batgrbproduct Analysis for Trigger=360137

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Mon Aug 17 03:06:09 EDT 2009
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger360137/GCN5_download_cron
======================================================================

  Trigger: 00360137      Segment: 000

  BAT Trigger Time: 272143303.616   [s; MET]
      Trigger Stop: 272143304.64   [s; MET]
               UTC: 2009-08-16T19:21:38.612620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 288.347595157943   Dec: 41.4064048449191  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    5.61
     Image Trigger?:     NO
     Rate S/N Ratio:     6  [ if not an image trigger ]
     Image S/N Ratio:    5.61

  Flight Position:   [ source = BAT ]
    RA: 288.347595157943   Dec: 41.4064048449191  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 288.372325135652   Dec: 41.3985097381525  [deg; J2000]  
        { 19h 13m 29.4s , +41d 23' 54.6" }
         +/- 2.95286242325328 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.72195170371683 [arcmin] (formal 1-sigma fit error)
    SNR: 6.47652969454852
 
  Angular difference between Flight and Ground position is 1.209588 arcmin
 
  Partial Coding Fraction: 0.875    [ including projection effects ]

  Duration
     T90: 1.02400004863739 +/- 0.325650151505242
        Measured from: -0.1839998960495
                   to: 0.840000152587891     [s; relative to TRIGTIME]
     T50: 0.575999975204468 +/- 0.320000016689304
        Measured from: 0.104000151157379
                   to: 0.680000126361847     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.195999979972839     
                   to: 0.804000020027161     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.23199999332428     
                   to: 0.967999994754791     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.011745   0.032182   0.016883   0.002517
           0.006501   0.006788   0.005752   0.004740 [error]
 Peak      0.013130   0.028172   0.014601   0.000792
           0.005853   0.006203   0.005285   0.004375 [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 5.18e-09 9.27e-09 1.27e-08 3.63e-08 3.67e-08 6.35e-08   erg/cm2
              Error 2.30e-09 2.85e-09 5.11e-09 2.97e-08 1.27e-08 3.45e-08   erg/cm2
Peak flux Power-law 1.51e-01 1.49e-01 1.03e-01 1.13e-01 4.49e-01 5.17e-01   ph/cm2/s
              Error 6.73e-02 4.60e-02 4.00e-02 8.43e-02 1.36e-01 1.60e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.24e-09 1.21e-08 1.19e-08 2.53e-09 3.04e-08 3.07e-08   erg/cm2
              Error 2.51e-09 4.52e-09 9.47e-09 1.87e-08 1.31e-08 2.36e-08   erg/cm2
Peak flux Cutoff-PL 1.21e-01 1.94e-01 9.96e-02 1.06e-02 4.25e-01 4.25e-01   ph/cm2/s
              Error 7.28e-02 7.32e-02 7.77e-02 5.86e-02 1.36e-01 1.41e-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    1.541    0.475    -      -           3.25e-03 1.04e-03   59.820 57
CPL  -0.688    3.264      51.5  246.0      5.94e-02 8.99e+00   56.970 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.530    0.470    -      -           3.56e-03 1.13e-03   55.660 57
CPL  -0.729    0.769      51.2  209.2      6.83e-02 9.61e+00   52.790 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    1.200   -0.232    0.968
T90     1.024   -0.184    0.840
T50     0.576    0.104    0.680
Peak    1.000   -0.196    0.804

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  288.3723 +41.3985 0.0296   14.7  -79.9       0.0764     6.5  TRIG_00360137       
------------------------------------------
 
Foreground time interval of the image:
 -0.232   0.968 (delta_t =   1.200 [sec])
Background time interval of the image:
-34.415  -0.232 (delta_t =  34.183 [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   -0.232 sec. to    0.968 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54073     ( -0.466046   0.483873 )
Norm@50keV  : 3.25041E-03    ( -0.00104782   0.00103121 )
------------------------------------------------------------
# Chi-Squared =          59.82 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     57 degrees of freedom 
# Null hypothesis probability =   3.736843e-01
 
Photon flux (15-150 keV)    in 1.2 sec: 0.410281 ( -0.124921  0.125144 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.6747e-08 ( -1.2416e-08  1.29222e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.232 sec. to    0.968 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.687622     ( -4.25773   2.26998 )
Epeak [keV] : 51.5387      ( -16.5804 475.351 )
Norm@50keV  : 5.94052E-02    ( -0.061769   17.9271 )
------------------------------------------------------------
# Chi-Squared =          56.97 using 59 PHA bins.
# Reduced chi-squared =          1.017 for     56 degrees of freedom 
# Null hypothesis probability =   4.388561e-01
 
Photon flux (15-150 keV)    in 1.2 sec: 0.389239 ( -0.123392  0.126311 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.04424e-08 ( -1.17368e-08  1.44121e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.232 sec. to    0.968 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98432   ( -133.812   -123.812 )
beta        : -2.40776    ( -3.42906   0.875127 )
Epeak [keV] : 35.0905      ( -9.85358 10.3376 )
Norm@50keV   : 55.2150    ( -55.2153   20.3957 )
------------------------------------------------------------
# Chi-Squared =          55.34 using 59 PHA bins.
# Reduced chi-squared =          1.006 for     55 degrees of freedom 
# Null hypothesis probability =   4.618384e-01
 
