batgrbproduct Analysis for Trigger=536897

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Oct 28 19:09:28 EDT 2012
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger536897/batgroup_hand_proc
======================================================================

  Trigger: 00536897      Segment: 000

  BAT Trigger Time: 373093481.728   [s; MET]
      Trigger Stop: 373093482.24   [s; MET]
               UTC: 2012-10-28T05:04:31.919360    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 271.923328992952   Dec: -2.28481991403425  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.54
     Image Trigger?:     NO
     Rate S/N Ratio:     11.6619037896906  [ if not an image trigger ]
     Image S/N Ratio:    9.54

  Flight Position:   [ source = BAT ]
    RA: 271.923328992952   Dec: -2.28481991403425  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 271.903025723604   Dec: -2.29781373618105  [deg; J2000]  
        { 18h 07m 36.7s , -02d 17' 52.1" }
         +/- 1.49742703431222 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.550093428561159 [arcmin] (formal 1-sigma fit error)
    SNR: 17.0853770045683
 
  Angular difference between Flight and Ground position is 1.445494 arcmin
 
  Partial Coding Fraction: 0.5078125    [ including projection effects ]

  Duration
     T90: 3.83999997377396 +/- 0.715541763462338
        Measured from: -0.567999839782715
                   to: 3.27200013399124     [s; relative to TRIGTIME]
     T50: 1.79200005531311 +/- 0.271529048482706
        Measured from: 0.264000117778778
                   to: 2.05600017309189     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0119999647140503     
                   to: 0.98800003528595     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.824000000953674     
                   to: 3.84799998998642     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.165900   0.254977   0.139747   0.037135
           0.019599   0.020031   0.016967   0.013995 [error]
 Peak      0.060316   0.102347   0.031289   0.010602
           0.009646   0.009878   0.008127   0.006492 [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 6.79e-08 1.05e-07 1.21e-07 2.69e-07 3.73e-07 5.62e-07   erg/cm2
              Error 1.01e-08 1.00e-08 1.66e-08 7.55e-08 3.95e-08 9.10e-08   erg/cm2
Peak flux Power-law 8.42e-01 6.44e-01 3.30e-01 2.43e-01 1.93e+00 2.06e+00   ph/cm2/s
              Error 1.61e-01 8.61e-02 6.75e-02 9.38e-02 2.60e-01 2.76e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.38e-08 1.11e-07 1.23e-07 1.25e-07 4.23e-07 0.00e+00   erg/cm2
              Error 1.15e-08 1.33e-08 1.81e-08 1.35e-07 1.44e-07 0.00e+00   erg/cm2
Peak flux Cutoff-PL 7.40e-01 7.75e-01 2.95e-01 3.21e-02 1.84e+00 1.84e+00   ph/cm2/s
              Error 1.94e-01 1.51e-01 1.07e-01 1.01e-01 2.76e-01 2.85e-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    1.790    0.166    -      -           8.66e-03 8.96e-04   42.280 57
CPL   1.288    0.702      65.5  -24.8      1.62e-02 1.77e-02   40.680 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.965    0.232    -      -           1.31e-02 2.07e-03   70.150 57
CPL   0.284    2.030      40.0   14.6      1.32e-01 2.34e+00   66.750 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: 2.560000 sec.
T50 in the 50-300 keV band: 1.600000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    4.672   -0.824    3.848
T90     3.840   -0.568    3.272
T50     1.792    0.264    2.056
Peak    1.000   -0.012    0.988

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  271.9030    -2.2978   0.0113    40.1605  -153.9296         0.6313712     17.085 TRIG_00536897                 
 
Foreground time interval of the image:
 -0.824   3.848 (delta_t =   4.672 [sec])
Background time interval of the image:
-60.728  -0.824 (delta_t =  59.904 [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   -0.824 sec. to    3.848 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.79037     ( -0.163569   0.168054 )
Norm@50keV  : 8.66184E-03    ( -0.000901084   0.000890034 )
------------------------------------------------------------
# Chi-Squared =          42.28 using 59 PHA bins.
# Reduced chi-squared =         0.7417 for     57 degrees of freedom 
# Null hypothesis probability =   9.272810e-01
 
Photon flux (15-150 keV)    in 4.672 sec: 1.18915 ( -0.115515  0.115696 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.72685e-07 ( -3.93566e-08  3.96956e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.824 sec. to    3.848 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.28776     ( -0.798958   0.605774 )
Epeak [keV] : 65.5368      ( -15.8618 -65.5419 )
Norm@50keV  : 1.61766E-02    ( -0.00808244   0.0272622 )
------------------------------------------------------------
# Chi-Squared =          40.68 using 59 PHA bins.
# Reduced chi-squared =         0.7265 for     56 degrees of freedom 
# Null hypothesis probability =   9.382990e-01
 
Photon flux (15-150 keV)    in 4.672 sec: 1.16665 ( -0.11974  0.11957 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.22599e-07 ( -9.01201e-08  1.98029e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.824 sec. to    3.848 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.500031   ( -1.3635   0.482086 )
beta        : -2.05182    ( 2.05253   0.309632 )
Epeak [keV] : 42.4626      ( -18.3754 60.1142 )
Norm@50keV   : 5.31446E-02    ( -0.0587691   670.584 )
------------------------------------------------------------
# Chi-Squared =          39.35 using 59 PHA bins.
# Reduced chi-squared =         0.7154 for     55 degrees of freedom 
# Null hypothesis probability =   9.450014e-01
 
