batgrbproduct analysis for trigger=736843

batgrbproduct Analysis for Trigger=736843

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Feb  6 18:09:42 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger736843/GCN5_download_cron
======================================================================

  Trigger: 00736843      Segment: 000

  BAT Trigger Time: 507991168.52   [s; MET]
      Trigger Stop: 507991168.584   [s; MET]
               UTC: 2017-02-05T12:39:09.951640    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 262.150840978483   Dec: -0.0526188988923711  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.3
     Image Trigger?:     NO
     Rate S/N Ratio:     10.8627804912002  [ if not an image trigger ]
     Image S/N Ratio:    8.3

  Flight Position:   [ source = BAT ]
    RA: 262.150840978483   Dec: -0.0526188988923711  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 262.157397386778   Dec: -0.0584459131925322  [deg; J2000]  
        { 17h 28m 37.8s , -00d 03' 30.4" }
         +/- 0.888671256534443 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.264568952470525 [arcmin] (formal 1-sigma fit error)
    SNR: 36.003550605403
 
  Angular difference between Flight and Ground position is 0.526295 arcmin
 
  Partial Coding Fraction: 0.9140625    [ including projection effects ]

  Duration
     T90: 26.0639999508858 +/- 3.22152074752987
        Measured from: -0.11599987745285
                   to: 25.9480000734329     [s; relative to TRIGTIME]
     T50: 17.1039999723434 +/- 0.709289799759181
        Measured from: 3.38400012254715
                   to: 20.4880000948906     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.296000003814697     
                   to: 0.703999996185303     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.42399996519089     
                   to: 46.3960000276566     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.386292   2.743149   1.496317   0.285968
           0.062404   0.061747   0.054795   0.053741 [error]
 Peak      0.143978   0.210008   0.146371   0.036740
           0.010594   0.011224   0.010283   0.009050 [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 7.37e-07 1.09e-06 1.21e-06 2.52e-06 3.80e-06 5.56e-06   erg/cm2
              Error 4.24e-08 3.55e-08 5.71e-08 2.63e-07 1.29e-07 3.02e-07   erg/cm2
Peak flux Power-law 1.40e+00 1.42e+00 1.01e+00 1.15e+00 4.29e+00 4.99e+00   ph/cm2/s
              Error 1.55e-01 9.46e-02 8.54e-02 2.01e-01 2.72e-01 3.23e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.09e-07 1.11e-06 1.21e-06 1.78e-06 3.72e-06 4.82e-06   erg/cm2
              Error 5.27e-08 4.14e-08 5.89e-08 7.14e-07 1.64e-07 6.48e-07   erg/cm2
Peak flux Cutoff-PL 1.35e+00 1.45e+00 1.03e+00 8.78e-01 4.24e+00 4.71e+00   ph/cm2/s
              Error 1.83e-01 1.11e-01 9.13e-02 4.09e-01 2.89e-01 5.19e-01   ph/cm2/s
 
Fluence        Band 6.73e-07 1.12e-06 1.19e-06 2.28e-06 3.71e-06 5.27e-06   erg/cm2
              Error 6.15e-08 -------- 6.08e-08 -------- 1.51e-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    1.853    0.065    -      -           8.65e-03 2.91e-04   39.200 57
CPL   1.640    0.259      80.2  -29.3      1.11e-02 3.34e-03   37.140 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.489    0.115    -      -           3.45e-02 2.25e-03   42.670 57
CPL   1.280    0.375     167.6    0.0      4.42e-02 2.23e-02   42.010 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: 22.272000 sec.
T50 in the 50-300 keV band: 17.856000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   47.820   -1.424   46.396
T90    26.064   -0.116   25.948
T50    17.104    3.384   20.488
Peak    1.000   -0.296    0.704

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  262.1574  -0.0584 0.0053   16.5  146.7       2.3774    36.0  TRIG_00736843       
------------------------------------------
 
Foreground time interval of the image:
 -1.424   9.081 (delta_t =  10.505 [sec])
Background time interval of the image:
-60.520  -1.424 (delta_t =  59.096 [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   -1.424 sec. to   46.396 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.85331     ( -0.0645488   0.065027 )
Norm@50keV  : 8.65119E-03    ( -0.000291497   0.000290298 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.20 using 59 PHA bins.
# Reduced chi-squared =         0.6877 for     57 degrees of freedom 
# Null hypothesis probability =   9.654051e-01
 
Photon flux (15-150 keV)    in 47.82 sec: 1.21766 ( -0.0412888  0.0414466 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.80374e-06 ( -1.28765e-07  1.29307e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -1.424 sec. to   46.396 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64015     ( -0.269134   0.248548 )
Epeak [keV] : 80.2192      ( -21.7119 -80.2197 )
Norm@50keV  : 1.11253E-02    ( -0.00261037   0.00406329 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.14 using 59 PHA bins.
# Reduced chi-squared =         0.6632 for     56 degrees of freedom 
# Null hypothesis probability =   9.755377e-01
 
Photon flux (15-150 keV)    in 47.82 sec: 1.19628 ( -0.04787  0.04801 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.7171e-06 ( -1.64424e-07  1.64209e-07 ) ergs/cm2
 
