batgrbproduct analysis for trigger=785850

batgrbproduct Analysis for Trigger=785850

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Nov  4 21:58:22 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger785850/GCN5_download_cron
======================================================================

  Trigger: 00785850      Segment: 000

  BAT Trigger Time: 531443452.012   [s; MET]
      Trigger Stop: 531443452.076   [s; MET]
               UTC: 2017-11-03T23:10:32.067600    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 249.535607366346   Dec: -10.2151202797463  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.35
     Image Trigger?:     NO
     Rate S/N Ratio:     77.2657750883274  [ if not an image trigger ]
     Image S/N Ratio:    9.35

  Flight Position:   [ source = BAT ]
    RA: 249.535607366346   Dec: -10.2151202797463  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 249.509840200756   Dec: -10.2063610430431  [deg; J2000]  
        { 16h 38m 02.4s , -10d 12' 22.9" }
         +/- 1.45615905322818 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.602935362243535 [arcmin] (formal 1-sigma fit error)
    SNR: 17.7812763020579
 
  Angular difference between Flight and Ground position is 1.609753 arcmin
 
  Partial Coding Fraction: 0.65625    [ including projection effects ]

  Duration
     T90: 3.90399998426437 +/- 1.10585354902182
        Measured from: -0.323999881744385
                   to: 3.58000010251999     [s; relative to TRIGTIME]
     T50: 0.319999992847443 +/- 0.961199290916573
        Measured from: -0.00399988889694214
                   to: 0.3160001039505     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.368000030517578     
                   to: 0.631999969482422     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.37200003862381     
                   to: 4.66799998283386     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.145704   0.210928   0.162426   0.086782
           0.019787   0.019512   0.017746   0.015386 [error]
 Peak      0.104118   0.157324   0.150189   0.065936
           0.010462   0.011296   0.011177   0.009730 [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 4.11e-08 8.46e-08 1.36e-07 4.89e-07 3.77e-07 7.51e-07   erg/cm2
              Error 7.70e-09 9.31e-09 1.73e-08 1.41e-07 4.27e-08 1.52e-07   erg/cm2
Peak flux Power-law 9.24e-01 1.13e+00 1.00e+00 1.53e+00 3.59e+00 4.59e+00   ph/cm2/s
              Error 1.35e-01 9.77e-02 9.00e-02 3.00e-01 2.72e-01 3.78e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.15e-08 8.49e-08 1.36e-07 4.79e-07 3.76e-07 7.40e-07   erg/cm2
              Error 7.79e-09 9.34e-09 1.72e-08 2.05e-07 4.23e-08 2.47e-07   erg/cm2
Peak flux Cutoff-PL 9.27e-01 1.13e+00 1.00e+00 1.51e+00 3.59e+00 4.57e+00   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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    1.314    0.184    -      -           7.60e-03 7.59e-04   51.890 57
CPL   1.316    0.189    9999.4    0.0      7.61e-03 4.04e-03   51.910 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.174    0.136    -      -           3.07e-02 2.29e-03   56.120 57
CPL   1.169    0.270    9999.2    0.0      3.08e-02 8.86e-03   56.140 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: 0.576000 sec.
T50 in the 50-300 keV band: 0.128000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    5.040   -0.372    4.668
T90     3.904   -0.324    3.580
T50     0.320   -0.004    0.316
Peak    1.000   -0.368    0.632

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  249.5098 -10.2064 0.0108   21.5  -96.4       0.6467    17.8  TRIG_00785850       
------------------------------------------
 
Foreground time interval of the image:
 -0.372   4.668 (delta_t =   5.040 [sec])
Background time interval of the image:
-239.012 -55.922 (delta_t = 183.090 [sec])
-55.012  -0.372 (delta_t =  54.640 [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   -0.372 sec. to    4.668 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31440     ( -0.18432   0.182814 )
Norm@50keV  : 7.59710E-03    ( -0.000760081   0.000757888 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.89 using 59 PHA bins.
# Reduced chi-squared =         0.9104 for     57 degrees of freedom 
# Null hypothesis probability =   6.666176e-01
 
Photon flux (15-150 keV)    in 5.04 sec: 0.908802 ( -0.0926393  0.0928586 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.77055e-07 ( -4.24468e-08  4.28843e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.372 sec. to    4.668 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31582     ( -0.197965   0.179498 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 7.61212E-03    ( -0.00270514   0.00536937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.91 using 59 PHA bins.
# Reduced chi-squared =         0.9269 for     56 degrees of freedom 
# Null hypothesis probability =   6.305304e-01
 
