batgrbproduct Analysis for Trigger=522197

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon May 14 10:38:23 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger522197/GCN5_download_cron
======================================================================

  Trigger: 00522197      Segment: 000

  BAT Trigger Time: 358650778.112   [s; MET]
      Trigger Stop: 358650779.136   [s; MET]
               UTC: 2012-05-14T01:12:49.907220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 282.990951117893   Dec: -4.25198537883337  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.68
     Image Trigger?:     NO
     Rate S/N Ratio:     20.4939015319192  [ if not an image trigger ]
     Image S/N Ratio:    12.68

  Flight Position:   [ source = BAT ]
    RA: 282.990951117893   Dec: -4.25198537883337  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 283.001859495322   Dec: -4.25802642593745  [deg; J2000]  
        { 18h 52m 00.4s , -04d 15' 28.9" }
         +/- 1.10980544176325 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.520620365496379 [arcmin] (formal 1-sigma fit error)
    SNR: 26.2107846877241
 
  Angular difference between Flight and Ground position is 0.746589 arcmin
 
  Partial Coding Fraction: 0.6171875    [ including projection effects ]

  Duration
     T90: 158.783999919891 +/- 5.85238585139214
        Measured from: -6.46399986743927
                   to: 152.320000052452     [s; relative to TRIGTIME]
     T50: 60.1479999423027 +/- 6.11855406914048
        Measured from: -0.31199985742569
                   to: 59.836000084877     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.220000028610229     
                   to: 1.22000002861023     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -8.75199997425079     
                   to: 165.551999986172     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.326414   1.670662   1.279966   0.236531
           0.092954   0.085138   0.071037   0.058911 [error]
 Peak      0.041321   0.088279   0.084015   0.034050
           0.009806   0.009422   0.008145   0.006090 [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 4.34e-07 7.41e-07 9.66e-07 2.55e-06 2.84e-06 4.69e-06   erg/cm2
              Error 4.48e-08 4.52e-08 6.98e-08 4.06e-07 1.68e-07 4.51e-07   erg/cm2
Peak flux Power-law 5.04e-01 6.14e-01 5.42e-01 8.24e-01 1.95e+00 2.48e+00   ph/cm2/s
              Error 1.18e-01 8.75e-02 6.21e-02 2.04e-01 2.32e-01 2.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.17e-07 7.53e-07 9.80e-07 1.95e-06 4.10e-06 0.00e+00   erg/cm2
              Error 4.11e-08 5.09e-08 7.61e-08 6.58e-07 8.08e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 4.71e-01 6.21e-01 5.59e-01 6.55e-01 1.93e+00 2.31e+00   ph/cm2/s
              Error 1.45e-01 9.22e-02 7.82e-02 3.39e-01 2.41e-01 4.22e-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    1.618    0.103    -      -           1.74e-03 9.83e-05   44.800 57
CPL   1.432    0.300     159.4    0.0      2.15e-03 0.00e+00   44.120 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.179    0.191    -      -           1.66e-02 1.85e-03   67.580 57
CPL   0.934    0.622     255.2    0.0      2.13e-02 1.69e-02   67.250 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: 59.584000 sec.
T50 in the 50-300 keV band: 13.568000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  174.304   -8.752  165.552
T90   158.784   -6.464  152.320
T50    60.148   -0.312   59.836
Peak    1.000    0.220    1.220

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  283.0019  -4.2580 0.0074   35.8  178.0       2.1493    26.2  TRIG_00522197       
------------------------------------------
 
Foreground time interval of the image:
 -8.752  17.389 (delta_t =  26.141 [sec])
Background time interval of the image:
-239.112  -8.752 (delta_t = 230.360 [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   -8.752 sec. to  165.552 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.61828     ( -0.102333   0.102759 )
Norm@50keV  : 1.74339E-03    ( -9.84354e-05   9.81824e-05 )
------------------------------------------------------------
# Chi-Squared =          44.80 using 59 PHA bins.
# Reduced chi-squared =         0.7860 for     57 degrees of freedom 
# Null hypothesis probability =   8.794897e-01
 
Photon flux (15-150 keV)    in 174.3 sec: 0.225321 ( -0.013566  0.0136187 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.83576e-06 ( -1.68052e-07  1.68585e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -8.752 sec. to  165.552 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.43157     ( -0.415441   0.184515 )
Epeak [keV] : 159.445      (   )
Norm@50keV  : 2.14551E-03    (     )
------------------------------------------------------------
# Chi-Squared =          44.12 using 59 PHA bins.
# Reduced chi-squared =         0.7879 for     56 degrees of freedom 
# Null hypothesis probability =   8.747293e-01
 
Photon flux (15-150 keV)    in 174.3 sec: 0.222650 ( -0.014548  0.014594 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.1045e-06 ( -8.10722e-07  8.05719e-07 ) ergs/cm2
 
Band function
Time interval is from   -8.752 sec. to  165.552 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.43258   ( 1.34016   6.15926 )
beta        : -3.52713    ( 6.78726   16.6853 )
Epeak [keV] : 160.023      ( -58.8135 -160.023 )
Norm@50keV   : 2.14280E-03    ( -0.000119126   0.000637522 )
------------------------------------------------------------
# Chi-Squared =          44.12 using 59 PHA bins.
# Reduced chi-squared =         0.8022 for     55 degrees of freedom 
# Null hypothesis probability =   8.531334e-01
 
