batgrbproduct analysis for trigger=780207

batgrbproduct Analysis for Trigger=780207

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Oct 20 12:11:26 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger780207/GCN5_download_cron
======================================================================

  Trigger: 00780207      Segment: 000

  BAT Trigger Time: 530083259.668   [s; MET]
      Trigger Stop: 530083259.684   [s; MET]
               UTC: 2017-10-19T05:20:39.804720    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 251.803894225799   Dec: -45.884152200453  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    22.46
     Image Trigger?:     NO
     Rate S/N Ratio:     255.998046867549  [ if not an image trigger ]
     Image S/N Ratio:    22.46

  Flight Position:   [ source = BAT ]
    RA: 251.803894225799   Dec: -45.884152200453  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 251.80927752734   Dec: -45.8746981334368  [deg; J2000]  
        { 16h 47m 14.2s , -45d 52' 28.9" }
         +/- 0.666751293768696 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.268464322311605 [arcmin] (formal 1-sigma fit error)
    SNR: 54.2748422544608
 
  Angular difference between Flight and Ground position is 0.610187 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 0.135999917984009 +/- 0.0164923981003274
        Measured from: -0.103999853134155
                   to: 0.0320000648498535     [s; relative to TRIGTIME]
     T50: 0.015999972820282 +/- 0.00400000810623169
        Measured from: 1.19209289550781e-07
                   to: 0.0160000920295715     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.533999979496002     
                   to: 0.466000020503998     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.12799996137619     
                   to: 0.0559999942779541     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.387735   0.345623   0.095797   0.002692
           0.009400   0.008782   0.005103   0.001998 [error]
 Peak      0.393161   0.362068   0.100240   0.008178
           0.011491   0.010522   0.006906   0.004337 [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 1.39e-07 1.20e-07 7.14e-08 6.37e-08 3.58e-07 3.94e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Power-law 4.37e+00 2.38e+00 8.08e-01 3.57e-01 7.75e+00 7.91e+00   ph/cm2/s
              Error 2.67e-01 9.76e-02 5.50e-02 4.54e-02 3.45e-01 3.43e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.12e-07 1.42e-07 7.11e-08 1.12e-08 3.35e-07 3.37e-07   erg/cm2
              Error 8.53e-09 5.99e-09 5.54e-09 3.91e-09 1.37e-08 1.43e-08   erg/cm2
Peak flux Cutoff-PL 3.72e+00 2.69e+00 7.45e-01 7.11e-02 7.22e+00 7.23e+00   ph/cm2/s
              Error 3.18e-01 1.32e-01 7.21e-02 3.45e-02 3.72e-01 3.74e-01   ph/cm2/s
 
Fluence        Band 1.11e-07 1.42e-07 7.09e-08 1.12e-08 3.35e-07 3.36e-07   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    2.753    0.000    -      -           1.79e-01 0.00e+00  140.080 57
CPL   1.034    0.359      24.4    4.2      1.61e+00 7.90e-01   40.780 56
 
The chi2 of BB fit is 127.80 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.557    0.079    -      -           3.81e-02 1.98e-03   87.260 57
CPL   1.092    0.457      24.8    5.3      2.72e-01 1.85e-01   44.390 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: 0.064000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.184   -0.128    0.056
T90     0.136   -0.104    0.032
T50     0.016    0.000    0.016
Peak    1.000   -0.534    0.466

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  251.8093 -45.8747 0.0035    0.0  112.2       0.8273    54.3  TRIG_00780207       
------------------------------------------
 
Foreground time interval of the image:
 -0.128   0.056 (delta_t =   0.184 [sec])
Background time interval of the image:
-239.668 -187.238 (delta_t =  52.430 [sec])
-185.668  -0.128 (delta_t = 185.540 [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   -0.128 sec. to    0.056 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.75267     (     )
Norm@50keV  : 0.179499    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         140.08 using 59 PHA bins.
# Reduced chi-squared =         2.4576 for     57 degrees of freedom 
# Null hypothesis probability =   6.035212e-09
 
Photon flux (15-150 keV)    in 0.184 sec: 41.4983 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.58071e-07 ( 0  0 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.128 sec. to    0.056 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03447     ( -0.374956   0.343866 )
Epeak [keV] : 24.4291      ( -4.87101 3.57105 )
Norm@50keV  : 1.61219    ( -0.573774   1.00589 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.78 using 59 PHA bins.
# Reduced chi-squared =         0.7283 for     56 degrees of freedom 
# Null hypothesis probability =   9.368795e-01
 
