batgrbproduct Analysis for Trigger=671231

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jan 22 15:50:24 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger671231/GCN5_download_cron
======================================================================

  Trigger: 00671231      Segment: 000

  BAT Trigger Time: 475077053.44   [s; MET]
      Trigger Stop: 475077054.464   [s; MET]
               UTC: 2016-01-21T13:50:37.710700    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 109.079402870934   Dec: -23.578027813169  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.25
     Image Trigger?:     NO
     Rate S/N Ratio:     10.0498756211209  [ if not an image trigger ]
     Image S/N Ratio:    7.25

  Flight Position:   [ source = BAT ]
    RA: 109.079402870934   Dec: -23.578027813169  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 109.079721385807   Dec: -23.5901181829125  [deg; J2000]  
        { 07h 16m 19.1s , -23d 35' 24.4" }
         +/- 1.1874167712587 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.426302490735641 [arcmin] (formal 1-sigma fit error)
    SNR: 23.7981068685425
 
  Angular difference between Flight and Ground position is 0.725634 arcmin
 
  Partial Coding Fraction: 0.9140625    [ including projection effects ]

  Duration
     T90: 12.0359999537468 +/- 2.38388672767792
        Measured from: 0.524000108242035
                   to: 12.5600000619888     [s; relative to TRIGTIME]
     T50: 4.30399996042252 +/- 0.967803687827393
        Measured from: 2.55200010538101
                   to: 6.85600006580353     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.75999999046326     
                   to: 3.75999999046326     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0279999971389771     
                   to: 14.972000002861     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.348355   0.427770   0.258665   0.067039
           0.026281   0.027357   0.022704   0.018454 [error]
 Peak      0.046856   0.061370   0.029905   0.008338
           0.007110   0.007479   0.006098   0.005095 [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 1.10e-07 1.71e-07 2.00e-07 4.51e-07 6.12e-07 9.32e-07   erg/cm2
              Error 1.24e-08 1.26e-08 2.20e-08 1.01e-07 5.18e-08 1.22e-07   erg/cm2
Peak flux Power-law 4.74e-01 3.95e-01 2.24e-01 1.88e-01 1.18e+00 1.28e+00   ph/cm2/s
              Error 9.90e-02 5.76e-02 4.95e-02 7.88e-02 1.72e-01 1.90e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.00e-07 1.85e-07 2.01e-07 1.55e-07 5.75e-07 6.42e-07   erg/cm2
              Error 1.44e-08 1.69e-08 2.45e-08 1.30e-07 5.79e-08 1.42e-07   erg/cm2
Peak flux Cutoff-PL 4.35e-01 4.41e-01 2.25e-01 6.40e-02 1.15e+00 1.17e+00   ph/cm2/s
              Error 1.12e-01 8.11e-02 5.77e-02 1.11e-01 1.74e-01 1.97e-01   ph/cm2/s
 
Fluence        Band 9.92e-08 1.85e-07 1.99e-07 2.17e-07 5.75e-07 7.02e-07   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    1.773    0.130    -      -           4.43e-03 3.62e-04   46.570 57
CPL   1.046    0.589      59.6   28.0      1.10e-02 9.19e-03   41.270 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.820    0.251    -      -           8.46e-03 1.45e-03   56.260 57
CPL   0.928    1.190      51.5  -18.1      2.74e-02 8.44e-02   54.180 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: 8.576000 sec.
T50 in the 50-300 keV band: 4.352000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   15.000   -0.028   14.972
T90    12.036    0.524   12.560
T50     4.304    2.552    6.856
Peak    1.000    2.760    3.760

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  109.0797 -23.5901 0.0080   22.8    7.7       0.9790    23.8  TRIG_00671231       
------------------------------------------
 
Foreground time interval of the image:
 -0.028  10.461 (delta_t =  10.489 [sec])
Background time interval of the image:
-239.440  -0.028 (delta_t = 239.412 [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   -0.028 sec. to   14.972 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.77290     ( -0.128593   0.131498 )
Norm@50keV  : 4.43017E-03    ( -0.000363944   0.000360132 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.57 using 59 PHA bins.
# Reduced chi-squared =         0.8170 for     57 degrees of freedom 
# Null hypothesis probability =   8.365760e-01
 
Photon flux (15-150 keV)    in 15 sec: 0.604172 ( -0.0450322  0.045068 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.1245e-07 ( -5.15175e-08  5.20206e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.028 sec. to   14.972 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04558     ( -0.629315   0.549344 )
Epeak [keV] : 59.5537      ( -11.254 44.779 )
Norm@50keV  : 1.10123E-02    ( -0.00538856   0.0129879 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.27 using 59 PHA bins.
# Reduced chi-squared =         0.7369 for     56 degrees of freedom 
# Null hypothesis probability =   9.295638e-01
 
