batgrbproduct Analysis for Trigger=516997

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Mar  6 11:53:01 EST 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger516997/GCN5_download_cron
======================================================================

  Trigger: 00516997      Segment: 000

  BAT Trigger Time: 352669058.068   [s; MET]
      Trigger Stop: 352669058.132   [s; MET]
               UTC: 2012-03-05T19:37:30.107140    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 47.5464362623518   Dec: 28.4934691193433  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18.18
     Image Trigger?:     NO
     Rate S/N Ratio:     186.566342087741  [ if not an image trigger ]
     Image S/N Ratio:    18.18

  Flight Position:   [ source = BAT ]
    RA: 47.5464362623518   Dec: 28.4934691193433  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 47.5490139018006   Dec: 28.4949680401155  [deg; J2000]  
        { 03h 10m 11.8s , +28d 29' 41.9" }
         +/- 0.925678708370968 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.27727904096902 [arcmin] (formal 1-sigma fit error)
    SNR: 33.9650511865855
 
  Angular difference between Flight and Ground position is 0.162984 arcmin
 
  Partial Coding Fraction: 0.921875    [ including projection effects ]

  Duration
     T90: 0.0999999046325684 +/- 0.0160000324249268
        Measured from: 0.00400012731552124
                   to: 0.10400003194809     [s; relative to TRIGTIME]
     T50: 0.0279999375343323 +/- 0.00894429003608426
        Measured from: 0.0200001001358032
                   to: 0.0480000376701355     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.430000007152557     
                   to: 0.569999992847443     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.135999977588654     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.051692   0.099923   0.100157   0.033847
           0.003576   0.004749   0.005188   0.004107 [error]
 Peak      0.054271   0.104341   0.103649   0.031963
           0.005819   0.006675   0.006715   0.005611 [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 1.48e-08 3.70e-08 7.43e-08 3.73e-07 2.01e-07 4.98e-07   erg/cm2
              Error 1.40e-09 2.14e-09 4.68e-09 5.21e-08 1.23e-08 5.52e-08   erg/cm2
Peak flux Power-law 5.10e-01 6.77e-01 6.60e-01 1.15e+00 2.22e+00 3.00e+00   ph/cm2/s
              Error 6.78e-02 5.44e-02 5.17e-02 1.95e-01 1.52e-01 2.34e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.39e-08 3.84e-08 7.67e-08 2.24e-07 3.53e-07 0.00e+00   erg/cm2
              Error 1.67e-09 2.57e-09 5.37e-09 1.30e-07 1.30e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 4.85e-01 6.90e-01 6.76e-01 8.77e-01 2.20e+00 2.73e+00   ph/cm2/s
              Error 8.18e-02 6.06e-02 4.58e-02 3.39e-01 1.57e-01 4.19e-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    0.995    0.089    -      -           1.36e-01 7.08e-03   64.210 57
CPL   0.653    0.355     209.7 2558.0      1.99e-01 7.91e-02   61.290 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.037    0.119    -      -           1.93e-02 1.31e-03   51.700 57
CPL   0.805    0.389     278.2    0.0      2.49e-02 1.17e-02   50.910 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: 0.064000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.136    0.000    0.136
T90     0.100    0.004    0.104
T50     0.028    0.020    0.048
Peak    1.000   -0.430    0.570

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   47.5490 +28.4950 0.0057   11.3  109.6       0.2973    34.0  TRIG_00516997       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.136 (delta_t =   0.136 [sec])
Background time interval of the image:
-239.068 -26.098 (delta_t = 212.970 [sec])
-25.068   0.000 (delta_t =  25.068 [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    0.000 sec. to    0.136 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.995426     ( -0.0888868   0.0884546 )
Norm@50keV  : 0.136152    ( -0.00707993   0.00707952 )
------------------------------------------------------------
# Chi-Squared =          64.21 using 59 PHA bins.
# Reduced chi-squared =          1.126 for     57 degrees of freedom 
# Null hypothesis probability =   2.387848e-01
 
Photon flux (15-150 keV)    in 0.136 sec: 15.6716 ( -0.815211  0.815827 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.00537e-07 ( -1.22694e-08  1.23772e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.136 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.653321     ( -0.371977   0.338099 )
Epeak [keV] : 209.740      ( -82.5324 5033.41 )
Norm@50keV  : 0.199312    ( -0.059673   0.0985386 )
------------------------------------------------------------
# Chi-Squared =          61.29 using 59 PHA bins.
# Reduced chi-squared =          1.094 for     56 degrees of freedom 
# Null hypothesis probability =   2.921549e-01
 
Photon flux (15-150 keV)    in 0.136 sec: 15.4964 ( -0.8373  0.835 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.53067e-07 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.136 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.32693   ( -14.4496   -4.70754 )
beta        : -1.10893    ( -0.123254   0.122052 )
Epeak [keV] : 30.6543      ( -5.87994 47.1307 )
Norm@50keV   : 1058.32    ( -1042.88   218.508 )
------------------------------------------------------------
# Chi-Squared =          56.42 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     55 degrees of freedom 
# Null hypothesis probability =   4.215961e-01
 
