batgrbproduct Analysis for Trigger=420247

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.45
    Process Start Time (local time): Sat Apr 24 06:01:21 EDT 2010
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger420247/GCN5_download_cron
======================================================================

  Trigger: 00420247      Segment: 000

  BAT Trigger Time: 293675704.896   [s; MET]
      Trigger Stop: 293675705.92   [s; MET]
               UTC: 2010-04-23T00:34:59.164220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 136.477016071933   Dec: 21.4794761790139  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    21.49
     Image Trigger?:     NO
     Rate S/N Ratio:     116.228223766863  [ if not an image trigger ]
     Image S/N Ratio:    21.49

  Flight Position:   [ source = BAT ]
    RA: 136.477016071933   Dec: 21.4794761790139  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 136.472703954005   Dec: 21.4805623590246  [deg; J2000]  
        { 09h 05m 53.4s , +21d 28' 50.0" }
         +/- 0.659559380088711 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.239442025991205 [arcmin] (formal 1-sigma fit error)
    SNR: 55.1222698232986
 
  Angular difference between Flight and Ground position is 0.249422 arcmin
 
  Partial Coding Fraction: 0.7421875    [ including projection effects ]

  Duration
     T90: 114.991999983788 +/- 15.8193183058926
        Measured from: 0.156000077724457
                   to: 115.148000061512     [s; relative to TRIGTIME]
     T50: 47.379999935627 +/- 2.09261557873065
        Measured from: 4.90000009536743
                   to: 52.2800000309944     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.155999958515167     
                   to: 1.15599995851517     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.01600003242493     
                   to: 161.867999970913     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.451022   3.753465   4.139079   1.760332
           0.091992   0.100502   0.099802   0.107699 [error]
 Peak      0.131916   0.260205   0.382145   0.173062
           0.008402   0.010625   0.012421   0.011725 [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 6.96e-07 1.66e-06 3.15e-06 1.45e-05 8.53e-06 2.00e-05   erg/cm2
              Error 4.52e-08 6.12e-08 1.01e-07 1.16e-06 2.61e-07 1.19e-06   erg/cm2
Peak flux Power-law 1.21e+00 1.95e+00 2.37e+00 5.67e+00 7.15e+00 1.12e+01   ph/cm2/s
              Error 9.59e-02 9.31e-02 9.25e-02 4.93e-01 2.62e-01 5.28e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.96e-07 1.66e-06 3.15e-06 1.44e-05 8.53e-06 1.99e-05   erg/cm2
              Error 4.52e-08 6.13e-08 1.01e-07 1.15e-06 2.62e-07 1.18e-06   erg/cm2
Peak flux Cutoff-PL 1.19e+00 1.95e+00 2.39e+00 5.32e+00 7.14e+00 1.08e+01   ph/cm2/s
              Error 1.16e-01 9.67e-02 1.04e-01 1.00e+00 2.60e-01 1.02e+00   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    1.077    0.056    -      -           4.94e-03 1.43e-04   44.320 57
CPL   1.071    0.000    10000.0    0.0      4.97e-03 1.43e-04   44.470 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.716    0.065    -      -           6.19e-02 2.32e-03   49.560 57
CPL   0.687    0.181    2685.1    0.0      6.37e-02 1.14e-02   49.440 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: 51.200000 sec.
T50 in the 50-300 keV band: 25.472000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  163.884   -2.016  161.868
T90   114.992    0.156  115.148
T50    47.380    4.900   52.280
Peak    1.000    0.156    1.156

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  136.4727 +21.4806 0.0035   32.3  179.5      12.3230    55.1  TRIG_00420247       
------------------------------------------
 
Foreground time interval of the image:
 -2.016 114.705 (delta_t = 116.721 [sec])
Background time interval of the image:
-179.896 -14.616 (delta_t = 165.280 [sec])
-13.896  -2.016 (delta_t =  11.880 [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   -2.016 sec. to  161.868 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07654     ( -0.056396   0.0559934 )
Norm@50keV  : 4.94158E-03    ( -0.000142916   0.000142603 )
------------------------------------------------------------
# Chi-Squared =          44.32 using 59 PHA bins.
# Reduced chi-squared =         0.7776 for     57 degrees of freedom 
# Null hypothesis probability =   8.897384e-01
 
Photon flux (15-150 keV)    in 163.9 sec: 0.571959 ( -0.017309  0.0173823 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.5325e-06 ( -2.60837e-07  2.61953e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.016 sec. to  161.868 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07119     (     )
Epeak [keV] : 10000.00      (   )
Norm@50keV  : 4.96842E-03    ( -0.000143334   0.000143048 )
------------------------------------------------------------
# Chi-Squared =          44.47 using 59 PHA bins.
# Reduced chi-squared =         0.7941 for     56 degrees of freedom 
# Null hypothesis probability =   8.665879e-01
 
Photon flux (15-150 keV)    in 163.9 sec: 0.571686 ( -0.0173  0.017375 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.53393e-06 ( -2.61011e-07  2.62043e-07 ) ergs/cm2
 
