batgrbproduct analysis for trigger=737125

batgrbproduct Analysis for Trigger=737125

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Feb  6 18:53:30 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger737125/GCN5_download_cron
======================================================================

  Trigger: 00737125      Segment: 000

  BAT Trigger Time: 508111064.064   [s; MET]
      Trigger Stop: 508111068.16   [s; MET]
               UTC: 2017-02-06T21:57:25.488720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 271.785667508088   Dec: 11.2228219729964  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.48
     Image Trigger?:     NO
     Rate S/N Ratio:     9.32737905308882  [ if not an image trigger ]
     Image S/N Ratio:    7.48

  Flight Position:   [ source = BAT ]
    RA: 271.785667508088   Dec: 11.2228219729964  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 271.784144142727   Dec: 11.1745373343021  [deg; J2000]  
        { 18h 07m 08.2s , +11d 10' 28.3" }
         +/- 2.21496023328287 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.971105170051631 [arcmin] (formal 1-sigma fit error)
    SNR: 9.76648922076366
 
  Angular difference between Flight and Ground position is 2.898465 arcmin
 
  Partial Coding Fraction: 0.7890625    [ including projection effects ]

  Duration
     T90: 13.3600000143051 +/- 2.67104170068532
        Measured from: -0.00799989700317383
                   to: 13.3520001173019     [s; relative to TRIGTIME]
     T50: 7.53600001335144 +/- 3.01642438201616
        Measured from: 1.83200013637543
                   to: 9.36800014972687     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.324000000953674     
                   to: 0.675999999046326     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.328000009059906     
                   to: 15.527999997139     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.144825   0.199895   0.122182   0.021915
           0.029907   0.027842   0.023421   0.019622 [error]
 Peak      0.018759   0.016389   0.015425   0.010045
           0.007506   0.006977   0.006151   0.005073 [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 3.92e-08 7.54e-08 1.12e-07 3.61e-07 3.17e-07 5.88e-07   erg/cm2
              Error 1.08e-08 1.29e-08 2.25e-08 1.57e-07 5.56e-08 1.73e-07   erg/cm2
Peak flux Power-law 9.95e-02 1.33e-01 1.32e-01 2.34e-01 4.40e-01 5.97e-01   ph/cm2/s
              Error 8.48e-02 6.65e-02 4.99e-02 2.45e-01 1.63e-01 2.36e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.12e-08 8.61e-08 1.16e-07 6.54e-08 2.78e-07 2.99e-07   erg/cm2
              Error 1.37e-08 1.77e-08 2.75e-08 1.16e-07 6.57e-08 1.87e-07   erg/cm2
Peak flux Cutoff-PL 1.08e-01 1.38e-01 1.29e-01 2.14e-01 4.46e-01 5.85e-01   ph/cm2/s
              Error -------- 6.74e-02 5.03e-02 2.83e-01 1.64e-01 2.56e-01   ph/cm2/s
 
Fluence        Band 2.93e-08 8.78e-08 1.12e-07 1.56e-07 2.87e-07 3.92e-07   erg/cm2
              Error 1.40e-08 1.80e-08 2.68e-08 -------- -------- --------   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    1.424    0.272    -      -           2.08e-03 3.33e-04   79.630 57
CPL   0.003    1.820      67.3  474.1      1.12e-02 7.11e-02   76.840 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.020    0.811    -      -           3.82e-03 1.42e-03   68.970 57
CPL   1.049    0.818    9999.4    0.0      3.82e-03 0.00e+00   68.980 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: 8.768000 sec.
T50 in the 50-300 keV band: 4.928000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   15.856   -0.328   15.528
T90    13.360   -0.008   13.352
T50     7.536    1.832    9.368
Peak    1.000   -0.324    0.676

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  271.7841 +11.1745 0.0198   20.0 -120.9       0.4980     9.8  TRIG_00737125       
------------------------------------------
 
Foreground time interval of the image:
 -0.328  15.528 (delta_t =  15.856 [sec])
Background time interval of the image:
-239.064  -0.328 (delta_t = 238.736 [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   -0.328 sec. to   15.528 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.42431     ( -0.272987   0.270907 )
Norm@50keV  : 2.07578E-03    ( -0.000333414   0.000332464 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.63 using 59 PHA bins.
# Reduced chi-squared =          1.397 for     57 degrees of freedom 
# Null hypothesis probability =   2.553180e-02
 
Photon flux (15-150 keV)    in 15.86 sec: 0.254219 ( -0.0415262  0.0417001 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.1658e-07 ( -5.51289e-08  5.60112e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.328 sec. to   15.528 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.49669E-03     ( -2.20875   1.43097 )
Epeak [keV] : 67.2914      ( -16.8132 931.326 )
Norm@50keV  : 1.11868E-02    ( -0.0111956   0.130912 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.84 using 59 PHA bins.
# Reduced chi-squared =          1.372 for     56 degrees of freedom 
# Null hypothesis probability =   3.375855e-02
 
