batgrbproduct Analysis for Trigger=317897

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jul 28 14:25:27 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger317897/SDC
======================================================================

  Trigger: 00317897      Segment: 000

  BAT Trigger Time: 238677853.568   [s; MET]
      Trigger Stop: 238677853.824   [s; MET]
               UTC: 2008-07-25T11:24:10.600360    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 299.588797225291   Dec: 35.1728248681439  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.07
     Image Trigger?:     NO
     Rate S/N Ratio:     9  [ if not an image trigger ]
     Image S/N Ratio:    7.07

  Flight Position:   [ source = BAT ]
    RA: 299.588797225291   Dec: 35.1728248681439  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 299.580069841578   Dec: 35.2021218452263  [deg; J2000]  
        { 19h 58m 19.2s , +35d 12' 07.6" }
         +/- 0.711330482799604 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.163518742843017 [arcmin] (formal 1-sigma fit error)
    SNR: 49.4817354263761
 
  Angular difference between Flight and Ground position is 1.809164 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 1144.37199997902 +/- 393.54502283316
        Measured from: -609.751999974251
                   to: 534.620000004768     [s; relative to TRIGTIME]
     T50: 419.588000029325 +/- 14.3389573974532
        Measured from: -59.0600000023842
                   to: 360.528000026941     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 343.89200001955     
                   to: 344.89200001955     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -673.824000000954     
                   to: 696.240000009537     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    11.061749  13.175175   8.064987   1.407222
           0.164844   0.163483   0.144157   0.126468 [error]
 Peak      0.033363   0.049229   0.026929   0.006299
           0.005648   0.005841   0.004988   0.004428 [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 3.40e-06 5.31e-06 6.24e-06 1.42e-05 1.91e-05 2.91e-05   erg/cm2
              Error 1.41e-07 1.22e-07 1.63e-07 8.63e-07 3.89e-07 9.37e-07   erg/cm2
Peak flux Power-law 3.26e-01 3.04e-01 1.96e-01 1.96e-01 9.07e-01 1.02e+00   ph/cm2/s
              Error 7.20e-02 4.46e-02 4.00e-02 7.77e-02 1.32e-01 1.53e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.24e-06 5.36e-06 6.31e-06 1.09e-05 1.88e-05 2.58e-05   erg/cm2
              Error 1.90e-07 1.30e-07 1.75e-07 2.35e-06 4.71e-07 2.43e-06   erg/cm2
Peak flux Cutoff-PL 2.81e-01 3.50e-01 1.99e-01 4.74e-02 8.67e-01 8.77e-01   ph/cm2/s
              Error 8.52e-02 6.41e-02 4.87e-02 8.88e-02 1.37e-01 1.55e-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    1.768    0.041    -      -           2.33e-03 4.68e-05   43.700 57
CPL   1.569    0.169     115.7  147.2      2.88e-03 5.10e-04   39.520 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.629    0.246    -      -           6.99e-03 1.11e-03   51.950 57
CPL   0.338    1.417      56.4   83.6      3.66e-02 1.45e-01   48.660 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 1370.060 -673.824  696.240
T90  1144.370 -609.752  534.620
T50   419.588  -59.060  360.528
Peak    1.000  343.892  344.892

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  299.5801 +35.2021 0.0039   16.1 -139.2      10.5283    49.5  TRIG_00317897       
------------------------------------------
 
Foreground time interval of the image:
-614.567 -603.472 (delta_t =  11.096 [sec])
-239.568  16.533 (delta_t = 256.101 [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
Multiple GTIs in the spectrum
tstart tstop
-673.824000 -603.471600
-239.568000 542.477500
660.432000 696.240000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.76798     ( -0.0409672   0.0410606 )
Norm@50keV  : 2.33169E-03    ( -4.67927e-05   4.67797e-05 )
------------------------------------------------------------
# Chi-Squared =          43.70 using 59 PHA bins.
# Reduced chi-squared =         0.7666 for     57 degrees of freedom 
# Null hypothesis probability =   9.023020e-01
 
Photon flux (15-150 keV)    in 888.2 sec: 0.317399 ( -0.00755419  0.00759399 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.90917e-05 ( -3.89229e-07  3.89507e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-673.824000 -603.471600
-239.568000 542.477500
660.432000 696.240000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56949     ( -0.172116   0.165728 )
Epeak [keV] : 115.707      ( -30.2598 264.086 )
Norm@50keV  : 2.88072E-03    ( -0.000455255   0.000565025 )
------------------------------------------------------------
# Chi-Squared =          39.52 using 59 PHA bins.
# Reduced chi-squared =         0.7057 for     56 degrees of freedom 
# Null hypothesis probability =   9.534018e-01
 
Photon flux (15-150 keV)    in 888.2 sec: 0.311136 ( -0.008992  0.00906 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.87769e-05 ( -4.71634e-07  4.69858e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-673.824000 -603.471600
-239.568000 542.477500
660.432000 696.240000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.30089   ( -0.391497   2.87776 )
beta        : -1.85178    ( 1.85189   0.0824623 )
Epeak [keV] : 63.6264      ( -37.1987 116.309 )
Norm@50keV   : 4.15187E-03    ( -0.00158353   0.025294 )
------------------------------------------------------------
# Chi-Squared =          38.38 using 59 PHA bins.
# Reduced chi-squared =         0.6978 for     55 degrees of freedom 
# Null hypothesis probability =   9.567833e-01
 
