batgrbproduct analysis for trigger=770981

batgrbproduct Analysis for Trigger=770981

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Sep  7 03:51:55 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger770981/GCN5_download_cron
======================================================================

  Trigger: 00770981      Segment: 000

  BAT Trigger Time: 526375597.248   [s; MET]
      Trigger Stop: 526375598.272   [s; MET]
               UTC: 2017-09-06T07:26:17.605220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 128.703619534125   Dec: 70.7817005714058  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.09
     Image Trigger?:     NO
     Rate S/N Ratio:     21.1187120819429  [ if not an image trigger ]
     Image S/N Ratio:    11.09

  Flight Position:   [ source = BAT ]
    RA: 128.703619534125   Dec: 70.7817005714058  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 128.670458724184   Dec: 70.8037676703287  [deg; J2000]  
        { 08h 34m 40.9s , +70d 48' 13.6" }
         +/- 0.74492933687611 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.214111723079694 [arcmin] (formal 1-sigma fit error)
    SNR: 46.3245410832481
 
  Angular difference between Flight and Ground position is 1.476991 arcmin
 
  Partial Coding Fraction: 0.328125    [ including projection effects ]

  Duration
     T90: 47.8599999547005 +/- 4.85426867023946
        Measured from: -25.7799999117851
                   to: 22.0800000429153     [s; relative to TRIGTIME]
     T50: 12.6199999451637 +/- 0.98641167503302
        Measured from: -3.27599990367889
                   to: 9.34400004148483     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.17599999904633     
                   to: 7.17599999904633     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -35.2080000042915     
                   to: 39.2239999771118     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.627259   5.070861   3.897248   0.874447
           0.107754   0.115215   0.101063   0.078567 [error]
 Peak      0.143929   0.287128   0.324980   0.096614
           0.016098   0.018426   0.018811   0.013175 [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 1.45e-06 2.40e-06 3.02e-06 7.57e-06 8.99e-06 1.44e-05   erg/cm2
              Error 7.87e-08 7.66e-08 1.05e-07 5.84e-07 2.59e-07 6.45e-07   erg/cm2
Peak flux Power-law 1.84e+00 2.27e+00 2.03e+00 3.14e+00 7.23e+00 9.28e+00   ph/cm2/s
              Error 2.34e-01 1.81e-01 1.44e-01 4.55e-01 4.97e-01 6.27e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.33e-06 2.46e-06 3.12e-06 4.87e-06 8.81e-06 1.18e-05   erg/cm2
              Error 1.02e-07 8.41e-08 1.21e-07 1.20e-06 2.81e-07 1.23e-06   erg/cm2
Peak flux Cutoff-PL 1.49e+00 2.37e+00 2.25e+00 1.66e+00 7.05e+00 7.77e+00   ph/cm2/s
              Error 2.90e-01 2.04e-01 1.93e-01 5.90e-01 5.07e-01 7.75e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.54e+00 2.35e+00 2.23e+00 1.85e+00 7.09e+00 7.99e+00   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    1.669    0.051    -      -           1.30e-02 3.65e-04   56.850 57
CPL   1.303    0.216     104.6   42.7      1.92e-02 4.34e-03   47.860 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.160    0.106    -      -           6.19e-02 4.08e-03   62.980 57
CPL   0.358    0.488     118.9   52.3      1.41e-01 7.18e-02   53.440 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: 43.200000 sec.
T50 in the 50-300 keV band: 11.328000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   74.432  -35.208   39.224
T90    47.860  -25.780   22.080
T50    12.620   -3.276    9.344
Peak    1.000    6.176    7.176

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  128.6705 +70.8038 0.0041   45.4  -30.7      13.8120    46.3  TRIG_00770981       
------------------------------------------
 
Foreground time interval of the image:
-35.208  39.224 (delta_t =  74.432 [sec])
Background time interval of the image:
-239.248 -35.208 (delta_t = 204.040 [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  -35.208 sec. to   39.224 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66940     ( -0.0513694   0.0515142 )
Norm@50keV  : 1.30075E-02    ( -0.000365306   0.000365258 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.85 using 59 PHA bins.
# Reduced chi-squared =         0.9973 for     57 degrees of freedom 
# Null hypothesis probability =   4.807662e-01
 
Photon flux (15-150 keV)    in 74.43 sec: 1.70948 ( -0.0545707  0.054783 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.98735e-06 ( -2.58687e-07  2.58868e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -35.208 sec. to   39.224 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30335     ( -0.221395   0.211361 )
Epeak [keV] : 104.585      ( -20.2012 65.1927 )
Norm@50keV  : 1.91582E-02    ( -0.00375201   0.00491834 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.86 using 59 PHA bins.
# Reduced chi-squared =         0.8546 for     56 degrees of freedom 
# Null hypothesis probability =   7.722165e-01
 
Photon flux (15-150 keV)    in 74.43 sec: 1.66249 ( -0.05988  0.06024 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.8073e-06 ( -2.81494e-07  2.80229e-07 ) ergs/cm2
 
