batgrbproduct analysis for trigger=739517

batgrbproduct Analysis for Trigger=739517

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Feb 23 00:22:27 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger739517/GCN5_download_cron
======================================================================

  Trigger: 00739517      Segment: 000

  BAT Trigger Time: 509423089.728   [s; MET]
      Trigger Stop: 509423090.752   [s; MET]
               UTC: 2017-02-22T02:24:31.077200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 230.669606804857   Dec: -55.7392105197555  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.52
     Image Trigger?:     NO
     Rate S/N Ratio:     23.7276210354093  [ if not an image trigger ]
     Image S/N Ratio:    6.52

  Flight Position:   [ source = BAT ]
    RA: 230.669606804857   Dec: -55.7392105197555  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 230.610354211367   Dec: -55.7334248790827  [deg; J2000]  
        { 15h 22m 26.5s , -55d 44' 00.3" }
         +/- 5.58438186852973 [arcmin] (estimated 90% radius based on SNR)
         +/- 5.12974220253542 [arcmin] (formal 1-sigma fit error)
    SNR: 2.60622005479362
 
  Angular difference between Flight and Ground position is 2.031440 arcmin
 
  Partial Coding Fraction: 0.8359375    [ including projection effects ]

  Duration
     T90: 48 +/- 22.6274169979695
        Measured from: -28.7279998660088
                   to: 19.2720001339912     [s; relative to TRIGTIME]
     T50: 32 +/- 16
        Measured from: -12.7279998660088
                   to: 19.2720001339912     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 26.772000014782     
                   to: 27.772000014782     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -28.727999985218     
                   to: 19.272000014782     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.372795   0.822952   0.382715   0.431671
           0.063610   0.074119   0.071957   0.087488 [error]
 Peak      0.003607   0.010960   0.024538  -0.002731
           0.010560   0.012583   0.012485   0.015732 [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 1.37e-07 2.54e-07 3.63e-07 1.10e-06 1.04e-06 1.85e-06   erg/cm2
              Error 2.70e-08 3.29e-08 6.98e-08 4.38e-07 1.68e-07 5.03e-07   erg/cm2
Peak flux Power-law 5.69e-02 9.64e-02 1.24e-01 3.23e-01 3.66e-01 6.00e-01   ph/cm2/s
              Error 9.45e-02 9.99e-02 1.11e-01 1.25e+00 3.28e-01 1.29e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.26e-07 2.99e-07 3.16e-07 1.25e-07 8.32e-07 8.79e-07   erg/cm2
              Error 4.41e-08 9.14e-08 1.67e-07 5.78e-07 3.05e-07 7.36e-07   erg/cm2
Peak flux Cutoff-PL 5.52e-02 9.67e-02 1.26e-01 2.88e-01 3.65e-01 5.66e-01   ph/cm2/s
              Error 9.41e-02 1.24e-01 1.26e-01 -------- 2.91e-01 1.47e+00   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    1.483    0.227    -      -           2.27e-03 3.23e-04   74.720 57
CPL  -2.357    4.092      41.6  411.2      5.11e-01 9.28e+01   73.090 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.634    1.112    -      -           3.15e-03 2.86e-03   57.550 57
CPL   0.410    0.000     417.5    0.0      3.93e-03 0.00e+00   57.550 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: 67.904000 sec.
T50 in the 50-300 keV band: 32.704000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   48.000  -28.728   19.272
T90    48.000  -28.728   19.272
T50    32.000  -12.728   19.272
Peak    1.000   26.772   27.772

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  230.6104 -55.7334 0.0738   25.9  174.1       0.9144     2.6  TRIG_00739517       
------------------------------------------
 
Foreground time interval of the image:
-28.728  19.272 (delta_t =  48.000 [sec])
Background time interval of the image:
-60.728 -54.977 (delta_t =   5.751 [sec])
-53.728 -28.728 (delta_t =  25.000 [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  -28.728 sec. to   19.272 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48252     ( -0.224269   0.229256 )
Norm@50keV  : 2.26762E-03    ( -0.000326045   0.000320674 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.72 using 59 PHA bins.
# Reduced chi-squared =          1.311 for     57 degrees of freedom 
# Null hypothesis probability =   5.769738e-02
 
Photon flux (15-150 keV)    in 48 sec: 0.281778 ( -0.0363421  0.0363425 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03558e-06 ( -1.6542e-07  1.70645e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -28.728 sec. to   19.272 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.35691     ( -4.04955   4.13418 )
Epeak [keV] : 41.6416      ( -4.74991 817.637 )
Norm@50keV  : 0.510817    ( -0.492619   185.191 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.09 using 59 PHA bins.
# Reduced chi-squared =          1.305 for     56 degrees of freedom 
# Null hypothesis probability =   6.224921e-02
 