Photon flux (15-150 keV)    in 888.2 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]    : 14.5752  (  )
R^2/D10^2   : 3.47416E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         521.75 using 59 PHA bins.
# Reduced chi-squared =         9.1535 for     57 degrees of freedom 
# Null hypothesis probability =   2.782806e-76
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.378e-06   5.507e-08
25- 50  5.331e-06   1.430e-07
50-150  7.607e-06   2.749e-07
15-150  1.432e-05   3.153e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 128.902       (16.8642      41.7639)
Norm        : 1.29338       (-0.0395635     0.041782)
------------------------------------------------------------
# Chi-Squared =          46.49 using 59 PHA bins.
# Reduced chi-squared =         0.8156 for     57 degrees of freedom 
# Null hypothesis probability =   8.386774e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.982e-06   1.115e-07
25- 50  5.400e-06   1.168e-07
50-150  9.972e-06   8.829e-07
15-150  1.835e-05   8.616e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.30501        (-0.564366      0.586726)
R1^2/D10^2  : 0.302680        (-0.0716459      0.102765)
kT2 [keV]   : 25.7735        (-2.0678      2.58721)
R2^2/D10^2  : 3.30618E-03    (-0.000998261   0.00126211)
------------------------------------------------------------
# Chi-Squared =          53.18 using 59 PHA bins.
# Reduced chi-squared =         0.9670 for     55 degrees of freedom 
# Null hypothesis probability =   5.443097e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.737e-06   1.945e-07
25- 50  5.491e-06   2.203e-07
50-150  1.010e-05   5.596e-07
15-150  1.833e-05   8.260e-07

Peak spectrum fit

Power-law model
Time interval is from  343.892 sec. to  344.892 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62896     ( -0.241308   0.249881 )
Norm@50keV  : 6.99286E-03    ( -0.00112169   0.00110262 )
------------------------------------------------------------
# Chi-Squared =          51.95 using 59 PHA bins.
# Reduced chi-squared =         0.9114 for     57 degrees of freedom 
# Null hypothesis probability =   6.645668e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.906863 ( -0.131537  0.131582 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.51807e-08 ( -1.10395e-08  1.1293e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  343.892 sec. to  344.892 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.338235     ( -1.62162   1.21243 )
Epeak [keV] : 56.4314      ( -12.675 154.586 )
Norm@50keV  : 3.66443E-02    ( -0.0366478   0.253412 )
------------------------------------------------------------
# Chi-Squared =          48.66 using 59 PHA bins.
# Reduced chi-squared =         0.8689 for     56 degrees of freedom 
# Null hypothesis probability =   7.462614e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.867435 ( -0.136297  0.136755 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.76545e-08 ( -1.15725e-08  1.30422e-08 ) ergs/cm2
 
Band function
Time interval is from  343.892 sec. to  344.892 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.294513   ( -1.02352   0.199509 )
beta        : -2.45247    ( 2.6011   0.988511 )
Epeak [keV] : 54.1732      ( -28.8363 48.2571 )
Norm@50keV   : 3.97974E-02    ( -0.0477446   149.983 )
------------------------------------------------------------
# Chi-Squared =          48.33 using 59 PHA bins.
# Reduced chi-squared =         0.8788 for     55 degrees of freedom 
# Null hypothesis probability =   7.253878e-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]    : 12.4071  (-1.79348  2.13768)
R^2/D10^2   : 0.206699  (-0.0913144   0.157189)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          52.10 using 59 PHA bins.
# Reduced chi-squared =         0.9140 for     57 degrees of freedom 
# Null hypothesis probability =   6.591841e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.744e-09   1.757e-09
25- 50  2.206e-08   4.345e-09
50-150  2.086e-08   7.130e-09
15-150  4.967e-08   1.099e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 134.133       (-24.9135      -100.596)
Norm        : 3.84117       (-0.617669     0.766892)
------------------------------------------------------------
# Chi-Squared =          50.16 using 59 PHA bins.
# Reduced chi-squared =         0.8799 for     57 degrees of freedom 
# Null hypothesis probability =   7.275766e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.948e-09   1.805e-09
25- 50  1.813e-08   2.810e-09
50-150  3.410e-08   6.845e-09
15-150  6.217e-08   9.780e-09
Double BB
R1^2/D10^2  : 3.87209E-04        (      )
kT2 [keV]   : 10.6046        (-9.40731      2.64159)
R2^2/D10^2  : 0.323916    (-0.157712   8655.64)
------------------------------------------------------------
# Chi-Squared =          48.87 using 59 PHA bins.
# Chi-Squared =          48.83 using 59 PHA bins.
# Chi-Squared =          48.73 using 59 PHA bins.
# Reduced chi-squared =         0.8886 for     55 degrees of freedom 
# Reduced chi-squared =         0.8878 for     55 degrees of freedom 
# Reduced chi-squared =         0.8860 for     55 degrees of freedom 
# Null hypothesis probability =   7.064495e-01
# Null hypothesis probability =   7.079697e-01
# Null hypothesis probability =   7.114875e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.778e-09   4.963e-09
25- 50  1.993e-08   1.040e-08
50-150  2.744e-08   1.624e-08
15-150  5.615e-08   2.887e-08
Plot creation:
Thu Jul 28 14:54:35 EDT 2011