Photon flux (15-150 keV)    in 174.3 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]    : 15.2298  (  )
R^2/D10^2   : 2.28243E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =         120.58 using 59 PHA bins.
# Reduced chi-squared =         2.1154 for     57 degrees of freedom 
# Null hypothesis probability =   1.858516e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.927e-07   2.180e-08
25- 50  7.763e-07   5.952e-08
50-150  1.234e-06   1.258e-07
15-150  2.203e-06   1.386e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 180.561       (      )
Norm        : 0.910142       (-0.0567462     0.0639979)
------------------------------------------------------------
# Chi-Squared =          44.61 using 59 PHA bins.
# Reduced chi-squared =         0.7827 for     57 degrees of freedom 
# Null hypothesis probability =   8.835605e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.915e-07   2.001e-07
25- 50  7.528e-07   3.876e-07
50-150  1.649e-06   8.487e-07
15-150  2.794e-06   1.431e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.68691        (-1.4376      1.61246)
R1^2/D10^2  : 0.280787        (-0.146296      0.417121)
kT2 [keV]   : 25.0796        (-4.09445      6.80497)
R2^2/D10^2  : 3.10274E-03    (-0.0018157   0.00305703)
------------------------------------------------------------
# Chi-Squared =          48.00 using 59 PHA bins.
# Reduced chi-squared =         0.8727 for     55 degrees of freedom 
# Null hypothesis probability =   7.369372e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.934e-07   9.351e-08
25- 50  7.536e-07   1.289e-07
50-150  1.621e-06   3.171e-07
15-150  2.768e-06   5.325e-07

Peak spectrum fit

Power-law model
Time interval is from    0.220 sec. to    1.220 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17933     ( -0.194615   0.188218 )
Norm@50keV  : 1.66401E-02    ( -0.00185166   0.00184002 )
------------------------------------------------------------
# Chi-Squared =          67.58 using 59 PHA bins.
# Reduced chi-squared =          1.186 for     57 degrees of freedom 
# Null hypothesis probability =   1.593523e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.94774 ( -0.231339  0.233012 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.69821e-07 ( -1.89428e-08  1.89801e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.220 sec. to    1.220 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.934265     ( -0.833726   0.410335 )
Epeak [keV] : 255.202      ( -255.202 -255.202 )
Norm@50keV  : 2.13005E-02    ( -0.00790216   0.0259387 )
------------------------------------------------------------
# Chi-Squared =          67.25 using 59 PHA bins.
# Reduced chi-squared =          1.201 for     56 degrees of freedom 
# Null hypothesis probability =   1.442000e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.92507 ( -0.24056  0.24173 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.05208e-07 ( -1.06755e-07  1.35809e-07 ) ergs/cm2
 
Band function
Time interval is from    0.220 sec. to    1.220 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.04965   ( -6.96974   -6.96974 )
beta        : -1.28721    ( -0.270263   0.234437 )
Epeak [keV] : 38.6884      ( -33.5193 7.27496 )
Norm@50keV   : 2.20353    ( -2.06306   152.789 )
------------------------------------------------------------
# Chi-Squared =          66.63 using 59 PHA bins.
# Reduced chi-squared =          1.211 for     55 degrees of freedom 
# Null hypothesis probability =   1.352822e-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]    : 21.3943  (-2.82257  3.4725)
R^2/D10^2   : 7.21075E-02  (-0.0284053   0.043977)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          82.23 using 59 PHA bins.
# Reduced chi-squared =          1.443 for     57 degrees of freedom 
# Null hypothesis probability =   1.600325e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.185e-09   1.401e-09
25- 50  3.216e-08   5.560e-09
50-150  1.099e-07   2.067e-08
15-150  1.482e-07   2.080e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.997       (      )
Norm        : 8.41156       (-8.41156     -8.41156)
------------------------------------------------------------
# Chi-Squared =          79.31 using 59 PHA bins.
# Reduced chi-squared =          1.391 for     57 degrees of freedom 
# Null hypothesis probability =   2.698468e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.095e-08   1.111e-08
25- 50  4.030e-08   2.119e-08
50-150  8.838e-08   4.715e-08
15-150  1.496e-07   8.065e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.68462        (-2.57652      4.73216)
R1^2/D10^2  : 1.15999        (-0.879667      3.7773)
kT2 [keV]   : 31.3851        (-7.47974      31.0835)
R2^2/D10^2  : 1.77336E-02    (-0.0154807   0.0277291)
------------------------------------------------------------
# Chi-Squared =          66.92 using 59 PHA bins.
# Reduced chi-squared =          1.217 for     55 degrees of freedom 
# Null hypothesis probability =   1.301223e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.466e-08   8.190e-09
25- 50  3.625e-08   1.726e-08
50-150  1.184e-07   5.982e-08
15-150  1.693e-07   7.803e-08
Plot creation:
Mon May 14 10:55:50 EDT 2012