batgrbproduct analysis for trigger=849018

batgrbproduct Analysis for Trigger=849018

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Jul 22 13:56:33 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger849018/GCN5_download_cron
======================================================================

  Trigger: 00849018      Segment: 000

  BAT Trigger Time: 553864029.696   [s; MET]
      Trigger Stop: 553864030.72   [s; MET]
               UTC: 2018-07-21T11:06:48.396880    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 347.694926138303   Dec: 4.87966224106747  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.61
     Image Trigger?:     NO
     Rate S/N Ratio:     14.2828568570857  [ if not an image trigger ]
     Image S/N Ratio:    7.61

  Flight Position:   [ source = BAT ]
    RA: 347.694926138303   Dec: 4.87966224106747  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 347.707623858814   Dec: 4.87114971624257  [deg; J2000]  
        { 23h 10m 49.8s , +04d 52' 16.1" }
         +/- 1.77563251961986 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.767249768881852 [arcmin] (formal 1-sigma fit error)
    SNR: 13.3936726289758
 
  Angular difference between Flight and Ground position is 0.914937 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 47.6119998693466 +/- 2.9961741829018
        Measured from: 0.0800001621246338
                   to: 47.6920000314713     [s; relative to TRIGTIME]
     T50: 15.3040000200272 +/- 27.0325613838356
        Measured from: 1.97200012207031
                   to: 17.2760001420975     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.81599998474121     
                   to: 2.81599998474121     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.391999959945679     
                   to: 48.9160000085831     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.186829   0.347594   0.277372   0.084557
           0.040417   0.042194   0.036716   0.031625 [error]
 Peak      0.024189   0.045188   0.032972   0.013203
           0.005984   0.006502   0.005761   0.004637 [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 5.99e-08 1.28e-07 2.15e-07 8.25e-07 5.92e-07 1.23e-06   erg/cm2
              Error 1.41e-08 1.84e-08 3.44e-08 2.91e-07 8.65e-08 3.14e-07   erg/cm2
Peak flux Power-law 2.35e-01 2.81e-01 2.43e-01 3.60e-01 8.86e-01 1.12e+00   ph/cm2/s
              Error 6.66e-02 4.97e-02 4.50e-02 1.39e-01 1.40e-01 1.89e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.45e-08 1.35e-07 2.24e-07 3.88e-07 5.68e-07 8.01e-07   erg/cm2
              Error 1.68e-08 2.25e-08 3.85e-08 4.19e-07 9.65e-08 3.67e-07   erg/cm2
Peak flux Cutoff-PL 2.13e-01 2.97e-01 2.55e-01 1.91e-01 8.68e-01 9.57e-01   ph/cm2/s
              Error 7.78e-02 6.11e-02 5.16e-02 1.99e-01 1.45e-01 2.64e-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    1.252    0.224    -      -           1.20e-03 1.56e-04   54.330 57
CPL   0.720    0.910     123.8    0.0      2.20e-03 0.00e+00   53.320 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.208    0.265    -      -           7.54e-03 1.18e-03   57.990 57
CPL   0.653    1.061     122.4  -32.1      1.44e-02 3.46e-02   57.200 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: 6.144000 sec.
T50 in the 50-300 keV band: 3.392000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   49.308   -0.392   48.916
T90    47.612    0.080   47.692
T50    15.304    1.972   17.276
Peak    1.000    1.816    2.816

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  347.7076  +4.8711 0.0144    5.2 -177.9       0.6619    13.4  TRIG_00849018       
------------------------------------------
 
Foreground time interval of the image:
 -0.392  18.805 (delta_t =  19.197 [sec])
Background time interval of the image:
-239.696 -147.696 (delta_t =  92.000 [sec])
-146.696 -98.326 (delta_t =  48.370 [sec])
-97.696  -0.392 (delta_t =  97.304 [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   -0.392 sec. to   48.916 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25243     ( -0.225636   0.222435 )
Norm@50keV  : 1.19948E-03    ( -0.000156185   0.000155938 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.33 using 59 PHA bins.
# Reduced chi-squared =         0.9531 for     57 degrees of freedom 
# Null hypothesis probability =   5.759762e-01
 
Photon flux (15-150 keV)    in 49.31 sec: 0.141923 ( -0.0187735  0.018805 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.91562e-07 ( -8.60129e-08  8.70721e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.392 sec. to   48.916 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.719999     ( -1.11977   0.699307 )
Epeak [keV] : 123.785      (   )
Norm@50keV  : 2.19657E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.32 using 59 PHA bins.
# Reduced chi-squared =         0.9521 for     56 degrees of freedom 
# Null hypothesis probability =   5.771288e-01
 
Photon flux (15-150 keV)    in 49.31 sec: 0.138762 ( -0.019672  0.019564 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.68027e-07 ( -9.69065e-08  9.61249e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.392 sec. to   48.916 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.536083   ( 0.430293   0.430293 )
beta        : -1.57807    ( 1.61205   0.517108 )
Epeak [keV] : 96.1808      ( -86.7846 474.637 )
Norm@50keV   : 2.82827E-03    ( -0.00342079   23.8454 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.99 using 59 PHA bins.
# Reduced chi-squared =         0.9635 for     55 degrees of freedom 
# Null hypothesis probability =   5.516441e-01
 
