GRB050714B

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time: Thu Sep 11 19:45:38 EDT 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger145994
======================================================================

  Trigger: 00145994      Segment: 000

  BAT Trigger Time: 143073632   [s; MET]
      Trigger Stop: 143073696   [s; MET]
               UTC: 2005-07-14T22:40:32.377900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 169.69397915696   Dec: -15.5277825312379  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.07
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    10.07

  Analysis Position:   [ source = BAT ]
    RA: 169.69397915696   Dec: -15.5277825312379  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 169.685757439453   Dec: -15.5446774461554  [deg; J2000]  
        { 11h 18m 44.6s , -15d 32' 40.8" }
         +/- 2.45400806630531 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.09681943183775 [arcmin] (formal 1-sigma fit error)
    SNR: 8.43631302857758
 
  Angular difference between the analysis and refined position is 1.119583 arcmin
 
  Partial Coding Fraction: 0.3945312    [ including projection effects ]

  Duration
     T90: 49.363999992609 +/- 11.2912489990715
        Measured from: 17.7080000042915
                   to: 67.0719999969006     [s; relative to TRIGTIME]
     T50: 24.5600000023842 +/- 8.26910682771996
        Measured from: 29.2759999930859
                   to: 53.83599999547     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 55.1680000126362     
                   to: 56.1680000126362     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 13.4920000135899     
                   to: 68.2479999959469     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.495592   0.527384   0.104254   0.076400
           0.059257   0.061745   0.054307   0.048546 [error]
 Peak      0.017635   0.028582   0.011863   0.005873
           0.007865   0.008419   0.007342   0.006494 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100   54.756   13.492   68.248
T90    49.364   17.708   67.072
T50    24.560   29.276   53.836
Peak    1.000   55.168   56.168
 
 
====== Spectral Analysis Summary =====================================
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^{Ph_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 both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedo
 
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -2.396    -0.291      0.261       -           -               -         1.18e-03     -2.54e-04          2.51e-04      59.860   57
CPL     -0.009    -1.445      2.072       30.079     -10.423         6.230      3.67e-02     -3.67e-02          7.65e-01      50.770   56
 
 
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -2.012     -0.904     0.720       -           -               -         3.67e-03     -3.67e-03          1.79e-03      57.330   57
CPL     -1.879     -0.542     1.879       38.797      N/A           N/A         4.38e-03        N/A               N/A         57.310   56
 
 
=== 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         PL   1.93e-07  2.06e-07  1.57e-07  1.94e-07  6.30e-07  7.51e-07   erg/cm2
      90%_error_low -3.35e-08 -3.23e-08 -4.34e-08 -8.52e-08 -1.07e-07 -1.57e-07   erg/cm2
      90%_error_hi   3.41e-08  3.19e-08  4.66e-08  1.21e-07  1.11e-07  1.82e-07   erg/cm2
Peak flux       PL   2.47e-01  1.84e-01  9.14e-02  6.46e-02  5.53e-01  5.87e-01   ph/cm2/s
      90%_error_low -1.31e-01 -7.35e-02 -5.77e-02 -6.46e-02 -2.20e-01 -2.34e-01   ph/cm2/s
      90%_error_hi   1.44e-01  7.31e-02  6.13e-02  1.18e-01  2.20e-01  2.36e-01   ph/cm2/s
 
Fluence        CPL   1.73e-07  2.62e-07  1.08e-07  7.09e-09  5.50e-07  5.51e-07   erg/cm2
      90%_error_low -3.89e-08 -4.60e-08 -5.37e-08 -6.57e-09 -9.18e-08 -9.21e-08   erg/cm2
      90%_error_hi   3.84e-08  4.71e-08  6.16e-08  3.91e-08  1.02e-07  1.06e-07   erg/cm2
Peak flux      CPL   2.44e-01  1.87e-01  9.15e-02  5.31e-02  5.51e-01  5.77e-01   ph/cm2/s
      90%_error_low -1.42e-01     N/A       N/A   -5.31e-02 -2.21e-01 -2.43e-01   ph/cm2/s
      90%_error_hi   1.37e-01     N/A       N/A    5.70e-02  2.21e-01  2.51e-01   ph/cm2/s
 
======================================================================

Special notes of this burst

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  169.6858   -15.5447   0.0226    46.3730  -171.4621         1.0907411      8.436 TRIG_00145994                 
 
Foreground time interval of the image:
 13.492  68.248 (delta_t =  54.756 [sec])
Background time interval of the image:
-159.299 -83.000 (delta_t =  76.300 [sec])
-82.000  13.492 (delta_t =  95.492 [sec])

Light Curves

Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.

