batgrbproduct Analysis for Trigger=552336

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Apr  3 17:24:49 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger552336/batgroup_hand_proc
======================================================================

  Trigger: 00552336      Segment: 000

  BAT Trigger Time: 386302952   [s; MET]
      Trigger Stop: 386303072   [s; MET]
               UTC: 2013-03-30T02:22:21.619100    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 276.103791301682   Dec: -24.8745863068089  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    5.86
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    5.86

  Flight Position:   [ source = BAT ]
    RA: 276.103791301682   Dec: -24.8745863068089  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 276.094919933755   Dec: -24.8637855970273  [deg; J2000]  
        { 18h 24m 22.8s , -24d 51' 49.6" }
         +/- 3.45885832239872 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.31409084083798 [arcmin] (formal 1-sigma fit error)
    SNR: 5.16671395190109
 
  Angular difference between Flight and Ground position is 0.808192 arcmin
 
  Partial Coding Fraction: 0.8671875    [ including projection effects ]

  Duration
     T90: 120 +/- 
        Measured from: 0
                   to: 120     [s; relative to TRIGTIME]
     T50: 120 +/- 
        Measured from: 0
                   to: 120     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 120 second)
        Measured from: 0     
                   to: 120     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 120     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.320697   0.175208   0.139082   0.102683
           0.072927   0.066512   0.055366   0.046624 [error]
 Peak      0.320697   0.175208   0.139082   0.102683
           0.072927   0.066512   0.055366   0.046624 [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 6.68e-08 9.10e-08 9.15e-08 1.67e-07 3.03e-07 4.16e-07   erg/cm2
              Error 3.05e-08 3.02e-08 5.15e-08 2.23e-07 1.21e-07 2.58e-07   erg/cm2
Peak flux Power-law 1.81e-02 1.37e-02 6.87e-03 4.94e-03 4.10e-02 4.36e-02   ph/cm2/s
              Error 8.43e-03 4.49e-03 3.73e-03 6.14e-03 1.34e-02 1.44e-02   ph/cm2/s
 
Fluence   Cutoff-PL 8.59e-08 7.36e-08 3.73e-10 1.95e-17 2.96e-07 1.60e-07   erg/cm2
              Error 3.41e-08 5.36e-08 6.73e-08 0.00e+00 2.79e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 1.81e-02 1.37e-02 6.86e-03 4.89e-03 4.09e-02 4.29e-02   ph/cm2/s
              Error 8.51e-03 4.49e-03 5.37e-03 4.90e-03 1.35e-02 1.54e-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    1.992    0.649    -      -           2.74e-04 1.15e-04    0.000 57
CPL -10.000    0.000      24.3    3.6      4.63e+05 1.25e+06    0.000 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.992    0.649    -      -           2.74e-04 1.15e-04    0.000 57
CPL -10.000    0.000      24.3    3.6      4.63e+05 1.25e+06    0.000 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  120.000    0.000  120.000
T90   120.000    0.000  120.000
T50   120.000    0.000  120.000
Peak  120.000    0.000  120.000

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  276.0949   -24.8638   0.0371    22.4944    19.3431         0.7696717      5.167 TRIG_00552336                 
 
Foreground time interval of the image:
  0.000 120.000 (delta_t = 120.000 [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  120.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99223     ( -0.613119   0.684394 )
Norm@50keV  : 2.73987E-04    ( -0.000117513   0.000111687 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.22 using 59 PHA bins.
# Reduced chi-squared =          1.021 for     57 degrees of freedom 
# Null hypothesis probability =   4.303178e-01
 
Photon flux (15-150 keV)    in 120 sec: 4.09519E-02 ( -0.0134421  0.0134483 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.03078e-07 ( -1.16041e-07  1.24997e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  120.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -10.0000     (     )
Epeak [keV] : 24.2814      ( -3.19364 3.96108 )
Norm@50keV  : 4.63381E+05    ( -463324   2.0341e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.48 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     56 degrees of freedom 
# Null hypothesis probability =   4.202895e-01
 
Photon flux (15-150 keV)    in 120 sec: 4.09423E-02 ( -0.0134715  0.0134397 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.29484e-18 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  120.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -5   -5 )
beta        : -2.66229    ( -3.69865   0.96907 )
Epeak [keV] : 24.6002      ( -10.9048 6.40899 )
Norm@50keV   : 59.6030    ( -18.5456   1975.07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.49 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     55 degrees of freedom 
# Null hypothesis probability =   4.561056e-01
 