Band function
Time interval is from   -1.424 sec. to   46.396 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.755119   ( -0.814884   0.930141 )
beta        : -1.93887    ( 1.94247   0.105715 )
Epeak [keV] : 36.7983      ( -17.3389 51.4497 )
Norm@50keV   : 4.36568E-02    ( -0.0309224   793.625 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.68 using 59 PHA bins.
# Reduced chi-squared =         0.6306 for     55 degrees of freedom 
# Null hypothesis probability =   9.853735e-01
 
Photon flux (15-150 keV)    in 47.82 sec: 1.17928 ( 5.82072  -0.05113 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.71072e-06 ( -3.71038e-06  -1.5322e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.1714  (  )
R^2/D10^2   : 0.255404  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         231.23 using 59 PHA bins.
# Reduced chi-squared =         4.0567 for     57 degrees of freedom 
# Null hypothesis probability =   7.568711e-23
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.831e-07   2.336e-08
25- 50  1.226e-06   4.591e-08
50-150  1.102e-06   8.297e-08
15-150  2.711e-06   9.444e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 97.0546       (-11.8315      14.7228)
Norm        : 5.26946       (-0.270525     0.293686)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.23 using 59 PHA bins.
# Reduced chi-squared =         0.7234 for     57 degrees of freedom 
# Null hypothesis probability =   9.425043e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.585e-07   4.543e-08
25- 50  1.132e-06   4.949e-08
50-150  1.803e-06   4.390e-07
15-150  3.593e-06   4.725e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.02950        (-0.761661      0.780038)
R1^2/D10^2  : 1.46027        (-0.439115      0.729977)
kT2 [keV]   : 25.2052        (-3.60322      5.18386)
R2^2/D10^2  : 1.25467E-02    (-0.00610048   0.0100503)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.78 using 59 PHA bins.
# Reduced chi-squared =         0.7597 for     55 degrees of freedom 
# Null hypothesis probability =   9.054423e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.227e-07   6.647e-08
25- 50  1.144e-06   9.325e-08
50-150  1.897e-06   2.862e-07
15-150  3.663e-06   3.637e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.296 sec. to    0.704 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48925     ( -0.114568   0.115579 )
Norm@50keV  : 3.44787E-02    ( -0.00225545   0.00224379 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.67 using 59 PHA bins.
# Reduced chi-squared =         0.7486 for     57 degrees of freedom 
# Null hypothesis probability =   9.208633e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.29197 ( -0.271878  0.272101 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.27665e-07 ( -2.38813e-08  2.41056e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.296 sec. to    0.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27963     ( -0.479625   0.270103 )
Epeak [keV] : 167.620      ( -167.623 -167.623 )
Norm@50keV  : 4.41993E-02    ( -0.0115909   0.0329106 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.01 using 59 PHA bins.
# Reduced chi-squared =         0.7501 for     56 degrees of freedom 
# Null hypothesis probability =   9.173613e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.24427 ( -0.28946  0.28848 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.21175e-07 ( -2.7825e-08  2.7565e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.296 sec. to    0.704 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.641064   ( 0.854702   0.854702 )
beta        : -1.61902    ( -1.31571   0.200297 )
Epeak [keV] : 57.9674      ( -58.0814 525.363 )
Norm@50keV   : 0.113126    ( -0.111832   3741.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.99 using 59 PHA bins.
# Reduced chi-squared =         0.7453 for     55 degrees of freedom 
# Null hypothesis probability =   9.199424e-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]    : 14.1140  (-1.1564  1.29439)
R^2/D10^2   : 0.590787  (-0.156216   0.207327)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          93.82 using 59 PHA bins.
# Reduced chi-squared =          1.646 for     57 degrees of freedom 
# Null hypothesis probability =   1.535386e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.484e-08   2.870e-09
25- 50  9.313e-08   7.475e-09
50-150  1.227e-07   1.705e-08
15-150  2.406e-07   1.925e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-41.3403      -200)
Norm        : 17.4717       (-1.09211     1.09211)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.76 using 59 PHA bins.
# Reduced chi-squared =         0.7502 for     57 degrees of freedom 
# Null hypothesis probability =   9.192863e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.360e-08   3.045e-09
25- 50  8.388e-08   7.315e-09
50-150  1.840e-07   4.560e-08
15-150  3.114e-07   6.415e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.27275        (-1.66189      1.69859)
R1^2/D10^2  : 2.69531        (-1.15471      2.68867)
kT2 [keV]   : 33.0845        (-9.09845      24.0265)
R2^2/D10^2  : 2.36668E-02    (-0.0186081   0.0488843)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.42 using 59 PHA bins.
# Reduced chi-squared =         0.7712 for     55 degrees of freedom 
# Null hypothesis probability =   8.926434e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.797e-08   8.055e-09
25- 50  8.772e-08   1.803e-08
50-150  1.990e-07   9.151e-08
15-150  3.247e-07   1.108e-07
Plot creation:
Mon Feb  6 18:37:55 EST 2017