Photon flux (15-150 keV)    in 48 sec: 0.263245 0.248755 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.3959e-16 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from  -28.728 sec. to   19.272 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.53418   ( -4.34766   -4.53418 )
beta        : -2.48184    ( -1.02368   0.584753 )
Epeak [keV] : 37.1437      ( -3.69236 4.15613 )
Norm@50keV   : 13.8380    ( -1.73644   69.8511 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.57 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     55 degrees of freedom 
# Null hypothesis probability =   1.557934e-01
 
Photon flux (15-150 keV)    in 48 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]    : 11.1204  (-1.34061  1.61978)
R^2/D10^2   : 9.40866E-02  (-0.0366601   0.0552555)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.41 using 59 PHA bins.
# Reduced chi-squared =          1.288 for     57 degrees of freedom 
# Null hypothesis probability =   7.057805e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.169e-07   2.407e-08
25- 50  3.353e-07   5.969e-08
50-150  2.362e-07   7.243e-08
15-150  6.884e-07   1.238e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-98.293      -199.363)
Norm        : 1.14906       (-0.147899     0.147907)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.99 using 59 PHA bins.
# Reduced chi-squared =          1.298 for     57 degrees of freedom 
# Null hypothesis probability =   6.467364e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.373e-07   7.735e-08
25- 50  2.642e-07   1.474e-07
50-150  5.794e-07   3.230e-07
15-150  9.810e-07   5.462e-07
Double BB
R1^2/D10^2  : 3.91380E-05        (-1.54293e-05      1.54378e-05)
kT2 [keV]   : 9.57288        (-0.964044      1.37927)
R2^2/D10^2  : 0.142412    (-0.0550456   0.0749236)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.41 using 59 PHA bins.
#Fit statistic : Chi-Squared =          60.25 using 59 PHA bins.
#Fit statistic : Chi-Squared =          59.63 using 59 PHA bins.
# Reduced chi-squared =          1.335 for     55 degrees of freedom 
# Reduced chi-squared =          1.095 for     55 degrees of freedom 
# Reduced chi-squared =          1.084 for     55 degrees of freedom 
# Null hypothesis probability =   4.918001e-02
# Null hypothesis probability =   2.916149e-01
# Null hypothesis probability =   3.109455e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Peak spectrum fit

Power-law model
Time interval is from   26.772 sec. to   27.772 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.633926     ( -0.633926   1.58941 )
Norm@50keV  : 3.14809E-03    ( -0.00314809   0.00256536 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.55 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     57 degrees of freedom 
# Null hypothesis probability =   4.545707e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.366121 ( -0.366121  0.289845 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.96143e-08 ( -3.14618e-08  3.37423e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   26.772 sec. to   27.772 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.410088     ( -0.426077   -0.426077 )
Epeak [keV] : 417.530      ( -475.288 -475.288 )
Norm@50keV  : 3.93464E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.55 using 59 PHA bins.
# Reduced chi-squared =          1.028 for     56 degrees of freedom 
# Null hypothesis probability =   4.174820e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.364686 ( -0.290991  0.290859 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.94303e-08 ( -3.94303e-08  3.39121e-08 ) ergs/cm2
 
Band function
Time interval is from   26.772 sec. to   27.772 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.33470   ( -8.48885   4.76004 )
beta        : -0.961772    ( 9.37078   9.37078 )
Epeak [keV] : 34.4198      ( -340.094 -367.714 )
Norm@50keV   : 13.1198    ( -13.0797   35.1067 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.28 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     55 degrees of freedom 
# Null hypothesis probability =   3.907369e-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]    : 32.6700  (-32.6825  -32.6825)
R^2/D10^2   : 4.43462E-03  (-0.00442957   0.760418)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.81 using 59 PHA bins.
# Reduced chi-squared =          1.014 for     57 degrees of freedom 
# Null hypothesis probability =   4.450119e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.016e-10   4.872e-10
25- 50  4.475e-09   3.159e-09
50-150  3.247e-08   2.476e-08
15-150  3.765e-08   2.934e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.361       (-199.363      -199.363)
Norm        : 1.35823       (-1.18586     1.18691)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.64 using 59 PHA bins.
# Reduced chi-squared =          1.029 for     57 degrees of freedom 
# Null hypothesis probability =   4.151196e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.382e-09   2.912e-09
25- 50  6.506e-09   5.375e-09
50-150  1.427e-08   1.205e-08
15-150  2.416e-08   2.018e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 67.9491        (-65.4661      -65.4661)
R1^2/D10^2  : 6.87345E-04        (-0.000796153      0.34)
kT2 [keV]   : 7.69508        (-7.5782      -7.5782)
R2^2/D10^2  : 0.226201    (-0.234059   -0.234059)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.23 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     55 degrees of freedom 
# Null hypothesis probability =   3.923066e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.620e-09   1.806e-09
25- 50  5.911e-09   4.295e-09
50-150  3.354e-08   1.826e-08
15-150  4.207e-08   2.107e-08
Plot creation:
Thu Feb 23 00:27:11 EST 2017