batgrbproduct analysis for trigger=762535

batgrbproduct Analysis for Trigger=762535

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jul 14 19:09:48 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger762535/batgroup_hand_proc
======================================================================

  Trigger: 00762535      Segment: 000

  BAT Trigger Time: 521727952   [s; MET]
      Trigger Stop: 521728272   [s; MET]
               UTC: 2017-07-14T12:25:32.632340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 34.3206186211749   Dec: 1.98718338129198  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    8.63
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.63

  Flight Position:   [ source = BAT ]
    RA: 34.3206186211749   Dec: 1.98718338129198  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 34.3219055418608   Dec: 1.96203092948455  [deg; J2000]  
        { 02h 17m 17.3s , +01d 57' 43.3" }
         +/- 2.23693218337058 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.768999709833208 [arcmin] (formal 1-sigma fit error)
    SNR: 9.62973540974212
 
  Angular difference between Flight and Ground position is 1.511119 arcmin
 
  Partial Coding Fraction: 0.6171875    [ including projection effects ]

  Duration
     T90: 419.679999947548 +/- 92.5864471189302
        Measured from: 0.276000022888184
                   to: 419.955999970436     [s; relative to TRIGTIME]
     T50: 212.239999949932 +/- 67.4963938644466
        Measured from: 89.5799999833107
                   to: 301.819999933243     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 262.879999995232     
                   to: 263.879999995232     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -72.944000005722     
                   to: 464.371999979019     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.512128   1.926240   1.110960   0.347201
           0.148433   0.148866   0.132582   0.120028 [error]
 Peak      0.012484   0.015938   0.020072   0.008595
           0.006714   0.006832   0.006257   0.005610 [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 4.84e-07 7.60e-07 9.00e-07 2.07e-06 2.75e-06 4.21e-06   erg/cm2
              Error 6.95e-08 6.97e-08 1.31e-07 6.20e-07 3.02e-07 7.42e-07   erg/cm2
Peak flux Power-law 1.32e-01 1.34e-01 9.49e-02 1.07e-01 4.03e-01 4.68e-01   ph/cm2/s
              Error 8.03e-02 5.48e-02 4.81e-02 1.25e-01 1.60e-01 1.91e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.65e-07 7.87e-07 9.05e-07 1.24e-06 2.67e-06 3.40e-06   erg/cm2
              Error 8.02e-08 8.89e-08 1.37e-07 1.40e-06 3.42e-07 9.88e-07   erg/cm2
Peak flux Cutoff-PL 6.14e-02 1.64e-01 1.15e-01 1.12e-02 3.50e-01 3.52e-01   ph/cm2/s
              Error 9.03e-02 8.79e-02 6.80e-02 7.60e-02 1.75e-01 1.87e-01   ph/cm2/s
 
Fluence        Band 4.63e-07 7.80e-07 9.05e-07 1.36e-06 2.68e-06 3.52e-06   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    1.757    0.173    -      -           5.54e-04 5.82e-05   62.840 57
CPL   1.454    0.541      82.9    0.0      8.07e-04 0.00e+00   62.210 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared 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    1.492    0.668    -      -           3.23e-03 1.34e-03   69.180 57
CPL  -1.734    0.882      57.8  -20.2      1.24e-01 4.85e+02   66.980 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  537.316  -72.944  464.372
T90   419.680    0.276  419.956
T50   212.240   89.580  301.820
Peak    1.000  262.880  263.880

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   34.3219     1.9620   0.0200    24.0877   112.4002         3.3814053      9.630 TRIG_00762535                 
 
Foreground time interval of the image:
-11.899 336.701 (delta_t = 348.600 [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  -72.944 sec. to  464.372 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75718     ( -0.170109   0.176041 )
Norm@50keV  : 5.53930E-04    ( -5.87718e-05   5.77145e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.84 using 59 PHA bins.
# Reduced chi-squared =          1.102 for     57 degrees of freedom 
# Null hypothesis probability =   2.771872e-01
 
Photon flux (15-150 keV)    in 537.3 sec: 7.50999E-02 ( -0.0069282  0.00693251 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.74522e-06 ( -2.99153e-07  3.04076e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -72.944 sec. to  464.372 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.45356     ( -0.739746   0.342 )
Epeak [keV] : 82.8506      (   )
Norm@50keV  : 8.07175E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.21 using 59 PHA bins.
# Reduced chi-squared =          1.111 for     56 degrees of freedom 
# Null hypothesis probability =   2.646953e-01
 
Photon flux (15-150 keV)    in 537.3 sec: 7.39945E-02 ( -0.0073127  0.0072979 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.66715e-06 ( -3.40073e-07  3.44356e-07 ) ergs/cm2
 
