batgrbproduct Analysis for Trigger=325895

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jul 27 13:02:42 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger325895/SDC
======================================================================

  Trigger: 00325895      Segment: 000

  BAT Trigger Time: 244043704   [s; MET]
      Trigger Stop: 244044024   [s; MET]
               UTC: 2008-09-25T13:55:00.874580    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 299.60070425957   Dec: 35.2262795112816  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.46
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.46

  Flight Position:   [ source = BAT ]
    RA: 299.60070425957   Dec: 35.2262795112816  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 299.591497375724   Dec: 35.2068183456817  [deg; J2000]  
        { 19h 58m 22.0s , +35d 12' 24.5" }
         +/- 1.89272565854624 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.922399903178455 [arcmin] (formal 1-sigma fit error)
    SNR: 12.2258440557912
 
  Angular difference between Flight and Ground position is 1.251852 arcmin
 
  Partial Coding Fraction: 0.07324219    [ including projection effects ]

  Duration
     T90: 443.084000021219 +/- 510.049068503434
        Measured from: -110.807999998331
                   to: 332.276000022888     [s; relative to TRIGTIME]
     T50: 282.319999992847 +/- 72.7695080019055
        Measured from: -25.0719999969006
                   to: 257.247999995947     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 116.631999999285     
                   to: 117.631999999285     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -130.016000002623     
                   to: 936.715999990702     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    11.526267  14.150073   8.747609   2.175252
           0.455745   0.460059   0.430593   0.443619 [error]
 Peak      0.070305   0.064515   0.046075   0.043005
           0.022416   0.021538   0.020979   0.021214 [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 5.13e-06 7.15e-06 7.39e-06 1.40e-05 2.41e-05 3.36e-05   erg/cm2
              Error 3.66e-07 3.01e-07 4.49e-07 1.81e-06 1.05e-06 2.17e-06   erg/cm2
Peak flux Power-law 8.10e-01 6.04e-01 3.00e-01 2.12e-01 1.81e+00 1.93e+00   ph/cm2/s
              Error 6.83e-01 2.14e-01 2.40e-01 3.14e-01 6.60e-01 6.64e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.75e-06 7.41e-06 7.50e-06 7.71e-06 2.33e-05 2.74e-05   erg/cm2
              Error 4.69e-07 3.66e-07 4.81e-07 3.71e-06 1.24e-06 3.95e-06   erg/cm2
Peak flux Cutoff-PL 8.09e-01 6.04e-01 3.01e-01 2.12e-01 1.82e+00 1.93e+00   ph/cm2/s
              Error 6.82e-01 2.10e-01 1.82e-01 3.12e-01 6.55e-01 6.64e-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    1.954    0.080    -      -           2.45e-03 1.09e-04   50.210 57
CPL   1.527    0.362      54.0   19.7      4.04e-03 1.76e-03   45.750 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.009    0.917    -      -           1.20e-02 5.47e-03   68.990 57
CPL   2.013    0.000      15.9    0.0      1.19e-02 0.00e+00   68.910 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 1066.730 -130.016  936.716
T90   443.084 -110.808  332.276
T50   282.320  -25.072  257.248
Peak    1.000  116.632  117.632

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  299.5915 +35.2068 0.0157   54.6  173.1      12.4499    12.2  TRIG_00325895       
------------------------------------------
 
Foreground time interval of the image:
 -7.499 336.901 (delta_t = 344.400 [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
Time interval is from -130.016 sec. to  936.716 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95416     ( -0.0793797   0.0806704 )
Norm@50keV  : 2.45390E-03    ( -0.000109097   0.000108477 )
------------------------------------------------------------
# Chi-Squared =          50.21 using 59 PHA bins.
# Reduced chi-squared =         0.8810 for     57 degrees of freedom 
# Null hypothesis probability =   7.255791e-01
 
Photon flux (15-150 keV)    in 1067 sec: 0.360540 ( -0.0160859  0.0161574 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.40986e-05 ( -1.04381e-06  1.04693e-06 ) ergs/cm2
 
Cutoff power-law model
Time interval is from -130.016 sec. to  936.716 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52704     ( -0.377444   0.346302 )
Epeak [keV] : 53.9645      ( -10.5894 28.7515 )
Norm@50keV  : 4.03844E-03    ( -0.00131863   0.00219728 )
------------------------------------------------------------
# Chi-Squared =          45.75 using 59 PHA bins.
# Reduced chi-squared =         0.8170 for     56 degrees of freedom 
# Null hypothesis probability =   8.340873e-01
 
Photon flux (15-150 keV)    in 1067 sec: 0.349374 ( -0.018236  0.01831 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.32893e-05 ( -1.24113e-06  1.23569e-06 ) ergs/cm2
 
Band function
Time interval is from -130.016 sec. to  936.716 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.30609   ( -0.45456   0.769806 )
beta        : -2.25719    ( 2.25367   0.244772 )
Epeak [keV] : 48.3137      ( -11.0705 17.0428 )
Norm@50keV   : 5.40269E-03    ( -0.00240555   0.0105107 )
------------------------------------------------------------
# Chi-Squared =          44.05 using 59 PHA bins.
# Reduced chi-squared =         0.8010 for     55 degrees of freedom 
# Null hypothesis probability =   8.548399e-01
 