Photon flux (15-150 keV)    in 0.136 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]    : 19.9055  (  )
R^2/D10^2   : 0.774317  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         116.41 using 59 PHA bins.
# Reduced chi-squared =         2.0423 for     57 degrees of freedom 
# Null hypothesis probability =   5.839116e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.059e-09   7.582e-10
25- 50  4.002e-08   2.625e-09
50-150  1.175e-07   1.133e-08
15-150  1.655e-07   1.129e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 59.8749       (     )
------------------------------------------------------------
# Chi-Squared =         155.21 using 59 PHA bins.
# Reduced chi-squared =         2.7229 for     57 degrees of freedom 
# Null hypothesis probability =   4.965227e-11
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.028e-08   1.056e-08
25- 50  3.900e-08   2.034e-08
50-150  8.555e-08   4.461e-08
15-150  1.448e-07   7.541e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.71215        (-2.15616      2.50025)
R1^2/D10^2  : 4.29786        (-1.84763      4.08337)
kT2 [keV]   : 39.5616        (-9.878      30.8495)
R2^2/D10^2  : 7.44406E-02    (-0.0575963   0.11064)
------------------------------------------------------------
# Chi-Squared =          58.92 using 59 PHA bins.
# Reduced chi-squared =          1.071 for     55 degrees of freedom 
# Null hypothesis probability =   3.340686e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.317e-08   2.802e-09
25- 50  4.050e-08   8.507e-09
50-150  1.448e-07   5.713e-08
15-150  1.985e-07   6.982e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.430 sec. to    0.570 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03694     ( -0.11996   0.118534 )
Norm@50keV  : 1.92794E-02    ( -0.00130743   0.00130732 )
------------------------------------------------------------
# Chi-Squared =          51.70 using 59 PHA bins.
# Reduced chi-squared =         0.9070 for     57 degrees of freedom 
# Null hypothesis probability =   6.736521e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.22462 ( -0.152373  0.152432 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.05813e-07 ( -1.6031e-08  1.61365e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.430 sec. to    0.570 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.805276     ( -0.488107   0.288929 )
Epeak [keV] : 278.153      ( -278.164 -278.164 )
Norm@50keV  : 2.48554E-02    ( -0.00655744   0.0167834 )
------------------------------------------------------------
# Chi-Squared =          50.91 using 59 PHA bins.
# Reduced chi-squared =         0.9091 for     56 degrees of freedom 
# Null hypothesis probability =   6.674224e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.20447 ( -0.15733  0.15706 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.91557e-07 ( -1.20391e-07  1.64939e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.430 sec. to    0.570 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99379   ( -319.425   -309.425 )
beta        : -1.12319    ( -0.140022   0.137146 )
Epeak [keV] : 28.0422      ( -8.29023 5.95957 )
Norm@50keV   : 700.999    ( -701.001   4192.09 )
------------------------------------------------------------
# Chi-Squared =          48.18 using 59 PHA bins.
# Reduced chi-squared =         0.8761 for     55 degrees of freedom 
# Null hypothesis probability =   7.306089e-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]    : 20.1401  (-1.88102  2.14221)
R^2/D10^2   : 0.103705  (-0.0281964   0.037747)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          87.53 using 59 PHA bins.
# Reduced chi-squared =          1.536 for     57 degrees of freedom 
# Null hypothesis probability =   5.766793e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.086e-09   1.201e-09
25- 50  4.047e-08   4.060e-09
50-150  1.218e-07   1.550e-08
15-150  1.703e-07   1.650e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.996       (      )
Norm        : 8.81843       (-0.62264     0.62264)
------------------------------------------------------------
# Chi-Squared =          97.76 using 59 PHA bins.
# Reduced chi-squared =          1.715 for     57 degrees of freedom 
# Null hypothesis probability =   6.340549e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.195e-08   1.151e-08
25- 50  4.223e-08   2.207e-08
50-150  9.261e-08   4.842e-08
15-150  1.568e-07   8.190e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.15360        (-2.45733      3.03443)
R1^2/D10^2  : 0.747510        (-0.39548      1.09342)
kT2 [keV]   : 38.4580        (-10.4697      40.3086)
R2^2/D10^2  : 1.14589E-02    (-0.00961532   0.0202428)
------------------------------------------------------------
# Chi-Squared =          49.79 using 59 PHA bins.
# Reduced chi-squared =         0.9052 for     55 degrees of freedom 
# Null hypothesis probability =   6.734885e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.455e-08   4.484e-09
25- 50  4.199e-08   1.212e-08
50-150  1.487e-07   6.913e-08
15-150  2.052e-07   7.931e-08
Plot creation:
Tue Mar  6 12:13:49 EST 2012