Photon flux (15-150 keV)    in 5.04 sec: 0.909153 ( -0.093326  0.092137 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.75946e-07 ( -4.12327e-08  4.32941e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.372 sec. to    4.668 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.77751   ( -4.77751   -4.77751 )
beta        : -1.37628    ( -0.210663   0.202336 )
Epeak [keV] : 24.7186      ( -24.7186 6.11133 )
Norm@50keV   : 501.369    ( -49.6406   2.62518e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.76 using 59 PHA bins.
# Reduced chi-squared =         0.9230 for     55 degrees of freedom 
# Null hypothesis probability =   6.370752e-01
 
Photon flux (15-150 keV)    in 5.04 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]    : 16.7656  (-2.34129  2.86096)
R^2/D10^2   : 7.05734E-02  (-0.0288848   0.0471141)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.70 using 59 PHA bins.
# Reduced chi-squared =          1.433 for     57 degrees of freedom 
# Null hypothesis probability =   1.764140e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.044e-08   4.287e-09
25- 50  8.942e-08   1.250e-08
50-150  1.787e-07   3.354e-08
15-150  2.885e-07   4.163e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-37.3205      -200)
Norm        : 3.74675       (-0.375667     0.375667)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.56 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     57 degrees of freedom 
# Null hypothesis probability =   4.544738e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.703e-08   2.575e-08
25- 50  9.047e-08   4.974e-08
50-150  1.984e-07   1.075e-07
15-150  3.359e-07   1.809e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.10150        (-2.49878      2.02941)
R1^2/D10^2  : 0.599407        (-0.385848      1.44162)
kT2 [keV]   : 41.8252        (-17.1385      -42.6108)
R2^2/D10^2  : 3.16327E-03    (-0.00250887   0.0119157)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.92 using 59 PHA bins.
# Reduced chi-squared =         0.9439 for     55 degrees of freedom 
# Null hypothesis probability =   5.931833e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.967e-08   1.620e-08
25- 50  8.880e-08   3.685e-08
50-150  2.605e-07   1.326e-07
15-150  3.890e-07   1.681e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.368 sec. to    0.632 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17359     ( -0.136847   0.135833 )
Norm@50keV  : 3.06691E-02    ( -0.00228897   0.00228781 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.12 using 59 PHA bins.
# Reduced chi-squared =         0.9846 for     57 degrees of freedom 
# Null hypothesis probability =   5.080055e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.58712 ( -0.271389  0.271664 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.13516e-07 ( -2.6987e-08  2.72083e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.368 sec. to    0.632 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16926     ( -0.353646   0.185774 )
Epeak [keV] : 9999.25      ( -9999.26 -9999.26 )
Norm@50keV  : 3.08206E-02    ( -0.00229724   0.0154314 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.14 using 59 PHA bins.
# Reduced chi-squared =          1.002 for     56 degrees of freedom 
# Null hypothesis probability =   4.697232e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.58736 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.13724e-07 ( -2.7093e-08  2.6699e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.368 sec. to    0.632 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.39498   ( -4.39498   -4.39498 )
beta        : -1.23423    ( -0.156879   0.151417 )
Epeak [keV] : 26.3202      ( -26.3202 5.57566 )
Norm@50keV   : 659.198    ( -49.023   7.15796e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.52 using 59 PHA bins.
# Reduced chi-squared =         0.9913 for     55 degrees of freedom 
# Null hypothesis probability =   4.928333e-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]    : 18.8957  (-2.06758  2.40766)
R^2/D10^2   : 0.195004  (-0.062143   0.0890893)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         104.27 using 59 PHA bins.
# Reduced chi-squared =         1.8293 for     57 degrees of freedom 
# Null hypothesis probability =   1.346842e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.371e-08   1.950e-09
25- 50  6.570e-08   7.235e-09
50-150  1.722e-07   2.650e-08
15-150  2.516e-07   2.670e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-17.4019      -200)
Norm        : 14.5819       (-1.11101     1.11101)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.51 using 59 PHA bins.
# Reduced chi-squared =          1.360 for     57 degrees of freedom 
# Null hypothesis probability =   3.673634e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.632e-08   3.825e-09
25- 50  6.986e-08   9.790e-09
50-150  1.532e-07   5.473e-08
15-150  2.594e-07   6.910e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.26419        (-1.48879      2.01086)
R1^2/D10^2  : 2.92874        (-1.5884      3.57748)
kT2 [keV]   : 35.3330        (-7.8752      17.786)
R2^2/D10^2  : 2.33563E-02    (-0.0157707   0.0277502)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.06 using 59 PHA bins.
# Reduced chi-squared =         0.9829 for     55 degrees of freedom 
# Null hypothesis probability =   5.106013e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.986e-08   9.615e-09
25- 50  6.477e-08   1.600e-08
50-150  2.258e-07   8.855e-08
15-150  3.204e-07   9.985e-08
Plot creation:
Sat Nov  4 22:31:49 EDT 2017