batgrbproduct analysis for trigger=853882

batgrbproduct Analysis for Trigger=853882

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Aug 19 09:28:24 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger853882/GCN5_download_cron
======================================================================

  Trigger: 00853882      Segment: 000

  BAT Trigger Time: 556288240   [s; MET]
      Trigger Stop: 556288368   [s; MET]
               UTC: 2018-08-18T12:30:18.552260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 104.235169748593   Dec: 39.328619125846  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.17
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    10.17

  Flight Position:   [ source = BAT ]
    RA: 104.235169748593   Dec: 39.328619125846  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 104.227137241559   Dec: 39.3097616039524  [deg; J2000]  
        { 06h 56m 54.5s , +39d 18' 35.1" }
         +/- 1.65306750644118 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.69288938679163 [arcmin] (formal 1-sigma fit error)
    SNR: 14.8345603959692
 
  Angular difference between Flight and Ground position is 1.191302 arcmin
 
  Partial Coding Fraction: 0.890625    [ including projection effects ]

  Duration
     T90: 134.40399992466 +/- 9.78261668948041
        Measured from: -86.7399998903275
                   to: 47.6640000343323     [s; relative to TRIGTIME]
     T50: 110.508000016212 +/- 4.48591761445796
        Measured from: -80.9519999027252
                   to: 29.5560001134872     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -82.1119999885559     
                   to: -81.1119999885559     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -93.5800000429153     
                   to: 62.7439999580383     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.229164   1.667712   0.888055   0.160156
           0.087607   0.090796   0.078267   0.068091 [error]
 Peak      0.044197   0.065864   0.024040   0.016869
           0.007490   0.008201   0.006816   0.005697 [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 4.12e-07 6.43e-07 7.55e-07 1.72e-06 2.31e-06 3.52e-06   erg/cm2
              Error 4.33e-08 4.34e-08 7.58e-08 3.53e-07 1.78e-07 4.23e-07   erg/cm2
Peak flux Power-law 4.49e-01 3.91e-01 2.34e-01 2.10e-01 1.16e+00 1.28e+00   ph/cm2/s
              Error 1.10e-01 6.35e-02 5.64e-02 9.94e-02 1.89e-01 2.12e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.79e-07 6.93e-07 7.57e-07 6.15e-07 2.17e-06 2.44e-06   erg/cm2
              Error 5.00e-08 5.84e-08 8.46e-08 4.97e-07 2.06e-07 5.36e-07   erg/cm2
Peak flux Cutoff-PL 4.52e-01 3.92e-01 2.32e-01 2.05e-01 1.16e+00 1.28e+00   ph/cm2/s
              Error 1.10e-01 6.43e-02 5.64e-02 1.37e-01 1.88e-01 2.31e-01   ph/cm2/s
 
Fluence        Band 3.63e-07 7.14e-07 7.20e-07 1.16e-06 2.20e-06 2.95e-06   erg/cm2
              Error 5.31e-08 4.85e-08 8.43e-08 -------- 1.46e-07 --------   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    1.768    0.120    -      -           1.60e-03 1.19e-04   47.270 57
CPL   1.088    0.554      60.6   30.3      3.76e-03 2.94e-03   42.020 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.744    0.290    -      -           8.63e-03 1.60e-03   63.600 57
CPL   2.013   -0.368       5.5    0.0      6.08e-03 0.00e+00   63.470 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: 159.936000 sec.
T50 in the 50-300 keV band: 114.816000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  156.324  -93.580   62.744
T90   134.404  -86.740   47.664
T50   110.508  -80.952   29.556
Peak    1.000  -82.112  -81.112

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  104.2271 +39.3098 0.0129   29.4   -8.7       2.8008    14.8  TRIG_00853882       
------------------------------------------
 
Foreground time interval of the image:
-77.499  62.744 (delta_t = 140.243 [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  -93.580 sec. to   62.744 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76754     ( -0.119098   0.121457 )
Norm@50keV  : 1.60376E-03    ( -0.000119767   0.000118637 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.27 using 59 PHA bins.
# Reduced chi-squared =         0.8293 for     57 degrees of freedom 
# Null hypothesis probability =   8.174012e-01
 
Photon flux (15-150 keV)    in 156.3 sec: 0.218275 ( -0.0148856  0.0148994 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.31085e-06 ( -1.77205e-07  1.78845e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -93.580 sec. to   62.744 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08819     ( -0.593072   0.51524 )
Epeak [keV] : 60.5851      ( -11.524 48.9768 )
Norm@50keV  : 3.76033E-03    ( -0.00176173   0.00410939 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.02 using 59 PHA bins.
# Reduced chi-squared =         0.7503 for     56 degrees of freedom 
# Null hypothesis probability =   9.171262e-01
 
Photon flux (15-150 keV)    in 156.3 sec: 0.211691 ( -0.015685  0.015666 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.16869e-06 ( -2.04003e-07  2.07269e-07 ) ergs/cm2
 
