batgrbproduct Analysis for Trigger=552677

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Apr  2 23:23:38 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger552677/GCN5_download_cron
======================================================================

  Trigger: 00552677      Segment: 000

  BAT Trigger Time: 386596600   [s; MET]
      Trigger Stop: 386597592   [s; MET]
               UTC: 2013-04-02T11:56:29.606260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 250.423654349211   Dec: -45.5609368436553  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.39
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.39

  Flight Position:   [ source = BAT ]
    RA: 250.423654349211   Dec: -45.5609368436553  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 250.466087560093   Dec: -45.5661044482152  [deg; J2000]  
        { 16h 41m 51.9s , -45d 33' 58.0" }
         +/- 6.48473004496102 [arcmin] (estimated 90% radius based on SNR)
         +/- 5.07244074037637 [arcmin] (formal 1-sigma fit error)
    SNR: 2.10510036501593
 
  Angular difference between Flight and Ground position is 1.809261 arcmin
 
  Partial Coding Fraction: 0.7109375    [ including projection effects ]

  Duration
     T90: 992 +/- 
        Measured from: 0
                   to: 992     [s; relative to TRIGTIME]
     T50: 992 +/- 
        Measured from: 0
                   to: 992     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 992 second)
        Measured from: 0     
                   to: 992     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 992     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.209004   0.289726  -0.041272   0.000774
           0.098507   0.097513   0.085181   0.080930 [error]
 Peak      0.209004   0.289726  -0.041272   0.000774
           0.098507   0.097513   0.085181   0.080930 [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 8.53e-08 7.62e-08 4.68e-08 4.35e-08 2.27e-07 2.55e-07   erg/cm2
              Error 4.29e-08 4.52e-08 5.50e-08 1.05e-07 1.35e-07 1.95e-07   erg/cm2
Peak flux Power-law 1.54e-02 7.71e-03 2.37e-03 9.23e-04 2.60e-02 2.64e-02   ph/cm2/s
              Error 7.86e-03 4.43e-03 2.71e-03 2.02e-03 1.25e-02 1.29e-02   ph/cm2/s
 
Fluence   Cutoff-PL 8.67e-08 1.15e-07 1.46e-09 7.29e-16 2.04e-07 2.03e-07   erg/cm2
              Error 4.82e-08 6.66e-08 1.45e-08 2.59e-10 8.53e-08 6.30e-08   erg/cm2
Peak flux Cutoff-PL 1.45e-02 1.26e-02 8.96e-05 2.07e-11 2.71e-02 2.72e-02   ph/cm2/s
              Error 8.16e-03 6.78e-03 8.26e-04 7.72e-06 1.11e-02 1.11e-02   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    2.729    1.045    -      -           1.14e-04 1.11e-04   57.210 57
CPL  -8.473    0.000      26.7    6.2      9.72e+03 0.00e+00   51.640 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.729    1.045    -      -           1.14e-04 1.11e-04   57.210 57
CPL  -8.473    0.000      26.7    6.2      9.72e+03 0.00e+00   51.640 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  992.000    0.000  992.000
T90   992.000    0.000  992.000
T50   992.000    0.000  992.000
Peak  992.000    0.000  992.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  250.4661 -45.5661 0.0909   28.9  163.2       0.4477     2.1  TRIG_00552677       
------------------------------------------
 
Foreground time interval of the image:
  0.000 183.045 (delta_t = 183.045 [sec])
Background time interval of the image:

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  183.044 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.72860     ( -0.837297   1.25292 )
Norm@50keV  : 1.14095E-04    ( -0.000115176   0.000106509 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.21 using 59 PHA bins.
# Reduced chi-squared =          1.004 for     57 degrees of freedom 
# Null hypothesis probability =   4.673192e-01
 
Photon flux (15-150 keV)    in 183 sec: 2.60356E-02 ( -0.0124322  0.0125836 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.26785e-07 ( -1.17528e-07  1.52461e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  183.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -8.47344     (     )
Epeak [keV] : 26.6618      ( -6.52836 5.78711 )
Norm@50keV  : 9719.90    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.64 using 59 PHA bins.
# Reduced chi-squared =         0.9221 for     56 degrees of freedom 
# Null hypothesis probability =   6.405432e-01
 
Photon flux (15-150 keV)    in 183 sec: 2.71221E-02 ( -0.0105913  0.0115299 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.03547e-07 ( -8.0897e-08  8.97908e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  183.044 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97300   ( -14.6586   -4.973 )
beta        : -9.37149    ( 9.37149   19.3258 )
Epeak [keV] : 26.8566      ( -6.20695 5.86067 )
Norm@50keV   : 27.5896    ( -10.9099   148.551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.13 using 59 PHA bins.
# Reduced chi-squared =         0.9477 for     55 degrees of freedom 
# Null hypothesis probability =   5.851621e-01
 
