batgrbproduct Analysis for Trigger=519850

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Apr 11 14:18:30 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger519850/GCN5_download_cron
======================================================================

  Trigger: 00519850      Segment: 000

  BAT Trigger Time: 355773600   [s; MET]
      Trigger Stop: 355773664   [s; MET]
               UTC: 2012-04-10T17:59:51.912820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 176.936516196583   Dec: -61.9721359286726  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.67
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.67

  Flight Position:   [ source = BAT ]
    RA: 176.936516196583   Dec: -61.9721359286726  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 176.90658368963   Dec: -62.0213418179208  [deg; J2000]  
        { 11h 47m 37.6s , -62d 01' 16.8" }
         +/- 3.75258904130132 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.7190860260347 [arcmin] (formal 1-sigma fit error)
    SNR: 4.59881050059493
 
  Angular difference between Flight and Ground position is 3.070414 arcmin
 
  Partial Coding Fraction: 0.9375    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.168619   0.242788   0.053950   0.018198
           0.046911   0.045010   0.038500   0.034007 [error]
 Peak      0.168619   0.242788   0.053950   0.018198
           0.046911   0.045010   0.038500   0.034007 [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 6.67e-08 8.24e-08 7.40e-08 1.15e-07 2.63e-07 3.38e-07   erg/cm2
              Error 2.07e-08 2.09e-08 3.45e-08 1.07e-07 8.00e-08 1.50e-07   erg/cm2
Peak flux Power-law 3.41e-02 2.33e-02 1.05e-02 6.53e-03 7.11e-02 7.44e-02   ph/cm2/s
              Error 1.08e-02 5.78e-03 4.73e-03 5.60e-03 1.70e-02 1.81e-02   ph/cm2/s
 
Fluence   Cutoff-PL 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 Cutoff-PL 3.26e-02 2.58e-02 9.30e-03 6.91e-02 6.94e-02 0.00e+00   ph/cm2/s
              Error 1.20e-02 8.56e-03 7.57e-03 1.74e-02 1.98e-02 0.00e+00   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    2.156    0.486    -      -           4.39e-04 1.51e-04   44.970 57
CPL   1.251    2.367      30.1    0.0      1.63e-03 0.00e+00   44.610 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.156    0.486    -      -           4.39e-04 1.51e-04   44.970 57
CPL   1.251    2.368      30.1    0.0      1.63e-03 0.00e+00   44.610 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   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  176.9066 -62.0213 0.0418   23.2   -6.3       0.4220     4.6  TRIG_00519850       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [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   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.15590     ( -0.448907   0.524065 )
Norm@50keV  : 4.39408E-04    ( -0.000153972   0.000147878 )
------------------------------------------------------------
# Chi-Squared =          44.97 using 59 PHA bins.
# Reduced chi-squared =         0.7890 for     57 degrees of freedom 
# Null hypothesis probability =   8.756923e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.11001E-02 ( -0.0169759  0.0169773 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.62886e-07 ( -7.74214e-08  8.26208e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25149     ( -3.88027   0.853103 )
Epeak [keV] : 30.1062      (   )
Norm@50keV  : 1.62970E-03    (     )
------------------------------------------------------------
# Chi-Squared =          44.61 using 59 PHA bins.
# Reduced chi-squared =         0.7967 for     56 degrees of freedom 
# Null hypothesis probability =   8.632140e-01
 
Photon flux (15-150 keV)    in 64 sec: 6.90604E-02 ( -0.0174188  0.0173196 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.13802   ( 1.11445   1.11445 )
beta        : -2.70481    ( 2.69541   0.940008 )
Epeak [keV] : 29.4627      ( -30.3716 43.7556 )
Norm@50keV   : 1.97817E-03    ( -0.00139269   212.718 )
------------------------------------------------------------
# Chi-Squared =          44.41 using 59 PHA bins.
# Reduced chi-squared =         0.8075 for     55 degrees of freedom 
# Null hypothesis probability =   8.456130e-01
 
