batgrbproduct Analysis for Trigger=593744

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Apr  3 10:09:01 EDT 2014
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger593744/batgroup_hand_proc
======================================================================

  Trigger: 00593744      Segment: 000

  BAT Trigger Time: 417799136   [s; MET]
      Trigger Stop: 417799200   [s; MET]
               UTC: 2014-03-29T15:18:44.179720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 24.7638912239798   Dec: -17.9613528389166  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.28
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.28

  Flight Position:   [ source = BAT ]
    RA: 24.7638912239798   Dec: -17.9613528389166  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 24.8144827059056   Dec: -17.9717803981577  [deg; J2000]  
        { 01h 39m 15.5s , -17d 58' 18.4" }
         +/- 3.17204616431427 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.37657784973292 [arcmin] (formal 1-sigma fit error)
    SNR: 5.84681153949899
 
  Angular difference between Flight and Ground position is 2.954474 arcmin
 
  Partial Coding Fraction: 0.5    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.409406   0.184844   0.019366   0.020621
           0.060438   0.060422   0.057298   0.059268 [error]
 Peak      0.409406   0.184844   0.019366   0.020621
           0.060438   0.060422   0.057298   0.059268 [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 1.34e-07 7.68e-08 2.78e-08 1.33e-08 2.46e-07 2.52e-07   erg/cm2
              Error 3.05e-08 3.38e-08 2.64e-08 2.61e-08 8.02e-08 9.19e-08   erg/cm2
Peak flux Power-law 7.05e-02 2.29e-02 4.14e-03 8.73e-04 9.81e-02 9.84e-02   ph/cm2/s
              Error 1.63e-02 9.55e-03 3.80e-03 1.60e-03 2.32e-02 2.35e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.39e-07 7.39e-08 8.74e-09 1.41e-10 2.26e-07 2.22e-07   erg/cm2
              Error 3.33e-08 4.74e-08 2.86e-08 2.25e-08 8.31e-08 9.26e-08   erg/cm2
Peak flux Cutoff-PL 7.23e-02 2.26e-02 1.43e-03 1.23e-05 9.63e-02 9.63e-02   ph/cm2/s
              Error 1.74e-02 1.13e-02 3.88e-03 5.66e-04 2.27e-02 2.30e-02   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    3.466    0.789    -      -           2.49e-04 1.78e-04   42.370 57
CPL   1.484    0.000       6.3    0.0      8.51e-03 0.00e+00   41.990 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    3.466    0.789    -      -           2.49e-04 1.78e-04   42.370 57
CPL   1.484    0.000       6.3    0.0      8.51e-03 0.00e+00   41.990 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   24.8145   -17.9718   0.0329    29.6379  -115.4306         0.7215780      5.847 TRIG_00593744                 
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [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
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.46595     ( -0.680084   0.898644 )
Norm@50keV  : 2.49253E-04    ( -0.000150515   0.00020564 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.37 using 59 PHA bins.
# Reduced chi-squared =         0.7433 for     57 degrees of freedom 
# Null hypothesis probability =   9.258325e-01
 
Photon flux (15-150 keV)    in 64 sec: 9.80691E-02 ( -0.0230884  0.0233346 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.45875e-07 ( -7.36781e-08  8.67923e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48354     (     )
Epeak [keV] : 6.30510      (   )
Norm@50keV  : 8.50639E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.99 using 59 PHA bins.
# Reduced chi-squared =         0.7498 for     56 degrees of freedom 
# Null hypothesis probability =   9.176845e-01
 
Photon flux (15-150 keV)    in 64 sec: 9.62925E-02 ( -0.0221177  0.0232355 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.25721e-07 ( -6.60794e-08  1.00211e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.45056   ( 5.76249   6.45056 )
beta        : -3.46602    ( -0.89668   0.680334 )
Epeak [keV] : 35.6789      ( -35.6789 -35.6789 )
Norm@50keV   : 3.38750E-02    ( -0.020456   0.0279505 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.37 using 59 PHA bins.
# Reduced chi-squared =         0.7703 for     55 degrees of freedom 
# Null hypothesis probability =   8.937428e-01
 
