batgrbproduct Analysis for Trigger=326115

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Thu Aug  6 16:24:34 EDT 2009
             Host Name: gcn14
   Current Working Dir: /net/raid16/BAT_GRB_process_2009/326115
======================================================================

  Trigger: 00326115      Segment: 000

  BAT Trigger Time: 244306896   [s; MET]
      Trigger Stop: 244307008   [s; MET]
               UTC: 2008-09-28T15:01:32.866720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 95.0835644412627   Dec: -55.1733396233429  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.92
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.92

  Flight Position:   [ source = BAT ]
    RA: 95.0835644412627   Dec: -55.1733396233429  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 95.0586102305356   Dec: -55.1721838674195  [deg; J2000]  
        { 06h 20m 14.1s , -55d 10' 19.9" }
         +/- 2.22363616433062 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.0880958083294 [arcmin] (formal 1-sigma fit error)
    SNR: 9.71209794157162
 
  Angular difference between Flight and Ground position is 0.857894 arcmin
 
  Partial Coding Fraction: 0.84375    [ including projection effects ]

  Duration
     T90: 233.655999988317 +/- 20.8004346174656
        Measured from: 64.4600000083447
                   to: 298.115999996662     [s; relative to TRIGTIME]
     T50: 44.8199999928474 +/- 57.5655403915662
        Measured from: 180.976000010967
                   to: 225.796000003815     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 202.82800000906     
                   to: 203.82800000906     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 51.2919999957085     
                   to: 318.939999997616     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.478144   1.639722   1.049559   0.301031
           0.079465   0.082424   0.073738   0.067923 [error]
 Peak      0.071823   0.101017   0.074604   0.016848
           0.005805   0.006140   0.005662   0.004525 [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 4.19e-07 6.73e-07 8.16e-07 1.94e-06 2.46e-06 3.85e-06   erg/cm2
              Error 4.14e-08 3.95e-08 7.38e-08 3.76e-07 1.68e-07 4.36e-07   erg/cm2
Peak flux Power-law 6.94e-01 7.02e-01 4.99e-01 5.65e-01 2.12e+00 2.46e+00   ph/cm2/s
              Error 7.24e-02 4.68e-02 4.56e-02 1.03e-01 1.38e-01 1.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.20e-07 6.74e-07 8.15e-07 1.92e-06 2.46e-06 3.82e-06   erg/cm2
              Error 4.14e-08 3.94e-08 7.37e-08 5.70e-07 1.68e-07 6.09e-07   erg/cm2
Peak flux Cutoff-PL 6.71e-01 7.22e-01 5.07e-01 4.12e-01 2.10e+00 2.31e+00   ph/cm2/s
              Error 8.25e-02 5.83e-02 4.88e-02 1.41e-01 2.54e-01 0.00e+00   ph/cm2/s
 
Fluence        Band 4.09e-07 6.65e-07 7.97e-07 1.86e-06 2.41e-06 3.74e-06   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 6.64e-01 7.16e-01 4.91e-01 4.73e-01 2.07e+00 2.38e+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    1.723    0.115    -      -           9.99e-04 6.44e-05   56.400 57
CPL   1.727    0.116    9999.4    0.0      9.98e-04 0.00e+00   56.420 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.491    0.114    -      -           1.70e-02 1.20e-03   59.500 57
CPL   1.252    0.378     148.6    0.0      2.28e-02 0.00e+00   58.540 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: 21.952000 sec.
T50 in the 50-300 keV band: 10.496000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  267.648   51.292  318.940
T90   233.656   64.460  298.116
T50    44.820  180.976  225.796
Peak    1.000  202.828  203.828

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   95.0586 -55.1722 0.0199   13.9   96.2       0.8770     9.7  TRIG_00326115       
------------------------------------------
 
Foreground time interval of the image:
 51.292  81.080 (delta_t =  29.788 [sec])
 82.000 121.301 (delta_t =  39.301 [sec])
Background time interval of the image:
-239.000  51.292 (delta_t = 290.292 [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
Multiple GTIs in the spectrum
tstart tstop
51.292000 81.080000
82.000000 318.940000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72251     ( -0.114499   0.116181 )
Norm@50keV  : 9.99479E-04    ( -6.47474e-05   6.40567e-05 )
------------------------------------------------------------
# Chi-Squared =          56.40 using 59 PHA bins.
# Reduced chi-squared =         0.9895 for     57 degrees of freedom 
# Null hypothesis probability =   4.974547e-01
 
Photon flux (15-150 keV)    in 266.7 sec: 0.133803 ( -0.00790688  0.00792112 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.46393e-06 ( -1.67345e-07  1.69196e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
51.292000 81.080000
82.000000 318.940000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72664     ( -0.118996   0.113233 )
Epeak [keV] : 9999.36      (   )
Norm@50keV  : 9.98012E-04    (     )
------------------------------------------------------------
# Chi-Squared =          56.42 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     56 degrees of freedom 
# Null hypothesis probability =   4.593085e-01
 