Band function
Time interval is from  -93.580 sec. to   62.744 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.338787   ( -1.07938   3.94938 )
beta        : -2.12915    ( 2.12639   0.292878 )
Epeak [keV] : 43.8975      ( -15.7983 32.6325 )
Norm@50keV   : 1.14787E-02    ( -0.0114683   12.8484 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.34 using 59 PHA bins.
# Reduced chi-squared =         0.7335 for     55 degrees of freedom 
# Null hypothesis probability =   9.305902e-01
 
Photon flux (15-150 keV)    in 156.3 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.19667e-06 ( -2.19558e-06  -9.86722e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.7727  (-0.909919  1.00178)
R^2/D10^2   : 5.65206E-02  (-0.0148845   0.0198478)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.50 using 59 PHA bins.
# Reduced chi-squared =          1.325 for     57 degrees of freedom 
# Null hypothesis probability =   5.102570e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.585e-07   3.298e-08
25- 50  7.952e-07   6.072e-08
50-150  6.541e-07   1.071e-07
15-150  1.708e-06   1.374e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 105.178       (-23.9555      36.8431)
Norm        : 0.954657       (-0.0863945     0.099643)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.32 using 59 PHA bins.
# Reduced chi-squared =         0.7425 for     57 degrees of freedom 
# Null hypothesis probability =   9.265418e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.899e-07   4.415e-08
25- 50  6.810e-07   5.471e-08
50-150  1.135e-06   3.605e-07
15-150  2.206e-06   3.962e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.66404        (-1.69838      1.59911)
R1^2/D10^2  : 0.195642        (-0.0852704      0.223688)
kT2 [keV]   : 25.0176        (-6.97142      17.3572)
R2^2/D10^2  : 2.24041E-03    (-0.001869   0.00628435)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.58 using 59 PHA bins.
# Reduced chi-squared =         0.7559 for     55 degrees of freedom 
# Null hypothesis probability =   9.094000e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.521e-07   8.190e-08
25- 50  7.254e-07   1.590e-07
50-150  1.118e-06   5.184e-07
15-150  2.196e-06   6.894e-07

Peak spectrum fit

Power-law model
Time interval is from  -82.112 sec. to  -81.112 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.74407     ( -0.284361   0.294874 )
Norm@50keV  : 8.63142E-03    ( -0.00162284   0.00157535 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.60 using 59 PHA bins.
# Reduced chi-squared =          1.116 for     57 degrees of freedom 
# Null hypothesis probability =   2.552599e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.16458 ( -0.188574  0.188602 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.96731e-08 ( -1.52239e-08  1.55979e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -82.112 sec. to  -81.112 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01298     ( -1.27726   -2.01298 )
Epeak [keV] : 5.52169      (   )
Norm@50keV  : 6.08254E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.47 using 59 PHA bins.
# Reduced chi-squared =          1.133 for     56 degrees of freedom 
# Null hypothesis probability =   2.300616e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.16477 ( -0.188099  0.18808 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.91683e-08 ( -1.67254e-08  1.58762e-08 ) ergs/cm2
 
Band function
Time interval is from  -82.112 sec. to  -81.112 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.79712   ( -5.921   -4.79712 )
beta        : -2.20916    ( -0.642109   0.45937 )
Epeak [keV] : 28.1997      ( -9.0883 4.8055 )
Norm@50keV   : 433.811    ( -68.727   6193.93 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.80 using 59 PHA bins.
# Reduced chi-squared =          1.087 for     55 degrees of freedom 
# Null hypothesis probability =   3.057890e-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]    : 9.05236  (-1.41107  1.80172)
R^2/D10^2   : 0.817275  (-0.414402   0.752963)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.01 using 59 PHA bins.
# Reduced chi-squared =          1.228 for     57 degrees of freedom 
# Null hypothesis probability =   1.155133e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.308e-08   3.430e-09
25- 50  2.805e-08   7.245e-09
50-150  1.089e-08   4.999e-09
15-150  5.202e-08   1.352e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.4392       (-44.2175      -99.6511)
Norm        : 5.17125       (-1.10775     1.4333)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.53 using 59 PHA bins.
# Reduced chi-squared =          1.132 for     57 degrees of freedom 
# Null hypothesis probability =   2.301732e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.352e-08   3.046e-09
25- 50  2.335e-08   7.075e-09
50-150  3.771e-08   2.081e-08
15-150  7.457e-08   2.680e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.82543        (-1.22492      1.54222)
R1^2/D10^2  : 1.30145        (-0.712058      1.65144)
kT2 [keV]   : 199.737        (-199.737      -199.737)
R2^2/D10^2  : 1.52148E-04    (-6.08897e-05   0.00364843)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.50 using 59 PHA bins.
#Fit statistic : Chi-Squared =          53.38 using 59 PHA bins.
# Reduced chi-squared =         0.9728 for     55 degrees of freedom 
# Reduced chi-squared =         0.9706 for     55 degrees of freedom 
# Null hypothesis probability =   5.319505e-01
# Null hypothesis probability =   5.366943e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.449e-08   5.472e-09
25- 50  2.522e-08   1.047e-08
50-150  4.736e-08   3.667e-08
15-150  8.707e-08   4.199e-08
Plot creation:
Sun Aug 19 09:32:41 EDT 2018