batgrbproduct Analysis for Trigger=458059

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Jul 26 19:04:05 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger458059/GCN5_download_cron
======================================================================

  Trigger: 00458059      Segment: 000

  BAT Trigger Time: 333336647.744   [s; MET]
      Trigger Stop: 333336648.768   [s; MET]
               UTC: 2011-07-26T01:30:40.549800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 286.750618690009   Dec: 56.0532972548459  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.6
     Image Trigger?:     NO
     Rate S/N Ratio:     10.6770782520313  [ if not an image trigger ]
     Image S/N Ratio:    8.6

  Flight Position:   [ source = BAT ]
    RA: 286.750618690009   Dec: 56.0532972548459  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 286.713320525394   Dec: 56.0697401511558  [deg; J2000]  
        { 19h 06m 51.2s , +56d 04' 11.1" }
         +/- 1.6649802257252 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.695797408410499 [arcmin] (formal 1-sigma fit error)
    SNR: 14.6831655145219
 
  Angular difference between Flight and Ground position is 1.591973 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 5.15599995851517 +/- 1.1073066621986
        Measured from: -0.579999923706055
                   to: 4.57600003480911     [s; relative to TRIGTIME]
     T50: 1.67999994754791 +/- 0.584564757078561
        Measured from: 0.656000077724457
                   to: 2.33600002527237     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.611999988555908     
                   to: 1.61199998855591     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.864000022411346     
                   to: 5.01199996471405     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.150568   0.202842   0.103416  -0.010571
           0.015323   0.015973   0.014201   0.013447 [error]
 Peak      0.031688   0.064986   0.031694  -0.006379
           0.006508   0.006909   0.005851   0.005530 [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 4.77e-08 7.05e-08 7.77e-08 1.61e-07 2.45e-07 3.57e-07   erg/cm2
              Error 6.54e-09 6.96e-09 1.29e-08 5.25e-08 2.99e-08 6.66e-08   erg/cm2
Peak flux Power-law 3.66e-01 3.38e-01 2.16e-01 2.12e-01 1.01e+00 1.13e+00   ph/cm2/s
              Error 7.87e-02 5.06e-02 4.56e-02 8.49e-02 1.50e-01 1.76e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.29e-08 8.11e-08 7.32e-08 2.79e-08 2.18e-07 2.25e-07   erg/cm2
              Error 7.42e-09 9.74e-09 1.59e-08 3.89e-08 3.17e-08 4.67e-08   erg/cm2
Peak flux Cutoff-PL 3.00e-01 4.20e-01 2.12e-01 2.79e-02 9.56e-01 9.59e-01   ph/cm2/s
              Error 9.04e-02 7.42e-02 6.07e-02 4.55e-02 1.51e-01 1.54e-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    1.859    0.178    -      -           4.54e-03 5.50e-04   87.700 57
CPL   0.638    0.867      46.5   11.8      2.29e-02 3.71e-02   79.840 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.646    0.241    -      -           7.73e-03 1.29e-03   75.300 57
CPL  -0.324    1.475      50.0   13.8      1.02e-01 5.23e-01   66.280 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    5.876   -0.864    5.012
T90     5.156   -0.580    4.576
T50     1.680    0.656    2.336
Peak    1.000    0.612    1.612

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  286.7133 +56.0697 0.0131    9.5 -163.6       0.4342    14.7  TRIG_00458059       
------------------------------------------
 
Foreground time interval of the image:
 -0.864   5.012 (delta_t =   5.876 [sec])
Background time interval of the image:
-239.744 -68.714 (delta_t = 171.030 [sec])
-67.744  -0.864 (delta_t =  66.880 [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   -0.864 sec. to    5.012 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.85876     ( -0.173694   0.182241 )
Norm@50keV  : 4.53617E-03    ( -0.000555105   0.000545824 )
------------------------------------------------------------
# Chi-Squared =          87.70 using 59 PHA bins.
# Reduced chi-squared =          1.539 for     57 degrees of freedom 
# Null hypothesis probability =   5.569738e-03
 
Photon flux (15-150 keV)    in 5.876 sec: 0.639887 ( -0.0627799  0.0627808 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.45064e-07 ( -2.95777e-08  3.0321e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.864 sec. to    5.012 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.637926     ( -0.955635   0.779203 )
Epeak [keV] : 46.5348      ( -8.11011 15.5608 )
Norm@50keV  : 2.28536E-02    ( -0.0145712   0.0595503 )
------------------------------------------------------------
# Chi-Squared =          79.84 using 59 PHA bins.
# Reduced chi-squared =          1.426 for     56 degrees of freedom 
# Null hypothesis probability =   1.990600e-02
 
Photon flux (15-150 keV)    in 5.876 sec: 0.612647 ( -0.063994  0.064323 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.17843e-07 ( -3.0349e-08  3.29538e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.864 sec. to    5.012 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.637783   ( -0.612775   1.19076 )
beta        : -10.00000    ( 2.77056e+08   2.77056e+08 )
Epeak [keV] : 46.5249      ( -8.10852 15.5591 )
Norm@50keV   : 2.28585E-02    ( -0.0145774   0.0596205 )
------------------------------------------------------------
# Chi-Squared =          79.84 using 59 PHA bins.
# Reduced chi-squared =          1.452 for     55 degrees of freedom 
# Null hypothesis probability =   1.596404e-02
 
