batgrbproduct analysis for trigger=808755

batgrbproduct Analysis for Trigger=808755

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Feb  6 19:29:27 EST 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger808755/GCN5_download_cron
======================================================================

  Trigger: 00808755      Segment: 000

  BAT Trigger Time: 539551652.392   [s; MET]
      Trigger Stop: 539551652.456   [s; MET]
               UTC: 2018-02-05T19:27:11.960700    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 251.749289969315   Dec: -45.85038787502  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.73
     Image Trigger?:     NO
     Rate S/N Ratio:     22.4722050542442  [ if not an image trigger ]
     Image S/N Ratio:    9.73

  Flight Position:   [ source = BAT ]
    RA: 251.749289969315   Dec: -45.85038787502  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 251.81786016268   Dec: -45.8430547517579  [deg; J2000]  
        { 16h 47m 16.3s , -45d 50' 35.0" }
         +/- 5.16658063448282 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.2687363315199 [arcmin] (formal 1-sigma fit error)
    SNR: 2.91243773174693
 
  Angular difference between Flight and Ground position is 2.899457 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 365.248000025749 +/- 170.424027063214
        Measured from: -114.52799987793
                   to: 250.72000014782     [s; relative to TRIGTIME]
     T50: 365.248000025749 +/- 181.080769703374
        Measured from: -114.52799987793
                   to: 250.72000014782     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 249.796000003815     
                   to: 250.796000003815     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -114.527999997139     
                   to: 250.72000002861     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.097518   0.087331   0.132560   0.052920
           0.135847   0.119700   0.097659   0.082902 [error]
 Peak      0.047387   0.082200   0.025086  -0.001179
           0.007804   0.007631   0.005560   0.004473 [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 1.83e-09 1.10e-08 5.72e-081.56e-08 1.33e-06 1.85e-077.28e-08 1.40e-06   erg/cm2
              Error 2.33e-08 3.53e-08 7.38e-08 3.69e-06 2.12e-07 3.72e-06   erg/cm2
Peak flux Power-law 5.70e-01 4.10e-01 1.95e-01 1.31e-01 1.24e+00 1.31e+00   ph/cm2/s
              Error 1.00e-01 5.63e-02 4.09e-02 4.89e-02 1.69e-01 1.79e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.95e-09 1.43e-08 6.01e-08 1.03e-06 1.86e-07 1.08e-06   erg/cm2
              Error 2.26e-08 4.42e-08 9.83e-08 5.46e-06 2.14e-07 4.06e-05   erg/cm2
Peak flux Cutoff-PL 4.28e-01 6.00e-01 1.66e-01 4.11e-03 1.20e+00 1.20e+00   ph/cm2/s
              Error 1.15e-01 8.89e-02 5.69e-02 8.15e-03 1.66e-01 1.66e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 4.34e-01 5.94e-01 1.72e-01 5.15e-03 1.20e+00 1.20e+00   ph/cm2/s
              Error 1.14e-01 8.81e-02 5.56e-02 -------- 1.61e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.371    0.000    -      -           2.24e-05 4.60e-05   53.980 57
CPL  -3.077    0.000    9999.2    0.0      8.40e-07 0.00e+00   53.830 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.069    0.213    -      -           7.99e-03 1.33e-03   92.330 57
CPL  -1.452    1.699      38.7    4.3      9.92e-01 8.98e+00   65.580 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  365.248 -114.528  250.720
T90   365.248 -114.528  250.720
T50   365.248 -114.528  250.720
Peak    1.000  249.796  250.796

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  251.8179 -45.8431 0.0663    1.1 -111.7       0.5225     2.9  TRIG_00808755       
------------------------------------------
 
Foreground time interval of the image:
-114.528 -36.696 (delta_t =  77.832 [sec])
-35.392   7.509 (delta_t =  42.901 [sec])
Background time interval of the image:
-239.392 -114.528 (delta_t = 124.864 [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
Multiple GTIs in the spectrum
tstart tstop
-114.528000 -36.696100
-35.392000 55.168000
56.608000 250.720000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.371400     ( 0.376293   0.376293 )
Norm@50keV  : 2.24433E-05    ( -2.23333e-05   6.96484e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.98 using 59 PHA bins.
# Reduced chi-squared =         0.9471 for     57 degrees of freedom 
# Null hypothesis probability =   5.889885e-01
 
Photon flux (15-150 keV)    in 362.5 sec: 3.52734E-03 8.75565E-04 ( -0.000935536  0.00959244 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.02584e-19 ( -7.59579e-08  3.48009e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-114.528000 -36.696100
-35.392000 55.168000
56.608000 250.720000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -3.07672     ( 3.07562   3.07562 )
Epeak [keV] : 9999.17      ( -9999.13 -9999.13 )
Norm@50keV  : 8.40383E-07    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.83 using 59 PHA bins.
# Reduced chi-squared =         0.9613 for     56 degrees of freedom 
# Null hypothesis probability =   5.574374e-01
 
