batgrbproduct Analysis for Trigger=321750

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jul 28 11:54:52 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger321750/SDC
======================================================================

  Trigger: 00321750      Segment: 000

  BAT Trigger Time: 241267712   [s; MET]
      Trigger Stop: 241267824   [s; MET]
               UTC: 2008-08-24T10:48:28.956600    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 282.088639951228   Dec: -3.19731935616618  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    11.48
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    11.48

  Flight Position:   [ source = BAT ]
    RA: 282.088639951228   Dec: -3.19731935616618  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 282.053430650073   Dec: -3.24615273973677  [deg; J2000]  
        { 18h 48m 12.8s , -03d 14' 46.1" }
         +/- 2.7227907139332 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.7332768325809 [arcmin] (formal 1-sigma fit error)
    SNR: 7.27226064476345
 
  Angular difference between Flight and Ground position is 3.610225 arcmin
 
  Partial Coding Fraction: 0.953125    [ including projection effects ]

  Duration
     T90: 479.876000016928 +/- 58.0355274795638
        Measured from: -7.48800000548363
                   to: 472.388000011444     [s; relative to TRIGTIME]
     T50: 173.351999998093 +/- 43.0296597616483
        Measured from: 165.136000007391
                   to: 338.488000005484     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 430.083999991417     
                   to: 431.083999991417     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -54.8519999980927     
                   to: 505.511999994516     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.863245   2.218481   0.531254   0.065735
           0.138779   0.132587   0.114393   0.098337 [error]
 Peak      0.017757   0.011129   0.014965   0.009764
           0.005762   0.005443   0.004679   0.004031 [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 9.28e-07 8.54e-07 5.43e-07 5.31e-07 2.55e-06 2.86e-06   erg/cm2
              Error 8.78e-08 6.95e-08 9.24e-08 1.69e-07 2.16e-07 3.04e-07   erg/cm2
Peak flux Power-law 1.07e-01 1.19e-01 9.42e-02 1.24e-01 3.65e-01 4.43e-01   ph/cm2/s
              Error 7.15e-02 4.76e-02 3.94e-02 1.25e-01 1.28e-01 1.56e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.74e-07 9.45e-07 3.82e-07 4.59e-08 2.24e-06 2.25e-06   erg/cm2
              Error 9.80e-08 9.17e-08 1.43e-07 1.02e-07 2.47e-07 2.71e-07   erg/cm2
Peak flux Cutoff-PL 1.08e-01 1.19e-01 9.38e-02 1.22e-01 3.66e-01 4.41e-01   ph/cm2/s
              Error 7.55e-02 4.75e-02 2.95e-02 1.52e-01 1.26e-01 1.57e-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    2.652    0.168    -      -           4.34e-04 5.36e-05   63.270 57
CPL   1.252    0.981      17.9    0.0      3.51e-03 0.00e+00   55.780 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.333    0.707    -      -           3.04e-03 1.03e-03   60.700 57
CPL   1.351    0.741    9999.4    0.0      3.03e-03 8.04e-03   60.710 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  560.364  -54.852  505.512
T90   479.876   -7.488  472.388
T50   173.352  165.136  338.488
Peak    1.000  430.084  431.084

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  282.0534  -3.2462 0.0265   19.2  171.4       3.1429     7.3  TRIG_00321750       
------------------------------------------
 
Foreground time interval of the image:
-54.852 449.301 (delta_t = 504.153 [sec])
Background time interval of the image:
-239.000 -54.852 (delta_t = 184.148 [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  -54.852 sec. to  505.512 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.65203     ( -0.163857   0.172874 )
Norm@50keV  : 4.34214E-04    ( -5.35481e-05   5.36563e-05 )
------------------------------------------------------------
# Chi-Squared =          63.27 using 59 PHA bins.
# Reduced chi-squared =          1.110 for     57 degrees of freedom 
# Null hypothesis probability =   2.648189e-01
 
Photon flux (15-150 keV)    in 560.4 sec: 9.39038E-02 ( -0.00681721  0.00682154 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.54673e-06 ( -2.13879e-07  2.18555e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -54.852 sec. to  505.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25231     ( -1.21823   0.743462 )
Epeak [keV] : 17.9022      (   )
Norm@50keV  : 3.50858E-03    (     )
------------------------------------------------------------
# Chi-Squared =          55.78 using 59 PHA bins.
# Reduced chi-squared =         0.9961 for     56 degrees of freedom 
# Null hypothesis probability =   4.831799e-01
 
Photon flux (15-150 keV)    in 560.4 sec: 8.91109E-02 ( -0.0073597  0.0073838 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24167e-06 ( -2.29708e-07  2.63579e-07 ) ergs/cm2
 
Band function
Time interval is from  -54.852 sec. to  505.512 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.731084   ( -1.67454   1.84233 )
beta        : -3.48299    ( 3.4436   0.612552 )
Epeak [keV] : 21.0343      ( -8.90215 4.165 )
Norm@50keV   : 8.17332E-03    ( -0.00790305   0.269773 )
------------------------------------------------------------
# Chi-Squared =          54.70 using 59 PHA bins.
# Reduced chi-squared =         0.9946 for     55 degrees of freedom 
# Null hypothesis probability =   4.859340e-01
 
