batgrbproduct analysis for trigger=773509

batgrbproduct Analysis for Trigger=773509

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Sep 22 17:29:43 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger773509/GCN5_download_cron
======================================================================

  Trigger: 00773509      Segment: 000

  BAT Trigger Time: 527696948.224   [s; MET]
      Trigger Stop: 527696952.32   [s; MET]
               UTC: 2017-09-21T14:28:48.502900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 26.8495479369481   Dec: 30.8742207954133  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.2
     Image Trigger?:     NO
     Rate S/N Ratio:     16.8819430161341  [ if not an image trigger ]
     Image S/N Ratio:    10.2

  Flight Position:   [ source = BAT ]
    RA: 26.8495479369481   Dec: 30.8742207954133  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 26.8390787945212   Dec: 30.8779566156432  [deg; J2000]  
        { 01h 47m 21.4s , +30d 52' 40.6" }
         +/- 1.84221512711994 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.79923537976405 [arcmin] (formal 1-sigma fit error)
    SNR: 12.7075183498901
 
  Angular difference between Flight and Ground position is 0.583867 arcmin
 
  Partial Coding Fraction: 0.8671875    [ including projection effects ]

  Duration
     T90: 28.9279999732971 +/- 5.9833154629927
        Measured from: -18.4239998459816
                   to: 10.5040001273155     [s; relative to TRIGTIME]
     T50: 7.80800002813339 +/- 5.94959091543058
        Measured from: -1.91199988126755
                   to: 5.89600014686584     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.74000000953674     
                   to: 3.74000000953674     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -21.8159999847412     
                   to: 13     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.362098   0.534414   0.244627   0.038541
           0.041441   0.042656   0.037130   0.032303 [error]
 Peak      0.038756   0.030203   0.028643   0.011089
           0.007225   0.007723   0.006848   0.005712 [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 1.17e-07 1.85e-07 2.19e-07 5.03e-07 6.67e-07 1.02e-06   erg/cm2
              Error 1.71e-08 1.87e-08 3.42e-08 1.56e-07 8.11e-08 1.91e-07   erg/cm2
Peak flux Power-law 2.95e-01 2.72e-01 1.73e-01 1.70e-01 8.10e-01 9.09e-01   ph/cm2/s
              Error 1.01e-01 5.84e-02 5.83e-02 1.17e-01 1.73e-01 2.05e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.00e-07 2.21e-07 2.06e-07 6.29e-08 5.78e-07 5.91e-07   erg/cm2
              Error 2.00e-08 2.77e-08 4.45e-08 -------- 8.55e-08 1.14e-07   erg/cm2
Peak flux Cutoff-PL 2.93e-01 2.72e-01 1.74e-01 1.71e-01 8.10e-01 9.10e-01   ph/cm2/s
              Error 1.01e-01 5.82e-02 5.12e-02 1.55e-01 1.73e-01 2.08e-01   ph/cm2/s
 
Fluence        Band 9.86e-08 2.22e-07 2.00e-07 1.37e-07 5.88e-07 6.59e-07   erg/cm2
              Error 2.06e-08 2.97e-08 4.58e-08 1.62e-07 -------- 1.98e-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    1.756    0.173    -      -           2.08e-03 2.43e-04   58.450 57
CPL   0.152    1.022      49.1   10.4      1.68e-02 3.78e-02   47.670 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.649    0.430    -      -           6.21e-03 1.56e-03   55.790 57
CPL   2.623    0.947     202.6    0.0      2.06e-03 0.00e+00   55.440 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: 7.808000 sec.
T50 in the 50-300 keV band: 3.776000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   34.816  -21.816   13.000
T90    28.928  -18.424   10.504
T50     7.808   -1.912    5.896
Peak    1.000    2.740    3.740

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   26.8391 +30.8780 0.0152   14.0   86.5       1.1107    12.7  TRIG_00773509       
------------------------------------------
 
Foreground time interval of the image:
-21.816  13.000 (delta_t =  34.816 [sec])
Background time interval of the image:
-239.224 -21.816 (delta_t = 217.408 [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  -21.816 sec. to   13.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75583     ( -0.170187   0.176406 )
Norm@50keV  : 2.07552E-03    ( -0.000244372   0.000241025 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.45 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     57 degrees of freedom 
# Null hypothesis probability =   4.218580e-01
 
Photon flux (15-150 keV)    in 34.82 sec: 0.281249 ( -0.0286016  0.0286077 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.66664e-07 ( -8.03701e-08  8.19294e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -21.816 sec. to   13.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.151999     ( -1.14332   0.901154 )
Epeak [keV] : 49.0521      ( -7.19796 13.6262 )
Norm@50keV  : 1.67833E-02    ( -0.0167834   0.0588426 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.67 using 59 PHA bins.
# Reduced chi-squared =         0.8513 for     56 degrees of freedom 
# Null hypothesis probability =   7.781076e-01
 
Photon flux (15-150 keV)    in 34.82 sec: 0.266389 ( -0.029404  0.029511 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.78015e-07 ( -8.17225e-08  8.93342e-08 ) ergs/cm2
 
