batgrbproduct Analysis for Trigger=505054

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Oct  9 14:45:15 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger505054/GCN5_download_cron
======================================================================

  Trigger: 00505054      Segment: 000

  BAT Trigger Time: 339804785.728   [s; MET]
      Trigger Stop: 339804786.752   [s; MET]
               UTC: 2011-10-08T22:12:58.280940    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 60.4541236181108   Dec: -32.688648181568  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.07
     Image Trigger?:     NO
     Rate S/N Ratio:     36.2353418639869  [ if not an image trigger ]
     Image S/N Ratio:    9.07

  Flight Position:   [ source = BAT ]
    RA: 60.4541236181108   Dec: -32.688648181568  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 60.4389516112749   Dec: -32.708122469487  [deg; J2000]  
        { 04h 01m 45.3s , -32d 42' 29.2" }
         +/- 1.22295862679132 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.504592135329186 [arcmin] (formal 1-sigma fit error)
    SNR: 22.81625857898
 
  Angular difference between Flight and Ground position is 1.397189 arcmin
 
  Partial Coding Fraction: 0.09667969    [ including projection effects ]

  Duration
     T90: 63.3919999599457 +/- 2.36485690984517
        Measured from: -1.63599985837936
                   to: 61.7560001015663     [s; relative to TRIGTIME]
     T50: 29.9839999079704 +/- 1.63381882274816
        Measured from: 1.2480001449585
                   to: 31.2320000529289     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0440000295639038     
                   to: 1.0440000295639     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.63599997758865     
                   to: 72.4639999866486     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.530463   3.332553   2.075449   0.637152
           0.115196   0.122612   0.110401   0.093310 [error]
 Peak      0.149036   0.294503   0.253683   0.111353
           0.024465   0.028084   0.027880   0.022010 [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 1.04e-06 1.54e-06 1.70e-06 3.52e-06 5.35e-06 7.79e-06   erg/cm2
              Error 8.03e-08 7.16e-08 1.13e-07 4.95e-07 2.63e-07 5.87e-07   erg/cm2
Peak flux Power-law 1.77e+00 2.06e+00 1.72e+00 2.42e+00 6.42e+00 7.97e+00   ph/cm2/s
              Error 3.64e-01 2.63e-01 2.16e-01 6.29e-01 7.31e-01 9.04e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.02e-06 1.56e-06 1.71e-06 2.84e-06 5.29e-06 7.12e-06   erg/cm2
              Error 9.53e-08 6.49e-08 1.17e-07 1.11e-06 2.95e-07 1.17e-06   erg/cm2
Peak flux Cutoff-PL 1.69e+00 2.11e+00 1.77e+00 1.84e+00 6.38e+00 7.40e+00   ph/cm2/s
              Error 4.18e-01 3.68e-01 2.54e-01 7.40e-01 1.30e+00 0.00e+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    1.860    0.086    -      -           7.74e-03 3.79e-04   46.940 57
CPL   1.725    0.338      98.7    0.0      9.09e-03 0.00e+00   46.440 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.259    0.184    -      -           5.42e-02 5.94e-03   68.250 57
CPL   1.011    0.539     212.3    0.0      7.16e-02 5.69e-02   67.820 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: 39.936000 sec.
T50 in the 50-300 keV band: 9.920000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   75.100   -2.636   72.464
T90    63.392   -1.636   61.756
T50    29.984    1.248   31.232
Peak    1.000    0.044    1.044

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   60.4390 -32.7081 0.0085   45.7  139.4       5.0342    22.8  TRIG_00505054       
------------------------------------------
 
Foreground time interval of the image:
 -2.636  11.773 (delta_t =  14.409 [sec])
Background time interval of the image:
-239.728 -172.168 (delta_t =  67.560 [sec])
-169.728 -165.678 (delta_t =   4.050 [sec])
-160.728 -125.318 (delta_t =  35.410 [sec])
-123.728  -2.636 (delta_t = 121.092 [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   -2.636 sec. to   72.464 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.85988     ( -0.0851067   0.0863678 )
Norm@50keV  : 7.74417E-03    ( -0.000379879   0.000377562 )
------------------------------------------------------------
# Chi-Squared =          46.94 using 59 PHA bins.
# Reduced chi-squared =         0.8235 for     57 degrees of freedom 
# Null hypothesis probability =   8.265118e-01
 
Photon flux (15-150 keV)    in 75.1 sec: 1.09292 ( -0.0526001  0.0527389 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.34699e-06 ( -2.62549e-07  2.63506e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.636 sec. to   72.464 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72465     ( -0.342161   0.334402 )
Epeak [keV] : 98.6564      (   )
Norm@50keV  : 9.09361E-03    (     )
------------------------------------------------------------
# Chi-Squared =          46.44 using 59 PHA bins.
# Reduced chi-squared =         0.8292 for     56 degrees of freedom 
# Null hypothesis probability =   8.151617e-01
 
Photon flux (15-150 keV)    in 75.1 sec: 1.08396 ( -0.05635  0.02833 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.29211e-06 ( -2.9699e-07  2.92447e-07 ) ergs/cm2
 