Photon flux (15-150 keV)    in 49.31 sec: 0.138086 ( 6.86191  -0.019651 ) 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]    : 16.9328  (-2.57954  3.27336)
R^2/D10^2   : 1.12406E-02  (-0.00504183   0.00848559)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.23 using 59 PHA bins.
# Reduced chi-squared =          1.074 for     57 degrees of freedom 
# Null hypothesis probability =   3.268673e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.240e-08   8.467e-09
25- 50  1.429e-07   2.867e-08
50-150  2.922e-07   7.749e-08
15-150  4.675e-07   9.061e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-47.2633      -200)
Norm        : 0.585390       (-0.0768873     0.0768873)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.27 using 59 PHA bins.
# Reduced chi-squared =          1.022 for     57 degrees of freedom 
# Null hypothesis probability =   4.283152e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.188e-08   4.046e-08
25- 50  1.383e-07   7.803e-08
50-150  3.033e-07   1.672e-07
15-150  5.134e-07   2.875e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.7085        (-6.68778      4.56769)
R1^2/D10^2  : 3.58696E-02        (-0.0210105      0.61442)
kT2 [keV]   : 40.8198        (-23.8704      -43.459)
R2^2/D10^2  : 4.39807E-04    (-0.000340641   0.00663447)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.38 using 59 PHA bins.
# Reduced chi-squared =         0.9705 for     55 degrees of freedom 
# Null hypothesis probability =   5.368490e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.673e-08   2.658e-08
25- 50  1.466e-07   8.079e-08
50-150  3.819e-07   2.092e-07
15-150  5.752e-07   3.037e-07

Peak spectrum fit

Power-law model
Time interval is from    1.816 sec. to    2.816 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20845     ( -0.267492   0.262027 )
Norm@50keV  : 7.53922E-03    ( -0.00118288   0.00118063 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.99 using 59 PHA bins.
# Reduced chi-squared =          1.017 for     57 degrees of freedom 
# Null hypothesis probability =   4.385739e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.886019 ( -0.140376  0.140558 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.6307e-08 ( -1.34195e-08  1.36212e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.816 sec. to    2.816 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.653294     ( -1.43309   0.689175 )
Epeak [keV] : 122.356      ( -58.1434 -122.353 )
Norm@50keV  : 1.43819E-02    ( -0.00780321   0.0614708 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.20 using 59 PHA bins.
# Reduced chi-squared =          1.021 for     56 degrees of freedom 
# Null hypothesis probability =   4.302716e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.868456 ( -0.145822  0.144744 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.29276e-08 ( -1.56121e-08  1.51407e-08 ) ergs/cm2
 
Band function
Time interval is from    1.816 sec. to    2.816 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.312691   ( -0.141897   4.84678 )
beta        : -1.62466    ( 1.60312   0.543899 )
Epeak [keV] : 64.5787      ( -64.5289 389.321 )
Norm@50keV   : 5.24948E-02    ( -0.0545303   57.9352 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.12 using 59 PHA bins.
# Reduced chi-squared =          1.020 for     55 degrees of freedom 
# Null hypothesis probability =   4.326470e-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]    : 16.2377  (-2.87888  3.94806)
R^2/D10^2   : 8.18974E-02  (-0.0426649   0.0774444)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.25 using 59 PHA bins.
# Reduced chi-squared =          1.092 for     57 degrees of freedom 
# Null hypothesis probability =   2.946811e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.450e-09   1.339e-09
25- 50  1.896e-08   4.855e-09
50-150  3.514e-08   1.225e-08
15-150  5.854e-08   1.537e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-56.5974      -200)
Norm        : 3.62584       (-0.576427     0.576427)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.68 using 59 PHA bins.
# Reduced chi-squared =          1.082 for     57 degrees of freedom 
# Null hypothesis probability =   3.125080e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.029e-09   5.205e-09
25- 50  1.737e-08   9.865e-09
50-150  3.809e-08   2.150e-08
15-150  6.449e-08   3.622e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 11.5904        (-3.60474      4.09647)
R1^2/D10^2  : 0.197700        (-0.115162      0.196837)
kT2 [keV]   : 67.3703        (-42.7052      -66.6367)
R2^2/D10^2  : 7.73002E-04    (-0.000764941   0.0159611)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.22 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.14 using 59 PHA bins.
# Reduced chi-squared =          1.004 for     55 degrees of freedom 
# Reduced chi-squared =          1.002 for     55 degrees of freedom 
# Null hypothesis probability =   4.664251e-01
# Null hypothesis probability =   4.695085e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.015e-09   3.539e-09
25- 50  1.908e-08   1.095e-08
50-150  4.980e-08   2.726e-08
15-150  7.490e-08   3.616e-08
Plot creation:
Sun Jul 22 14:00:10 EDT 2018