batgrbproduct Analysis for Trigger=532871

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Sep  7 19:59:04 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger532871/GCN5_download_cron
======================================================================

  Trigger: 00532871      Segment: 000

  BAT Trigger Time: 368670272.704   [s; MET]
      Trigger Stop: 368670273.728   [s; MET]
               UTC: 2012-09-07T00:24:23.082500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 74.741267312283   Dec: -9.31372697920963  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.33
     Image Trigger?:     NO
     Rate S/N Ratio:     15.4919333848297  [ if not an image trigger ]
     Image S/N Ratio:    11.33

  Flight Position:   [ source = BAT ]
    RA: 74.741267312283   Dec: -9.31372697920963  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 74.7452420951207   Dec: -9.31871232964096  [deg; J2000]  
        { 04h 58m 58.9s , -09d 19' 07.4" }
         +/- 1.84514969414642 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.715006626977863 [arcmin] (formal 1-sigma fit error)
    SNR: 12.6786563079401
 
  Angular difference between Flight and Ground position is 0.380603 arcmin
 
  Partial Coding Fraction: 0.2128906    [ including projection effects ]

  Duration
     T90: 6.99200004339218 +/- 1.37043061304617
        Measured from: 0.120000123977661
                   to: 7.11200016736984     [s; relative to TRIGTIME]
     T50: 3.18400001525879 +/- 1.36526042789653
        Measured from: 0.744000136852264
                   to: 3.92800015211105     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.107999980449677     
                   to: 1.10799998044968     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0239999890327454     
                   to: 8.13599997758865     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.261330   0.411893   0.235009   0.075536
           0.034977   0.037018   0.033906   0.032149 [error]
 Peak      0.079522   0.129865   0.102482   0.043445
           0.013792   0.015060   0.013887   0.011780 [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 9.60e-08 1.62e-07 2.08e-07 5.35e-07 6.13e-07 1.00e-06   erg/cm2
              Error 1.63e-08 1.79e-08 3.26e-08 1.72e-07 7.80e-08 2.02e-07   erg/cm2
Peak flux Power-law 8.70e-01 9.36e-01 7.15e-01 8.92e-01 2.86e+00 3.41e+00   ph/cm2/s
              Error 1.98e-01 1.32e-01 1.09e-01 2.80e-01 3.71e-01 4.39e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.99e-08 2.03e-07 2.33e-07 1.33e-07 6.37e-07 0.00e+00   erg/cm2
              Error 2.09e-08 2.61e-08 4.22e-08 1.68e-07 1.01e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 8.73e-01 9.37e-01 7.15e-01 8.85e-01 2.86e+00 3.40e+00   ph/cm2/s
              Error 2.02e-01 1.43e-01 1.18e-01 4.08e-01 3.71e-01 4.38e-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    1.641    0.187    -      -           8.07e-03 9.59e-04   69.200 57
CPL   0.566    1.093      59.5   48.8      3.15e-02 7.97e-02   65.090 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.389    0.216    -      -           2.35e-02 2.98e-03   61.140 57
CPL   1.385    1.223    9732.3    0.0      2.36e-02 2.75e-02   61.140 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: 0.576000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    8.160   -0.024    8.136
T90     6.992    0.120    7.112
T50     3.184    0.744    3.928
Peak    1.000    0.108    1.108

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   74.7452  -9.3187 0.0152   37.6  -70.5       1.0045    12.7  TRIG_00532871       
------------------------------------------
 
Foreground time interval of the image:
 -0.024   8.136 (delta_t =   8.160 [sec])
Background time interval of the image:
-239.704  -0.024 (delta_t = 239.680 [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   -0.024 sec. to    8.136 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64146     ( -0.185053   0.18977 )
Norm@50keV  : 8.07113E-03    ( -0.000964445   0.000953057 )
------------------------------------------------------------
# Chi-Squared =          69.20 using 59 PHA bins.
# Reduced chi-squared =          1.214 for     57 degrees of freedom 
# Null hypothesis probability =   1.289027e-01
 
Photon flux (15-150 keV)    in 8.16 sec: 1.05094 ( -0.116238  0.116324 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.1306e-07 ( -7.74617e-08  7.86298e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.024 sec. to    8.136 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.565792     ( -1.26523   0.92126 )
Epeak [keV] : 59.4936      ( -12.9693 84.5356 )
Norm@50keV  : 3.15168E-02    ( -0.0315755   0.127822 )
------------------------------------------------------------
# Chi-Squared =          65.09 using 59 PHA bins.
# Reduced chi-squared =          1.162 for     56 degrees of freedom 
# Null hypothesis probability =   1.896917e-01
 
Photon flux (15-150 keV)    in 8.16 sec: 1.00863 ( -0.123313  0.12246 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.36553e-07 ( -9.97013e-08  1.01903e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.024 sec. to    8.136 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.14302E-02   ( -1.26115   -0.0937468 )
beta        : -2.34444    ( 2.3562   0.620144 )
Epeak [keV] : 49.7347      ( -19.4766 27.4978 )
Norm@50keV   : 7.43084E-02    ( -0.0825071   118.104 )
------------------------------------------------------------
# Chi-Squared =          63.27 using 59 PHA bins.
# Reduced chi-squared =          1.150 for     55 degrees of freedom 
# Null hypothesis probability =   2.074601e-01
 
