batgrbproduct Analysis for Trigger=505646

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Oct 17 17:44:51 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger505646/GCN5_download_cron
======================================================================

  Trigger: 00505646      Segment: 000

  BAT Trigger Time: 340483032   [s; MET]
      Trigger Stop: 340483136   [s; MET]
               UTC: 2011-10-16T18:37:04.526260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 153.806002279747   Dec: 27.4756888348294  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.49
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.49

  Flight Position:   [ source = BAT ]
    RA: 153.806002279747   Dec: 27.4756888348294  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 153.825613731605   Dec: 27.4741765751893  [deg; J2000]  
        { 10h 15m 18.1s , +27d 28' 27.0" }
         +/- 2.24229158773504 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.789468213170983 [arcmin] (formal 1-sigma fit error)
    SNR: 9.59687158093567
 
  Angular difference between Flight and Ground position is 1.047907 arcmin
 
  Partial Coding Fraction: 0.640625    [ including projection effects ]

  Duration
     T90: 547.483999967575 +/- 105.374638318265
        Measured from: 45.8800001144409
                   to: 593.364000082016     [s; relative to TRIGTIME]
     T50: 108.763999998569 +/- 18.1855933957083
        Measured from: 117.960000097752
                   to: 226.724000096321     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 115.227999985218     
                   to: 116.227999985218     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 35.4160000085831     
                   to: 614.480000019073     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.800997   2.586014   1.627268   0.610166
           0.130045   0.135088   0.121815   0.111890 [error]
 Peak      0.031896   0.032088   0.039114   0.008195
           0.006898   0.007402   0.006592   0.005726 [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 8.59e-07 1.20e-06 1.23e-06 2.33e-06 4.03e-06 5.62e-06   erg/cm2
              Error 8.23e-08 6.96e-08 1.23e-07 4.87e-07 2.73e-07 5.95e-07   erg/cm2
Peak flux Power-law 2.98e-01 3.01e-01 2.14e-01 2.42e-01 9.09e-01 1.06e+00   ph/cm2/s
              Error 9.61e-02 6.09e-02 5.33e-02 1.23e-01 1.76e-01 2.07e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.59e-07 1.20e-06 1.23e-06 2.31e-06 4.03e-06 5.43e-06   erg/cm2
              Error 8.21e-08 6.97e-08 1.23e-07 4.88e-07 2.73e-07 8.04e-07   erg/cm2
Peak flux Cutoff-PL 2.68e-01 3.14e-01 2.26e-01 1.50e-01 8.91e-01 9.62e-01   ph/cm2/s
              Error 1.20e-01 7.04e-02 6.36e-02 1.80e-01 1.82e-01 2.56e-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 2.66e-01 3.15e-01 9.55e-01 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 1.16e-01 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    1.955    0.122    -      -           7.63e-04 5.34e-05   43.680 57
CPL   2.086    0.000      39.6    0.0      6.46e-04 0.00e+00   42.710 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.493    0.335    -      -           7.29e-03 1.45e-03   48.760 57
CPL   0.991    1.522     107.1    0.0      1.27e-02 3.20e-02   48.310 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: 206.528000 sec.
T50 in the 50-300 keV band: 83.328000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  579.064   35.416  614.480
T90   547.484   45.880  593.364
T50   108.764  117.960  226.724
Peak    1.000  115.228  116.228

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  153.8256 +27.4742 0.0200   32.2   15.5       1.2089     9.6  TRIG_00505646       
------------------------------------------
 
Foreground time interval of the image:
 35.416 110.701 (delta_t =  75.285 [sec])
Background time interval of the image:
-239.000  35.416 (delta_t = 274.416 [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
Multiple GTIs in the spectrum
tstart tstop
35.416000 176.300000
177.000000 248.270000
249.000000 501.610000
504.000000 507.460000
509.000000 614.480000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95510     ( -0.120222   0.123308 )
Norm@50keV  : 7.63296E-04    ( -5.38003e-05   5.29517e-05 )
------------------------------------------------------------
# Chi-Squared =          43.68 using 59 PHA bins.
# Reduced chi-squared =         0.7662 for     57 degrees of freedom 
# Null hypothesis probability =   9.027191e-01
 
Photon flux (15-150 keV)    in 573.7 sec: 0.112194 ( -0.00672358  0.0067482 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.03054e-06 ( -2.71591e-07  2.7448e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
35.416000 176.300000
177.000000 248.270000
249.000000 501.610000
504.000000 507.460000
509.000000 614.480000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.08575     (     )
Epeak [keV] : 39.5605      (   )
Norm@50keV  : 6.45838E-04    (     )
------------------------------------------------------------
# Chi-Squared =          42.71 using 59 PHA bins.
# Reduced chi-squared =         0.7627 for     56 degrees of freedom 
# Null hypothesis probability =   9.043843e-01
 
Photon flux (15-150 keV)    in 573.7 sec: 0.112140 ( -0.006688  0.006677 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.02979e-06 ( -2.70867e-07  2.74842e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
35.416000 176.300000
177.000000 248.270000
249.000000 501.610000
504.000000 507.460000
509.000000 614.480000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.51044   ( 1.50727   1.50727 )
beta        : -1.95734    ( 1.9573   0.121966 )
Epeak [keV] : 21.3685      ( -21.3294 -21.3294 )
Norm@50keV   : 1.81735E-03    ( -0.00113466   0 )
------------------------------------------------------------
# Chi-Squared =          43.66 using 59 PHA bins.
# Reduced chi-squared =         0.7937 for     55 degrees of freedom 
# Null hypothesis probability =   8.647073e-01
 
