batgrbproduct analysis for trigger=819301

batgrbproduct Analysis for Trigger=819301

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Mar 30 02:10:33 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger819301/GCN5_download_cron
======================================================================

  Trigger: 00819301      Segment: 000

  BAT Trigger Time: 543977901.504   [s; MET]
      Trigger Stop: 543977909.696   [s; MET]
               UTC: 2018-03-29T00:58:00.805800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 329.297998471192   Dec: -15.0707756964668  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.9
     Image Trigger?:     NO
     Rate S/N Ratio:     9.59166304662544  [ if not an image trigger ]
     Image S/N Ratio:    6.9

  Flight Position:   [ source = BAT ]
    RA: 329.297998471192   Dec: -15.0707756964668  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 329.313681609916   Dec: -15.0433298584773  [deg; J2000]  
        { 21h 57m 15.3s , -15d 02' 36.0" }
         +/- 2.32500683744888 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.21035040556067 [arcmin] (formal 1-sigma fit error)
    SNR: 9.11287027475045
 
  Angular difference between Flight and Ground position is 1.880821 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 9.07599997520447 +/- 1.83236021171092
        Measured from: 0.100000143051147
                   to: 9.17600011825562     [s; relative to TRIGTIME]
     T50: 5.32799994945526 +/- 1.56560024191524
        Measured from: 1.52000021934509
                   to: 6.84800016880035     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.14000010490417     
                   to: 2.14000010490417     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.296000003814697     
                   to: 9.69200003147125     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.094696   0.122980   0.096190   0.030897
           0.020457   0.021253   0.018320   0.014816 [error]
 Peak      0.019497   0.021256   0.018600   0.004610
           0.006640   0.006844   0.005976   0.004843 [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 2.75e-08 5.40e-08 8.22e-08 2.72e-07 2.30e-07 4.36e-07   erg/cm2
              Error 8.45e-09 9.90e-09 1.83e-08 1.36e-07 4.45e-08 1.49e-07   erg/cm2
Peak flux Power-law 1.94e-01 1.80e-01 1.16e-01 1.15e-01 5.37e-01 6.04e-01   ph/cm2/s
              Error 8.94e-02 5.46e-02 4.85e-02 9.69e-02 1.61e-01 1.85e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.75e-08 5.42e-08 8.14e-08 2.51e-07 2.29e-07 4.14e-07   erg/cm2
              Error 8.52e-09 1.01e-08 1.83e-08 1.77e-07 4.43e-08 1.35e-07   erg/cm2
Peak flux Cutoff-PL 1.81e-01 1.90e-01 1.20e-01 6.69e-02 5.29e-01 5.57e-01   ph/cm2/s
              Error 1.03e-01 6.71e-02 5.43e-02 1.10e-01 1.64e-01 2.04e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.78e-01 1.91e-01 1.21e-01 6.17e-02 5.27e-01 5.51e-01   ph/cm2/s
              Error -------- -------- -------- -------- 1.62e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.393    0.313    -      -           2.38e-03 4.10e-04   57.070 57
CPL   2.457    1.366     152.6    0.0      6.50e-04 0.00e+00   56.490 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.637    0.539    -      -           4.13e-03 1.36e-03   52.980 57
CPL   1.168    2.029      85.2    0.0      7.30e-03 1.27e-01   52.790 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    9.988   -0.296    9.692
T90     9.076    0.100    9.176
T50     5.328    1.520    6.848
Peak    1.000    1.140    2.140

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  329.3137 -15.0433 0.0212   23.1  -48.3       0.3420     9.1  TRIG_00819301       
------------------------------------------
 
Foreground time interval of the image:
 -0.296   9.692 (delta_t =   9.988 [sec])
Background time interval of the image:
-239.504 -57.249 (delta_t = 182.255 [sec])
-56.504  -0.296 (delta_t =  56.208 [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   -0.296 sec. to    9.692 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39336     ( -0.313036   0.312713 )
Norm@50keV  : 2.38410E-03    ( -0.000411701   0.000408967 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.07 using 59 PHA bins.
# Reduced chi-squared =          1.001 for     57 degrees of freedom 
# Null hypothesis probability =   4.725374e-01
 
Photon flux (15-150 keV)    in 9.988 sec: 0.289905 ( -0.0502443  0.0504298 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.30407e-07 ( -4.42415e-08  4.48465e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.296 sec. to    9.692 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.45709     ( -1.81211   0.919579 )
Epeak [keV] : 152.603      (   )
Norm@50keV  : 6.50012E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.49 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     56 degrees of freedom 
# Null hypothesis probability =   4.565716e-01
 