Photon flux (15-150 keV)    in 15.86 sec: 0.237372 ( -0.046018  0.045439 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.78354e-07 ( -6.27073e-08  6.86246e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.328 sec. to   15.528 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.696643   ( -1.86824   2.97355 )
beta        : -2.29610    ( 2.2983   0.881783 )
Epeak [keV] : 57.3132      ( -32.8625 54.7647 )
Norm@50keV   : 2.74975E-02    ( -0.0240155   24.6925 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.94 using 59 PHA bins.
# Reduced chi-squared =          1.381 for     55 degrees of freedom 
# Null hypothesis probability =   3.220020e-02
 
Photon flux (15-150 keV)    in 15.86 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.86936e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.6758  (-2.26674  2.88248)
R^2/D10^2   : 3.24082E-02  (-0.0153642   0.02669)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          78.26 using 59 PHA bins.
# Reduced chi-squared =          1.373 for     57 degrees of freedom 
# Null hypothesis probability =   3.236149e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.326e-08   7.825e-09
25- 50  9.054e-08   2.412e-08
50-150  1.314e-07   4.331e-08
15-150  2.452e-07   7.120e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.355       (-87.7948      -199.362)
Norm        : 1.05408       (-0.16663     0.166914)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.01 using 59 PHA bins.
# Reduced chi-squared =          1.386 for     57 degrees of freedom 
# Null hypothesis probability =   2.844042e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.163e-08   2.362e-08
25- 50  8.008e-08   4.511e-08
50-150  1.756e-07   9.984e-08
15-150  2.973e-07   1.686e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 12.6584        (-2.34678      2.88706)
R1^2/D10^2  : 4.87173E-02        (-0.0244334      0.0365676)
kT2 [keV]   : 199.136        (-199.247      -199.247)
R2^2/D10^2  : 2.04969E-05    (-1.04539e-05   0.01493)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.09 using 59 PHA bins.
#Fit statistic : Chi-Squared =          74.67 using 59 PHA bins.
# Reduced chi-squared =          1.402 for     55 degrees of freedom 
# Reduced chi-squared =          1.358 for     55 degrees of freedom 
# Null hypothesis probability =   2.630948e-02
# Null hypothesis probability =   3.993034e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.154e-08   1.741e-08
25- 50  8.540e-08   4.700e-08
50-150  1.446e-07   8.786e-08
15-150  2.615e-07   1.413e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.324 sec. to    0.676 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.01953     ( -0.884256   0.737052 )
Norm@50keV  : 3.81947E-03    ( -0.00149091   0.00134697 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.97 using 59 PHA bins.
# Reduced chi-squared =          1.210 for     57 degrees of freedom 
# Null hypothesis probability =   1.329477e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.440035 ( -0.161268  0.165188 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.10028e-08 ( -1.51896e-08  1.54638e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.324 sec. to    0.676 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04938     ( -0.925754   0.709449 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 3.82350E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.98 using 59 PHA bins.
# Reduced chi-squared =          1.232 for     56 degrees of freedom 
# Null hypothesis probability =   1.140864e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.445865 ( -0.167925  0.159815 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.08911e-08 ( -1.50382e-08  1.50526e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.324 sec. to    0.676 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.896559   ( 0.896454   0.896454 )
beta        : -1.01978    ( 1.01922   0.883954 )
Epeak [keV] : 26.5138      ( -26.2123 -26.2123 )
Norm@50keV   : 6.12054E-03    ( -0.00360977   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.97 using 59 PHA bins.
# Reduced chi-squared =          1.254 for     55 degrees of freedom 
# Null hypothesis probability =   9.750548e-02
 
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]    : 22.4754  (-9.85239  62.3287)
R^2/D10^2   : 1.36782E-02  (-0.0132982   0.0741112)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.20 using 59 PHA bins.
# Reduced chi-squared =          1.267 for     57 degrees of freedom 
# Null hypothesis probability =   8.455952e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.266e-09   8.475e-10
25- 50  6.779e-09   4.223e-09
50-150  2.559e-08   1.684e-08
15-150  3.364e-08   2.051e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.361       (-119.994      -199.363)
Norm        : 1.85547       (-0.663549     0.663515)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.92 using 59 PHA bins.
# Reduced chi-squared =          1.244 for     57 degrees of freedom 
# Null hypothesis probability =   1.016961e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.620e-09   2.969e-09
25- 50  8.888e-09   5.515e-09
50-150  1.949e-08   1.210e-08
15-150  3.300e-08   2.064e-08
Double BB
R1^2/D10^2  : 8.93694E-02        (-0.0808545      -0.0893895)
kT2 [keV]   : 199.363        (-200      -200)
R2^2/D10^2  : 1.00603E-04    (-5.86184e-05   0.000827832)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.14 using 59 PHA bins.
#Fit statistic : Chi-Squared =          68.39 using 59 PHA bins.
#Fit statistic : Chi-Squared =          68.20 using 59 PHA bins.
# Reduced chi-squared =          1.257 for     55 degrees of freedom 
# Reduced chi-squared =          1.243 for     55 degrees of freedom 
# Reduced chi-squared =          1.240 for     55 degrees of freedom 
# Null hypothesis probability =   9.507111e-02
# Null hypothesis probability =   1.060004e-01
# Null hypothesis probability =   1.088352e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.430e-09   2.130e-09
25- 50  5.161e-09   3.192e-09
50-150  3.028e-08   1.833e-08
15-150  3.987e-08   2.279e-08
Plot creation:
Mon Feb  6 19:16:11 EST 2017