batgrbproduct Analysis for Trigger=673978

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Feb 17 17:27:29 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger673978/GCN5_download_cron
======================================================================

  Trigger: 00673978      Segment: 000

  BAT Trigger Time: 477342647.296   [s; MET]
      Trigger Stop: 477342648.32   [s; MET]
               UTC: 2016-02-16T19:10:31.443760    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 311.705819095242   Dec: -71.5551525128288  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    20.11
     Image Trigger?:     NO
     Rate S/N Ratio:     74.1822081094921  [ if not an image trigger ]
     Image S/N Ratio:    20.11

  Flight Position:   [ source = BAT ]
    RA: 311.705819095242   Dec: -71.5551525128288  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 311.679179433766   Dec: -71.5502839473414  [deg; J2000]  
        { 20h 46m 43.0s , -71d 33' 01.0" }
         +/- 0.909807626011147 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.298470491925989 [arcmin] (formal 1-sigma fit error)
    SNR: 34.8146350891311
 
  Angular difference between Flight and Ground position is 0.584074 arcmin
 
  Partial Coding Fraction: 0.4804688    [ including projection effects ]

  Duration
     T90: 11 +/- 1
        Measured from: -0.295999884605408
                   to: 10.7040001153946     [s; relative to TRIGTIME]
     T50: 2 +/- 1
        Measured from: 0.704000115394592
                   to: 2.70400011539459     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.703999996185303     
                   to: 1.7039999961853     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.296000003814697     
                   to: 11.7039999961853     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.648034   1.181179   0.869312   0.337326
           0.045725   0.044533   0.039344   0.029668 [error]
 Peak      0.172185   0.306873   0.283996   0.088923
           0.015394   0.016724   0.016173   0.011504 [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 2.69e-07 5.02e-07 7.21e-07 2.20e-06 2.05e-06 3.69e-06   erg/cm2
              Error 2.29e-08 2.53e-08 3.88e-08 2.63e-07 9.61e-08 2.85e-07   erg/cm2
Peak flux Power-law 2.08e+00 2.36e+00 1.91e+00 2.58e+00 7.30e+00 8.94e+00   ph/cm2/s
              Error 2.36e-01 1.63e-01 1.30e-01 3.68e-01 4.50e-01 5.37e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.59e-07 5.10e-07 7.34e-07 1.70e-06 2.03e-06 3.21e-06   erg/cm2
              Error 2.09e-08 2.85e-08 4.37e-08 5.87e-07 1.03e-07 6.19e-07   erg/cm2
Peak flux Cutoff-PL 1.99e+00 2.40e+00 1.96e+00 2.06e+00 7.24e+00 8.40e+00   ph/cm2/s
              Error 2.88e-01 1.79e-01 1.53e-01 7.13e-01 4.59e-01 8.87e-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    1.476    0.079    -      -           1.80e-02 7.96e-04   53.400 57
CPL   1.293    0.271     207.5    0.0      2.19e-02 0.00e+00   52.310 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.303    0.102    -      -           6.12e-02 3.59e-03   59.370 57
CPL   1.088    0.336     232.5    0.0      7.72e-02 2.98e-02   58.420 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: 10.624000 sec.
T50 in the 50-300 keV band: 2.624000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   12.000   -0.296   11.704
T90    11.000   -0.296   10.704
T50     2.000    0.704    2.704
Peak    1.000    0.704    1.704

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  311.6792 -71.5503 0.0055   41.2  -24.8       3.1202    34.8  TRIG_00673978       
------------------------------------------
 
Foreground time interval of the image:
 -0.296  11.704 (delta_t =  12.000 [sec])
Background time interval of the image:
-183.995  -0.296 (delta_t = 183.699 [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   -0.296 sec. to   11.704 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.47605     ( -0.0790605   0.0789141 )
Norm@50keV  : 1.79578E-02    ( -0.000795995   0.000795928 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.40 using 59 PHA bins.
# Reduced chi-squared =         0.9369 for     57 degrees of freedom 
# Null hypothesis probability =   6.107814e-01
 
Photon flux (15-150 keV)    in 12 sec: 2.22772 ( -0.107221  0.107538 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.05254e-06 ( -9.5982e-08  9.61523e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.296 sec. to   11.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29336     ( -0.315924   0.226634 )
Epeak [keV] : 207.537      (   )
Norm@50keV  : 2.19364E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.31 using 59 PHA bins.
# Reduced chi-squared =         0.9341 for     56 degrees of freedom 
# Null hypothesis probability =   6.154208e-01
 