Photon flux (15-150 keV)    in 183 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]    : 6.29277  (-1.7564  2.2966)
R^2/D10^2   : 9.28604E-02  (-0.0931591   0.283517)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.24 using 59 PHA bins.
# Reduced chi-squared =         0.9341 for     57 degrees of freedom 
# Null hypothesis probability =   6.167642e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.545e-08   5.895e-08
25- 50  1.054e-07   7.038e-08
50-150  1.169e-08   1.165e-08
15-150  2.125e-07   1.431e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 21.1272       (-11.2024      34.9829)
Norm        : 0.313419       (-0.194171     0.503723)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.60 using 59 PHA bins.
# Reduced chi-squared =         0.9755 for     57 degrees of freedom 
# Null hypothesis probability =   5.276490e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.305e-08   5.790e-08
25- 50  8.493e-08   5.667e-08
50-150  2.785e-08   3.149e-08
15-150  2.058e-07   1.413e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.25568        (-1.75044      2.30384)
R1^2/D10^2  : 9.49646E-02        (-0.0704499      0.283365)
kT2 [keV]   : 0.273407        (-0.273407      -0.273407)
R2^2/D10^2  : 1.57226E-04    (-0.000157587   -0.000157587)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.24 using 59 PHA bins.
# Reduced chi-squared =         0.9681 for     55 degrees of freedom 
# Null hypothesis probability =   5.419699e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to  183.044 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.72860     ( -0.837297   1.25292 )
Norm@50keV  : 1.14095E-04    ( -0.000115176   0.000106509 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.21 using 59 PHA bins.
# Reduced chi-squared =          1.004 for     57 degrees of freedom 
# Null hypothesis probability =   4.673192e-01
 
Photon flux (15-150 keV)    in 183 sec: 2.60356E-02 ( -0.0124322  0.0125836 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.26785e-07 ( -1.17528e-07  1.52461e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  183.044 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -8.47344     (     )
Epeak [keV] : 26.6618      ( -6.52836 5.78711 )
Norm@50keV  : 9719.90    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.64 using 59 PHA bins.
# Reduced chi-squared =         0.9221 for     56 degrees of freedom 
# Null hypothesis probability =   6.405432e-01
 
Photon flux (15-150 keV)    in 183 sec: 2.71221E-02 ( -0.0105913  0.0115299 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.03547e-07 ( -8.0897e-08  8.97908e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  183.044 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97300   ( -4.75717   -4.973 )
beta        : -9.37149    ( 9.37149   19.3258 )
Epeak [keV] : 26.8566      ( -6.20695 5.86067 )
Norm@50keV   : 27.5896    ( -10.9099   148.551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.13 using 59 PHA bins.
# Reduced chi-squared =         0.9477 for     55 degrees of freedom 
# Null hypothesis probability =   5.851621e-01
 
Photon flux (15-150 keV)    in 183 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]    : 6.29277  (-1.7564  2.2966)
R^2/D10^2   : 9.28604E-02  (-0.0931591   0.283517)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.24 using 59 PHA bins.
# Reduced chi-squared =         0.9341 for     57 degrees of freedom 
# Null hypothesis probability =   6.167642e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.545e-08   5.951e-08
25- 50  1.054e-07   6.975e-08
50-150  1.169e-08   1.117e-08
15-150  2.125e-07   1.316e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 21.1272       (-11.2024      34.9829)
Norm        : 0.313419       (-0.194171     0.503723)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.60 using 59 PHA bins.
# Reduced chi-squared =         0.9755 for     57 degrees of freedom 
# Null hypothesis probability =   5.276490e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.305e-08   5.892e-08
25- 50  8.493e-08   5.916e-08
50-150  2.785e-08   3.088e-08
15-150  2.058e-07   1.330e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.25568        (-1.75044      2.30384)
R1^2/D10^2  : 9.49646E-02        (-0.0704499      0.283365)
kT2 [keV]   : 0.273407        (-0.273407      -0.273407)
R2^2/D10^2  : 1.57226E-04    (-0.000157587   -0.000157587)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.24 using 59 PHA bins.
# Reduced chi-squared =         0.9681 for     55 degrees of freedom 
# Null hypothesis probability =   5.419699e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00
Plot creation:
Tue Apr  2 23:33:01 EDT 2013