batgrbproduct Analysis for Trigger=605612

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Jul 19 22:07:14 EDT 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/trigger605612
======================================================================

  Trigger: 00605612      Segment: 000

  BAT Trigger Time: 427442047.488   [s; MET]
      Trigger Stop: 427442048.512   [s; MET]
               UTC: 2014-07-19T05:53:55.204500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 171.592074083928   Dec: -50.1345189156071  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.92
     Image Trigger?:     NO
     Rate S/N Ratio:     7.14142842854285  [ if not an image trigger ]
     Image S/N Ratio:    6.92

  Flight Position:   [ source = BAT ]
    RA: 171.592074083928   Dec: -50.1345189156071  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 171.57124258296   Dec: -50.1153193404698  [deg; J2000]  
        { 11h 26m 17.1s , -50d 06' 55.1" }
         +/- 2.42349151941687 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.53918923445099 [arcmin] (formal 1-sigma fit error)
    SNR: 8.5884784635106
 
  Angular difference between Flight and Ground position is 1.403270 arcmin
 
  Partial Coding Fraction: 0.7578125    [ including projection effects ]

  Duration
     T90: 48 +/- 22.6274169979695
        Measured from: -31.4879999756813
                   to: 16.5120000243187     [s; relative to TRIGTIME]
     T50: 16 +/- 16
        Measured from: -15.4879999756813
                   to: 0.512000024318695     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.0120000243187     
                   to: 9.0120000243187     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -31.4879999756813     
                   to: 16.5120000243187     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.238728   0.314772   0.196743   0.036398
           0.043527   0.043318   0.038236   0.034547 [error]
 Peak      0.017079   0.002540   0.004581   0.001430
           0.006216   0.006279   0.005524   0.005292 [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 8.64e-08 1.25e-07 1.34e-07 2.69e-07 4.29e-07 6.15e-07   erg/cm2
              Error 1.96e-08 2.02e-08 3.55e-08 1.41e-07 8.33e-08 1.80e-07   erg/cm2
Peak flux Power-law 1.23e-01 5.23e-02 1.32e-02 4.07e-03 1.91e-01 1.94e-01   ph/cm2/s
              Error 9.40e-02 5.30e-02 2.58e-02 2.53e-02 1.45e-01 1.48e-01   ph/cm2/s
 
Fluence   Cutoff-PL 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux Cutoff-PL 1.78e-01 3.72e-02 9.49e-06 1.88e-15 2.15e-01 2.15e-01   ph/cm2/s
              Error 1.08e-01 3.73e-02 7.15e-03 0.00e+00 1.27e-01 1.27e-01   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.895    0.291    -      -           9.72e-04 1.90e-04   51.100 57
CPL   0.843    1.356      47.6  -14.7      3.80e-03 1.44e-02   48.750 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared 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    2.985    2.211    -      -           7.03e-04 1.00e-03   56.840 57
CPL  -9.984    0.979      20.2    4.9      2.49e+07 2.83e+08   54.010 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   48.000  -31.488   16.512
T90    48.000  -31.488   16.512
T50    16.000  -15.488    0.512
Peak    1.000    8.012    9.012

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  171.5712   -50.1153   0.0224    32.4546   -12.8879         0.7241110      8.588 TRIG_00605612                 
 
Foreground time interval of the image:
-31.488  11.213 (delta_t =  42.701 [sec])
Background time interval of the image:
-239.488 -31.488 (delta_t = 208.000 [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  -31.488 sec. to   16.512 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.89505     ( -0.27924   0.301785 )
Norm@50keV  : 9.71748E-04    ( -0.00019316   0.000187543 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.10 using 59 PHA bins.
# Reduced chi-squared =         0.8965 for     57 degrees of freedom 
# Null hypothesis probability =   6.949758e-01
 
Photon flux (15-150 keV)    in 48 sec: 0.139164 ( -0.022518  0.0225236 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.28822e-07 ( -8.20258e-08  8.45227e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -31.488 sec. to   16.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.843370     ( -1.55527   1.15726 )
Epeak [keV] : 47.6396      ( -18.1728 -47.6396 )
Norm@50keV  : 3.79885E-03    ( -0.00379886   0.0250415 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.75 using 59 PHA bins.
# Reduced chi-squared =         0.8706 for     56 degrees of freedom 
# Null hypothesis probability =   7.431854e-01
 
