batgrbproduct Analysis for Trigger=672525

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Feb  3 21:53:35 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger672525/GCN5_download_cron
======================================================================

  Trigger: 00672525      Segment: 000

  BAT Trigger Time: 476158406.4   [s; MET]
      Trigger Stop: 476158422.784   [s; MET]
               UTC: 2016-02-03T02:13:10.612140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 161.951792632841   Dec: -24.7621168677871  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.81
     Image Trigger?:     NO
     Rate S/N Ratio:     14.1774468787578  [ if not an image trigger ]
     Image S/N Ratio:    8.81

  Flight Position:   [ source = BAT ]
    RA: 161.951792632841   Dec: -24.7621168677871  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 161.967410774445   Dec: -24.771636583435  [deg; J2000]  
        { 10h 47m 52.2s , -24d 46' 17.9" }
         +/- 1.6771638158786 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.783236155971686 [arcmin] (formal 1-sigma fit error)
    SNR: 14.5310253304108
 
  Angular difference between Flight and Ground position is 1.024828 arcmin
 
  Partial Coding Fraction: 0.203125    [ including projection effects ]

  Duration
     T90: 20.160000026226 +/- 3.23612604894565
        Measured from: 3.86400014162064
                   to: 24.0240001678467     [s; relative to TRIGTIME]
     T50: 9.50400006771088 +/- 2.92480701662574
        Measured from: 8.53600013256073
                   to: 18.0400002002716     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 11.9800000190735     
                   to: 12.9800000190735     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 1.4640000462532     
                   to: 25.7840000391006     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.724348   0.792881   0.459629   0.072033
           0.075309   0.078588   0.064851   0.053872 [error]
 Peak      0.060201   0.053488   0.030217   0.020686
           0.015248   0.017868   0.014779   0.011595 [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 2.38e-07 3.37e-07 3.55e-07 6.90e-07 1.15e-06 1.62e-06   erg/cm2
              Error 3.86e-08 3.71e-08 6.34e-08 2.47e-07 1.47e-07 3.12e-07   erg/cm2
Peak flux Power-law 5.75e-01 4.30e-01 2.15e-01 1.53e-01 1.29e+00 1.37e+00   ph/cm2/s
              Error 2.41e-01 1.38e-01 1.19e-01 1.83e-01 4.06e-01 4.46e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.24e-07 3.60e-07 3.55e-07 2.94e-07 1.10e-06 1.23e-06   erg/cm2
              Error 4.41e-08 5.05e-08 6.95e-08 4.40e-07 1.64e-07 4.43e-07   erg/cm2
Peak flux Cutoff-PL 5.74e-01 4.30e-01 2.15e-01 1.52e-01 1.29e+00 1.37e+00   ph/cm2/s
              Error 2.49e-01 1.78e-01 1.21e-01 1.82e-01 4.05e-01 4.54e-01   ph/cm2/s
 
Fluence        Band 2.22e-07 3.59e-07 3.53e-07 3.60e-07 1.09e-06 1.29e-06   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    1.926    0.203    -      -           5.13e-03 6.71e-04   42.960 57
CPL   1.385    0.847      50.3    0.0      1.03e-02 0.00e+00   41.690 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.003    0.632    -      -           8.60e-03 3.69e-03   53.710 57
CPL   2.014    2.332      48.7    0.0      8.46e-03 0.00e+00   53.710 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: 17.536000 sec.
T50 in the 50-300 keV band: 8.448000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   24.320    1.464   25.784
T90    20.160    3.864   24.024
T50     9.504    8.536   18.040
Peak    1.000   11.980   12.980

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  161.9674 -24.7716 0.0132   34.8  110.2       2.1205    14.5  TRIG_00672525       
------------------------------------------
 
Foreground time interval of the image:
  1.464  25.784 (delta_t =  24.320 [sec])
Background time interval of the image:
-239.400 -144.680 (delta_t =  94.720 [sec])
-143.400 -30.260 (delta_t = 113.140 [sec])
-29.400   1.464 (delta_t =  30.864 [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    1.464 sec. to   25.784 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.92618     ( -0.197452   0.207667 )
Norm@50keV  : 5.12571E-03    ( -0.000678233   0.000662861 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.96 using 59 PHA bins.
# Reduced chi-squared =         0.7536 for     57 degrees of freedom 
# Null hypothesis probability =   9.159286e-01
 
Photon flux (15-150 keV)    in 24.32 sec: 0.743906 ( -0.0826205  0.0826832 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.14649e-06 ( -1.46119e-07  1.4839e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.464 sec. to   25.784 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38493     ( -0.982381   0.71113 )
Epeak [keV] : 50.2590      (   )
Norm@50keV  : 1.02518E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.69 using 59 PHA bins.
# Reduced chi-squared =         0.7445 for     56 degrees of freedom 
# Null hypothesis probability =   9.226741e-01
 
Photon flux (15-150 keV)    in 24.32 sec: 0.728666 ( -0.085915  0.085667 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09562e-06 ( -1.61285e-07  1.66451e-07 ) ergs/cm2
 