Band function
Time interval is from   -2.016 sec. to  161.868 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.79732   ( -11.3877   -11.3877 )
beta        : -1.08266    ( -0.0607923   0.0553924 )
Epeak [keV] : 21.8194      ( -21.8194 4.70563 )
Norm@50keV   : 544.799    ( -39.9298   6554.82 )
------------------------------------------------------------
# Chi-Squared =          43.85 using 59 PHA bins.
# Reduced chi-squared =         0.7972 for     55 degrees of freedom 
# Null hypothesis probability =   8.600371e-01
 
Photon flux (15-150 keV)    in 163.9 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]    : 22.2069  (  )
R^2/D10^2   : 1.87568E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         296.74 using 59 PHA bins.
# Reduced chi-squared =         5.2060 for     57 degrees of freedom 
# Null hypothesis probability =   4.025599e-34
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.794e-07   1.680e-08
25- 50  1.485e-06   6.630e-08
50-150  5.474e-06   2.508e-07
15-150  7.239e-06   2.557e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 2.42271       (     )
------------------------------------------------------------
# Chi-Squared =         266.62 using 59 PHA bins.
# Reduced chi-squared =         4.6776 for     57 degrees of freedom 
# Null hypothesis probability =   7.550609e-29
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.888e-07   5.065e-07
25- 50  1.902e-06   9.711e-07
50-150  4.172e-06   2.130e-06
15-150  7.062e-06   3.600e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.05116        (-0.853999      1.36891)
R1^2/D10^2  : 0.296551        (-0.113982      0.137892)
kT2 [keV]   : 38.0418        (-3.99296      8.49199)
R2^2/D10^2  : 3.16247E-03    (-0.00136383   0.00125586)
------------------------------------------------------------
# Chi-Squared =          51.51 using 59 PHA bins.
# Reduced chi-squared =         0.9366 for     55 degrees of freedom 
# Null hypothesis probability =   6.086145e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.727e-07   8.752e-08
25- 50  1.687e-06   1.533e-07
50-150  6.317e-06   1.193e-06
15-150  8.676e-06   1.463e-06

Peak spectrum fit

Power-law model
Time interval is from    0.156 sec. to    1.156 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.715802     ( -0.0655104   0.0646992 )
Norm@50keV  : 6.19332E-02    ( -0.00232941   0.00231992 )
------------------------------------------------------------
# Chi-Squared =          49.56 using 59 PHA bins.
# Reduced chi-squared =         0.8695 for     57 degrees of freedom 
# Null hypothesis probability =   7.474683e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.15038 ( -0.261889  0.26192 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.5064e-07 ( -3.1021e-08  3.10904e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.156 sec. to    1.156 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.687048     ( -0.27419   0.0873275 )
Epeak [keV] : 2685.05      ( -1000.24 -1000.24 )
Norm@50keV  : 6.37433E-02    ( -0.00357183   0.0191961 )
------------------------------------------------------------
# Chi-Squared =          49.44 using 59 PHA bins.
# Reduced chi-squared =         0.8829 for     56 degrees of freedom 
# Null hypothesis probability =   7.197546e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.13928 ( -0.25946  0.26009 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.49443e-07 ( -1.5924e-08  3.1896e-08 ) ergs/cm2
 
Band function
Time interval is from    0.156 sec. to    1.156 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99998   ( -92875   -92875 )
beta        : -0.726349    ( -0.0660536   0.0665691 )
Epeak [keV] : 23.3081      ( -23.3076 5.56953 )
Norm@50keV   : 4767.67    ( -4768.79   3.60337e+06 )
------------------------------------------------------------
# Chi-Squared =          49.20 using 59 PHA bins.
# Reduced chi-squared =         0.8946 for     55 degrees of freedom 
# Null hypothesis probability =   6.946390e-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]    : 26.7130  (  )
R^2/D10^2   : 0.152790  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         159.29 using 59 PHA bins.
# Reduced chi-squared =         2.7946 for     57 degrees of freedom 
# Null hypothesis probability =   1.297875e-11
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.827e-08   1.325e-09
25- 50  1.070e-07   5.920e-09
50-150  5.595e-07   3.280e-08
15-150  6.848e-07   3.060e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 25.4558       (     )
------------------------------------------------------------
# Chi-Squared =         456.79 using 59 PHA bins.
# Reduced chi-squared =         8.0138 for     57 degrees of freedom 
# Null hypothesis probability =   9.352261e-64
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.339e-08   3.270e-08
25- 50  1.219e-07   6.290e-08
50-150  2.674e-07   1.372e-07
15-150  4.527e-07   2.336e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.51798        (-1.52584      1.85674)
R1^2/D10^2  : 2.09732        (-0.880289      1.71473)
kT2 [keV]   : 41.4125        (-5.49606      9.09351)
R2^2/D10^2  : 3.98028E-02    (-0.0166529   0.0200679)
------------------------------------------------------------
# Chi-Squared =          49.91 using 59 PHA bins.
# Reduced chi-squared =         0.9074 for     55 degrees of freedom 
# Null hypothesis probability =   6.690688e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.731e-08   6.075e-09
25- 50  1.151e-07   1.341e-08
50-150  6.079e-07   6.985e-08
15-150  7.603e-07   9.015e-08
Plot creation:
Sat Apr 24 07:22:55 EDT 2010