Photon flux (15-150 keV)    in 1067 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]    : 12.1804  (  )
R^2/D10^2   : 7.60512E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         147.00 using 59 PHA bins.
# Reduced chi-squared =         2.5790 for     57 degrees of freedom 
# Null hypothesis probability =   6.942385e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.549e-06   1.985e-07
25- 50  8.163e-06   3.889e-07
50-150  7.354e-06   6.423e-07
15-150  1.807e-05   7.789e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 83.0330       (-10.8199      13.5141)
Norm        : 1.62938       (-0.110946     0.121232)
------------------------------------------------------------
# Chi-Squared =          46.65 using 59 PHA bins.
# Reduced chi-squared =         0.8184 for     57 degrees of freedom 
# Null hypothesis probability =   8.344880e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.521e-06   2.982e-07
25- 50  7.509e-06   3.190e-07
50-150  1.086e-05   1.001e-06
15-150  2.289e-05   1.147e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.68061        (-1.75961      1.91369)
R1^2/D10^2  : 0.488009        (-0.258321      0.990884)
kT2 [keV]   : 20.7328        (-4.35412      10.8547)
R2^2/D10^2  : 7.06408E-03    (-0.00544426   0.0124058)
------------------------------------------------------------
# Chi-Squared =          59.16 using 59 PHA bins.
# Reduced chi-squared =          1.076 for     55 degrees of freedom 
# Null hypothesis probability =   3.262835e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.163e-06   7.154e-07
25- 50  7.568e-06   1.006e-06
50-150  1.066e-05   2.310e-06
15-150  2.239e-05   3.302e-06

Peak spectrum fit

Power-law model
Time interval is from  116.632 sec. to  117.632 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.00908     ( -0.822711   1.01073 )
Norm@50keV  : 1.20374E-02    ( -0.00601318   0.00492352 )
------------------------------------------------------------
# Chi-Squared =          68.99 using 59 PHA bins.
# Reduced chi-squared =          1.210 for     57 degrees of freedom 
# Null hypothesis probability =   1.325607e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.81355 ( -0.658862  0.660455 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.11021e-07 ( -4.44527e-08  4.61389e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  116.632 sec. to  117.632 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01277     (     )
Epeak [keV] : 15.8841      (   )
Norm@50keV  : 1.18504E-02    (     )
------------------------------------------------------------
# Chi-Squared =          68.91 using 59 PHA bins.
# Reduced chi-squared =          1.231 for     56 degrees of freedom 
# Null hypothesis probability =   1.152241e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.81929 ( -0.65793  0.65307 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.11867e-07 ( -4.49074e-08  4.5301e-08 ) ergs/cm2
 
Band function
Time interval is from  116.632 sec. to  117.632 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98881   ( -172.619   -172.619 )
beta        : -2.05218    ( -1.92794   0.859554 )
Epeak [keV] : 19.0140      ( -18.9731 12.0627 )
Norm@50keV   : 1.17671E+04    ( -11989.3   1.7489e+06 )
------------------------------------------------------------
# Chi-Squared =          68.95 using 59 PHA bins.
# Reduced chi-squared =          1.254 for     55 degrees of freedom 
# Null hypothesis probability =   9.785890e-02
 
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]    : 5.50591  (-1.74731  4.61887)
R^2/D10^2   : 9.21722  (-9.20971   50.3421)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          73.48 using 59 PHA bins.
# Reduced chi-squared =          1.289 for     57 degrees of freedom 
# Null hypothesis probability =   6.986220e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.246e-08   1.992e-08
25- 50  2.669e-08   1.794e-08
50-150  1.695e-09   1.713e-09
15-150  6.086e-08   3.755e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.3275       (-100.623      -100.623)
Norm        : 7.47770       (-2.705     21.1554)
------------------------------------------------------------
# Chi-Squared =          70.52 using 59 PHA bins.
# Reduced chi-squared =          1.237 for     57 degrees of freedom 
# Null hypothesis probability =   1.075329e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.954e-08   1.281e-08
25- 50  3.375e-08   2.142e-08
50-150  5.448e-08   4.388e-08
15-150  1.078e-07   7.520e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.76537        (-1.56003      2.53308)
R1^2/D10^2  : 16.4824        (-14.3393      105.622)
kT2 [keV]   : 48.7481        (-28.2208      -48.7621)
R2^2/D10^2  : 3.24496E-03    (-0.00312181   0.0364495)
------------------------------------------------------------
# Chi-Squared =          65.17 using 59 PHA bins.
# Reduced chi-squared =          1.185 for     55 degrees of freedom 
# Null hypothesis probability =   1.638938e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.380e-08   2.131e-08
25- 50  2.524e-08   1.468e-08
50-150  7.413e-08   4.517e-08
15-150  1.332e-07   7.075e-08
Plot creation:
Wed Jul 27 13:40:47 EDT 2011