batgrbproduct analysis for trigger=744791

batgrbproduct Analysis for Trigger=744791

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Apr  1 04:42:40 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger744791/GCN5_download_cron
======================================================================

  Trigger: 00744791      Segment: 000

  BAT Trigger Time: 512617265.28   [s; MET]
      Trigger Stop: 512617273.472   [s; MET]
               UTC: 2017-03-31T01:40:46.444640    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 323.782196657932   Dec: -24.413770984427  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.93
     Image Trigger?:     NO
     Rate S/N Ratio:     9.4339811320566  [ if not an image trigger ]
     Image S/N Ratio:    7.93

  Flight Position:   [ source = BAT ]
    RA: 323.782196657932   Dec: -24.413770984427  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 323.778359863261   Dec: -24.4062199363142  [deg; J2000]  
        { 21h 35m 06.8s , -24d 24' 22.4" }
         +/- 2.0128335109169 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.860569373601906 [arcmin] (formal 1-sigma fit error)
    SNR: 11.1971413237704
 
  Angular difference between Flight and Ground position is 0.499210 arcmin
 
  Partial Coding Fraction: 0.1855469    [ including projection effects ]

  Duration
     T90: 17.5680000185966 +/- 2.57327802102363
        Measured from: -1.72799986600876
                   to: 15.8400001525879     [s; relative to TRIGTIME]
     T50: 9.60000002384186 +/- 2.36249361399115
        Measured from: 1.44000017642975
                   to: 11.0400002002716     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.420000016689301     
                   to: 1.4200000166893     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.783999979496     
                   to: 17.1680000424385     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.522292   0.809861   0.376945   0.061794
           0.075201   0.077398   0.064764   0.053963 [error]
 Peak      0.038770   0.063904   0.044743   0.023827
           0.016539   0.017409   0.014886   0.013112 [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 2.09e-07 3.08e-07 3.39e-07 7.00e-07 1.07e-06 1.56e-06   erg/cm2
              Error 3.73e-08 3.77e-08 6.19e-08 2.53e-07 1.48e-07 3.18e-07   erg/cm2
Peak flux Power-law 4.78e-01 4.20e-01 2.54e-01 2.31e-01 1.25e+00 1.38e+00   ph/cm2/s
              Error 2.37e-01 1.43e-01 1.01e-01 1.76e-01 4.20e-01 4.47e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.77e-07 3.65e-07 3.36e-07 1.14e-07 9.66e-07 9.92e-07   erg/cm2
              Error 4.41e-08 5.50e-08 7.71e-08 1.80e-07 1.55e-07 2.23e-07   erg/cm2
Peak flux Cutoff-PL 2.95e-01 5.58e-01 2.83e-01 2.15e-02 1.16e+00 1.16e+00   ph/cm2/s
              Error 2.78e-01 2.00e-01 1.40e-01 9.37e-02 4.35e-01 4.38e-01   ph/cm2/s
 
Fluence        Band 1.75e-07 3.64e-07 3.32e-07 1.75e-07 9.71e-07 1.05e-06   erg/cm2
              Error -------- -------- -------- 2.60e-07 -------- --------   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    1.864    0.207    -      -           5.84e-03 8.05e-04   68.070 57
CPL   0.371    1.193      48.2   12.7      3.90e-02 1.09e-01   61.510 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.729    0.506    -      -           9.32e-03 3.12e-03   69.010 57
CPL  -1.415    4.521      49.9   33.4      4.30e-01 1.05e+02   65.700 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   19.952   -2.784   17.168
T90    17.568   -1.728   15.840
T50     9.600    1.440   11.040
Peak    1.000    0.420    1.420

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  323.7784 -24.4062 0.0173   39.6  -62.8       1.7681    11.2  TRIG_00744791       
------------------------------------------
 
Foreground time interval of the image:
 -2.784  17.168 (delta_t =  19.952 [sec])
Background time interval of the image:
-239.280 -111.920 (delta_t = 127.360 [sec])
-111.280  -2.784 (delta_t = 108.496 [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   -2.784 sec. to   17.168 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.86371     ( -0.202158   0.211136 )
Norm@50keV  : 5.83715E-03    ( -0.00081178   0.000798604 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.07 using 59 PHA bins.
# Reduced chi-squared =          1.194 for     57 degrees of freedom 
# Null hypothesis probability =   1.496577e-01
 
Photon flux (15-150 keV)    in 19.95 sec: 0.825079 ( -0.102127  0.102248 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.07062e-06 ( -1.47177e-07  1.4922e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.784 sec. to   17.168 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.370612     ( -1.34789   1.03729 )
Epeak [keV] : 48.2076      ( -8.44828 17.0403 )
Norm@50keV  : 3.90325E-02    ( -0.0390334   0.178978 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.51 using 59 PHA bins.
# Reduced chi-squared =          1.098 for     56 degrees of freedom 
# Null hypothesis probability =   2.853752e-01
 
Photon flux (15-150 keV)    in 19.95 sec: 0.786319 ( -0.105533  0.105664 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.66204e-07 ( -1.50251e-07  1.60693e-07 ) ergs/cm2
 
