batgrbproduct Analysis for Trigger=552374

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Apr  3 16:24:36 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger552374/batgroup_hand_proc
======================================================================

  Trigger: 00552374      Segment: 000

  BAT Trigger Time: 386354848   [s; MET]
      Trigger Stop: 386354912   [s; MET]
               UTC: 2013-03-30T16:47:17.616840    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 245.074501135966   Dec: -15.4571678668251  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    21.53
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    21.53

  Flight Position:   [ source = BAT ]
    RA: 245.074501135966   Dec: -15.4571678668251  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 245.070474168547   Dec: -15.3727859270972  [deg; J2000]  
        { 16h 20m 16.9s , -15d 22' 22.0" }
         +/- 1.98930411571502 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.4317130768749 [arcmin] (formal 1-sigma fit error)
    SNR: 11.3868187263743
 
  Angular difference between Flight and Ground position is 5.068272 arcmin
 
  Partial Coding Fraction: 0.3164062    [ including projection effects ]

  Duration
     T90: 310.143999934196 +/- 58.2614644942428
        Measured from: 6.31599998474121
                   to: 316.459999918938     [s; relative to TRIGTIME]
     T50: 128.263999938965 +/- 79.4170787924006
        Measured from: 33.3479999899864
                   to: 161.611999928951     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 15.0759999752045     
                   to: 16.0759999752045     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -6.48000001907349     
                   to: 335.791999995708     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    24.950739   1.575853  -0.272250  -0.195488
           0.241358   0.194749   0.163747   0.145882 [error]
 Peak      0.144328   0.023772   0.011200   0.004274
           0.014025   0.010610   0.009440   0.007832 [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 8.87e-06 8.10e-07 2.92e-08 1.09e-09 9.71e-06 9.71e-06   erg/cm2
              Error 7.44e-07 9.26e-08 8.77e-09 5.62e-10 7.36e-07 7.36e-07   erg/cm2
Peak flux Power-law 1.53e+00 2.25e-01 1.50e-02 1.07e-03 1.77e+00 1.77e+00   ph/cm2/s
              Error 2.94e-01 1.11e-01 2.08e-02 2.84e-03 3.33e-01 3.33e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.65e-06 5.67e-07 1.72e-10 3.52e-18 9.21e-06 9.21e-06   erg/cm2
              Error 8.62e-07 1.14e-07 7.23e-10 6.35e-15 8.63e-07 8.63e-07   erg/cm2
Peak flux Cutoff-PL 1.53e+00 2.17e-01 1.38e-02 9.36e-04 1.76e+00 1.76e+00   ph/cm2/s
              Error 2.91e-01 1.11e-01 1.53e-02 2.00e-03 3.32e-01 2.50e-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    6.791    0.281    -      -           1.06e-04 2.63e-05    0.000 57
CPL   1.000    0.000      50.0    0.0      2.07e-03 0.00e+00    0.000 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.904    0.966    -      -           1.26e-03 1.23e-03    0.000 57
CPL   1.000    0.000      50.0    0.0      2.14e-02 0.00e+00    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  342.272   -6.480  335.792
T90   310.144    6.316  316.460
T50   128.264   33.348  161.612
Peak    1.000   15.076   16.076

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  245.0705   -15.3728   0.0169    30.5914   104.6025         7.2294101     11.387 TRIG_00552374                 
 
Foreground time interval of the image:
 -6.480 335.792 (delta_t = 342.272 [sec])
Background time interval of the image:
-239.000  -6.480 (delta_t = 232.520 [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   -6.480 sec. to  335.792 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 6.79086     ( -0.281667   0.280211 )
Norm@50keV  : 1.06033E-04    ( -2.35691e-05   2.90499e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.19 using 59 PHA bins.
# Reduced chi-squared =          1.091 for     57 degrees of freedom 
# Null hypothesis probability =   2.964973e-01
 
Photon flux (15-150 keV)    in 342.3 sec: 0.976322 ( -0.0794337  0.080127 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.70677e-06 ( -7.33046e-07  7.38701e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -6.480 sec. to  335.792 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 2.07429E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         632.37 using 59 PHA bins.
# Reduced chi-squared =         11.292 for     56 degrees of freedom 
# Null hypothesis probability =   1.519452e-98
 
Photon flux (15-150 keV)    in 342.3 sec: 0.924459 ( -0.095365  0.093271 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.21427e-06 ( -8.72386e-07  8.53285e-07 ) ergs/cm2
 