Photon flux (15-150 keV)    in 9.988 sec: 0.290408 ( -0.050851  0.049863 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.28715e-07 ( -4.26538e-08  4.60437e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.296 sec. to    9.692 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.18492   ( 1.18489   1.18489 )
beta        : -1.39333    ( -0.312889   0.313041 )
Epeak [keV] : 19.9942      ( -20.0059 -20.0059 )
Norm@50keV   : 4.72323E-03    ( -0.00274232   0.374894 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.07 using 59 PHA bins.
# Reduced chi-squared =          1.038 for     55 degrees of freedom 
# Null hypothesis probability =   3.981176e-01
 
Photon flux (15-150 keV)    in 9.988 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]    : 15.8623  (-3.51864  5.13304)
R^2/D10^2   : 2.69165E-02  (-0.0164957   0.0373073)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.73 using 59 PHA bins.
# Reduced chi-squared =          1.206 for     57 degrees of freedom 
# Null hypothesis probability =   1.372354e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.401e-08   4.939e-09
25- 50  5.853e-08   1.617e-08
50-150  1.026e-07   3.922e-08
15-150  1.751e-07   5.034e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-81.2159      -199.363)
Norm        : 1.19221       (-0.203147     0.203691)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.49 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     57 degrees of freedom 
# Null hypothesis probability =   4.204514e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.965e-08   1.732e-08
25- 50  5.704e-08   3.224e-08
50-150  1.251e-07   7.116e-08
15-150  2.118e-07   1.202e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.08132        (-6.66784      4.28069)
R1^2/D10^2  : 0.137244        (-0.0813981      27.4268)
kT2 [keV]   : 50.2621        (-36.8167      -54.7047)
R2^2/D10^2  : 5.57994E-04    (-0.000419135   0.0161632)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.30 using 59 PHA bins.
# Reduced chi-squared =          1.060 for     55 degrees of freedom 
# Null hypothesis probability =   3.550773e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.364e-08   1.389e-08
25- 50  5.874e-08   3.286e-08
50-150  1.547e-07   8.779e-08
15-150  2.371e-07   1.193e-07

Peak spectrum fit

Power-law model
Time interval is from    1.140 sec. to    2.140 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63701     ( -0.514756   0.562552 )
Norm@50keV  : 4.13045E-03    ( -0.00139469   0.00132857 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.98 using 59 PHA bins.
# Reduced chi-squared =         0.9295 for     57 degrees of freedom 
# Null hypothesis probability =   6.266505e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.537049 ( -0.160518  0.16065 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.84662e-08 ( -1.32367e-08  1.37487e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.140 sec. to    2.140 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16837     ( -2.92274   1.13594 )
Epeak [keV] : 85.2205      ( -85.2215 -85.2215 )
Norm@50keV  : 7.30035E-03    ( -0.00730029   0.246668 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.79 using 59 PHA bins.
# Reduced chi-squared =         0.9427 for     56 degrees of freedom 
# Null hypothesis probability =   5.970405e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.529036 ( -0.164571  0.163267 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.72628e-08 ( -1.38304e-08  1.44732e-08 ) ergs/cm2
 
Band function
Time interval is from    1.140 sec. to    2.140 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.17028   ( -1.00202   5.94484 )
beta        : -10.0000    ( 10   0 )
Epeak [keV] : 85.4136      ( -67.1302 -85.4136 )
Norm@50keV   : 7.28093E-03    ( -0.0044877   0.246939 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.79 using 59 PHA bins.
# Reduced chi-squared =         0.9599 for     55 degrees of freedom 
# Null hypothesis probability =   5.594207e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.526896 ( 6.4731  -0.159642 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.72414e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.4216  (-4.27526  6.73665)
R^2/D10^2   : 8.94383E-02  (-0.0894105   0.262323)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.19 using 59 PHA bins.
# Reduced chi-squared =         0.9683 for     57 degrees of freedom 
# Null hypothesis probability =   5.431837e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.414e-09   2.170e-09
25- 50  1.216e-08   7.510e-09
50-150  1.410e-08   1.035e-08
15-150  2.968e-08   1.885e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 154.393       (-104.303      -153.734)
Norm        : 2.22715       (-0.687239     1.0509)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.81 using 59 PHA bins.
# Reduced chi-squared =         0.9265 for     57 degrees of freedom 
# Null hypothesis probability =   6.329352e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.706e-09   3.435e-09
25- 50  1.062e-08   6.115e-09
50-150  2.121e-08   1.365e-08
15-150  3.754e-08   2.311e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.35002        (-3.35051      11.756)
R1^2/D10^2  : 10.3038        (-10.2965      -10.2965)
kT2 [keV]   : 17.0168        (-6.31543      -17.0198)
R2^2/D10^2  : 3.47815E-02    (-0.0347595   0.156669)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.74 using 59 PHA bins.
# Reduced chi-squared =         0.9589 for     55 degrees of freedom 
# Null hypothesis probability =   5.615514e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.755e-09   3.421e-09
25- 50  9.862e-09   5.735e-09
50-150  1.878e-08   1.182e-08
15-150  3.440e-08   1.870e-08
Plot creation:
Fri Mar 30 02:18:00 EDT 2018