batgrbproduct analysis for trigger=741965

batgrbproduct Analysis for Trigger=741965

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Mar 12 13:41:44 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger741965/GCN5_download_cron
======================================================================

  Trigger: 00741965      Segment: 000

  BAT Trigger Time: 510912541.696   [s; MET]
      Trigger Stop: 510912545.792   [s; MET]
               UTC: 2017-03-11T08:08:42.959380    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 280.563140731264   Dec: -30.0629025629876  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.33
     Image Trigger?:     NO
     Rate S/N Ratio:     10.6770782520313  [ if not an image trigger ]
     Image S/N Ratio:    7.33

  Flight Position:   [ source = BAT ]
    RA: 280.563140731264   Dec: -30.0629025629876  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 280.53922028331   Dec: -30.040839773871  [deg; J2000]  
        { 18h 42m 09.4s , -30d 02' 27.0" }
         +/- 2.02393159360432 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.845059127662672 [arcmin] (formal 1-sigma fit error)
    SNR: 11.1095320447219
 
  Angular difference between Flight and Ground position is 1.815393 arcmin
 
  Partial Coding Fraction: 0.6484375    [ including projection effects ]

  Duration
     T90: 6.31599992513657 +/- 0.96083295141137
        Measured from: -0.563999831676483
                   to: 5.75200009346008     [s; relative to TRIGTIME]
     T50: 3.783999979496 +/- 1.83555989372279
        Measured from: 0.38400012254715
                   to: 4.16800010204315     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.73199999332428     
                   to: 2.73199999332428     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.919999957084656     
                   to: 6.08000004291534     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.101885   0.146219   0.085792   0.045244
           0.021488   0.021830   0.019036   0.015451 [error]
 Peak      0.021529   0.035539   0.031119   0.021524
           0.008462   0.008315   0.007873   0.005888 [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 2.92e-08 5.81e-08 8.98e-08 3.04e-07 2.51e-07 4.82e-07   erg/cm2
              Error 9.33e-09 1.07e-08 1.95e-08 1.55e-07 4.73e-08 1.67e-07   erg/cm2
Peak flux Power-law 2.17e-01 2.64e-01 2.34e-01 3.55e-01 8.39e-01 1.07e+00   ph/cm2/s
              Error 1.04e-01 7.58e-02 6.22e-02 2.13e-01 2.03e-01 2.63e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.96e-08 5.83e-08 8.93e-08 2.96e-07 2.50e-07 4.73e-07   erg/cm2
              Error 9.33e-09 1.01e-08 1.94e-08 1.38e-07 4.56e-08 1.79e-07   erg/cm2
Peak flux Cutoff-PL 2.22e-01 2.67e-01 2.32e-01 3.44e-01 8.41e-01 1.07e+00   ph/cm2/s
              Error 8.41e-02 7.62e-02 6.45e-02 3.03e-01 2.04e-01 2.89e-01   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    1.372    0.325    -      -           3.69e-03 6.14e-04   57.590 57
CPL   2.508    0.635     166.9    0.0      9.12e-04 0.00e+00   55.060 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.179    0.440    -      -           7.17e-03 1.66e-03   46.430 57
CPL   1.178    0.443    9999.2    0.0      7.20e-03 1.79e-03   46.440 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: 1.600000 sec.
T50 in the 50-300 keV band: 0.768000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    7.000   -0.920    6.080
T90     6.316   -0.564    5.752
T50     3.784    0.384    4.168
Peak    1.000    1.732    2.732

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  280.5392 -30.0408 0.0173   26.9   42.4       0.4439    11.1  TRIG_00741965       
------------------------------------------
 
Foreground time interval of the image:
 -0.920   6.080 (delta_t =   7.000 [sec])
Background time interval of the image:
-239.696 -235.766 (delta_t =   3.930 [sec])
-234.696 -74.256 (delta_t = 160.440 [sec])
-67.696  -0.920 (delta_t =  66.776 [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   -0.920 sec. to    6.080 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37200     ( -0.328823   0.32164 )
Norm@50keV  : 3.68804E-03    ( -0.000615833   0.000612518 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.59 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     57 degrees of freedom 
# Null hypothesis probability =   4.531864e-01
 
Photon flux (15-150 keV)    in 7 sec: 0.446357 ( -0.0760708  0.0763042 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.50931e-07 ( -4.70374e-08  4.76608e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.920 sec. to    6.080 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.50839     ( -1.13011   0.139847 )
Epeak [keV] : 166.893      (   )
Norm@50keV  : 9.12231E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.06 using 59 PHA bins.
# Reduced chi-squared =         0.9832 for     56 degrees of freedom 
# Null hypothesis probability =   5.105535e-01
 
