batgrbproduct Analysis for Trigger=382941

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sun Jan 17 21:26:21 EST 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger382941/GCN5_download_cron
======================================================================

  Trigger: 00382941      Segment: 000

  BAT Trigger Time: 285455185.024   [s; MET]
      Trigger Stop: 285455185.088   [s; MET]
               UTC: 2010-01-17T21:06:19.576420    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 11.2598564623618   Dec: -1.59437398006469  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.19
     Image Trigger?:     NO
     Rate S/N Ratio:     21.0237960416286  [ if not an image trigger ]
     Image S/N Ratio:    7.19

  Flight Position:   [ source = BAT ]
    RA: 11.2598564623618   Dec: -1.59437398006469  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 11.2795264474402   Dec: -1.58645740044666  [deg; J2000]  
        { 00h 45m 07.1s , -01d 35' 11.2" }
         +/- 1.73032237270443 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.885782467194794 [arcmin] (formal 1-sigma fit error)
    SNR: 13.8975075401166
 
  Angular difference between Flight and Ground position is 1.271777 arcmin
 
  Partial Coding Fraction: 0.6640625    [ including projection effects ]

  Duration
     T90: 0.287999927997589 +/- 0.0288444355959144
        Measured from: 0.00400012731552124
                   to: 0.29200005531311     [s; relative to TRIGTIME]
     T50: 0.167999923229218 +/- 0.0447213968684142
        Measured from: 0.048000156879425
                   to: 0.216000080108643     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.346000015735626     
                   to: 0.653999984264374     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00800001621246338     
                   to: 0.312000036239624     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.021454   0.036593   0.053486   0.013075
           0.004649   0.005437   0.005329   0.004375 [error]
 Peak      0.021947   0.036360   0.054035   0.012925
           0.004671   0.005466   0.005341   0.004403 [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 5.92e-09 1.59e-08 3.45e-08 1.95e-07 9.30e-08 2.52e-07   erg/cm2
              Error 1.61e-09 2.61e-09 4.70e-09 6.19e-08 1.27e-08 6.39e-08   erg/cm2
Peak flux Power-law 5.81e-01 8.48e-01 9.22e-01 1.88e+00 2.93e+00 4.23e+00   ph/cm2/s
              Error 1.61e-01 1.44e-01 1.23e-01 5.43e-01 3.87e-01 6.06e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.50e-09 1.62e-08 3.58e-08 1.37e-07 9.23e-08 1.95e-07   erg/cm2
              Error 1.97e-09 2.82e-09 5.83e-09 1.10e-07 1.30e-08 1.02e-07   erg/cm2
Peak flux Cutoff-PL 5.29e-01 8.60e-01 9.63e-01 1.38e+00 2.90e+00 3.73e+00   ph/cm2/s
              Error 2.00e-01 1.53e-01 1.56e-01 8.88e-01 3.93e-01 8.76e-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 3.76e+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    0.884    0.224    -      -           2.57e-02 3.40e-03   64.420 57
CPL   0.602    0.720     297.3    0.0      3.40e-02 3.18e-02   64.080 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.879    0.223    -      -           2.55e-02 3.38e-03   62.300 57
CPL   0.630    0.748     331.6    0.0      3.26e-02 3.16e-02   61.860 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: 0.256000 sec.
T50 in the 50-300 keV band: 0.192000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.320   -0.008    0.312
T90     0.288    0.004    0.292
T50     0.168    0.048    0.216
Peak    1.000   -0.346    0.654

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   11.2795  -1.5865 0.0139   32.7  169.9       0.1312    13.9  TRIG_00382941       
------------------------------------------
 
Foreground time interval of the image:
 -0.008   0.312 (delta_t =   0.320 [sec])
Background time interval of the image:
-239.024  -0.008 (delta_t = 239.016 [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   -0.008 sec. to    0.312 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.883545     ( -0.229348   0.217975 )
Norm@50keV  : 2.57376E-02    ( -0.00341781   0.0033813 )
------------------------------------------------------------
# Chi-Squared =          64.42 using 59 PHA bins.
# Reduced chi-squared =          1.130 for     57 degrees of freedom 
# Null hypothesis probability =   2.330228e-01
 
Photon flux (15-150 keV)    in 0.32 sec: 2.95382 ( -0.389383  0.390323 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.30298e-08 ( -1.26538e-08  1.27036e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.008 sec. to    0.312 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.601895     ( -0.967814   0.4716 )
Epeak [keV] : 297.272      ( -297.273 -297.273 )
Norm@50keV  : 3.40319E-02    ( -0.0147931   0.0489032 )
------------------------------------------------------------
# Chi-Squared =          64.08 using 59 PHA bins.
# Reduced chi-squared =          1.144 for     56 degrees of freedom 
# Null hypothesis probability =   2.141838e-01
 
Photon flux (15-150 keV)    in 0.32 sec: 2.92834 ( -0.39699  0.39213 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.22992e-08 ( -1.3048e-08  1.29181e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.008 sec. to    0.312 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.620399   ( -0.461715   0.312693 )
beta        : -9.36812    ( 9.99574   19.9957 )
Epeak [keV] : 312.477      ( -149.436 -312.577 )
Norm@50keV   : 3.34683E-02    ( -0.0107738   0.0239171 )
------------------------------------------------------------
# Chi-Squared =          64.08 using 59 PHA bins.
# Reduced chi-squared =          1.165 for     55 degrees of freedom 
# Null hypothesis probability =   1.880230e-01
 