Band function
Time interval is from  -72.944 sec. to  464.372 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45428   ( -0.369085   0.448022 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 82.9243      ( -33.2981 -82.9243 )
Norm@50keV   : 8.06333E-04    ( -0.000303239   0.00118322 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.21 using 59 PHA bins.
# Reduced chi-squared =          1.131 for     55 degrees of freedom 
# Null hypothesis probability =   2.349895e-01
 
Photon flux (15-150 keV)    in 537.3 sec: 7.43049E-02 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.68219e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.1894  (-1.39721  1.58661)
R^2/D10^2   : 1.68576E-02  (-0.0060521   0.00944177)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.94 using 59 PHA bins.
# Reduced chi-squared =          1.560 for     57 degrees of freedom 
# Null hypothesis probability =   4.326991e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.850e-07   4.734e-08
25- 50  9.134e-07   1.085e-07
50-150  8.245e-07   1.870e-07
15-150  2.023e-06   2.359e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 117.903       (-38.3128      67.1653)
Norm        : 0.316106       (-0.0358942     0.0475696)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.47 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     57 degrees of freedom 
# Null hypothesis probability =   2.881760e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.427e-07   5.548e-08
25- 50  7.895e-07   1.034e-07
50-150  1.397e-06   5.763e-07
15-150  2.629e-06   6.773e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.40492        (-1.85132      2.19592)
R1^2/D10^2  : 0.211215        (-0.146165      0.461886)
kT2 [keV]   : 19.6872        (-4.4021      8.92774)
R2^2/D10^2  : 2.33449E-03    (-0.00177793   0.00408241)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.19 using 59 PHA bins.
# Reduced chi-squared =          1.149 for     55 degrees of freedom 
# Null hypothesis probability =   2.095432e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.674e-07   2.203e-07
25- 50  7.587e-07   2.998e-07
50-150  1.350e-06   7.312e-07
15-150  2.576e-06   1.087e-06

Peak spectrum fit

Power-law model
Time interval is from  262.880 sec. to  263.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49195     ( -0.642484   0.694375 )
Norm@50keV  : 3.23307E-03    ( -0.00136167   0.00132675 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.18 using 59 PHA bins.
# Reduced chi-squared =          1.214 for     57 degrees of freedom 
# Null hypothesis probability =   1.292315e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.402755 ( -0.15981  0.160301 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.07087e-08 ( -1.35042e-08  1.42359e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  262.880 sec. to  263.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.73436     ( 1.80021   3.56501 )
Epeak [keV] : 57.8360      ( -17.2264 -57.6551 )
Norm@50keV  : 0.124309    ( -0.165341   969.598 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.98 using 59 PHA bins.
# Reduced chi-squared =          1.196 for     56 degrees of freedom 
# Null hypothesis probability =   1.495098e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.350415 ( -0.175614  0.174324 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.58852e-08 ( -1.13195e-08  1.44587e-08 ) ergs/cm2
 
Band function
Time interval is from  262.880 sec. to  263.880 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.66493   ( -2.82944   -1.14354 )
beta        : -9.99998    ( 9.99998   3.27664e-05 )
Epeak [keV] : 57.9500      ( -17.0677 457.703 )
Norm@50keV   : 0.116203    ( -0.116203   3.76011 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.98 using 59 PHA bins.
# Reduced chi-squared =          1.218 for     55 degrees of freedom 
# Null hypothesis probability =   1.289504e-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]    : 14.9289  (-4.38821  6.68651)
R^2/D10^2   : 5.18400E-02  (-0.0518323   0.119801)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.91 using 59 PHA bins.
# Reduced chi-squared =          1.174 for     57 degrees of freedom 
# Null hypothesis probability =   1.734135e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.421e-09   1.602e-09
25- 50  9.576e-09   5.980e-09
50-150  1.450e-08   1.038e-08
15-150  2.649e-08   1.736e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 195.729       (-189.768      -189.768)
Norm        : 1.67285       (-0.654591     0.905288)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.74 using 59 PHA bins.
# Reduced chi-squared =          1.206 for     57 degrees of freedom 
# Null hypothesis probability =   1.371247e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.175e-09   2.586e-09
25- 50  8.015e-09   5.185e-09
50-150  1.747e-08   1.128e-08
15-150  2.966e-08   1.922e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.91149        (-2.87999      54.622)
R1^2/D10^2  : 5.91700        (-6.68502      -6.68502)
kT2 [keV]   : 15.5027        (-4.76337      -15.4561)
R2^2/D10^2  : 4.40343E-02    (-0.0444052   0.119403)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.71 using 59 PHA bins.
# Reduced chi-squared =          1.213 for     55 degrees of freedom 
# Null hypothesis probability =   1.338440e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.119e-09   1.606e-09
25- 50  9.137e-09   5.745e-09
50-150  1.496e-08   1.016e-08
15-150  2.721e-08   1.843e-08
Plot creation:
Fri Jul 14 19:20:08 EDT 2017