Photon flux (15-150 keV)    in 12 sec: 2.20567 ( -0.1125  0.11282 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.03191e-06 ( -1.03164e-07  1.0242e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.296 sec. to   11.704 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.426554   ( -1.06639   3.7128 )
beta        : -1.61444    ( -0.158487   0.125167 )
Epeak [keV] : 43.5137      ( -19.3634 41.7281 )
Norm@50keV   : 0.273852    ( -0.273171   43.5491 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.36 using 59 PHA bins.
# Reduced chi-squared =         0.8430 for     55 degrees of freedom 
# Null hypothesis probability =   7.899916e-01
 
Photon flux (15-150 keV)    in 12 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]    : 16.0169  (  )
R^2/D10^2   : 0.198123  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         170.70 using 59 PHA bins.
# Reduced chi-squared =         2.9948 for     57 degrees of freedom 
# Null hypothesis probability =   2.802338e-13
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.261e-07   1.119e-08
25- 50  5.310e-07   3.138e-08
50-150  9.526e-07   7.758e-08
15-150  1.610e-06   8.820e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-17.3492      -200)
Norm        : 9.21538       (-0.408753     0.408753)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.75 using 59 PHA bins.
# Reduced chi-squared =         0.9957 for     57 degrees of freedom 
# Null hypothesis probability =   4.843202e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.754e-07   1.398e-08
25- 50  5.297e-07   2.802e-08
50-150  1.162e-06   5.448e-08
15-150  1.967e-06   1.002e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.21138        (-1.01359      1.07191)
R1^2/D10^2  : 1.01073        (-0.297066      0.456241)
kT2 [keV]   : 40.0179        (-8.03907      15.2021)
R2^2/D10^2  : 6.69083E-03    (-0.00397928   0.00707732)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.86 using 59 PHA bins.
# Reduced chi-squared =         0.7611 for     55 degrees of freedom 
# Null hypothesis probability =   9.039507e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.193e-07   2.808e-08
25- 50  5.597e-07   5.928e-08
50-150  1.265e-06   3.790e-07
15-150  2.044e-06   4.855e-07

Peak spectrum fit

Power-law model
Time interval is from    0.704 sec. to    1.704 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.30329     ( -0.101737   0.101386 )
Norm@50keV  : 6.11530E-02    ( -0.00359443   0.00359443 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.37 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     57 degrees of freedom 
# Null hypothesis probability =   3.894207e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.30015 ( -0.450024  0.450814 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.0382e-07 ( -3.84299e-08  3.85336e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.704 sec. to    1.704 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08798     ( -0.406089   0.265051 )
Epeak [keV] : 232.456      ( -232.456 -232.456 )
Norm@50keV  : 7.72031E-02    ( -0.0186709   0.0410027 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.42 using 59 PHA bins.
# Reduced chi-squared =          1.043 for     56 degrees of freedom 
# Null hypothesis probability =   3.866116e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.23623 ( -0.4553  0.46331 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.98041e-07 ( -4.0412e-08  4.0076e-08 ) ergs/cm2
 
Band function
Time interval is from    0.704 sec. to    1.704 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.50070   ( -10.7712   -3.50279 )
beta        : -1.39615    ( -0.147685   0.129808 )
Epeak [keV] : 30.3219      ( -6.58563 96.0976 )
Norm@50keV   : 172.910    ( -175.49   733.845 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.28 using 59 PHA bins.
# Reduced chi-squared =          1.005 for     55 degrees of freedom 
# Null hypothesis probability =   4.642322e-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]    : 18.0137  (  )
R^2/D10^2   : 0.461923  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         123.91 using 59 PHA bins.
# Reduced chi-squared =         2.1739 for     57 degrees of freedom 
# Null hypothesis probability =   7.279765e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.000e-08   3.720e-09
25- 50  1.388e-07   1.255e-08
50-150  3.271e-07   3.340e-08
15-150  4.959e-07   3.755e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-13.408      -200)
Norm        : 30.5537       (-1.81611     1.81611)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.46 using 59 PHA bins.
# Reduced chi-squared =          1.341 for     57 degrees of freedom 
# Null hypothesis probability =   4.365248e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.610e-08   5.395e-09
25- 50  1.464e-07   1.080e-08
50-150  3.211e-07   6.325e-08
15-150  5.436e-07   4.140e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.62425        (-1.42006      1.63776)
R1^2/D10^2  : 3.57843        (-1.47154      2.7672)
kT2 [keV]   : 35.3072        (-6.93074      13.5965)
R2^2/D10^2  : 3.93741E-02    (-0.0246367   0.0426706)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.13 using 59 PHA bins.
# Reduced chi-squared =         0.9842 for     55 degrees of freedom 
# Null hypothesis probability =   5.077484e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.752e-08   1.360e-08
25- 50  1.458e-07   2.559e-08
50-150  4.013e-07   1.435e-07
15-150  6.047e-07   1.567e-07
Plot creation:
Wed Feb 17 17:35:35 EST 2016