Photon flux (15-150 keV)    in 64 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]    : 4.24866  (-0.980911  1.21946)
R^2/D10^2   : 1.85084  (-1.85108   5.46884)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.85 using 59 PHA bins.
# Reduced chi-squared =         0.7518 for     57 degrees of freedom 
# Null hypothesis probability =   9.177806e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.432e-07   8.310e-08
25- 50  6.121e-08   3.878e-08
50-150  1.059e-09   1.062e-09
15-150  2.055e-07   1.195e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 11.7204       (-4.39182      7.96752)
Norm        : 2.50174       (-1.30046     3.82417)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.99 using 59 PHA bins.
# Reduced chi-squared =         0.7367 for     57 degrees of freedom 
# Null hypothesis probability =   9.316673e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.393e-07   7.079e-08
25- 50  7.325e-08   4.021e-08
50-150  7.546e-09   7.119e-09
15-150  2.201e-07   1.139e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.77008        (-2.72744      -2.72744)
R1^2/D10^2  : 10.1965        (-11.7339      -11.7339)
kT2 [keV]   : 6.10626        (-5.96391      -5.96391)
R2^2/D10^2  : 0.200418    (-0.245122   5.23264)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.92 using 59 PHA bins.
# Reduced chi-squared =         0.7622 for     55 degrees of freedom 
# Null hypothesis probability =   9.027912e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.382e-07   6.595e-08
25- 50  7.547e-08   4.208e-08
50-150  6.643e-09   5.120e-09
15-150  2.203e-07   1.092e-07

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.46595     ( -0.680084   0.898644 )
Norm@50keV  : 2.49253E-04    ( -0.000150515   0.00020564 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.37 using 59 PHA bins.
# Reduced chi-squared =         0.7433 for     57 degrees of freedom 
# Null hypothesis probability =   9.258325e-01
 
Photon flux (15-150 keV)    in 64 sec: 9.80691E-02 ( -0.0230884  0.0233346 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.45875e-07 ( -7.36781e-08  8.67923e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48354     (     )
Epeak [keV] : 6.30510      (   )
Norm@50keV  : 8.50639E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.99 using 59 PHA bins.
# Reduced chi-squared =         0.7498 for     56 degrees of freedom 
# Null hypothesis probability =   9.176845e-01
 
Photon flux (15-150 keV)    in 64 sec: 9.62925E-02 ( -0.0221177  0.0232355 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.25721e-07 ( -6.60794e-08  1.00211e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.45056   ( 5.76249   6.45056 )
beta        : -3.46602    ( -0.89668   0.680334 )
Epeak [keV] : 35.6789      ( -35.6789 -35.6789 )
Norm@50keV   : 3.38750E-02    ( -0.020456   0.0279505 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.37 using 59 PHA bins.
# Reduced chi-squared =         0.7703 for     55 degrees of freedom 
# Null hypothesis probability =   8.937428e-01
 
Photon flux (15-150 keV)    in 64 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]    : 4.24866  (-0.980911  1.21946)
R^2/D10^2   : 1.85084  (-1.85108   5.46884)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.85 using 59 PHA bins.
# Reduced chi-squared =         0.7518 for     57 degrees of freedom 
# Null hypothesis probability =   9.177806e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.432e-07   7.987e-08
25- 50  6.121e-08   3.872e-08
50-150  1.059e-09   1.055e-09
15-150  2.055e-07   1.186e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 11.7204       (-4.39182      7.96752)
Norm        : 2.50174       (-1.30046     3.82417)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.99 using 59 PHA bins.
# Reduced chi-squared =         0.7367 for     57 degrees of freedom 
# Null hypothesis probability =   9.316673e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.393e-07   6.611e-08
25- 50  7.325e-08   4.304e-08
50-150  7.546e-09   7.112e-09
15-150  2.201e-07   1.133e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.77008        (-2.72744      -2.72744)
R1^2/D10^2  : 10.1965        (-11.7339      -11.7339)
kT2 [keV]   : 6.10626        (-5.96391      -5.96391)
R2^2/D10^2  : 0.200418    (-0.245122   5.23264)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.92 using 59 PHA bins.
# Reduced chi-squared =         0.7622 for     55 degrees of freedom 
# Null hypothesis probability =   9.027912e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.382e-07   6.544e-08
25- 50  7.547e-08   3.936e-08
50-150  6.643e-09   4.966e-09
15-150  2.203e-07   1.189e-07
Plot creation:
Thu Apr  3 10:37:42 EDT 2014