Photon flux (15-150 keV)    in 266.7 sec: 0.133744 ( -0.007892  0.007749 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.45982e-06 ( -1.63351e-07  1.73243e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
51.292000 81.080000
82.000000 318.940000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.58824   ( 1.42688   1.42688 )
beta        : -1.73339    ( 1.72348   0.115266 )
Epeak [keV] : 102.321      ( -36.9096 -36.9096 )
Norm@50keV   : 1.21552E-03    ( -0.000278742   0.00988151 )
------------------------------------------------------------
# Chi-Squared =          56.38 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     55 degrees of freedom 
# Null hypothesis probability =   4.229317e-01
 
Photon flux (15-150 keV)    in 266.7 sec: 0.131913 ( -0.008744  0.007697 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.41386e-06 ( -1.60849e-07  9.53773e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.8429  (  )
R^2/D10^2   : 3.21235E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         143.29 using 59 PHA bins.
# Reduced chi-squared =         2.5138 for     57 degrees of freedom 
# Null hypothesis probability =   2.234275e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.538e-07   2.687e-08
25- 50  7.865e-07   5.761e-08
50-150  6.574e-07   9.495e-08
15-150  1.698e-06   1.232e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 129.833       (-3.49111      81.9026)
Norm        : 0.555782       (-0.0411627     0.0485247)
------------------------------------------------------------
# Chi-Squared =          61.62 using 59 PHA bins.
# Reduced chi-squared =          1.081 for     57 degrees of freedom 
# Null hypothesis probability =   3.143205e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.846e-07   3.267e-08
25- 50  6.972e-07   4.387e-08
50-150  1.292e-06   1.740e-07
15-150  2.374e-06   1.927e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.92391        (-1.01781      1.07098)
R1^2/D10^2  : 0.178470        (-0.0700929      0.137294)
kT2 [keV]   : 30.9261        (-7.06199      13.6048)
R2^2/D10^2  : 8.34368E-04    (-0.000548301   0.00116673)
------------------------------------------------------------
# Chi-Squared =          57.16 using 59 PHA bins.
# Reduced chi-squared =          1.039 for     55 degrees of freedom 
# Null hypothesis probability =   3.947147e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.951e-07   7.294e-08
25- 50  6.899e-07   1.095e-07
50-150  1.439e-06   6.217e-07
15-150  2.524e-06   7.100e-07

Peak spectrum fit

Power-law model
Time interval is from  202.828 sec. to  203.828 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49148     ( -0.112815   0.114485 )
Norm@50keV  : 1.69918E-02    ( -0.00120241   0.00119219 )
------------------------------------------------------------
# Chi-Squared =          59.50 using 59 PHA bins.
# Reduced chi-squared =          1.044 for     57 degrees of freedom 
# Null hypothesis probability =   3.847212e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.11642 ( -0.13783  0.137835 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.6142e-07 ( -1.27901e-08  1.29144e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  202.828 sec. to  203.828 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25206     ( -0.457029   0.298696 )
Epeak [keV] : 148.578      (   )
Norm@50keV  : 2.27974E-02    (     )
------------------------------------------------------------
# Chi-Squared =          58.54 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     56 degrees of freedom 
# Null hypothesis probability =   3.821970e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.09901 ( -0.14136  0.14099 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.55012e-07 ( 1.3889e-08  -1.55012e-07 ) ergs/cm2
 
Band function
Time interval is from  202.828 sec. to  203.828 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.25194   ( 1.16768   1.16768 )
beta        : -4.78373    ( 8.98965   18.9659 )
Epeak [keV] : 148.584      ( -50.669 480.647 )
Norm@50keV   : 2.27967E-02    ( -0.00524294   0.00620515 )
------------------------------------------------------------
# Chi-Squared =          58.54 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     55 degrees of freedom 
# Null hypothesis probability =   3.466912e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.06685 ( -0.13639  0.13958 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.54913e-07 ( -1.3968e-08  1.3921e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.8655  (-1.18161  1.30924)
R^2/D10^2   : 0.317216  (-0.0855336   0.115364)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         113.28 using 59 PHA bins.
# Reduced chi-squared =         1.9874 for     57 degrees of freedom 
# Null hypothesis probability =   1.347908e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.289e-08   1.425e-09
25- 50  4.749e-08   3.810e-09
50-150  5.982e-08   8.870e-09
15-150  1.202e-07   1.130e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.995       (      )
Norm        : 8.64827       (-8.64827     -8.64827)
------------------------------------------------------------
# Chi-Squared =          59.15 using 59 PHA bins.
# Reduced chi-squared =          1.038 for     57 degrees of freedom 
# Null hypothesis probability =   3.971479e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.154e-08   1.125e-08
25- 50  4.143e-08   2.170e-08
50-150  9.086e-08   4.763e-08
15-150  1.538e-07   8.075e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.98320        (-1.7802      2.16123)
R1^2/D10^2  : 3.53397        (-2.15643      5.33613)
kT2 [keV]   : 22.9688        (-4.55854      9.07804)
R2^2/D10^2  : 4.48892E-02    (-0.0310378   0.057681)
------------------------------------------------------------
# Chi-Squared =          62.99 using 59 PHA bins.
# Reduced chi-squared =          1.145 for     55 degrees of freedom 
# Null hypothesis probability =   2.146881e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.104e-08   6.278e-09
25- 50  3.988e-08   8.965e-09
50-150  9.326e-08   2.825e-08
15-150  1.542e-07   3.340e-08
Plot creation:
Tue Jul 26 19:02:00 EDT 2011