Photon flux (15-150 keV)    in 64 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]    : 8.47876  (-1.97509  2.52492)
R^2/D10^2   : 6.33193E-02  (-0.0409542   0.117765)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          46.27 using 59 PHA bins.
# Reduced chi-squared =         0.8118 for     57 degrees of freedom 
# Null hypothesis probability =   8.442598e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.482e-08   2.462e-08
25- 50  1.059e-07   5.286e-08
50-150  3.354e-08   2.248e-08
15-150  1.942e-07   9.525e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 46.5519       (-21.7461      64.3207)
Norm        : 0.421235       (-0.15093     0.262212)
------------------------------------------------------------
# Chi-Squared =          44.61 using 59 PHA bins.
# Reduced chi-squared =         0.7826 for     57 degrees of freedom 
# Null hypothesis probability =   8.836639e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.477e-08   2.516e-08
25- 50  9.062e-08   3.532e-08
50-150  8.211e-08   6.078e-08
15-150  2.375e-07   1.054e-07
Double BB
------------------------------------------------------------
# Chi-Squared =          44.77 using 59 PHA bins.
# Chi-Squared =          44.48 using 59 PHA bins.
# Chi-Squared =          44.44 using 59 PHA bins.
# Chi-Squared =          44.43 using 59 PHA bins.
# Reduced chi-squared =         0.8141 for     55 degrees of freedom 
# Reduced chi-squared =         0.8088 for     55 degrees of freedom 
# Reduced chi-squared =         0.8080 for     55 degrees of freedom 
# Reduced chi-squared =         0.8078 for     55 degrees of freedom 
# Null hypothesis probability =   8.360685e-01
# Null hypothesis probability =   8.438456e-01
# Null hypothesis probability =   8.448982e-01
# Null hypothesis probability =   8.452480e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.243e-08   3.086e-08
25- 50  9.696e-08   5.843e-08
50-150  5.038e-08   3.571e-08
15-150  2.098e-07   1.179e-07

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.15590     ( -0.448907   0.524065 )
Norm@50keV  : 4.39408E-04    ( -0.000153972   0.000147878 )
------------------------------------------------------------
# Chi-Squared =          44.97 using 59 PHA bins.
# Reduced chi-squared =         0.7890 for     57 degrees of freedom 
# Null hypothesis probability =   8.756923e-01
 
Photon flux (15-150 keV)    in 64 sec: 7.11001E-02 ( -0.0169759  0.0169773 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.62886e-07 ( -7.74214e-08  8.26208e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25149     ( -3.88027   0.855236 )
Epeak [keV] : 30.1062      (   )
Norm@50keV  : 1.62970E-03    (     )
------------------------------------------------------------
# Chi-Squared =          44.61 using 59 PHA bins.
# Reduced chi-squared =         0.7967 for     56 degrees of freedom 
# Null hypothesis probability =   8.632140e-01
 
Photon flux (15-150 keV)    in 64 sec: 6.90604E-02 ( -0.0174188  0.017319 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.13802   ( 1.11445   1.11445 )
beta        : -2.70481    ( 2.69541   0.940008 )
Epeak [keV] : 29.4627      ( -30.3716 43.7549 )
Norm@50keV   : 1.97817E-03    ( -0.00139269   212.718 )
------------------------------------------------------------
# Chi-Squared =          44.41 using 59 PHA bins.
# Reduced chi-squared =         0.8075 for     55 degrees of freedom 
# Null hypothesis probability =   8.456130e-01
 
Photon flux (15-150 keV)    in 64 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]    : 8.47876  (-1.97509  2.52492)
R^2/D10^2   : 6.33193E-02  (-0.0409542   0.117765)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          46.27 using 59 PHA bins.
# Reduced chi-squared =         0.8118 for     57 degrees of freedom 
# Null hypothesis probability =   8.442598e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.482e-08   2.724e-08
25- 50  1.059e-07   4.813e-08
50-150  3.354e-08   2.335e-08
15-150  1.942e-07   9.717e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 46.5519       (-21.7461      64.3207)
Norm        : 0.421235       (-0.15093     0.262212)
------------------------------------------------------------
# Chi-Squared =          44.61 using 59 PHA bins.
# Reduced chi-squared =         0.7826 for     57 degrees of freedom 
# Null hypothesis probability =   8.836639e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.477e-08   2.352e-08
25- 50  9.062e-08   3.778e-08
50-150  8.211e-08   5.647e-08
15-150  2.375e-07   1.072e-07
Double BB
------------------------------------------------------------
# Chi-Squared =          44.77 using 59 PHA bins.
# Chi-Squared =          44.48 using 59 PHA bins.
# Chi-Squared =          44.44 using 59 PHA bins.
# Chi-Squared =          44.43 using 59 PHA bins.
# Reduced chi-squared =         0.8141 for     55 degrees of freedom 
# Reduced chi-squared =         0.8088 for     55 degrees of freedom 
# Reduced chi-squared =         0.8080 for     55 degrees of freedom 
# Reduced chi-squared =         0.8078 for     55 degrees of freedom 
# Null hypothesis probability =   8.360685e-01
# Null hypothesis probability =   8.438456e-01
# Null hypothesis probability =   8.448982e-01
# Null hypothesis probability =   8.452480e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.243e-08   2.759e-08
25- 50  9.696e-08   5.718e-08
50-150  5.038e-08   3.472e-08
15-150  2.098e-07   1.165e-07
Plot creation:
Wed Apr 11 14:36:05 EDT 2012