Band function
Time interval is from   -2.636 sec. to   72.464 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.615079   ( -1.21203   3.81197 )
beta        : -1.96284    ( -0.152428   0.127279 )
Epeak [keV] : 35.8069      ( -10.4497 38.7961 )
Norm@50keV   : 4.94655E-02    ( -0.0663162   48.5374 )
------------------------------------------------------------
# Chi-Squared =          43.13 using 59 PHA bins.
# Reduced chi-squared =         0.7843 for     55 degrees of freedom 
# Null hypothesis probability =   8.769498e-01
 
Photon flux (15-150 keV)    in 75.1 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]    : 11.9963  (  )
R^2/D10^2   : 0.248899  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         173.51 using 59 PHA bins.
# Reduced chi-squared =         3.0440 for     57 degrees of freedom 
# Null hypothesis probability =   1.072084e-13
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.690e-07   4.758e-08
25- 50  1.790e-06   9.876e-08
50-150  1.549e-06   1.596e-07
15-150  3.907e-06   2.122e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 98.2120       (-15.5048      20.5976)
Norm        : 4.76120       (-0.330144     0.36424)
------------------------------------------------------------
# Chi-Squared =          50.39 using 59 PHA bins.
# Reduced chi-squared =         0.8841 for     57 degrees of freedom 
# Null hypothesis probability =   7.194757e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.345e-07   8.486e-08
25- 50  1.610e-06   8.749e-08
50-150  2.582e-06   7.029e-07
15-150  5.127e-06   7.262e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.01332        (-0.785743      0.832134)
R1^2/D10^2  : 1.41106        (-0.459207      0.754662)
kT2 [keV]   : 26.9017        (-4.33257      6.70377)
R2^2/D10^2  : 8.93074E-03    (-0.00482172   0.0083661)
------------------------------------------------------------
# Chi-Squared =          43.30 using 59 PHA bins.
# Reduced chi-squared =         0.7874 for     55 degrees of freedom 
# Null hypothesis probability =   8.730292e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.200e-07   1.154e-07
25- 50  1.630e-06   1.802e-07
50-150  2.713e-06   6.083e-07
15-150  5.262e-06   7.758e-07

Peak spectrum fit

Power-law model
Time interval is from    0.044 sec. to    1.044 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25887     ( -0.184915   0.18252 )
Norm@50keV  : 5.42162E-02    ( -0.00594394   0.00594393 )
------------------------------------------------------------
# Chi-Squared =          68.25 using 59 PHA bins.
# Reduced chi-squared =          1.197 for     57 degrees of freedom 
# Null hypothesis probability =   1.462615e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.42167 ( -0.730277  0.731886 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.41336e-07 ( -6.44034e-08  6.47387e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.044 sec. to    1.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.01102     ( -0.730344   0.346887 )
Epeak [keV] : 212.327      ( -212.378 -212.378 )
Norm@50keV  : 7.16007E-02    ( -0.0266825   0.0870208 )
------------------------------------------------------------
# Chi-Squared =          67.82 using 59 PHA bins.
# Reduced chi-squared =          1.211 for     56 degrees of freedom 
# Null hypothesis probability =   1.337956e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.37550 ( -0.73909  0.74063 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.044 sec. to    1.044 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.98394   ( -130.93   -120.93 )
beta        : -1.49557    ( -0.266131   0.242716 )
Epeak [keV] : 31.8701      ( -6.67022 6.02897 )
Norm@50keV   : 1145.46    ( -1145.46   2046.61 )
------------------------------------------------------------
# Chi-Squared =          61.94 using 59 PHA bins.
# Reduced chi-squared =          1.126 for     55 degrees of freedom 
# Null hypothesis probability =   2.424772e-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]    : 17.3962  (-2.81588  3.4315)
R^2/D10^2   : 0.459581  (-0.205816   0.373827)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          88.59 using 59 PHA bins.
# Reduced chi-squared =          1.554 for     57 degrees of freedom 
# Null hypothesis probability =   4.648225e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.814e-08   6.380e-09
25- 50  1.268e-07   2.091e-08
50-150  2.759e-07   5.830e-08
15-150  4.309e-07   6.990e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.997       (      )
Norm        : 26.8153       (-26.8153     -26.8153)
------------------------------------------------------------
# Chi-Squared =          74.66 using 59 PHA bins.
# Reduced chi-squared =          1.310 for     57 degrees of freedom 
# Null hypothesis probability =   5.828643e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.675e-08   3.544e-08
25- 50  1.284e-07   6.960e-08
50-150  2.816e-07   1.509e-07
15-150  4.768e-07   2.526e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.29279        (-1.98534      1.8775)
R1^2/D10^2  : 2.78824        (-1.46186      2.49909)
kT2 [keV]   : 45.2284        (-16.2998      134.582)
R2^2/D10^2  : 1.65893E-02    (-0.0157088   0.050152)
------------------------------------------------------------
# Chi-Squared =          62.01 using 59 PHA bins.
# Reduced chi-squared =          1.127 for     55 degrees of freedom 
# Null hypothesis probability =   2.403722e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.162e-08   2.430e-08
25- 50  1.345e-07   5.810e-08
50-150  3.557e-07   1.794e-07
15-150  5.419e-07   2.484e-07
Plot creation:
Sun Oct  9 15:09:41 EDT 2011