Band function
Time interval is from   -2.784 sec. to   17.168 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.370633   ( -0.690663   1.59499 )
beta        : -10.00000    ( 10   1.00559e-08 )
Epeak [keV] : 48.1983      ( -8.37012 17.0376 )
Norm@50keV   : 3.90347E-02    ( -0.00468359   0.17938 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.51 using 59 PHA bins.
# Reduced chi-squared =          1.118 for     55 degrees of freedom 
# Null hypothesis probability =   2.544009e-01
 
Photon flux (15-150 keV)    in 19.95 sec: 0.786796 ( 6.2132  -0.052641 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.70619e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.5121  (-1.37074  1.56599)
R^2/D10^2   : 0.240991  (-0.0930186   0.148133)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.48 using 59 PHA bins.
# Reduced chi-squared =          1.166 for     57 degrees of freedom 
# Null hypothesis probability =   1.827538e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.341e-07   2.849e-08
25- 50  4.017e-07   6.324e-08
50-150  3.110e-07   8.868e-08
15-150  8.468e-07   1.377e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 83.3115       (-25.2401      47.2616)
Norm        : 3.88558       (-0.646832     0.782651)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.63 using 59 PHA bins.
# Reduced chi-squared =          1.116 for     57 degrees of freedom 
# Null hypothesis probability =   2.545013e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.016e-07   3.405e-08
25- 50  3.351e-07   4.479e-08
50-150  4.859e-07   2.234e-07
15-150  1.023e-06   2.270e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.50203        (-5.57632      -6.56034)
R1^2/D10^2  : 0.954084        (-0.690588      0.529173)
kT2 [keV]   : 15.8373        (-15.3198      -16.0553)
R2^2/D10^2  : 5.20930E-02    (-0.0477273   0.19989)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.97 using 59 PHA bins.
# Reduced chi-squared =          1.127 for     55 degrees of freedom 
# Null hypothesis probability =   2.416004e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.730e-07   9.936e-08
25- 50  3.659e-07   1.845e-07
50-150  4.111e-07   2.386e-07
15-150  9.500e-07   4.944e-07

Peak spectrum fit

Power-law model
Time interval is from    0.420 sec. to    1.420 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72938     ( -0.499305   0.512551 )
Norm@50keV  : 9.32269E-03    ( -0.00313545   0.00309723 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.01 using 59 PHA bins.
# Reduced chi-squared =          1.211 for     57 degrees of freedom 
# Null hypothesis probability =   1.322018e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.25098 ( -0.418289  0.421927 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.61438e-08 ( -2.92402e-08  2.96947e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.420 sec. to    1.420 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.41489     ( -6.06403   2.97747 )
Epeak [keV] : 49.8991      ( -12.4519 54.3148 )
Norm@50keV  : 0.430053    ( -0.471667   209.941 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.70 using 59 PHA bins.
# Reduced chi-squared =          1.173 for     56 degrees of freedom 
# Null hypothesis probability =   1.760567e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.15677 ( -0.434677  0.4352 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.52795e-08 ( -2.55025e-08  2.92615e-08 ) ergs/cm2
 
Band function
Time interval is from    0.420 sec. to    1.420 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.68656   ( -3.11488   -3.14437 )
beta        : -9.99945    ( 9.99945   19.9989 )
Epeak [keV] : 49.6903      ( -11.8378 55.2328 )
Norm@50keV   : 0.595607    ( -0.595607   22.0217 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.70 using 59 PHA bins.
# Reduced chi-squared =          1.194 for     55 degrees of freedom 
# Null hypothesis probability =   1.531670e-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]    : 12.8499  (-3.07943  4.01431)
R^2/D10^2   : 0.269831  (-0.269831   0.479272)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.64 using 59 PHA bins.
# Reduced chi-squared =          1.152 for     57 degrees of freedom 
# Null hypothesis probability =   2.022468e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.450e-09   6.055e-09
25- 50  3.214e-08   2.000e-08
50-150  3.332e-08   2.313e-08
15-150  7.491e-08   4.040e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.8118       (-55.5546      -99.9555)
Norm        : 5.77146       (-2.17143     3.02474)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.95 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     57 degrees of freedom 
# Null hypothesis probability =   1.520046e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.508e-08   9.805e-09
25- 50  2.607e-08   1.630e-08
50-150  4.221e-08   3.414e-08
15-150  8.337e-08   5.745e-08
Double BB
R1^2/D10^2  : 4.62148E-05        (-4.6206e-05      -4.6206e-05)
kT2 [keV]   : 12.0166        (-3.1639      4.44216)
R2^2/D10^2  : 0.327986    (-0.228966   0.589308)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.62 using 59 PHA bins.
#Fit statistic : Chi-Squared =          65.39 using 59 PHA bins.
#Fit statistic : Chi-Squared =          65.29 using 59 PHA bins.
# Reduced chi-squared =          1.193 for     55 degrees of freedom 
# Reduced chi-squared =          1.189 for     55 degrees of freedom 
# Reduced chi-squared =          1.187 for     55 degrees of freedom 
# Null hypothesis probability =   1.547553e-01
# Null hypothesis probability =   1.593213e-01
# Null hypothesis probability =   1.614696e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.021e-08   7.130e-09
25- 50  3.182e-08   2.328e-08
50-150  3.369e-08   2.393e-08
15-150  7.572e-08   5.270e-08
Plot creation:
Sat Apr  1 05:18:17 EDT 2017