Photon flux (15-150 keV)    in 8.16 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]    : 12.2186  (-1.36354  1.58315)
R^2/D10^2   : 0.249407  (-0.0902772   0.13545)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          71.32 using 59 PHA bins.
# Reduced chi-squared =          1.251 for     57 degrees of freedom 
# Null hypothesis probability =   9.602889e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.435e-08   1.245e-08
25- 50  2.068e-07   2.974e-08
50-150  1.879e-07   4.415e-08
15-150  4.590e-07   6.499e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 132.839       (-14.7278      -100.652)
Norm        : 4.44143       (-0.55598     0.669674)
------------------------------------------------------------
# Chi-Squared =          66.56 using 59 PHA bins.
# Reduced chi-squared =          1.168 for     57 degrees of freedom 
# Null hypothesis probability =   1.811423e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.391e-08   1.442e-08
25- 50  1.709e-07   2.011e-08
50-150  3.200e-07   5.557e-08
15-150  5.848e-07   6.679e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.92097        (-2.34531      2.00155)
R1^2/D10^2  : 0.448240        (-0.185753      0.398137)
kT2 [keV]   : 45.5416        (-35.7651      -56.5086)
R2^2/D10^2  : 1.31204E-03    (-0.000758932   0.0206508)
------------------------------------------------------------
# Chi-Squared =          62.39 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     55 degrees of freedom 
# Null hypothesis probability =   2.300666e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.572e-08   2.648e-08
25- 50  1.982e-07   7.770e-08
50-150  2.960e-07   1.542e-07
15-150  5.699e-07   2.333e-07

Peak spectrum fit

Power-law model
Time interval is from    0.108 sec. to    1.108 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38853     ( -0.216159   0.21595 )
Norm@50keV  : 2.35358E-02    ( -0.0029803   0.00297471 )
------------------------------------------------------------
# Chi-Squared =          61.14 using 59 PHA bins.
# Reduced chi-squared =          1.073 for     57 degrees of freedom 
# Null hypothesis probability =   3.297607e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.85885 ( -0.371049  0.371904 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.27957e-07 ( -3.15536e-08  3.17624e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.108 sec. to    1.108 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38542     ( -0.844521   1.60204 )
Epeak [keV] : 9732.27      ( -1021.78 -1021.78 )
Norm@50keV  : 2.36252E-02    ( -0.0178948   0.0371436 )
------------------------------------------------------------
# Chi-Squared =          61.14 using 59 PHA bins.
# Reduced chi-squared =          1.092 for     56 degrees of freedom 
# Null hypothesis probability =   2.967096e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.86014 ( -0.3723  0.36943 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.30784e-07 ( -1.84551e-07  1.0755e-07 ) ergs/cm2
 
Band function
Time interval is from    0.108 sec. to    1.108 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.101063   ( 0.562654   0.562654 )
beta        : -1.49251    ( 1.4711   0.276658 )
Epeak [keV] : 44.2928      ( -44.2788 92.6059 )
Norm@50keV   : 0.225723    ( -0.23243   738.07 )
------------------------------------------------------------
# Chi-Squared =          60.46 using 59 PHA bins.
# Reduced chi-squared =          1.099 for     55 degrees of freedom 
# Null hypothesis probability =   2.852009e-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]    : 15.7716  (-2.68032  3.4271)
R^2/D10^2   : 0.277811  (-0.136161   0.2531)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          80.20 using 59 PHA bins.
# Reduced chi-squared =          1.407 for     57 degrees of freedom 
# Null hypothesis probability =   2.310544e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.433e-08   3.933e-09
25- 50  5.957e-08   1.173e-08
50-150  1.030e-07   2.643e-08
15-150  1.769e-07   3.355e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.997       (      )
Norm        : 11.8595       (-11.8595     -11.8595)
------------------------------------------------------------
# Chi-Squared =          63.15 using 59 PHA bins.
# Reduced chi-squared =          1.108 for     57 degrees of freedom 
# Null hypothesis probability =   2.682690e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.953e-08   1.588e-08
25- 50  5.681e-08   3.068e-08
50-150  1.246e-07   6.740e-08
15-150  2.109e-07   1.145e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.95279        (-2.39381      2.71992)
R1^2/D10^2  : 1.46876        (-0.837617      1.51543)
kT2 [keV]   : 46.0944        (-19.7942      -46.3662)
R2^2/D10^2  : 6.45013E-03    (-0.00594246   0.0163542)
------------------------------------------------------------
# Chi-Squared =          59.12 using 59 PHA bins.
# Reduced chi-squared =          1.075 for     55 degrees of freedom 
# Null hypothesis probability =   3.275143e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.445e-08   1.177e-08
25- 50  5.947e-08   2.914e-08
50-150  1.450e-07   7.783e-08
15-150  2.290e-07   1.053e-07
Plot creation:
Fri Sep  7 20:21:43 EDT 2012