Photon flux (15-150 keV)    in 362.5 sec: 3.74852E-03 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.85678e-07 ( -1.85678e-07  2.43134e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-114.528000 -36.696100
-35.392000 55.168000
56.608000 250.720000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.151685   ( 0.1456   0.1456 )
beta        : 0.374114    ( -0.378597   -0.378597 )
Epeak [keV] : 15.0792      ( -15.1554 -15.1554 )
Norm@50keV   : 4.08995E-05    ( -4.09803e-05   85.55 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.98 using 59 PHA bins.
# Reduced chi-squared =         0.9815 for     55 degrees of freedom 
# Null hypothesis probability =   5.135037e-01
 
Photon flux (15-150 keV)    in 362.5 sec: 3.66981 ( 3.33019  -0.50012 ) 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]    : 200.000  (-200  -200)
R^2/D10^2   : 1.79991E-06  (-1.79802e-06   -1.79802e-06)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.02 using 59 PHA bins.
# Reduced chi-squared =         0.9476 for     57 degrees of freedom 
# Null hypothesis probability =   5.877793e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.766e-09   1.308e-09
25- 50  1.290e-08   9.635e-09
50-150  1.651e-07   1.183e-07
15-150  1.798e-07   1.064e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.349       (-199.356      -199.356)
Norm        : 1.60040E-02       (-0.0160476     0.0299765)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.81 using 59 PHA bins.
# Reduced chi-squared =         0.9615 for     57 degrees of freedom 
# Null hypothesis probability =   5.577544e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.279e-09   1.373e-11
25- 50  5.889e-11   0.000e+00
50-150  9.367e-16   0.000e+00
15-150  5.337e-09   1.241e-21
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.60598        (-1.55463      -1.55463)
R1^2/D10^2  : 13.4188        (-24.9486      -24.9486)
kT2 [keV]   : 198.832        (-198.975      -198.975)
R2^2/D10^2  : 1.78003E-06    (-1.78299e-06   -1.78299e-06)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.06 using 59 PHA bins.
#Fit statistic : Chi-Squared =          53.94 using 59 PHA bins.
# Reduced chi-squared =         0.9830 for     55 degrees of freedom 
# Reduced chi-squared =         0.9807 for     55 degrees of freedom 
# Null hypothesis probability =   5.104278e-01
# Null hypothesis probability =   5.152312e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Peak spectrum fit

Power-law model
Time interval is from  249.796 sec. to  250.796 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.06901     ( -0.207266   0.219343 )
Norm@50keV  : 7.98818E-03    ( -0.0013341   0.00131978 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          92.33 using 59 PHA bins.
# Reduced chi-squared =          1.620 for     57 degrees of freedom 
# Null hypothesis probability =   2.123607e-03
 
Photon flux (15-150 keV)    in 1 sec: 1.23788 ( -0.169353  0.169447 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.39875e-08 ( -1.14676e-08  1.17112e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  249.796 sec. to  250.796 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.45200     ( -1.98029   1.41684 )
Epeak [keV] : 38.6729      ( -4.03889 4.65692 )
Norm@50keV  : 0.992423    ( -1.22325   16.7407 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.58 using 59 PHA bins.
# Reduced chi-squared =          1.171 for     56 degrees of freedom 
# Null hypothesis probability =   1.787143e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.19785 ( -0.16505  0.16614 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.47656e-08 ( -9.3842e-09  9.9385e-09 ) ergs/cm2
 
Band function
Time interval is from  249.796 sec. to  250.796 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.55175   ( -1.21777   2.74334 )
beta        : -10.0000    ( 10   2.30926e-14 )
Epeak [keV] : 38.6105      ( -4.04914 4.63498 )
Norm@50keV   : 1.14031    ( -1.14018   16.8016 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.56 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     55 degrees of freedom 
# Null hypothesis probability =   1.559229e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.20427 ( 5.79573  -0.16317 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.60642e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.93894  (-1.03724  1.1516)
R^2/D10^2   : 0.680438  (-0.241768   0.365714)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.64 using 59 PHA bins.
# Reduced chi-squared =          1.152 for     57 degrees of freedom 
# Null hypothesis probability =   2.023139e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.366e-08   2.695e-09
25- 50  3.367e-08   5.130e-09
50-150  1.726e-08   5.815e-09
15-150  6.459e-08   1.084e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 53.1463       (-13.2334      20.5073)
Norm        : 7.16170       (-1.29988     1.59569)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.66 using 59 PHA bins.
# Reduced chi-squared =          1.398 for     57 degrees of freedom 
# Null hypothesis probability =   2.539422e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.774e-08   2.950e-09
25- 50  2.603e-08   4.720e-09
50-150  2.674e-08   9.585e-09
15-150  7.051e-08   1.397e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.81002        (-7.67593      -7.67593)
R1^2/D10^2  : 0.260910        (-0.236      -0.236)
kT2 [keV]   : 10.3494        (-10.2813      -10.2813)
R2^2/D10^2  : 0.499460    (-0.534404   -0.534404)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.63 using 59 PHA bins.
# Reduced chi-squared =          1.193 for     55 degrees of freedom 
# Null hypothesis probability =   1.545772e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.384e-08   8.650e-06
25- 50  3.346e-08   7.635e-05
50-150  1.769e-08   1.714e-03
15-150  6.500e-08   1.631e-03
Plot creation:
Tue Feb  6 19:35:35 EST 2018