batgrbproduct Analysis for Trigger=506291

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Oct 26 17:58:06 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger506291/GCN5_download_cron
======================================================================

  Trigger: 00506291      Segment: 000

  BAT Trigger Time: 341304456.512   [s; MET]
      Trigger Stop: 341304456.768   [s; MET]
               UTC: 2011-10-26T06:47:29.005720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 244.274664858183   Dec: -47.495033090842  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.37
     Image Trigger?:     NO
     Rate S/N Ratio:     13.0384048104053  [ if not an image trigger ]
     Image S/N Ratio:    8.37

  Flight Position:   [ source = BAT ]
    RA: 244.274664858183   Dec: -47.495033090842  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 244.256090631386   Dec: -47.4347390192992  [deg; J2000]  
        { 16h 17m 01.5s , -47d 26' 05.1" }
         +/- 1.84099386236947 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.820231077420185 [arcmin] (formal 1-sigma fit error)
    SNR: 12.7195626594846
 
  Angular difference between Flight and Ground position is 3.695266 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 3.62399995326996 +/- 1.10688933082492
        Measured from: 0.00400006771087646
                   to: 3.62800002098083     [s; relative to TRIGTIME]
     T50: 1.05999994277954 +/- 0.511613105668286
        Measured from: 0.412000119686127
                   to: 1.47200006246567     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0     
                   to: 1     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0920000076293945     
                   to: 4.07199996709824     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.090120   0.128141   0.064700   0.010739
           0.012969   0.012172   0.010155   0.008355 [error]
 Peak      0.040737   0.065734   0.030857   0.009975
           0.006629   0.006580   0.005404   0.004215 [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 2.75e-08 4.50e-08 5.57e-08 1.36e-07 1.67e-07 2.65e-07   erg/cm2
              Error 5.14e-09 5.38e-09 9.67e-09 4.92e-08 2.29e-08 5.79e-08   erg/cm2
Peak flux Power-law 3.85e-01 3.81e-01 2.65e-01 2.90e-01 1.15e+00 1.32e+00   ph/cm2/s
              Error 8.16e-02 5.11e-02 4.36e-02 9.63e-02 1.48e-01 1.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.59e-08 4.79e-08 5.58e-08 5.79e-08 1.58e-07 1.87e-07   erg/cm2
              Error 5.79e-09 7.12e-09 1.07e-08 8.75e-08 2.64e-08 8.57e-08   erg/cm2
Peak flux Cutoff-PL 3.61e-01 4.06e-01 2.70e-01 1.46e-01 1.12e+00 1.18e+00   ph/cm2/s
              Error 9.29e-02 7.12e-02 4.82e-02 1.69e-01 1.54e-01 2.37e-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    1.692    0.211    -      -           4.32e-03 5.59e-04   59.110 57
CPL   1.153    0.733      70.8  -23.6      8.53e-03 1.36e-02   57.850 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.527    0.217    -      -           9.11e-03 1.20e-03   64.120 57
CPL   0.991    1.054      85.3  -25.4      1.80e-02 4.56e-02   63.280 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: 1.024000 sec.
T50 in the 50-300 keV band: 0.640000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    4.164   -0.092    4.072
T90     3.624    0.004    3.628
T50     1.060    0.412    1.472
Peak    1.000    0.000    1.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  244.2561 -47.4347 0.0152   14.7 -149.8       0.2899    12.7  TRIG_00506291       
------------------------------------------
 
Foreground time interval of the image:
 -0.092   4.072 (delta_t =   4.164 [sec])
Background time interval of the image:
-239.512  -0.092 (delta_t = 239.420 [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   -0.092 sec. to    4.072 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.69225     ( -0.20879   0.213803 )
Norm@50keV  : 4.32113E-03    ( -0.000563415   0.000555098 )
------------------------------------------------------------
# Chi-Squared =          59.11 using 59 PHA bins.
# Reduced chi-squared =          1.037 for     57 degrees of freedom 
# Null hypothesis probability =   3.983119e-01
 
Photon flux (15-150 keV)    in 4.164 sec: 0.572349 ( -0.0685777  0.068661 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.66699e-07 ( -2.26539e-08  2.30536e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.092 sec. to    4.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.15269     ( -1.01973   0.446401 )
Epeak [keV] : 70.7842      ( -23.6006 -70.785 )
Norm@50keV  : 8.53079E-03    ( -0.00486315   0.0224086 )
------------------------------------------------------------
# Chi-Squared =          57.85 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     56 degrees of freedom 
# Null hypothesis probability =   4.068732e-01
 
Photon flux (15-150 keV)    in 4.164 sec: 0.558993 ( -0.035952  0.07151 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.57834e-07 ( -2.61349e-08  2.663e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.092 sec. to    4.072 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.15271   ( 1.21847   0.911163 )
beta        : -10.00000    ( 1.47175e+11   1.47175e+11 )
Epeak [keV] : 70.7713      ( -23.9072 -70.7713 )
Norm@50keV   : 8.52981E-03    ( -0.00434724   0.0223613 )
------------------------------------------------------------
# Chi-Squared =          57.85 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     55 degrees of freedom 
# Null hypothesis probability =   3.705762e-01
 