Photon flux (15-150 keV)    in 7 sec: 0.448745 0.446227 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.49948e-07 ( -4.57471e-08  4.53831e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.920 sec. to    6.080 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.73041   ( 1.03705   1.03705 )
beta        : -1.38940    ( 1.37446   0.330586 )
Epeak [keV] : 20.5831      ( -53.6053 -53.6053 )
Norm@50keV   : 103.674    ( -103.643   344892 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.47 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     55 degrees of freedom 
# Null hypothesis probability =   3.839878e-01
 
Photon flux (15-150 keV)    in 7 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]    : 14.1336  (-3.82957  8.8939)
R^2/D10^2   : 5.86699E-02  (-0.0574224   0.120825)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.54 using 59 PHA bins.
# Reduced chi-squared =          1.360 for     57 degrees of freedom 
# Null hypothesis probability =   3.653129e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.731e-08   6.643e-09
25- 50  6.500e-08   1.977e-08
50-150  8.591e-08   3.578e-08
15-150  1.682e-07   5.533e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-77.6879      -200)
Norm        : 1.83214       (-0.30577     0.30577)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.15 using 59 PHA bins.
# Reduced chi-squared =          1.055 for     57 degrees of freedom 
# Null hypothesis probability =   3.623342e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.194e-08   1.853e-08
25- 50  6.144e-08   3.424e-08
50-150  1.347e-07   7.690e-08
15-150  2.281e-07   1.282e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.76639        (-2.25241      2.62998)
R1^2/D10^2  : 0.400938        (-0.228715      0.500514)
kT2 [keV]   : 73.4558        (-62.0226      -98.9114)
R2^2/D10^2  : 4.19813E-04    (-0.000191033   0.00203618)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.95 using 59 PHA bins.
# Reduced chi-squared =         0.9627 for     55 degrees of freedom 
# Null hypothesis probability =   5.534299e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.118e-08   1.894e-08
25- 50  5.951e-08   3.225e-08
50-150  1.747e-07   9.684e-08
15-150  2.654e-07   1.441e-07

Peak spectrum fit

Power-law model
Time interval is from    1.732 sec. to    2.732 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17895     ( -0.449873   0.430092 )
Norm@50keV  : 7.16674E-03    ( -0.0016657   0.00166398 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.43 using 59 PHA bins.
# Reduced chi-squared =         0.8146 for     57 degrees of freedom 
# Null hypothesis probability =   8.401669e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.838819 ( -0.202956  0.203916 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.31484e-08 ( -1.85807e-08  1.87842e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.732 sec. to    2.732 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17802     ( -0.45656   0.429997 )
Epeak [keV] : 9999.19      ( -9999.36 -9999.36 )
Norm@50keV  : 7.20221E-03    ( -0.00166911   0.00190181 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.44 using 59 PHA bins.
# Reduced chi-squared =         0.8292 for     56 degrees of freedom 
# Null hypothesis probability =   8.151081e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.841400 ( -0.205947  0.20128 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.32287e-08 ( -1.86057e-08  1.85265e-08 ) ergs/cm2
 
Band function
Time interval is from    1.732 sec. to    2.732 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.911609   ( 0.908356   0.908356 )
beta        : -1.17936    ( 1.17926   0.450184 )
Epeak [keV] : 66.3516      ( -68.2077 -68.2077 )
Norm@50keV   : 1.26421E-02    ( -0.00711784   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.43 using 59 PHA bins.
# Reduced chi-squared =         0.8442 for     55 degrees of freedom 
# Null hypothesis probability =   7.879458e-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]    : 19.9185  (-6.26243  10.998)
R^2/D10^2   : 3.80939E-02  (-0.0281886   0.093606)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.55 using 59 PHA bins.
# Reduced chi-squared =         0.9219 for     57 degrees of freedom 
# Null hypothesis probability =   6.426935e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.918e-09   1.749e-09
25- 50  1.450e-08   7.008e-09
50-150  4.261e-08   2.137e-08
15-150  6.003e-08   2.774e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-86.8021      -200)
Norm        : 3.48312       (-0.828923     0.828923)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.98 using 59 PHA bins.
# Reduced chi-squared =         0.8594 for     57 degrees of freedom 
# Null hypothesis probability =   7.660217e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.673e-09   5.220e-09
25- 50  1.669e-08   9.745e-09
50-150  3.659e-08   2.170e-08
15-150  6.195e-08   3.609e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.91661        (-7.41463      7.66383)
R1^2/D10^2  : 0.275662        (-0.221544      0.454936)
kT2 [keV]   : 64.2007        (-66.2297      -68.8162)
R2^2/D10^2  : 1.06640E-03    (-0.000655964   0.0350752)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.72 using 59 PHA bins.
# Reduced chi-squared =         0.8495 for     55 degrees of freedom 
# Null hypothesis probability =   7.788657e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.897e-09   3.698e-09
25- 50  1.651e-08   9.520e-09
50-150  5.199e-08   2.726e-08
15-150  7.439e-08   3.682e-08
Plot creation:
Sun Mar 12 13:52:11 EDT 2017