Band function
Time interval is from  -21.816 sec. to   13.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.192678   ( -0.715555   1.35171 )
beta        : -9.37167    ( 9.37167   19.3717 )
Epeak [keV] : 49.9486      ( -9.16399 12.2795 )
Norm@50keV   : 1.56160E-02    ( -0.0103445   1.53528 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.70 using 59 PHA bins.
# Reduced chi-squared =         0.8673 for     55 degrees of freedom 
# Null hypothesis probability =   7.470273e-01
 
Photon flux (15-150 keV)    in 34.82 sec: 0.266402 ( 6.7336  -0.029376 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.88378e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.4324  (-1.16359  1.31689)
R^2/D10^2   : 8.50782E-02  (-0.0283775   0.0414903)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.10 using 59 PHA bins.
# Reduced chi-squared =         0.9315 for     57 degrees of freedom 
# Null hypothesis probability =   6.222005e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.144e-08   1.471e-08
25- 50  2.418e-07   2.956e-08
50-150  1.837e-07   4.163e-08
15-150  5.069e-07   6.302e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 96.8754       (-28.4458      52.9058)
Norm        : 1.26919       (-0.163987     0.193427)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.24 using 59 PHA bins.
# Reduced chi-squared =         0.9164 for     57 degrees of freedom 
# Null hypothesis probability =   6.540862e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.155e-07   1.644e-08
25- 50  1.984e-07   2.356e-08
50-150  3.157e-07   1.363e-07
15-150  6.296e-07   1.462e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.39187        (-7.20233      3.5936)
R1^2/D10^2  : 0.226614        (-0.129342      -0.218126)
kT2 [keV]   : 17.1266        (-17.1162      88.7354)
R2^2/D10^2  : 1.20608E-02    (-0.0103497   0.0664842)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.83 using 59 PHA bins.
# Reduced chi-squared =         0.8696 for     55 degrees of freedom 
# Null hypothesis probability =   7.426388e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.807e-08   5.345e-08
25- 50  2.223e-07   1.163e-07
50-150  2.562e-07   1.392e-07
15-150  5.766e-07   2.923e-07

Peak spectrum fit

Power-law model
Time interval is from    2.740 sec. to    3.740 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64878     ( -0.412791   0.446309 )
Norm@50keV  : 6.20790E-03    ( -0.00161498   0.00150836 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.79 using 59 PHA bins.
# Reduced chi-squared =         0.9788 for     57 degrees of freedom 
# Null hypothesis probability =   5.204056e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.810274 ( -0.172754  0.172761 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.77408e-08 ( -1.5443e-08  1.59858e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.740 sec. to    3.740 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.62252     ( -1.68586   0.208861 )
Epeak [keV] : 202.618      (   )
Norm@50keV  : 2.06059E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.44 using 59 PHA bins.
# Reduced chi-squared =         0.9900 for     56 degrees of freedom 
# Null hypothesis probability =   4.960623e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.809872 ( -0.172563  0.172759 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.75997e-08 ( -1.52989e-08  1.56604e-08 ) ergs/cm2
 
Band function
Time interval is from    2.740 sec. to    3.740 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.32168   ( 1.3217   1.3217 )
beta        : -1.64881    ( 1.64882   0.412764 )
Epeak [keV] : 22.8766      ( -22.8733 -22.8733 )
Norm@50keV   : 1.41158E-02    ( -0.0141162   0.252644 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.79 using 59 PHA bins.
# Reduced chi-squared =          1.014 for     55 degrees of freedom 
# Null hypothesis probability =   4.447755e-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]    : 12.8995  (-6.6651  9.72205)
R^2/D10^2   : 0.141080  (-0.120612   1.96265)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.72 using 59 PHA bins.
# Reduced chi-squared =          1.223 for     57 degrees of freedom 
# Null hypothesis probability =   1.201215e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.705e-09   3.243e-09
25- 50  1.774e-08   9.681e-09
50-150  1.052e-08   6.831e-09
15-150  3.496e-08   1.814e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 189.496       (-126.336      -189.52)
Norm        : 3.27037       (-0.708373     1.0165)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.90 using 59 PHA bins.
# Reduced chi-squared =         0.9983 for     57 degrees of freedom 
# Null hypothesis probability =   4.786539e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.196e-09   4.716e-09
25- 50  1.567e-08   8.925e-09
50-150  3.379e-08   1.958e-08
15-150  5.766e-08   3.312e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.10700        (-1.54819      2.05113)
R1^2/D10^2  : 3.67199        (-2.75392      8.05019)
kT2 [keV]   : 31.2853        (-11.6429      45.7784)
R2^2/D10^2  : 6.28403E-03    (-0.00563413   0.0120067)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.64 using 59 PHA bins.
# Reduced chi-squared =         0.9570 for     55 degrees of freedom 
# Null hypothesis probability =   5.655112e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.065e-08   6.080e-09
25- 50  1.256e-08   6.720e-09
50-150  4.025e-08   2.520e-08
15-150  6.346e-08   3.595e-08
Plot creation:
Fri Sep 22 17:57:29 EDT 2017