batgrbproduct Analysis for Trigger=690738

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jun 13 15:47:35 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger690738/GCN5_download_cron
======================================================================

  Trigger: 00690738      Segment: 000

  BAT Trigger Time: 487441488   [s; MET]
      Trigger Stop: 487441552   [s; MET]
               UTC: 2016-06-12T16:24:31.593800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 245.086032320401   Dec: -15.585862654991  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    9.83
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.83

  Flight Position:   [ source = BAT ]
    RA: 245.086032320401   Dec: -15.585862654991  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 244.980617202047   Dec: -15.6359463753334  [deg; J2000]  
        { 16h 19m 55.3s , -15d 38' 09.4" }
         +/- 0.769293852450832 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.256555448860597 [arcmin] (formal 1-sigma fit error)
    SNR: 44.2429136555041
 
  Angular difference between Flight and Ground position is 6.792469 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 600.955999970436 +/- 46.3032199673105
        Measured from: -24.6279999017715
                   to: 576.328000068665     [s; relative to TRIGTIME]
     T50: 312.523999929428 +/- 19.0335493615841
        Measured from: 63.1800001263618
                   to: 375.70400005579     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -48.1759999990463     
                   to: -47.1759999990463     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -49.6320000290871     
                   to: 771.152000010014     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    42.679796   4.589340   0.418465  -0.354597
           0.261934   0.230985   0.202166   0.203367 [error]
 Peak      0.046712   0.023184   0.018057   0.026419
           0.015811   0.014893   0.013417   0.013873 [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 1.43e-05 1.91e-06 1.12e-07 6.99e-09 1.63e-05 1.63e-05   erg/cm2
              Error 1.05e-06 1.38e-07 2.28e-08 2.48e-09 1.03e-06 1.03e-06   erg/cm2
Peak flux Power-law 4.67e-01 2.11e-01 5.73e-02 1.93e-02 7.47e-01 7.55e-01   ph/cm2/s
              Error 2.37e-01 1.72e-01 8.20e-02 6.82e-02 3.48e-01 3.59e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.33e-05 1.64e-06 5.97e-09 6.67e-14 1.49e-05 1.49e-05   erg/cm2
              Error 1.25e-06 1.63e-07 8.93e-09 2.49e-12 1.26e-06 1.26e-06   erg/cm2
Peak flux Cutoff-PL 4.77e-01 1.99e-01 4.97e-02 1.52e-02 7.36e-01 7.46e-01   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    6.085    0.204    -      -           1.49e-04 2.41e-05   88.390 57
CPL   1.000    0.000      50.0    0.0      1.88e-03 0.00e+00  951.900 56
 
The chi2 of BB fit is 68.59 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.880    1.815    -      -           2.96e-03 3.24e-03   57.410 57
CPL   1.974    0.000       1.0    0.0      1.14e-02 0.00e+00   57.820 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  820.784  -49.632  771.152
T90   600.956  -24.628  576.328
T50   312.524   63.180  375.704
Peak    1.000  -48.176  -47.176

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  244.9806 -15.6359 0.0043   15.5   69.7       6.2347    44.2  TRIG_00690738       
------------------------------------------
 
Foreground time interval of the image:
-14.799  71.701 (delta_t =  86.500 [sec])
Background time interval of the image:

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
Multiple GTIs in the spectrum
tstart tstop
-49.632000 463.570000
465.000000 771.152000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 6.08512     ( -0.204868   0.203581 )
Norm@50keV  : 1.48743E-04    ( -2.25804e-05   2.57165e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.39 using 59 PHA bins.
# Reduced chi-squared =          1.551 for     57 degrees of freedom 
# Null hypothesis probability =   4.844280e-03
 
Photon flux (15-150 keV)    in 819.4 sec: 0.666853 ( -0.04619  0.046922 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.63432e-05 ( -1.02314e-06  1.03772e-06 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-49.632000 463.570000
465.000000 771.152000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.87574E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         951.90 using 59 PHA bins.
# Reduced chi-squared =         16.998 for     56 degrees of freedom 
# Null hypothesis probability =  3.793112e-163
 
Photon flux (15-150 keV)    in 819.4 sec: 0.604671 ( -0.057113  0.056187 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.49053e-05 ( -1.26843e-06  1.24598e-06 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-49.632000 463.570000
465.000000 771.152000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.77923   ( 4.60954   8.77923 )
beta        : -6.10065    ( -0.193765   0.215515 )
Epeak [keV] : 272.212      ( -272.212 -272.212 )
Norm@50keV   : 1.99544E-02    ( -0.00295614   0.00361212 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.41 using 59 PHA bins.
# Reduced chi-squared =          1.607 for     55 degrees of freedom 
# Null hypothesis probability =   2.859815e-03
 