Photon flux (15-150 keV)    in 4.164 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]    : 11.8488  (-1.62471  1.99246)
R^2/D10^2   : 0.145366  (-0.0635919   0.106449)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          70.18 using 59 PHA bins.
# Reduced chi-squared =          1.231 for     57 degrees of freedom 
# Null hypothesis probability =   1.128013e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.795e-08   3.835e-09
25- 50  5.566e-08   9.875e-09
50-150  4.659e-08   1.481e-08
15-150  1.202e-07   2.074e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 123.570       (-23.6941      -100.392)
Norm        : 2.43589       (-0.345944     0.436708)
------------------------------------------------------------
# Chi-Squared =          57.87 using 59 PHA bins.
# Reduced chi-squared =          1.015 for     57 degrees of freedom 
# Null hypothesis probability =   4.429277e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.639e-08   4.331e-09
25- 50  4.744e-08   6.267e-09
50-150  8.588e-08   1.534e-08
15-150  1.597e-07   2.065e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.84428        (-2.40086      2.33856)
R1^2/D10^2  : 0.486925        (-0.275775      0.443779)
kT2 [keV]   : 28.7326        (-18.7205      58.3525)
R2^2/D10^2  : 3.93733E-03    (-0.0037481   0.0180645)
------------------------------------------------------------
# Chi-Squared =          56.69 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     55 degrees of freedom 
# Null hypothesis probability =   4.117234e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.440e-08   1.176e-08
25- 50  5.075e-08   2.238e-08
50-150  8.723e-08   4.740e-08
15-150  1.624e-07   7.338e-08

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to    1.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52677     ( -0.216449   0.217322 )
Norm@50keV  : 9.11320E-03    ( -0.00120372   0.00119422 )
------------------------------------------------------------
# Chi-Squared =          64.12 using 59 PHA bins.
# Reduced chi-squared =          1.125 for     57 degrees of freedom 
# Null hypothesis probability =   2.410697e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.14607 ( -0.147689  0.147899 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.60881e-08 ( -1.22871e-08  1.246e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.991362     ( -1.33078   0.777985 )
Epeak [keV] : 85.3385      ( -34.8078 -85.6763 )
Norm@50keV  : 1.79515E-02    ( -0.0097159   0.0814347 )
------------------------------------------------------------
# Chi-Squared =          63.28 using 59 PHA bins.
# Reduced chi-squared =          1.130 for     56 degrees of freedom 
# Null hypothesis probability =   2.350485e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.12385 ( -0.155182  0.15363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.1388e-08 ( -1.56884e-08  1.5109e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.565801   ( -2.55961   -0.59039 )
beta        : -1.99238    ( -0.769105   0.480091 )
Epeak [keV] : 45.6932      ( -20.8705 49.9242 )
Norm@50keV   : 0.167294    ( -0.190119   115.446 )
------------------------------------------------------------
# Chi-Squared =          59.90 using 59 PHA bins.
# Reduced chi-squared =          1.089 for     55 degrees of freedom 
# Null hypothesis probability =   3.026346e-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]    : 12.3904  (-1.65119  2.0627)
R^2/D10^2   : 0.259081  (-0.1121   0.179253)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          70.41 using 59 PHA bins.
# Reduced chi-squared =          1.235 for     57 degrees of freedom 
# Null hypothesis probability =   1.092151e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.430e-09   1.992e-09
25- 50  2.753e-08   5.165e-09
50-150  2.595e-08   7.395e-09
15-150  6.191e-08   1.042e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.361       (-95.3318      -199.648)
Norm        : 4.69209       (-0.592594     0.595191)
------------------------------------------------------------
# Chi-Squared =          63.35 using 59 PHA bins.
# Reduced chi-squared =          1.111 for     57 degrees of freedom 
# Null hypothesis probability =   2.622899e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.168e-08   6.260e-09
25- 50  2.248e-08   1.199e-08
50-150  4.929e-08   2.660e-08
15-150  8.345e-08   4.532e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.1623        (-1.65147      1.64224)
R1^2/D10^2  : 0.469548        (-0.205621      0.376437)
kT2 [keV]   : 199.059        (      )
R2^2/D10^2  : 1.32722E-04    (-5.10961e-05   0.00187963)
------------------------------------------------------------
# Chi-Squared =          55.60 using 59 PHA bins.
# Chi-Squared =          55.57 using 59 PHA bins.
# Reduced chi-squared =          1.011 for     55 degrees of freedom 
# Reduced chi-squared =          1.010 for     55 degrees of freedom 
# Null hypothesis probability =   4.519893e-01
# Null hypothesis probability =   4.533039e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.012e-08   3.035e-09
25- 50  2.665e-08   7.020e-09
50-150  4.871e-08   2.794e-08
15-150  8.549e-08   3.221e-08
Plot creation:
Wed Oct 26 18:13:38 EDT 2011