Photon flux (15-150 keV)    in 560.4 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]    : 6.88869  (-0.515948  0.556244)
R^2/D10^2   : 0.181367  (-0.0520157   0.0739784)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          67.84 using 59 PHA bins.
# Reduced chi-squared =          1.190 for     57 degrees of freedom 
# Null hypothesis probability =   1.541299e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.618e-07   8.770e-08
25- 50  1.011e-06   9.919e-08
50-150  1.581e-07   4.539e-08
15-150  1.931e-06   1.664e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 26.7739       (-4.14267      5.18035)
Norm        : 0.820017       (-0.135432     0.168815)
------------------------------------------------------------
# Chi-Squared =          55.79 using 59 PHA bins.
# Reduced chi-squared =         0.9787 for     57 degrees of freedom 
# Null hypothesis probability =   5.207182e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.783e-07   8.014e-08
25- 50  9.396e-07   7.986e-08
50-150  4.408e-07   1.253e-07
15-150  2.259e-06   2.026e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 16.2531        (      )
R1^2/D10^2  : 1.93868E-03        (-0.00182585      0.126165)
kT2 [keV]   : 5.66363        (-3.7338      0.972375)
R2^2/D10^2  : 0.355833    (-0.15626   49.8138)
------------------------------------------------------------
# Chi-Squared =          57.50 using 59 PHA bins.
# Chi-Squared =          56.92 using 59 PHA bins.
# Reduced chi-squared =          1.046 for     55 degrees of freedom 
# Reduced chi-squared =          1.035 for     55 degrees of freedom 
# Null hypothesis probability =   3.826630e-01
# Null hypothesis probability =   4.033440e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.645e-07   4.517e-07
25- 50  9.438e-07   4.772e-07
50-150  3.630e-07   2.077e-07
15-150  2.171e-06   1.077e-06

Peak spectrum fit

Power-law model
Time interval is from  430.084 sec. to  431.084 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33336     ( -0.737319   0.676722 )
Norm@50keV  : 3.04412E-03    ( -0.00103462   0.00102533 )
------------------------------------------------------------
# Chi-Squared =          60.70 using 59 PHA bins.
# Reduced chi-squared =          1.065 for     57 degrees of freedom 
# Null hypothesis probability =   3.439641e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.365492 ( -0.127554  0.128158 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.98448e-08 ( -1.11941e-08  1.15472e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  430.084 sec. to  431.084 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.35102     ( -0.918399   0.562616 )
Epeak [keV] : 9999.36      ( -10000 -10000 )
Norm@50keV  : 3.02932E-03    ( -0.00103774   0.015051 )
------------------------------------------------------------
# Chi-Squared =          60.71 using 59 PHA bins.
# Reduced chi-squared =          1.084 for     56 degrees of freedom 
# Null hypothesis probability =   3.100068e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.366268 ( -0.128276  0.123 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.97092e-08 ( -1.10731e-08  1.16845e-08 ) ergs/cm2
 
Band function
Time interval is from  430.084 sec. to  431.084 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99999   ( -137189   -137189 )
beta        : -1.46980    ( -1.03335   0.821276 )
Epeak [keV] : 25.9099      ( -25.7688 14.3832 )
Norm@50keV   : 235.617    ( -244.383   2.52731e+06 )
------------------------------------------------------------
# Chi-Squared =          60.40 using 59 PHA bins.
# Reduced chi-squared =          1.098 for     55 degrees of freedom 
# Null hypothesis probability =   2.870285e-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]    : 19.8810  (-10.6906  27.123)
R^2/D10^2   : 1.53357E-02  (-0.0148905   0.193623)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          65.25 using 59 PHA bins.
# Reduced chi-squared =          1.145 for     57 degrees of freedom 
# Null hypothesis probability =   2.118421e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.171e-09   7.920e-10
25- 50  5.811e-09   3.641e-09
50-150  1.701e-08   1.166e-08
15-150  2.400e-08   1.544e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.999      -199.999)
Norm        : 1.50667       (-0.513194     0.513194)
------------------------------------------------------------
# Chi-Squared =          61.38 using 59 PHA bins.
# Reduced chi-squared =          1.077 for     57 degrees of freedom 
# Null hypothesis probability =   3.219023e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.752e-09   2.294e-09
25- 50  7.217e-09   4.310e-09
50-150  1.583e-08   9.255e-09
15-150  2.680e-08   1.605e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.95578        (-2.46893      6.1125)
R1^2/D10^2  : 0.877228        (-0.802408      2.0326)
kT2 [keV]   : 45.4937        (-45.4237      -45.424)
R2^2/D10^2  : 1.17418E-03    (-0.00113481   0.0146701)
------------------------------------------------------------
# Chi-Squared =          59.16 using 59 PHA bins.
# Reduced chi-squared =          1.076 for     55 degrees of freedom 
# Null hypothesis probability =   3.264143e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.376e-09   2.683e-09
25- 50  6.029e-09   3.733e-09
50-150  2.270e-08   1.386e-08
15-150  3.311e-08   1.651e-08
Plot creation:
Thu Jul 28 12:56:07 EDT 2011