Photon flux (15-150 keV)    in 819.4 sec: 0.606362 (    ) 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]    : 2.86570  (-0.113345  0.122442)
R^2/D10^2   : 109.516  (-32.0853   44.6592)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.59 using 59 PHA bins.
# Reduced chi-squared =          1.203 for     57 degrees of freedom 
# Null hypothesis probability =   1.398009e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.255e-05   1.135e-06
25- 50  1.555e-06   1.393e-07
50-150  1.711e-09   6.076e-10
15-150  1.411e-05   1.327e-06
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 4.96800       (-0.279269      0.310351)
Norm        : 145.359       (-35.588     46.5893)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.67 using 59 PHA bins.
# Reduced chi-squared =          1.152 for     57 degrees of freedom 
# Null hypothesis probability =   2.017103e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.344e-05   1.270e-06
25- 50  1.675e-06   1.377e-07
50-150  8.403e-09   2.904e-09
15-150  1.513e-05   1.131e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.80172        (-1.6433      0.132717)
R1^2/D10^2  : 129.371        (-40.8423      183.944)
kT2 [keV]   : 15.3729        (-14.4214      31.8101)
R2^2/D10^2  : 1.08517E-03    (-0.00102413   0.105286)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.69 using 59 PHA bins.
# Reduced chi-squared =          1.158 for     55 degrees of freedom 
# Null hypothesis probability =   1.973066e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.284e-05   1.340e-06
25- 50  1.638e-06   2.102e-07
50-150  2.907e-07   2.329e-07
15-150  1.477e-05   1.725e-06

Peak spectrum fit

Power-law model
Time interval is from  -48.176 sec. to  -47.176 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.88038     ( -1.13994   2.48934 )
Norm@50keV  : 2.95904E-03    ( -0.00295819   0.00352413 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.41 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     57 degrees of freedom 
# Null hypothesis probability =   4.599532e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.746992 ( -0.349506  0.346448 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.37311e-08 ( -2.04515e-08  2.62299e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -48.176 sec. to  -47.176 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.97377     (     )
Epeak [keV] : 1.00576      (   )
Norm@50keV  : 1.13549E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.82 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     56 degrees of freedom 
# Null hypothesis probability =   4.076987e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.735965 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.30047e-08 ( -1.97361e-08  2.69595e-08 ) ergs/cm2
 
Band function
Time interval is from  -48.176 sec. to  -47.176 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -8.83754   ( 8.83754   8.83754 )
beta        : -2.88089    ( -2.48568   1.13943 )
Epeak [keV] : 16.1121      ( -16.1121 -16.1121 )
Norm@50keV   : 0.402009    ( -0.402053   0.478986 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.41 using 59 PHA bins.
# Reduced chi-squared =          1.044 for     55 degrees of freedom 
# Null hypothesis probability =   3.860255e-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]    : 5.05355  (-2.97865  4.07585)
R^2/D10^2   : 5.64765  (-5.64014   851.91)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.98 using 59 PHA bins.
# Reduced chi-squared =          1.035 for     57 degrees of freedom 
# Null hypothesis probability =   4.029113e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.433e-08   9.090e-09
25- 50  9.608e-09   7.055e-09
50-150  4.112e-10   4.958e-10
15-150  2.435e-08   1.513e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 18.6363       (-18.8129      120.466)
Norm        : 9.58162       (-9.42875     156.822)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.13 using 59 PHA bins.
# Reduced chi-squared =          1.020 for     57 degrees of freedom 
# Null hypothesis probability =   4.335476e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.396e-08   8.755e-09
25- 50  1.156e-08   8.350e-09
50-150  3.067e-09   3.660e-09
15-150  2.859e-08   1.909e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.28818        (-3.24315      4.10456)
R1^2/D10^2  : 39.0646        (-44.8979      -44.8979)
kT2 [keV]   : 17.6427        (-17.3115      -17.3115)
R2^2/D10^2  : 2.36464E-02    (-0.0262099   44.7928)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.30 using 59 PHA bins.
# Reduced chi-squared =          1.042 for     55 degrees of freedom 
# Null hypothesis probability =   3.899978e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.411e-08   8.260e-09
25- 50  9.263e-09   5.190e-09
50-150  1.519e-08   1.298e-08
15-150  3.856e-08   2.409e-08
Plot creation:
Mon Jun 13 15:55:22 EDT 2016