Photon flux (15-150 keV)    in 0.184 sec: 37.9155 ( -1.7881  1.7989 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.35147e-07 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -0.128 sec. to    0.056 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.04658   ( -0.329444   0.132251 )
beta        : -9.37167    ( 9.37167   19.3714 )
Epeak [keV] : 24.3236      ( -4.67759 3.57561 )
Norm@50keV   : 1.58481    ( -0.543311   1.06505 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.79 using 59 PHA bins.
# Reduced chi-squared =         0.7416 for     55 degrees of freedom 
# Null hypothesis probability =   9.233823e-01
 
Photon flux (15-150 keV)    in 0.184 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.34518e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.67382  (  )
R^2/D10^2   : 29.5959  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         127.80 using 59 PHA bins.
# Reduced chi-squared =         2.2421 for     57 degrees of freedom 
# Null hypothesis probability =   2.385993e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.816e-08   5.060e-09
25- 50  1.567e-07   5.805e-09
50-150  5.331e-08   5.134e-09
15-150  2.881e-07   1.104e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 32.2300       (-2.01505      2.16229)
Norm        : 302.884       (-22.3215     24.1931)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.04 using 59 PHA bins.
# Reduced chi-squared =         0.7551 for     57 degrees of freedom 
# Null hypothesis probability =   9.144244e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.175e-07   6.072e-09
25- 50  1.395e-07   5.042e-09
50-150  8.374e-08   6.514e-09
15-150  3.407e-07   1.251e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.23016        (-0.690157      0.712423)
R1^2/D10^2  : 163.209        (-61.508      121.366)
kT2 [keV]   : 12.7113        (-1.22758      1.57417)
R2^2/D10^2  : 3.64710    (-1.76754   2.76046)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.46 using 59 PHA bins.
# Reduced chi-squared =         0.7175 for     55 degrees of freedom 
# Null hypothesis probability =   9.434485e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.101e-07   1.449e-08
25- 50  1.408e-07   1.755e-08
50-150  8.109e-08   1.386e-08
15-150  3.320e-07   3.505e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.534 sec. to    0.466 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.55686     ( -0.0776408   0.0793784 )
Norm@50keV  : 3.80974E-02    ( -0.00199035   0.00197699 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.26 using 59 PHA bins.
# Reduced chi-squared =          1.531 for     57 degrees of freedom 
# Null hypothesis probability =   6.087500e-03
 
Photon flux (15-150 keV)    in 1 sec: 7.75258 ( -0.34473  0.345794 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.87085e-07 ( -1.6271e-08  1.62928e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.534 sec. to    0.466 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09228     ( -0.481659   0.433243 )
Epeak [keV] : 24.7700      ( -6.58591 4.10348 )
Norm@50keV  : 0.271669    ( -0.119441   0.250422 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.39 using 59 PHA bins.
# Reduced chi-squared =         0.7927 for     56 degrees of freedom 
# Null hypothesis probability =   8.685066e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.22295 ( -0.37069  0.37246 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.51699e-07 ( -1.773e-08  1.8046e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.534 sec. to    0.466 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.09287   ( -0.256296   0.189905 )
beta        : -10.00000    ( 10   2.28457e-06 )
Epeak [keV] : 24.7606      ( -1.78694 4.10805 )
Norm@50keV   : 0.271410    ( -0.119163   0.250671 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.39 using 59 PHA bins.
# Reduced chi-squared =         0.8071 for     55 degrees of freedom 
# Null hypothesis probability =   8.462658e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.56083e-07 ( -3.56076e-07  -1.7785e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.46597  (-0.347235  0.36005)
R^2/D10^2   : 6.29874  (-1.04832   1.26378)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         102.37 using 59 PHA bins.
# Reduced chi-squared =         1.7960 for     57 degrees of freedom 
# Null hypothesis probability =   2.137549e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.487e-08   6.005e-09
25- 50  1.635e-07   6.450e-09
50-150  5.154e-08   6.160e-09
15-150  2.999e-07   1.280e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 34.4129       (-2.80159      3.13165)
Norm        : 54.4419       (-4.66984     5.13173)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.11 using 59 PHA bins.
# Reduced chi-squared =         0.7913 for     57 degrees of freedom 
# Null hypothesis probability =   8.726186e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.181e-07   6.800e-09
25- 50  1.450e-07   5.900e-09
50-150  9.434e-08   9.775e-09
15-150  3.574e-07   1.640e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.66019        (-1.02231      0.984784)
R1^2/D10^2  : 23.5719        (-9.60916      23.5404)
kT2 [keV]   : 13.8241        (-2.40168      4.29734)
R2^2/D10^2  : 0.452460    (-0.335223   0.800885)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.04 using 59 PHA bins.
# Reduced chi-squared =         0.8189 for     55 degrees of freedom 
# Null hypothesis probability =   8.287471e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.101e-07   1.737e-08
25- 50  1.476e-07   2.255e-08
50-150  8.971e-08   3.583e-08
15-150  3.474e-07   7.205e-08
Plot creation:
Fri Oct 20 12:15:48 EDT 2017