Band function
Time interval is from   -6.480 sec. to  335.792 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.31265   ( -1.53506   1.51818 )
beta        : -10.0000    ( 10   10 )
Epeak [keV] : 10.0668      ( -0.473234 3.47634 )
Norm@50keV   : 2744.43    ( -171.962   210787 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.42 using 59 PHA bins.
# Reduced chi-squared =         0.7530 for     55 degrees of freedom 
# Null hypothesis probability =   9.123626e-01
 
Photon flux (15-150 keV)    in 342.3 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]    : 2.42314  (-0.11122  0.122311)
R^2/D10^2   : 578.043  (-206.431   311.097)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.24 using 59 PHA bins.
# Reduced chi-squared =         0.7235 for     57 degrees of freedom 
# Null hypothesis probability =   9.424550e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.624e-06   1.150e-06
25- 50  5.578e-07   8.712e-08
50-150  1.291e-10   6.481e-11
15-150  9.182e-06   1.232e-06
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 3.97768       (-0.256536      0.291818)
Norm        : 548.498       (-171.863     243.53)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.88 using 59 PHA bins.
# Reduced chi-squared =         0.7523 for     57 degrees of freedom 
# Null hypothesis probability =   9.172950e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.824e-06   1.041e-06
25- 50  6.331e-07   9.037e-08
50-150  9.008e-10   4.580e-10
15-150  9.458e-06   9.944e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.43083        (-0.116843      0.117686)
R1^2/D10^2  : 563.446        (-198.456      319.477)
kT2 [keV]   : 199.363        (-87.2255      -87.2255)
R2^2/D10^2  : 2.21222E-16    (-8.34718e-19   0.00376523)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.25 using 59 PHA bins.
# Reduced chi-squared =         0.7500 for     55 degrees of freedom 
# Null hypothesis probability =   9.153559e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.607e-06   1.106e-06
25- 50  5.641e-07   8.472e-08
50-150  1.349e-10   6.772e-11
15-150  9.172e-06   1.162e-06

Peak spectrum fit

Power-law model
Time interval is from   15.076 sec. to   16.076 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 4.90404     ( -0.884754   1.04738 )
Norm@50keV  : 1.25739E-03    ( -0.000840318   0.00161967 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.44 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     57 degrees of freedom 
# Null hypothesis probability =   2.889202e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.77098 ( -0.332622  0.332488 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.71483e-08 ( -1.20544e-08  1.26416e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   15.076 sec. to   16.076 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 2.13650E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         106.64 using 59 PHA bins.
# Reduced chi-squared =         1.9044 for     56 degrees of freedom 
# Null hypothesis probability =   5.296064e-05
 
Photon flux (15-150 keV)    in 1 sec: 1.76320 ( -0.32786  0.33613 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.64276e-08 ( -1.14506e-08  1.31243e-08 ) ergs/cm2
 
Band function
Time interval is from   15.076 sec. to   16.076 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.09441   ( 3.90667   6.09441 )
beta        : -5.04279    ( -1.05771   0.893314 )
Epeak [keV] : 258.044      ( -258.044 -258.044 )
Norm@50keV   : 0.148202    ( -0.114241   0.219904 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.50 using 59 PHA bins.
# Reduced chi-squared =          1.136 for     55 degrees of freedom 
# Null hypothesis probability =   2.271858e-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]    : 2.74412  (-0.482667  0.607488)
R^2/D10^2   : 444.160  (-444.28   1339.41)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.80 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     57 degrees of freedom 
# Null hypothesis probability =   2.233128e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.670e-08   2.634e-08
25- 50  4.932e-09   2.974e-09
50-150  3.722e-12   4.030e-12
15-150  5.163e-08   2.885e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 5.49075       (-1.48659      2.39641)
Norm        : 289.869       (-190.658     645.585)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.97 using 59 PHA bins.
# Reduced chi-squared =          1.122 for     57 degrees of freedom 
# Null hypothesis probability =   2.451951e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.582e-08   2.359e-08
25- 50  7.107e-09   4.382e-09
50-150  5.788e-11   5.838e-11
15-150  5.299e-08   2.502e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.47486        (-0.511755      0.553279)
R1^2/D10^2  : 846.886        (-645.823      3958.95)
kT2 [keV]   : 14.2998        (-8.02224      14.2096)
R2^2/D10^2  : 5.45127E-02    (-0.0515647   0.791041)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.42 using 59 PHA bins.
# Reduced chi-squared =          1.080 for     55 degrees of freedom 
# Null hypothesis probability =   3.178786e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.550e-08   2.420e-08
25- 50  1.197e-08   7.355e-09
50-150  1.214e-08   9.550e-09
15-150  6.961e-08   3.572e-08
Plot creation:
Wed Apr  3 16:43:05 EDT 2013