Photon flux (15-150 keV)    in 5.876 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]    : 10.5988  (-1.15319  1.31255)
R^2/D10^2   : 0.247848  (-0.0876553   0.133314)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          90.90 using 59 PHA bins.
# Reduced chi-squared =          1.595 for     57 degrees of freedom 
# Null hypothesis probability =   2.880776e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.390e-08   5.435e-09
25- 50  9.130e-08   1.137e-08
50-150  5.625e-08   1.426e-08
15-150  1.814e-07   2.212e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 79.4996       (-21.7346      37.1462)
Norm        : 3.03726       (-0.408961     0.491762)
------------------------------------------------------------
# Chi-Squared =          81.77 using 59 PHA bins.
# Reduced chi-squared =          1.434 for     57 degrees of freedom 
# Null hypothesis probability =   1.743672e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.629e-08   6.969e-09
25- 50  7.609e-08   8.373e-09
50-150  1.070e-07   4.580e-08
15-150  2.293e-07   4.745e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.25884        (-2.22895      2.10636)
R1^2/D10^2  : 1.02701        (-0.607547      3.49896)
kT2 [keV]   : 17.1869        (-4.39918      8.5831)
R2^2/D10^2  : 2.78270E-02    (-0.0231375   0.0762063)
------------------------------------------------------------
# Chi-Squared =          79.00 using 59 PHA bins.
# Reduced chi-squared =          1.436 for     55 degrees of freedom 
# Null hypothesis probability =   1.865448e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.310e-08   2.350e-08
25- 50  8.012e-08   4.054e-08
50-150  9.657e-08   5.538e-08
15-150  2.198e-07   1.138e-07

Peak spectrum fit

Power-law model
Time interval is from    0.612 sec. to    1.612 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64592     ( -0.236552   0.244918 )
Norm@50keV  : 7.72778E-03    ( -0.001296   0.0012783 )
------------------------------------------------------------
# Chi-Squared =          75.30 using 59 PHA bins.
# Reduced chi-squared =          1.321 for     57 degrees of freedom 
# Null hypothesis probability =   5.265266e-02
 
Photon flux (15-150 keV)    in 1 sec: 1.00770 ( -0.150355  0.150367 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.19114e-08 ( -1.26337e-08  1.30088e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.612 sec. to    1.612 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.323824     ( -1.73135   1.21784 )
Epeak [keV] : 49.9933      ( -8.96 18.6906 )
Norm@50keV  : 0.102204    ( -0.1025   0.943501 )
------------------------------------------------------------
# Chi-Squared =          66.28 using 59 PHA bins.
# Reduced chi-squared =          1.184 for     56 degrees of freedom 
# Null hypothesis probability =   1.635503e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.956292 ( -0.14997  0.151078 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.07602e-08 ( -1.18339e-08  1.34258e-08 ) ergs/cm2
 
Band function
Time interval is from    0.612 sec. to    1.612 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.326232   ( -1.1113   -0.255197 )
beta        : -10.00000    ( 2.06092e+06   2.06093e+06 )
Epeak [keV] : 49.9673      ( -8.99684 18.683 )
Norm@50keV   : 0.102585    ( -0.102584   0.945581 )
------------------------------------------------------------
# Chi-Squared =          66.28 using 59 PHA bins.
# Reduced chi-squared =          1.205 for     55 degrees of freedom 
# Null hypothesis probability =   1.417405e-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]    : 11.8624  (-1.68741  2.05753)
R^2/D10^2   : 0.276722  (-0.123583   0.20913)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          67.97 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     57 degrees of freedom 
# Null hypothesis probability =   1.515526e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.227e-09   2.228e-09
25- 50  2.554e-08   5.555e-09
50-150  2.144e-08   7.640e-09
15-150  5.521e-08   1.080e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 117.990       (-31.0753      -100.281)
Norm        : 4.41757       (-0.73353     0.912695)
------------------------------------------------------------
# Chi-Squared =          71.44 using 59 PHA bins.
# Reduced chi-squared =          1.253 for     57 degrees of freedom 
# Null hypothesis probability =   9.449776e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.151e-08   2.343e-09
25- 50  2.054e-08   3.520e-09
50-150  3.635e-08   7.590e-09
15-150  6.840e-08   1.067e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.04004        (-8.06447      191.839)
R1^2/D10^2  : 0.612939        (-0.609224      -0.609224)
kT2 [keV]   : 17.7161        (-17.9576      -17.9576)
R2^2/D10^2  : 3.90107E-02    (-0.0366956   0.311669)
------------------------------------------------------------
# Chi-Squared =          65.71 using 59 PHA bins.
# Reduced chi-squared =          1.195 for     55 degrees of freedom 
# Null hypothesis probability =   1.528753e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.655e-09   6.295e-09
25- 50  2.395e-08   1.637e-08
50-150  2.893e-08   1.877e-08
15-150  6.254e-08   3.570e-08
Plot creation:
Tue Jul 26 19:28:23 EDT 2011