Photon flux (15-150 keV)    in 48 sec: 0.134509 ( -0.022341  0.023053 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from  -31.488 sec. to   16.512 sec.
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.0971  (-1.98388  2.36679)
R^2/D10^2   : 4.53384E-02  (-0.0233502   0.0491099)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.21 using 59 PHA bins.
# Reduced chi-squared =         0.9511 for     57 degrees of freedom 
# Null hypothesis probability =   5.803208e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.609e-08   1.648e-08
25- 50  1.604e-07   4.085e-08
50-150  1.123e-07   4.421e-08
15-150  3.288e-07   8.938e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 78.1853       (-30.3484      71.0017)
Norm        : 0.664973       (-0.142896     0.184538)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.13 using 59 PHA bins.
# Reduced chi-squared =         0.8620 for     57 degrees of freedom 
# Null hypothesis probability =   7.612772e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.269e-08   1.838e-08
25- 50  1.354e-07   2.957e-08
50-150  1.881e-07   1.233e-07
15-150  4.062e-07   1.413e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.27475        (-3.45793      3.9511)
R1^2/D10^2  : 0.393233        (-0.325703      94.935)
kT2 [keV]   : 16.0388        (-4.88868      15.3334)
R2^2/D10^2  : 8.73331E-03    (-0.0079467   0.0324146)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.47 using 59 PHA bins.
# Reduced chi-squared =         0.8813 for     55 degrees of freedom 
# Null hypothesis probability =   7.206978e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.887e-08   4.344e-08
25- 50  1.360e-07   6.780e-08
50-150  1.713e-07   1.059e-07
15-150  3.862e-07   1.960e-07

Peak spectrum fit

Power-law model
Time interval is from    8.012 sec. to    9.012 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.98467     ( -1.58447   2.83764 )
Norm@50keV  : 7.03170E-04    ( -0.000701459   0.00129849 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.84 using 59 PHA bins.
# Reduced chi-squared =         0.9973 for     57 degrees of freedom 
# Null hypothesis probability =   4.808983e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.191127 ( -0.142113  0.147898 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.37432e-09 ( -8.37432e-09  1.00723e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    8.012 sec. to    9.012 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.98365     ( 9.99531   11.954 )
Epeak [keV] : 20.2223      ( -4.51697 5.25747 )
Norm@50keV  : 2.48571E+07    ( -2.60466e+07   5.39846e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.01 using 59 PHA bins.
# Reduced chi-squared =         0.9644 for     56 degrees of freedom 
# Null hypothesis probability =   5.506177e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.214786 ( -0.126433  0.126732 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.13396e-09 ( -4.24964e-09  4.58524e-09 ) ergs/cm2
 
Band function
Time interval is from    8.012 sec. to    9.012 sec.
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 4.37836  (-1.85528  3.90866)
R^2/D10^2   : 3.33135  (-3.28364   45.0813)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.62 using 59 PHA bins.
# Reduced chi-squared =         0.9758 for     57 degrees of freedom 
# Null hypothesis probability =   5.269732e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.617e-09   2.790e-09
25- 50  2.141e-09   1.512e-09
50-150  4.385e-11   6.665e-11
15-150  6.802e-09   5.010e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 13.3847       (-13.4661      157.569)
Norm        : 3.93746       (-3.89884     2.72867)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.40 using 59 PHA bins.
# Reduced chi-squared =         0.9894 for     57 degrees of freedom 
# Null hypothesis probability =   4.977274e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.121e-09   2.716e-09
25- 50  2.516e-09   1.782e-09
50-150  3.517e-10   3.999e-10
15-150  6.989e-09   4.738e-09
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.34668        (-1.83155      3.92962)
R1^2/D10^2  : 3.41021        (-3.04707      45.1661)
kT2 [keV]   : 27.6999        (      )
R2^2/D10^2  : 2.89593E-04    (-0.000309393   0.0252846)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.62 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.59 using 59 PHA bins.
# Reduced chi-squared =          1.011 for     55 degrees of freedom 
# Reduced chi-squared =          1.011 for     55 degrees of freedom 
# Null hypothesis probability =   4.512980e-01
# Null hypothesis probability =   4.525769e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00
Plot creation:
Sat Jul 19 22:12:44 EDT 2014