Photon flux (15-150 keV)    in 1.2 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]    : 11.6337  (-2.8043  4.13148)
R^2/D10^2   : 0.139205  (-0.0941964   0.240001)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          52.53 using 59 PHA bins.
# Reduced chi-squared =         0.9217 for     57 degrees of freedom 
# Null hypothesis probability =   6.431097e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.179e-09   2.257e-09
25- 50  1.267e-08   7.393e-09
50-150  1.010e-08   6.759e-09
15-150  2.695e-08   1.601e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 123.503       (      )
Norm        : 1.99669       (-0.610359     0.849833)
------------------------------------------------------------
# Chi-Squared =          54.76 using 59 PHA bins.
# Reduced chi-squared =         0.9608 for     57 degrees of freedom 
# Null hypothesis probability =   5.594315e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.006e-09   3.101e-09
25- 50  9.568e-09   5.660e-09
50-150  2.061e-08   1.260e-08
15-150  3.519e-08   2.153e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 23.9648        (      )
R1^2/D10^2  : 3.64174E-03        (-0.00362334      0.341759)
kT2 [keV]   : 9.72742        (-9.73094      8.06908)
R2^2/D10^2  : 0.208740    (-0.208725   -0.208725)
------------------------------------------------------------
# Chi-Squared =          52.08 using 59 PHA bins.
# Chi-Squared =          52.05 using 59 PHA bins.
# Reduced chi-squared =         0.9470 for     55 degrees of freedom 
# Reduced chi-squared =         0.9463 for     55 degrees of freedom 
# Null hypothesis probability =   5.867618e-01
# Null hypothesis probability =   5.882426e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.552e-09   5.130e-09
25- 50  1.214e-08   1.661e-08
50-150  1.353e-08   2.343e-08
15-150  3.022e-08   3.445e-08

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -0.200 sec. to    0.808 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52982     ( -0.461465   0.479057 )
Norm@50keV  : 3.56493E-03    ( -0.00114221   0.00112405 )
------------------------------------------------------------
# Chi-Squared =          55.66 using 59 PHA bins.
# Reduced chi-squared =         0.9765 for     57 degrees of freedom 
# Null hypothesis probability =   5.253822e-01
 
Photon flux (15-150 keV)    in 1.008 sec: 0.448627 ( -0.13544  0.135622 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.39162e-08 ( -1.1421e-08  1.18956e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.200 sec. to    0.808 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.729372     ( 0.77036   2.30891 )
Epeak [keV] : 51.1621      ( -15.9207 402.393 )
Norm@50keV  : 6.82640E-02    ( -0.0776749   19.1437 )
------------------------------------------------------------
# Chi-Squared =          52.79 using 59 PHA bins.
# Reduced chi-squared =         0.9426 for     56 degrees of freedom 
# Null hypothesis probability =   5.972810e-01
 
Photon flux (15-150 keV)    in 1.008 sec: 0.424953 ( -0.134549  0.137588 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.76522e-08 ( -1.03378e-08  1.35494e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.200 sec. to    0.808 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97517   ( -88.9259   -78.9261 )
beta        : -2.37911    ( -5.42626   0.876194 )
Epeak [keV] : 35.2143      ( -11.2544 11.0428 )
Norm@50keV   : 57.8376    ( -10.3406   24.3067 )
------------------------------------------------------------
# Chi-Squared =          51.34 using 59 PHA bins.
# Reduced chi-squared =         0.9335 for     55 degrees of freedom 
# Null hypothesis probability =   6.151504e-01
 
Photon flux (15-150 keV)    in 1.008 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]    : 11.3679  (-2.68089  3.96292)
R^2/D10^2   : 0.156139  (-0.10504   0.260423)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          55.82 using 59 PHA bins.
# Reduced chi-squared =         0.9792 for     57 degrees of freedom 
# Null hypothesis probability =   5.195435e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.240e-09   2.368e-09
25- 50  1.250e-08   7.338e-09
50-150  9.353e-09   6.251e-09
15-150  2.609e-08   1.488e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 119.305       (-51.706      -100.313)
Norm        : 2.06239       (-0.63504     0.885167)
------------------------------------------------------------
# Chi-Squared =          58.46 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     57 degrees of freedom 
# Null hypothesis probability =   4.215162e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.373e-09   1.832e-09
25- 50  9.603e-09   3.300e-09
50-150  1.709e-08   5.095e-09
15-150  3.206e-08   1.016e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 26.1431        (-25.9825      -25.9825)
R1^2/D10^2  : 2.40851E-03        (-0.00253091      0.379291)
kT2 [keV]   : 9.87869        (-9.83564      5.04816)
R2^2/D10^2  : 0.216382    (-0.2189   -0.2189)
------------------------------------------------------------
# Chi-Squared =          55.35 using 59 PHA bins.
# Reduced chi-squared =          1.006 for     55 degrees of freedom 
# Null hypothesis probability =   4.615085e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.561e-09   3.156e-09
25- 50  1.208e-08   1.143e-08
50-150  1.341e-08   1.442e-08
15-150  3.006e-08   2.744e-08
Plot creation:
Mon Aug 17 03:22:43 EDT 2009