Photon flux (15-150 keV)    in 120 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]    : 6.78993  (-1.90855  3.92855)
R^2/D10^2   : 8.72770E-02  (-0.0872552   0.26868)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.46 using 59 PHA bins.
# Reduced chi-squared =          1.043 for     57 degrees of freedom 
# Null hypothesis probability =   3.861677e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.507e-08   4.606e-08
25- 50  9.684e-08   6.138e-08
50-150  1.436e-08   1.235e-08
15-150  1.863e-07   1.198e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 58.6871       (-37.3119      -58.7287)
Norm        : 0.216302       (-0.0966744     0.231928)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.41 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     57 degrees of freedom 
# Null hypothesis probability =   4.235050e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.500e-08   3.771e-08
25- 50  9.825e-08   5.993e-08
50-150  1.097e-07   9.222e-08
15-150  2.730e-07   1.781e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.84289        (-1.88092      2.78462)
R1^2/D10^2  : 0.146103        (-0.116736      0.506273)
kT2 [keV]   : 42.3854        (-40.9182      -42.4282)
R2^2/D10^2  : 8.59664E-05    (-8.46748e-05   0.00280916)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.47 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     55 degrees of freedom 
# Null hypothesis probability =   4.567884e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.877e-08   4.915e-08
25- 50  8.784e-08   5.092e-08
50-150  1.688e-07   9.798e-08
15-150  3.354e-07   1.634e-07

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to  120.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99223     ( -0.613119   0.684394 )
Norm@50keV  : 2.73987E-04    ( -0.000117513   0.000111687 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.22 using 59 PHA bins.
# Reduced chi-squared =          1.021 for     57 degrees of freedom 
# Null hypothesis probability =   4.303178e-01
 
Photon flux (15-150 keV)    in 120 sec: 4.09519E-02 ( -0.0134421  0.0134483 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.03078e-07 ( -1.16041e-07  1.24997e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  120.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -10.0000     (     )
Epeak [keV] : 24.2814      ( -3.19364 3.96108 )
Norm@50keV  : 4.63381E+05    ( -463324   2.0341e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.48 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     56 degrees of freedom 
# Null hypothesis probability =   4.202895e-01
 
Photon flux (15-150 keV)    in 120 sec: 4.09423E-02 ( -0.0134715  0.0134397 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.29484e-18 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  120.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -5   -5 )
beta        : -2.66229    ( -3.69865   0.96907 )
Epeak [keV] : 24.6002      ( -10.8346 6.40947 )
Norm@50keV   : 59.6030    ( -18.5456   1975.07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.49 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     55 degrees of freedom 
# Null hypothesis probability =   4.561056e-01
 
Photon flux (15-150 keV)    in 120 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]    : 6.78993  (-1.90855  3.92855)
R^2/D10^2   : 8.72770E-02  (-0.0872552   0.26868)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.46 using 59 PHA bins.
# Reduced chi-squared =          1.043 for     57 degrees of freedom 
# Null hypothesis probability =   3.861677e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.507e-08   4.532e-08
25- 50  9.684e-08   6.300e-08
50-150  1.436e-08   1.231e-08
15-150  1.863e-07   1.138e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 58.6871       (-37.3119      -58.7287)
Norm        : 0.216302       (-0.0966744     0.231928)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.41 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     57 degrees of freedom 
# Null hypothesis probability =   4.235050e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.500e-08   4.184e-08
25- 50  9.825e-08   6.258e-08
50-150  1.097e-07   8.562e-08
15-150  2.730e-07   1.805e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.84289        (-1.88092      2.78462)
R1^2/D10^2  : 0.146103        (-0.116736      0.506273)
kT2 [keV]   : 42.3854        (-30.9866      -42.4282)
R2^2/D10^2  : 8.59664E-05    (-8.46748e-05   0.00280916)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.47 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     55 degrees of freedom 
# Null hypothesis probability =   4.567884e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.877e-08   4.959e-08
25- 50  8.784e-08   5.197e-08
50-150  1.688e-07   1.090e-07
15-150  3.354e-07   1.703e-07
Plot creation:
Wed Apr  3 17:51:46 EDT 2013