Photon flux (15-150 keV)    in 0.32 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]    : 25.2422  (-4.04107  5.34775)
R^2/D10^2   : 7.20657E-02  (-0.0316515   0.0514517)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          72.42 using 59 PHA bins.
# Reduced chi-squared =          1.270 for     57 degrees of freedom 
# Null hypothesis probability =   8.192710e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.539e-09   6.491e-10
25- 50  1.448e-08   3.390e-09
50-150  6.830e-08   1.490e-08
15-150  8.532e-08   1.661e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.998       (      )
Norm        : 11.7709       (-11.7709     -11.7709)
------------------------------------------------------------
# Chi-Squared =          88.83 using 59 PHA bins.
# Reduced chi-squared =          1.558 for     57 degrees of freedom 
# Null hypothesis probability =   4.428131e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.378e-09   5.139e-09
25- 50  1.804e-08   9.971e-09
50-150  3.956e-08   2.187e-08
15-150  6.698e-08   3.646e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.06713        (-2.63655      4.7473)
R1^2/D10^2  : 1.79724        (-1.43198      7.57661)
kT2 [keV]   : 34.0278        (-8.05692      21.0883)
R2^2/D10^2  : 2.64959E-02    (-0.0196837   0.0348284)
------------------------------------------------------------
# Chi-Squared =          62.39 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     55 degrees of freedom 
# Null hypothesis probability =   2.301105e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.077e-09   3.430e-09
25- 50  1.567e-08   7.547e-09
50-150  7.177e-08   3.885e-08
15-150  9.351e-08   4.864e-08

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.008 sec. to    0.316 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.878891     ( -0.229078   0.217558 )
Norm@50keV  : 2.55029E-02    ( -0.00339589   0.00335834 )
------------------------------------------------------------
# Chi-Squared =          62.30 using 59 PHA bins.
# Reduced chi-squared =          1.093 for     57 degrees of freedom 
# Null hypothesis probability =   2.932931e-01
 
Photon flux (15-150 keV)    in 0.324 sec: 2.92694 ( -0.386392  0.387396 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.35022e-08 ( -1.26902e-08  1.27459e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.008 sec. to    0.316 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.630076     ( -1.01802   0.478381 )
Epeak [keV] : 331.607      ( -264.021 -264.021 )
Norm@50keV  : 3.25711E-02    ( -0.0125168   0.0506274 )
------------------------------------------------------------
# Chi-Squared =          61.86 using 59 PHA bins.
# Reduced chi-squared =          1.105 for     56 degrees of freedom 
# Null hypothesis probability =   2.747690e-01
 
Photon flux (15-150 keV)    in 0.324 sec: 2.89718 ( -0.39381  0.39283 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.26656e-08 ( -1.30906e-08  1.29956e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.008 sec. to    0.316 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99999   ( -230836   -230836 )
beta        : -0.952140    ( -0.297354   0.246271 )
Epeak [keV] : 28.9354      ( -27.7228 12.0661 )
Norm@50keV   : 689.773    ( -577.572   3.35512e+06 )
------------------------------------------------------------
# Chi-Squared =          60.85 using 59 PHA bins.
# Reduced chi-squared =          1.106 for     55 degrees of freedom 
# Null hypothesis probability =   2.735124e-01
 
Photon flux (15-150 keV)    in 0.324 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]    : 25.3927  (-4.02973  5.32946)
R^2/D10^2   : 7.03291E-02  (-0.0307225   0.0495931)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          69.63 using 59 PHA bins.
# Reduced chi-squared =          1.222 for     57 degrees of freedom 
# Null hypothesis probability =   1.216777e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.531e-09   6.682e-10
25- 50  1.447e-08   3.412e-09
50-150  6.904e-08   1.552e-08
15-150  8.604e-08   1.675e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.998       (      )
Norm        : 11.6708       (-11.6708     -11.6708)
------------------------------------------------------------
# Chi-Squared =          87.11 using 59 PHA bins.
# Reduced chi-squared =          1.528 for     57 degrees of freedom 
# Null hypothesis probability =   6.280203e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.414e-09   5.247e-09
25- 50  1.811e-08   1.014e-08
50-150  3.972e-08   2.213e-08
15-150  6.724e-08   3.729e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.89174        (-2.50225      4.51026)
R1^2/D10^2  : 1.90933        (-1.57787      7.63001)
kT2 [keV]   : 33.5360        (-7.31127      18.0256)
R2^2/D10^2  : 2.76276E-02    (-0.0195667   0.0342328)
------------------------------------------------------------
# Chi-Squared =          59.85 using 59 PHA bins.
# Reduced chi-squared =          1.088 for     55 degrees of freedom 
# Null hypothesis probability =   3.040095e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.110e-09   3.546e-09
25- 50  1.561e-08   7.430e-09
50-150  7.222e-08   3.822e-08
15-150  9.394e-08   4.996e-08
Plot creation:
Sun Jan 17 21:44:23 EST 2010