batgrbproduct Analysis for Trigger=598284

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed May  7 11:08:26 EDT 2014
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger598284/GCN5_download_cron
======================================================================

  Trigger: 00598284      Segment: 000

  BAT Trigger Time: 421103268.8   [s; MET]
      Trigger Stop: 421103269.824   [s; MET]
               UTC: 2014-05-06T21:07:36.822400    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 276.789901704877   Dec: -55.5621609300121  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.41
     Image Trigger?:     NO
     Rate S/N Ratio:     41.4487635521254  [ if not an image trigger ]
     Image S/N Ratio:    12.41

  Flight Position:   [ source = BAT ]
    RA: 276.789901704877   Dec: -55.5621609300121  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 276.806886282272   Dec: -55.5556086576067  [deg; J2000]  
        { 18h 27m 13.7s , -55d 33' 20.2" }
         +/- 1.59745804819567 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.614315285836002 [arcmin] (formal 1-sigma fit error)
    SNR: 15.5777547879453
 
  Angular difference between Flight and Ground position is 0.697662 arcmin
 
  Partial Coding Fraction: 0.1162109    [ including projection effects ]

  Duration
     T90: 111.099999964237 +/- 9.55670993835752
        Measured from: 0.100000083446503
                   to: 111.200000047684     [s; relative to TRIGTIME]
     T50: 60.3959999680519 +/- 6.52270984791344
        Measured from: 0.788000106811523
                   to: 61.1840000748634     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.00400000810623169     
                   to: 1.00400000810623     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.196000039577484     
                   to: 120.175999999046     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.096104   1.464419   1.218854   0.313766
           0.134684   0.129073   0.108593   0.090706 [error]
 Peak      0.261690   0.398934   0.444044   0.160206
           0.027743   0.032692   0.031642   0.022692 [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 4.54e-07 7.49e-07 9.37e-07 2.33e-06 2.79e-06 4.47e-06   erg/cm2
              Error 7.49e-08 7.41e-08 1.09e-07 5.92e-07 2.66e-07 6.66e-07   erg/cm2
Peak flux Power-law 3.25e+00 3.56e+00 2.77e+00 3.56e+00 1.09e+01 1.31e+01   ph/cm2/s
              Error 4.66e-01 3.24e-01 2.45e-01 6.26e-01 9.07e-01 1.04e+00   ph/cm2/s
 
Fluence   Cutoff-PL 4.42e-07 7.58e-07 9.50e-07 1.95e-06 2.78e-06 4.10e-06   erg/cm2
              Error 8.90e-08 8.28e-08 1.21e-07 1.01e-06 2.79e-07 1.05e-06   erg/cm2
Peak flux Cutoff-PL 2.66e+00 3.77e+00 3.10e+00 1.86e+00 1.06e+01 1.14e+01   ph/cm2/s
              Error 5.84e-01 3.73e-01 3.30e-01 8.21e-01 9.25e-01 1.24e+00   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 1.14e+01 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    1.676    0.163    -      -           2.50e-03 2.30e-04   46.580 57
CPL   1.545    0.480     186.2    0.0      2.89e-03 2.44e-03   46.450 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.358    0.125    -      -           9.04e-02 7.10e-03   61.810 57
CPL   0.529    0.603     100.4   55.0      2.17e-01 1.48e-01   55.120 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: 59.136000 sec.
T50 in the 50-300 keV band: 30.464000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  120.372   -0.196  120.176
T90   111.100    0.100  111.200
T50    60.396    0.788   61.184
Peak    1.000    0.004    1.004

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  276.8069 -55.5556 0.0123   51.1   14.2       2.5167    15.6  TRIG_00598284       
------------------------------------------
 
Foreground time interval of the image:
 -0.196  14.201 (delta_t =  14.397 [sec])
Background time interval of the image:
-239.800  -0.196 (delta_t = 239.604 [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   -0.196 sec. to  120.176 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.67628     ( -0.16236   0.164062 )
Norm@50keV  : 2.50117E-03    ( -0.000230093   0.000229508 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.58 using 59 PHA bins.
# Reduced chi-squared =         0.8172 for     57 degrees of freedom 
# Null hypothesis probability =   8.362188e-01
 
Photon flux (15-150 keV)    in 120.4 sec: 0.329478 ( -0.0326264  0.0328211 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.79376e-06 ( -2.65685e-07  2.66782e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.196 sec. to  120.176 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54538     ( -0.669368   0.290075 )
Epeak [keV] : 186.182      ( -186.14 -186.14 )
Norm@50keV  : 2.88850E-03    ( -0.00188707   0.00299747 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.45 using 59 PHA bins.
# Reduced chi-squared =         0.8294 for     56 degrees of freedom 
# Null hypothesis probability =   8.148136e-01
 