Band function
Time interval is from    1.464 sec. to   25.784 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.37582   ( 1.37586   2.99525 )
beta        : -2.67884    ( 2.75778   12.3959 )
Epeak [keV] : 50.3520      ( -49.9214 -49.9214 )
Norm@50keV   : 1.03360E-02    ( -0.00577316   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.69 using 59 PHA bins.
# Reduced chi-squared =         0.7579 for     55 degrees of freedom 
# Null hypothesis probability =   9.073181e-01
 
Photon flux (15-150 keV)    in 24.32 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09387e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.8761  (-1.33627  1.54956)
R^2/D10^2   : 0.254494  (-0.101403   0.165019)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.40 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     57 degrees of freedom 
# Null hypothesis probability =   4.601771e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.526e-07   3.261e-08
25- 50  4.253e-07   6.275e-08
50-150  2.817e-07   7.633e-08
15-150  8.595e-07   1.142e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 78.2218       (-22.9961      41.2788)
Norm        : 3.51899       (-0.558281     0.695539)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.73 using 59 PHA bins.
# Reduced chi-squared =         0.7322 for     57 degrees of freedom 
# Null hypothesis probability =   9.355138e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.217e-07   3.508e-08
25- 50  3.630e-07   4.511e-08
50-150  5.047e-07   2.275e-07
15-150  1.089e-06   2.237e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.89030        (-3.76653      2.8226)
R1^2/D10^2  : 1.61794        (-1.12559      236.917)
kT2 [keV]   : 18.4644        (-16.3894      18.2136)
R2^2/D10^2  : 2.45589E-02    (-0.0224849   0.036475)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.39 using 59 PHA bins.
# Reduced chi-squared =         0.7889 for     55 degrees of freedom 
# Null hypothesis probability =   8.710133e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.170e-07   1.170e-07
25- 50  3.596e-07   1.881e-07
50-150  4.888e-07   2.735e-07
15-150  1.065e-06   5.512e-07

Peak spectrum fit

Power-law model
Time interval is from   11.980 sec. to   12.980 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.00290     ( -0.560101   0.704811 )
Norm@50keV  : 8.59718E-03    ( -0.00384627   0.00352652 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.71 using 59 PHA bins.
# Reduced chi-squared =         0.9423 for     57 degrees of freedom 
# Null hypothesis probability =   5.991430e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.29130 ( -0.405655  0.405699 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.92942e-08 ( -3.09747e-08  3.27966e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   11.980 sec. to   12.980 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01429     ( -3.59713   1.06696 )
Epeak [keV] : 48.7231      (   )
Norm@50keV  : 8.46317E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.71 using 59 PHA bins.
# Reduced chi-squared =         0.9592 for     56 degrees of freedom 
# Null hypothesis probability =   5.619103e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.29097 ( -0.405097  0.40505 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.92781e-08 ( -3.43246e-08  3.26149e-08 ) ergs/cm2
 
Band function
Time interval is from   11.980 sec. to   12.980 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.27014   ( 1.26326   1.26326 )
beta        : -2.07316    ( 2.08014   0.631048 )
Epeak [keV] : 27.3001      ( -26.007 -26.007 )
Norm@50keV   : 2.86647E-02    ( -0.0391889   2887.12 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.67 using 59 PHA bins.
# Reduced chi-squared =         0.9758 for     55 degrees of freedom 
# Null hypothesis probability =   5.255913e-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]    : 9.07771  (-3.34427  4.67939)
R^2/D10^2   : 0.888019  (-0.882373   4.18199)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.48 using 59 PHA bins.
# Reduced chi-squared =         0.9909 for     57 degrees of freedom 
# Null hypothesis probability =   4.944906e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.431e-08   8.800e-09
25- 50  3.082e-08   1.873e-08
50-150  1.207e-08   9.710e-09
15-150  5.721e-08   3.691e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 64.3261       (-39.455      -64.3261)
Norm        : 6.62657       (-2.64012     5.28051)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.91 using 59 PHA bins.
# Reduced chi-squared =         0.9458 for     57 degrees of freedom 
# Null hypothesis probability =   5.917530e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.683e-08   1.053e-08
25- 50  2.615e-08   1.610e-08
50-150  3.148e-08   2.701e-08
15-150  7.446e-08   5.154e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.26545        (-5.31525      -5.31525)
R1^2/D10^2  : 5.14242        (-4.97774      -4.97774)
kT2 [keV]   : 18.8338        (-19.5618      -19.5618)
R2^2/D10^2  : 3.59433E-02    (-0.0316181   1.16399)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.84 using 59 PHA bins.
# Reduced chi-squared =         0.9790 for     55 degrees of freedom 
# Null hypothesis probability =   5.188726e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.783e-08   1.069e-08
25- 50  2.335e-08   1.244e-08
50-150  3.186e-08   2.349e-08
15-150  7.304e-08   4.065e-08
Plot creation:
Wed Feb  3 21:58:57 EST 2016