Photon flux (15-150 keV)    in 573.7 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]    : 10.7104  (  )
R^2/D10^2   : 3.75444E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         138.06 using 59 PHA bins.
# Reduced chi-squared =         2.4221 for     57 degrees of freedom 
# Null hypothesis probability =   1.122646e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.133e-07   5.450e-08
25- 50  1.402e-06   9.036e-08
50-150  8.894e-07   1.449e-07
15-150  2.804e-06   1.842e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 80.7209       (-16.1827      23.2368)
Norm        : 0.511218       (-0.0497737     0.0581133)
------------------------------------------------------------
# Chi-Squared =          53.94 using 59 PHA bins.
# Reduced chi-squared =         0.9464 for     57 degrees of freedom 
# Null hypothesis probability =   5.904710e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.615e-07   6.856e-08
25- 50  1.256e-06   7.515e-08
50-150  1.784e-06   2.777e-07
15-150  3.802e-06   2.960e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.35892        (-0.921848      1.088)
R1^2/D10^2  : 0.422828        (-0.214916      0.51068)
kT2 [keV]   : 22.2251        (-4.20053      7.04385)
R2^2/D10^2  : 1.91744E-03    (-0.00118755   0.00231513)
------------------------------------------------------------
# Chi-Squared =          49.07 using 59 PHA bins.
# Reduced chi-squared =         0.8922 for     55 degrees of freedom 
# Null hypothesis probability =   6.994248e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.724e-07   1.626e-07
25- 50  1.129e-06   1.687e-07
50-150  1.999e-06   5.290e-07
15-150  4.000e-06   8.198e-07

Peak spectrum fit

Power-law model
Time interval is from  115.228 sec. to  116.228 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49343     ( -0.327999   0.341569 )
Norm@50keV  : 7.29143E-03    ( -0.00145596   0.00143491 )
------------------------------------------------------------
# Chi-Squared =          48.76 using 59 PHA bins.
# Reduced chi-squared =         0.8554 for     57 degrees of freedom 
# Null hypothesis probability =   7.731117e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.908659 ( -0.17569  0.176042 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.92448e-08 ( -1.50183e-08  1.52578e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  115.228 sec. to  116.228 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.990822     ( -1.64314   1.40056 )
Epeak [keV] : 107.072      ( -107.099 -107.099 )
Norm@50keV  : 1.27427E-02    ( -0.00676241   0.057332 )
------------------------------------------------------------
# Chi-Squared =          48.31 using 59 PHA bins.
# Reduced chi-squared =         0.8626 for     56 degrees of freedom 
# Null hypothesis probability =   7.578430e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.890951 ( -0.183414  0.181359 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.78001e-08 ( -1.53602e-08  1.5703e-08 ) ergs/cm2
 
Band function
Time interval is from  115.228 sec. to  116.228 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.926698   ( 0.926974   1.55115 )
beta        : -9.36553    ( 9.99712   19.9971 )
Epeak [keV] : 101.513      ( -44.48 -101.69 )
Norm@50keV   : 1.36323E-02    ( -0.0076317   0 )
------------------------------------------------------------
# Chi-Squared =          48.31 using 59 PHA bins.
# Reduced chi-squared =         0.8784 for     55 degrees of freedom 
# Null hypothesis probability =   7.261277e-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]    : 17.0299  (-3.42268  4.41776)
R^2/D10^2   : 6.86706E-02  (-0.0378051   0.079787)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          53.00 using 59 PHA bins.
# Reduced chi-squared =         0.9298 for     57 degrees of freedom 
# Null hypothesis probability =   6.259797e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.054e-09   1.609e-09
25- 50  1.796e-08   6.159e-09
50-150  3.722e-08   1.544e-08
15-150  5.923e-08   2.023e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-102.911      -199.995)
Norm        : 3.73192       (-0.7098     0.71057)
------------------------------------------------------------
# Chi-Squared =          48.59 using 59 PHA bins.
# Reduced chi-squared =         0.8524 for     57 degrees of freedom 
# Null hypothesis probability =   7.785062e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.293e-09   5.195e-09
25- 50  1.788e-08   1.009e-08
50-150  3.920e-08   2.192e-08
15-150  6.637e-08   3.797e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.33515        (-1.7498      2.86715)
R1^2/D10^2  : 19.7220        (-18.6823      3193.99)
kT2 [keV]   : 20.2828        (-4.54235      7.15158)
R2^2/D10^2  : 3.45731E-02    (-0.0226295   0.0495514)
------------------------------------------------------------
# Chi-Squared =          44.87 using 59 PHA bins.
# Reduced chi-squared =         0.8158 for     55 degrees of freedom 
# Null hypothesis probability =   8.334463e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.640e-09   5.373e-09
25- 50  1.514e-08   7.983e-09
50-150  4.188e-08   2.546e-08
15-150  6.667e-08   3.568e-08
Plot creation:
Mon Oct 17 18:06:36 EDT 2011