Photon flux (15-150 keV)    in 4.672 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]    : 11.7860  (-1.29502  1.48507)
R^2/D10^2   : 0.307240  (-0.110479   0.168691)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          61.84 using 59 PHA bins.
# Reduced chi-squared =          1.085 for     57 degrees of freedom 
# Null hypothesis probability =   3.075064e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.210e-08   7.615e-09
25- 50  1.297e-07   1.446e-08
50-150  1.070e-07   2.252e-08
15-150  2.788e-07   3.378e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 102.749       (-26.1276      58.6193)
Norm        : 5.24090       (-0.678606     0.78143)
------------------------------------------------------------
# Chi-Squared =          40.63 using 59 PHA bins.
# Reduced chi-squared =         0.7128 for     57 degrees of freedom 
# Null hypothesis probability =   9.502067e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.400e-08   8.106e-09
25- 50  1.113e-07   1.224e-08
50-150  1.831e-07   3.380e-08
15-150  3.583e-07   3.931e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.98660        (-1.98772      1.94272)
R1^2/D10^2  : 0.996443        (-0.497563      1.44713)
kT2 [keV]   : 29.6069        (-10.9253      58.1107)
R2^2/D10^2  : 6.56209E-03    (-0.00616112   0.0328436)
------------------------------------------------------------
# Chi-Squared =          39.72 using 59 PHA bins.
# Reduced chi-squared =         0.7222 for     55 degrees of freedom 
# Null hypothesis probability =   9.398414e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.787e-08   1.886e-08
25- 50  1.196e-07   3.946e-08
50-150  1.863e-07   9.412e-08
15-150  3.637e-07   1.338e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.012 sec. to    0.988 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.96523     ( -0.225612   0.23881 )
Norm@50keV  : 1.30606E-02    ( -0.00209261   0.00204503 )
------------------------------------------------------------
# Chi-Squared =          70.15 using 59 PHA bins.
# Reduced chi-squared =          1.231 for     57 degrees of freedom 
# Null hypothesis probability =   1.132480e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.92842 ( -0.259848  0.260027 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.20255e-07 ( -1.83248e-08  1.86286e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.012 sec. to    0.988 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.283832     ( -2.49856   1.56167 )
Epeak [keV] : 40.0263      ( -10.1192 19.0997 )
Norm@50keV  : 0.132463    ( -0.135567   4.55255 )
------------------------------------------------------------
# Chi-Squared =          66.75 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     56 degrees of freedom 
# Null hypothesis probability =   1.541031e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.83871 ( -0.27619  0.27568 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03119e-07 ( -2.0057e-08  2.4147e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.012 sec. to    0.988 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.874451   ( -1.91852   -0.899716 )
beta        : -2.74505    ( -1.4113   0.631426 )
Epeak [keV] : 35.9040      ( -8.16789 8.37164 )
Norm@50keV   : 0.779977    ( -0.897509   220.2 )
------------------------------------------------------------
# Chi-Squared =          63.31 using 59 PHA bins.
# Reduced chi-squared =          1.151 for     55 degrees of freedom 
# Null hypothesis probability =   2.064851e-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]    : 9.68124  (-1.1956  1.38767)
R^2/D10^2   : 1.07345  (-0.439533   0.716741)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared =          68.58 using 59 PHA bins.
# Reduced chi-squared =          1.203 for     57 degrees of freedom 
# Null hypothesis probability =   1.399304e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.025e-08   4.350e-09
25- 50  4.806e-08   8.945e-09
50-150  2.282e-08   8.175e-09
15-150  9.112e-08   1.583e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 65.9488       (-20.903      38.5649)
Norm        : 9.85135       (-1.96477     2.40091)
------------------------------------------------------------
# Chi-Squared =          67.71 using 59 PHA bins.
# Reduced chi-squared =          1.188 for     57 degrees of freedom 
# Null hypothesis probability =   1.568124e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.510e-08   4.615e-09
25- 50  3.928e-08   6.085e-09
50-150  4.822e-08   1.630e-08
15-150  1.126e-07   1.964e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.78016        (-1.37755      1.18878)
R1^2/D10^2  : 1.46994        (-0.469674      1.1178)
kT2 [keV]   : 197.220        (      )
R2^2/D10^2  : 1.35113E-04    (-6.76905e-05   0.00471526)
------------------------------------------------------------
# Chi-Squared =          59.62 using 59 PHA bins.
# Chi-Squared =          59.23 using 59 PHA bins.
# Reduced chi-squared =          1.084 for     55 degrees of freedom 
# Reduced chi-squared =          1.077 for     55 degrees of freedom 
# Null hypothesis probability =   3.113583e-01
# Null hypothesis probability =   3.241218e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.209e-08   6.770e-09
25- 50  4.571e-08   1.273e-08
50-150  5.168e-08   2.717e-08
15-150  1.195e-07   3.943e-08
Plot creation:
Sun Oct 28 19:23:56 EDT 2012