Photon flux (15-150 keV)    in 15 sec: 0.586103 ( -0.046998  0.046992 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.74995e-07 ( -5.72295e-08  5.85735e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.028 sec. to   14.972 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.02385   ( -0.567175   5.91393 )
beta        : -2.62664    ( 2.64884   0.817285 )
Epeak [keV] : 58.7313      ( -31.3456 41.1106 )
Norm@50keV   : 1.13474E-02    ( -0.00585241   0.402545 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.20 using 59 PHA bins.
# Reduced chi-squared =         0.7491 for     55 degrees of freedom 
# Null hypothesis probability =   9.162328e-01
 
Photon flux (15-150 keV)    in 15 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.75494e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.0814  (-1.02085  1.12221)
R^2/D10^2   : 0.143059  (-0.0404461   0.0557494)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.29 using 59 PHA bins.
# Reduced chi-squared =          1.251 for     57 degrees of freedom 
# Null hypothesis probability =   9.649141e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.628e-08   9.818e-09
25- 50  2.103e-07   1.912e-08
50-150  1.854e-07   3.312e-08
15-150  4.619e-07   3.930e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 104.293       (-25.0951      39.3826)
Norm        : 2.65179       (-0.259255     0.302288)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.76 using 59 PHA bins.
# Reduced chi-squared =         0.7326 for     57 degrees of freedom 
# Null hypothesis probability =   9.351569e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.040e-07   1.261e-08
25- 50  1.812e-07   1.448e-08
50-150  3.007e-07   1.043e-07
15-150  5.859e-07   1.136e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.93856        (-1.62072      1.99772)
R1^2/D10^2  : 1.12759        (-0.673088      2.52343)
kT2 [keV]   : 18.6943        (-3.49877      7.05159)
R2^2/D10^2  : 2.16064E-02    (-0.0158318   0.0300085)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.69 using 59 PHA bins.
# Reduced chi-squared =         0.7581 for     55 degrees of freedom 
# Null hypothesis probability =   9.071389e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.005e-07   3.944e-08
25- 50  1.826e-07   5.494e-08
50-150  2.792e-07   1.199e-07
15-150  5.623e-07   2.021e-07

Peak spectrum fit

Power-law model
Time interval is from    2.760 sec. to    3.760 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.81957     ( -0.243858   0.258155 )
Norm@50keV  : 8.46308E-03    ( -0.00146786   0.00143144 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.26 using 59 PHA bins.
# Reduced chi-squared =         0.9870 for     57 degrees of freedom 
# Null hypothesis probability =   5.027712e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.17516 ( -0.171563  0.17159 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.78645e-08 ( -1.34257e-08  1.37288e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    2.760 sec. to    3.760 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.928328     ( -1.37009   1.00911 )
Epeak [keV] : 51.4712      ( -15.3326 -51.4711 )
Norm@50keV  : 2.74029E-02    ( -0.0274031   0.141327 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.18 using 59 PHA bins.
# Reduced chi-squared =         0.9674 for     56 degrees of freedom 
# Null hypothesis probability =   5.442207e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.14939 ( -0.174195  0.17423 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.21095e-08 ( -1.40932e-08  1.51563e-08 ) ergs/cm2
 
Band function
Time interval is from    2.760 sec. to    3.760 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.990471   ( 0.990471   0.990471 )
beta        : -6.07551    ( 4.59793   14.5979 )
Epeak [keV] : 52.1614      ( -52.1611 -52.1611 )
Norm@50keV   : 2.52331E-02    ( -0.0252715   1.89507e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.18 using 59 PHA bins.
# Reduced chi-squared =         0.9852 for     55 degrees of freedom 
# Null hypothesis probability =   5.057844e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.23077e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.0594  (-1.69695  2.03769)
R^2/D10^2   : 0.396719  (-0.187245   0.341026)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.19 using 59 PHA bins.
# Reduced chi-squared =          1.073 for     57 degrees of freedom 
# Null hypothesis probability =   3.281281e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.015e-08   2.408e-09
25- 50  2.890e-08   6.205e-09
50-150  2.005e-08   6.705e-09
15-150  5.909e-08   1.297e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 88.9909       (-33.1904      77.9584)
Norm        : 5.42175       (-1.0225     1.30122)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.46 using 59 PHA bins.
# Reduced chi-squared =         0.9555 for     57 degrees of freedom 
# Null hypothesis probability =   5.708280e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.414e-08   2.860e-09
25- 50  2.386e-08   4.390e-09
50-150  3.608e-08   1.904e-08
15-150  7.408e-08   2.231e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.93201        (-3.30257      3.95417)
R1^2/D10^2  : 2.29953        (-1.78557      3.8647)
kT2 [keV]   : 17.6427        (-5.8854      44.0509)
R2^2/D10^2  : 4.97393E-02    (-0.0489956   0.238056)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.33 using 59 PHA bins.
# Reduced chi-squared =         0.9878 for     55 degrees of freedom 
# Null hypothesis probability =   5.001350e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.369e-08   7.465e-09
25- 50  2.449e-08   1.232e-08
50-150  3.283e-08   1.858e-08
15-150  7.102e-08   3.743e-08
Plot creation:
Fri Jan 22 15:55:22 EST 2016