Photon flux (15-150 keV)    in 120.4 sec: 0.326919 ( -0.034589  0.03444 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.77711e-06 ( -2.80147e-07  2.76884e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.196 sec. to  120.176 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.53937   ( -0.156171   0.395599 )
beta        : -9.37102    ( 9.37165   19.3716 )
Epeak [keV] : 180.898      ( -101.188 -181.046 )
Norm@50keV   : 2.90655E-03    ( -0.000263337   0.000351658 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.45 using 59 PHA bins.
# Reduced chi-squared =         0.8445 for     55 degrees of freedom 
# Null hypothesis probability =   7.874260e-01
 
Photon flux (15-150 keV)    in 120.4 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]    : 15.6109  (-1.72734  1.96721)
R^2/D10^2   : 3.03504E-02  (-0.0106766   0.0162949)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.32 using 59 PHA bins.
# Reduced chi-squared =          1.392 for     57 degrees of freedom 
# Null hypothesis probability =   2.697562e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.851e-07   3.486e-08
25- 50  7.624e-07   1.032e-07
50-150  1.286e-06   2.245e-07
15-150  2.234e-06   2.787e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 160.897       (-53.0533      -160.808)
Norm        : 1.33789       (-0.143563     0.171297)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.98 using 59 PHA bins.
# Reduced chi-squared =         0.8243 for     57 degrees of freedom 
# Null hypothesis probability =   8.253388e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.111e-07   5.544e-08
25- 50  7.696e-07   1.834e-07
50-150  1.563e-06   8.292e-07
15-150  2.743e-06   8.833e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.41448        (-1.58925      2.17523)
R1^2/D10^2  : 0.950016        (-0.685259      2.32218)
kT2 [keV]   : 22.4630        (-3.94837      7.00528)
R2^2/D10^2  : 6.89838E-03    (-0.00443105   0.00540311)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.07 using 59 PHA bins.
# Reduced chi-squared =         0.8559 for     55 degrees of freedom 
# Null hypothesis probability =   7.676502e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.554e-07   2.272e-07
25- 50  7.106e-07   2.512e-07
50-150  1.568e-06   4.439e-07
15-150  2.734e-06   7.730e-07

Peak spectrum fit

Power-law model
Time interval is from    0.004 sec. to    1.004 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35834     ( -0.124873   0.1248 )
Norm@50keV  : 9.04234E-02    ( -0.00710123   0.0071011 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.81 using 59 PHA bins.
# Reduced chi-squared =          1.084 for     57 degrees of freedom 
# Null hypothesis probability =   3.083491e-01
 
Photon flux (15-150 keV)    in 1 sec: 10.9123 ( -0.905554  0.907637 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.81509e-07 ( -7.29558e-08  7.3067e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.004 sec. to    1.004 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.529125     ( -0.645918   0.560979 )
Epeak [keV] : 100.353      ( -21.8736 88.1098 )
Norm@50keV  : 0.216991    ( -0.0952718   0.200975 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.12 using 59 PHA bins.
# Reduced chi-squared =         0.9843 for     56 degrees of freedom 
# Null hypothesis probability =   5.081037e-01
 
Photon flux (15-150 keV)    in 1 sec: 10.6370 ( -0.92364  0.927 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.67105e-07 ( -7.5539e-08  7.5221e-08 ) ergs/cm2
 
Band function
Time interval is from    0.004 sec. to    1.004 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.533543   ( -0.483009   0.424002 )
beta        : -9.36654    ( 9.37088   19.3709 )
Epeak [keV] : 100.768      ( -16.2169 67.0792 )
Norm@50keV   : 0.215655    ( -0.0939443   0.0600703 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.12 using 59 PHA bins.
# Reduced chi-squared =          1.002 for     55 degrees of freedom 
# Null hypothesis probability =   4.700098e-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]    : 18.0895  (-1.50361  1.68255)
R^2/D10^2   : 0.714953  (-0.192087   0.252934)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.87 using 59 PHA bins.
# Reduced chi-squared =          1.296 for     57 degrees of freedom 
# Null hypothesis probability =   6.582247e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.677e-08   7.320e-09
25- 50  2.171e-07   2.430e-08
50-150  5.163e-07   6.845e-08
15-150  7.802e-07   7.290e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 46.1108       (-3.64051     3.64005)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.30 using 59 PHA bins.
# Reduced chi-squared =          1.163 for     57 degrees of freedom 
# Null hypothesis probability =   1.868193e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.148e-07   1.065e-08
25- 50  2.209e-07   2.530e-08
50-150  4.845e-07   1.849e-07
15-150  8.203e-07   1.708e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.09874        (-1.83295      7.81152)
R1^2/D10^2  : 23.1109        (-21.1048      81.5911)
kT2 [keV]   : 21.6499        (-2.7577      21.8894)
R2^2/D10^2  : 0.347297    (-0.325344   0.249675)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.72 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     55 degrees of freedom 
# Null hypothesis probability =   4.105735e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.109e-08   3.836e-08
25- 50  2.006e-07   4.865e-08
50-150  5.581e-07   1.062e-07
15-150  8.498e-07   1.548e-07
Plot creation:
Wed May  7 11:11:52 EDT 2014