+00 1.09e+00   ph/cm2/s
              Error 2.15e-01 1.02e-01 8.23e-02 1.19e-01 3.12e-01 3.31e-01   ph/cm2/s
 
Fluence        Band 2.16e-07 3.56e-07 4.24e-07 8.32e-07 1.27e-06 1.84e-06   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    1.742    0.240    -      -           2.16e-03 2.93e-04   71.330 57
CPL   1.630    0.886     163.0  -24.5      2.46e-03 2.83e-03   71.270 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.924    0.613    -      -           7.01e-03 2.42e-03   48.190 57
CPL   1.912    1.614     283.7    0.0      7.14e-03 0.00e+00   48.200 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: 16.128000 sec.
T50 in the 50-300 keV band: 9.344000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.304  -27.620   36.684
T90    57.964  -22.416   35.548
T50    35.616   -7.620   27.996
Peak    1.000   32.184   33.184

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  248.3225 +19.5809 0.0173   40.1  -25.6       1.9937    11.0  TRIG_00868427       
------------------------------------------
 
Foreground time interval of the image:
-16.499  36.684 (delta_t =  53.183 [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  -27.620 sec. to   36.684 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.74163     ( -0.237754   0.24279 )
Norm@50keV  : 2.16036E-03    ( -0.00029532   0.000291469 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.33 using 59 PHA bins.
# Reduced chi-squared =          1.251 for     57 degrees of freedom 
# Null hypothesis probability =   9.600596e-02
 
Photon flux (15-150 keV)    in 64.3 sec: 0.291221 ( -0.0394147  0.039626 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.28242e-06 ( -1.79683e-07  1.81632e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -27.620 sec. to   36.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62966     ( -0.959319   0.81321 )
Epeak [keV] : 163.047      ( -114.138 -163.047 )
Norm@50keV  : 2.46419E-03    ( -0.000788542   0.00487696 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.27 using 59 PHA bins.
# Reduced chi-squared =          1.273 for     56 degrees of freedom 
# Null hypothesis probability =   8.205954e-02
 
Photon flux (15-150 keV)    in 64.3 sec: 0.289355 ( -0.041717  0.040949 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27189e-06 ( -1.98378e-07  1.89762e-07 ) ergs/cm2
 
Band function
Time interval is from  -27.620 sec. to   36.684 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.58484   ( -5.18926   0.793466 )
beta        : -9.27956    ( 9.35781   19.3578 )
Epeak [keV] : 138.025      ( -137.906 -137.906 )
Norm@50keV   : 2.58037E-03    ( -0.000704035   0.00321854 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.28 using 59 PHA bins.
# Reduced chi-squared =          1.296 for     55 degrees of freedom 
# Null hypothesis probability =   6.896787e-02
 
Photon flux (15-150 keV)    in 64.3 sec: 0.289839 ( 6.71016  -0.041624 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27064e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.1456  (-2.30701  2.73238)
R^2/D10^2   : 3.70591E-02  (-0.0175099   0.0341903)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          89.00 using 59 PHA bins.
# Reduced chi-squared =          1.561 for     57 degrees of freedom 
# Null hypothesis probability =   4.274086e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.006e-07   2.630e-08
25- 50  3.781e-07   7.992e-08
50-150  5.008e-07   1.401e-07
15-150  9.794e-07   1.755e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 150.344       (-64.6262      -138.866)
Norm        : 1.13766       (-0.176718     0.279584)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.05 using 59 PHA bins.
# Reduced chi-squared =          1.264 for     57 degrees of freedom 
# Null hypothesis probability =   8.651479e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.878e-07   1.054e-07
25- 50  3.483e-07   1.872e-07
50-150  6.881e-07   4.012e-07
15-150  1.224e-06   7.005e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.10177        (-1.34543      1.90949)
R1^2/D10^2  : 1.16345        (-0.838605      3.39096)
kT2 [keV]   : 21.3401        (-4.6822      8.57055)
R2^2/D10^2  : 6.97343E-03    (-0.00491001   0.00782753)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.27 using 59 PHA bins.
# Reduced chi-squared =          1.259 for     55 degrees of freedom 
# Null hypothesis probability =   9.336650e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.354e-07   1.323e-07
25- 50  3.341e-07   1.577e-07
50-150  6.819e-07   3.825e-07
15-150  1.251e-06   5.412e-07

Peak spectrum fit

Power-law model
Time interval is from   32.184 sec. to   33.184 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.92420     ( -0.57913   0.645874 )
Norm@50keV  : 7.00691E-03    ( -0.00251511   0.00233132 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.19 using 59 PHA bins.
# Reduced chi-squared =         0.8455 for     57 degrees of freedom 
# Null hypothesis probability =   7.905296e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.01605 ( -0.310383  0.312834 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.44409e-08 ( -2.12126e-08  2.19263e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   32.184 sec. to   33.184 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.91194     ( -2.01222   1.21667 )
Epeak [keV] : 283.677      (   )
Norm@50keV  : 7.13971E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.20 using 59 PHA bins.
# Reduced chi-squared =         0.8607 for     56 degrees of freedom 
# Null hypothesis probability =   7.613319e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.01859 ( -0.314716  0.3095 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.40255e-08 ( -2.09978e-08  2.20561e-08 ) ergs/cm2
 
Band function
Time interval is from   32.184 sec. to   33.184 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.46224   ( 1.45898   1.45898 )
beta        : -1.93787    ( 1.9374   0.591027 )
Epeak [keV] : 27.5438      ( -27.3649 -27.3649 )
Norm@50keV   : 1.58767E-02    ( -0.0160874   2.35425e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.19 using 59 PHA bins.
# Reduced chi-squared =         0.8761 for     55 degrees of freedom 
# Null hypothesis probability =   7.305115e-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]    : 12.2652  (-5.76545  7.7675)
R^2/D10^2   : 0.204564  (-0.197828   2.10071)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.57 using 59 PHA bins.
# Reduced chi-squared =         0.9398 for     57 degrees of freedom 
# Null hypothesis probability =   6.045186e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.519e-09   4.129e-09
25- 50  2.104e-08   1.280e-08
50-150  1.931e-08   1.382e-08
15-150  4.687e-08   2.971e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 90.2991       (-56.8627      -90.3201)
Norm        : 4.48927       (-1.68362     3.35447)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.74 using 59 PHA bins.
# Reduced chi-squared =         0.8551 for     57 degrees of freedom 
# Null hypothesis probability =   7.737306e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.171e-08   7.320e-09
25- 50  1.983e-08   1.192e-08
50-150  3.026e-08   2.472e-08
15-150  6.180e-08   4.208e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.86155        (-2.20346      3.63933)
R1^2/D10^2  : 6.12982        (-5.50215      111.134)
kT2 [keV]   : 22.6830        (-9.93723      77.8046)
R2^2/D10^2  : 1.72843E-02    (-0.0169921   0.130713)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.33 using 59 PHA bins.
# Reduced chi-squared =         0.8605 for     55 degrees of freedom 
# Null hypothesis probability =   7.593982e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.493e-08   9.170e-09
25- 50  1.684e-08   8.805e-09
50-150  3.386e-08   2.251e-08
15-150  6.563e-08   3.456e-08
Plot creation:
Wed Oct 24 02:27:19 EDT 2018