Band function
Time interval is from  -35.208 sec. to   39.224 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.30197   ( -0.211469   0.60567 )
beta        : -2.13794    ( 2.14976   0.405693 )
Epeak [keV] : 103.859      ( -50.0468 64.9313 )
Norm@50keV   : 1.92066E-02    ( -0.00391824   0.026514 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.85 using 59 PHA bins.
# Reduced chi-squared =         0.8700 for     55 degrees of freedom 
# Null hypothesis probability =   7.420037e-01
 
Photon flux (15-150 keV)    in 74.43 sec: 1.66150 ( 5.3385  -0.06102 ) 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]    : 15.6893  (  )
R^2/D10^2   : 0.154060  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         302.73 using 59 PHA bins.
# Reduced chi-squared =         5.3110 for     57 degrees of freedom 
# Null hypothesis probability =   3.482281e-35
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.861e-07   3.468e-08
25- 50  2.425e-06   9.267e-08
50-150  4.140e-06   2.114e-07
15-150  7.150e-06   2.270e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 162.605       (-20.5986      26.2105)
Norm        : 6.93514       (-0.246685     0.261512)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.95 using 59 PHA bins.
# Reduced chi-squared =         0.8412 for     57 degrees of freedom 
# Null hypothesis probability =   7.978656e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.305e-06   7.331e-08
25- 50  2.449e-06   1.470e-07
50-150  5.006e-06   1.167e-06
15-150  8.760e-06   1.256e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.18128        (-0.785204      0.842393)
R1^2/D10^2  : 1.61007        (-0.505916      0.833325)
kT2 [keV]   : 24.9925        (-2.19787      2.86414)
R2^2/D10^2  : 2.23303E-02    (-0.00769414   0.00985203)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.97 using 59 PHA bins.
# Reduced chi-squared =          1.018 for     55 degrees of freedom 
# Null hypothesis probability =   4.381100e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.199e-06   1.213e-07
25- 50  2.488e-06   1.526e-07
50-150  5.005e-06   3.614e-07
15-150  8.693e-06   5.210e-07

Peak spectrum fit

Power-law model
Time interval is from    6.176 sec. to    7.176 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16020     ( -0.106425   0.105384 )
Norm@50keV  : 6.18768E-02    ( -0.00408391   0.00408006 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.98 using 59 PHA bins.
# Reduced chi-squared =          1.105 for     57 degrees of freedom 
# Null hypothesis probability =   2.731060e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.22505 ( -0.496827  0.497689 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.35047e-07 ( -4.40326e-08  4.41044e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    6.176 sec. to    7.176 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.358198     ( -0.515866   0.459844 )
Epeak [keV] : 118.864      ( -25.5559 79.011 )
Norm@50keV  : 0.140595    ( -0.0516241   0.0919554 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.44 using 59 PHA bins.
# Reduced chi-squared =         0.9543 for     56 degrees of freedom 
# Null hypothesis probability =   5.722868e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.04608 ( -0.50666  0.50755 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.23032e-07 ( -4.5851e-08  4.5656e-08 ) ergs/cm2
 
Band function
Time interval is from    6.176 sec. to    7.176 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.358128   ( -0.418623   0.503024 )
beta        : -10.0000    ( 10   7.10543e-15 )
Epeak [keV] : 118.843      ( -16.6711 78.8291 )
Norm@50keV   : 0.140607    ( -0.0516111   0.0920341 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.44 using 59 PHA bins.
# Reduced chi-squared =         0.9717 for     55 degrees of freedom 
# Null hypothesis probability =   5.343462e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.08955 (    ) 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]    : 20.4184  (-1.53325  1.69964)
R^2/D10^2   : 0.329165  (-0.0769596   0.0976395)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.48 using 59 PHA bins.
# Reduced chi-squared =          1.359 for     57 degrees of freedom 
# Null hypothesis probability =   3.689236e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.623e-08   3.305e-09
25- 50  1.325e-07   1.235e-08
50-150  4.105e-07   3.980e-08
15-150  5.692e-07   4.440e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-10.6262      -200)
Norm        : 30.3612       (-2.04386     2.04386)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          97.36 using 59 PHA bins.
# Reduced chi-squared =          1.708 for     57 degrees of freedom 
# Null hypothesis probability =   6.940092e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.562e-08   6.230e-09
25- 50  1.455e-07   1.265e-08
50-150  3.190e-07   8.350e-08
15-150  5.401e-07   9.115e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.58206        (-2.87871      3.79151)
R1^2/D10^2  : 2.42821        (-1.47379      6.28746)
kT2 [keV]   : 28.2664        (-4.85662      11.6118)
R2^2/D10^2  : 9.30789E-02    (-0.0671179   0.0966745)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.44 using 59 PHA bins.
# Reduced chi-squared =         0.9716 for     55 degrees of freedom 
# Null hypothesis probability =   5.345975e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.596e-08   2.007e-08
25- 50  1.393e-07   4.912e-08
50-150  4.399e-07   1.380e-07
15-150  6.252e-07   1.969e-07
Plot creation:
Thu Sep  7 04:28:14 EDT 2017