Full-time range; 1 s binning

Bokeh Plot

Other quick-look light curves:

64 ms binning (zoomed)
16 ms binning (zoomed)
8 ms binning (zoomed)
2 ms binning (zoomed)
SN=5 or 10 s binning (full-time range)
Raw light curve

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from   13.492 sec. to   68.248 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.39618     ( -0.290435   0.261876 )
Norm@50keV  : 1.18008E-03    ( -0.000253678   0.000251516 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.86 using 59 PHA bins.
# Reduced chi-squared =          1.050 for     57 degrees of freedom 
# Null hypothesis probability =   3.722271e-01
 
Photon flux (15-150 keV)    in 54.76 sec: 0.217884 ( -0.031132  0.031131 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.29888e-07 ( -1.07235e-07  1.10985e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   13.492 sec. to   68.248 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.00920015     ( -1.48238   2.03486 )
Epeak [keV] : 30.0786      ( -10.5289 6.12426 )
Norm@50keV  : 3.67320E-02    ( -0.0401858   0.762033 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.77 using 59 PHA bins.
# Reduced chi-squared =         0.9067 for     56 degrees of freedom 
# Null hypothesis probability =   6.724104e-01
 
Photon flux (15-150 keV)    in 54.76 sec: 0.208904 ( -0.030772  0.030947 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.50179e-07 ( -9.18013e-08  1.02476e-07 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from   55.168 sec. to   56.168 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.01151     ( -0.904169   0.720297 )
Norm@50keV  : 3.66710E-03    ( -0.0036671   0.00178842 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.33 using 59 PHA bins.
# Reduced chi-squared =          1.006 for     57 degrees of freedom 
# Null hypothesis probability =   4.629935e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.553039 ( -0.219608  0.219717 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.38446e-08 ( -1.55876e-08  1.6682e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   55.168 sec. to   56.168 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.87923     ( -0.540345   1.88136 )
Epeak [keV] : 38.7967      (   )
Norm@50keV  : 4.37537E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.31 using 59 PHA bins.
# Reduced chi-squared =          1.023 for     56 degrees of freedom 
# Null hypothesis probability =   4.261634e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.551207 ( -0.220781  0.221174 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.34464e-08 ( -1.92261e-08  1.50992e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 49.364 sec.
Hardness ratio (energy fluence ratio) = 0.75976637044

S(15-50 keV) vs. S(50-150 keV) plot

S(15-50 keV)  = 3.993864e-07
S(50-150 keV) = 2.3051592e-07

The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.

Mask shadow pattern

IMX = -1.037486857582655E+00, IMY = 1.557545036574831E-01

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Time interval of the image:
-159.299400 -82.999600
-82.000000 13.492000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
13.492000 68.248000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
216.8186  42.4002    2.8  29.0   39.9   0.3602   4.1 ------	UNKNOWN                       
169.6857 -15.5447    1.4  46.4 -171.5   1.0906   8.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
137.700600 303.047800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.3561 -40.5859   66.9  38.9 -169.9   0.0288   0.2    8.1	Vela X-1                      
170.2992 -60.7195    5.0  45.2  146.7   0.8953   2.3    5.8	Cen X-3                       
182.7583 -60.8693    2.9  46.3  138.4   2.0378   4.0 ------	UNKNOWN                       
202.1198  32.1615    2.2  56.9   -0.1   4.0612   5.2 ------	UNKNOWN                       
184.2853  35.6777    2.4  53.0  -18.1   1.7173   4.8 ------	UNKNOWN

Analysis Summary

Notes:

Image

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

Light Curves

Full-time range; 1 s binning

Other quick-look light curves:

64 ms binning (zoomed) 16 ms binning (zoomed) 8 ms binning (zoomed) 2 ms binning (zoomed) SN=5 or 10 s binning (full-time range) Raw light curve

Spectra

Notes:

Time averaged spectrum fit using the average DRM

Power-law model

Cutoff power-law model

1-s peak spectrum fit

Power-law model

Cutoff power-law model

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

S(15-50 keV) vs. S(50-150 keV) plot

Mask shadow pattern

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Pre-slew background subtracted image of 15-350 keV band

Post-slew image of 15-350 keV band

64 ms binning (zoomed)
16 ms binning (zoomed)
8 ms binning (zoomed)
2 ms binning (zoomed)
SN=5 or 10 s binning (full-time range)
Raw light curve