GRB061210

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: Wed Jan 22 11:27:59 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger243690
======================================================================

  Trigger: 00243690      Segment: 000

  BAT Trigger Time: 187446041.176   [s; MET]
      Trigger Stop: 187446041.208   [s; MET]
               UTC: 2006-12-10T12:20:39.551180    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 144.513866649245   Dec: 15.6321041191689  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.35
     Image Trigger?:     NO
     Rate S/N Ratio:     211.501773042214  [ if not an image trigger ]
     Image S/N Ratio:    12.35

  Analysis Position:   [ source = BAT ]
    RA: 144.513866649245   Dec: 15.6321041191689  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 144.522594752055   Dec: 15.6177673176263  [deg; J2000]  
        { 09h 38m 05.4s , +15d 37' 04.0" }
         +/- 2.36206374765045 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.40049067723481 [arcmin] (formal 1-sigma fit error)
    SNR: 8.90932179328649
 
  Angular difference between the analysis and refined position is 0.997151 arcmin
 
  Partial Coding Fraction: 0.3046875    [ including projection effects ]

  Duration
     T90: 85.2320000231266 +/- 13.0880220044292
        Measured from: 0.00799998641014099
                   to: 85.2400000095367     [s; relative to TRIGTIME]
     T50: 49.4280000030994 +/- 19.3336135333546
        Measured from: 6.57600000500679
                   to: 56.0040000081062     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.229999989271164     
                   to: 0.770000010728836     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00400000810623169     
                   to: 89.391999989748     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.517018   0.595547   0.457572   0.083658
           0.082506   0.084794   0.072789   0.062794 [error]
 Peak      0.043164   0.103800   0.150304   0.065645
           0.010001   0.011885   0.012101   0.010506 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100   89.396   -0.004   89.392
T90    85.232    0.008   85.240
T50    49.428    6.576   56.004
Peak    1.000   -0.230    0.770
 
 
====== 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      -1.547    -0.274      0.271       -           -               -         1.30e-03     -1.94e-04          1.92e-04      65.390   57
CPL     -1.557    -0.264      0.286     9999.360    -9999.360      -9999.360      1.29e-03     -1.85e-04          1.05e-03      65.400   56
 
 
=== 1-s peak 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      -0.757     -0.177     0.186       -           -               -         2.44e-02     -2.67e-03          2.62e-03      49.290   57
CPL     -0.478     -0.359     0.834      346.187    -346.187      -346.187      3.16e-02     -9.33e-03          3.37e-02      48.860   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   1.55e-07  2.76e-07  3.78e-07  1.07e-06  1.09e-06  1.88e-06   erg/cm2
      90%_error_low -3.88e-08 -4.27e-08 -7.51e-08 -4.00e-07 -1.76e-07 -4.66e-07   erg/cm2
      90%_error_hi   4.12e-08  4.19e-08  7.37e-08  5.38e-07  1.78e-07  5.75e-07   erg/cm2
Peak flux       PL   4.95e-01  7.78e-01  9.21e-01  2.11e+00  2.81e+00  4.31e+00   ph/cm2/s
      90%_error_low -1.12e-01 -1.13e-01 -9.24e-02 -4.34e-01 -2.93e-01 -4.80e-01   ph/cm2/s
      90%_error_hi   1.22e-01  1.12e-01  9.21e-02  5.08e-01  2.94e-01  5.04e-01   ph/cm2/s
 
Fluence        CPL   1.55e-07  2.69e-07  1.68e-07  1.21e-06  1.10e-06  1.86e-06   erg/cm2
      90%_error_low    N/A    -3.68e-08 -6.58e-08 -7.57e-07 -1.83e-07 -6.25e-07   erg/cm2
      90%_error_hi     N/A     4.91e-08  6.49e-08  8.89e-08  1.70e-07  5.53e-07   erg/cm2
Peak flux      CPL   4.52e-01  7.81e-01  9.55e-01  1.65e+00  2.78e+00  3.84e+00   ph/cm2/s
      90%_error_low -1.49e-01 -1.17e-01 -1.18e-01 -7.42e-01 -3.01e-01 -8.20e-01   ph/cm2/s
      90%_error_hi   1.54e-01  1.17e-01  1.29e-01  6.03e-01  3.02e-01  5.12e-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
  144.5226    15.6178   0.0215    37.5834   140.3810         1.6839807      8.909 TRIG_00243690                 
 
Foreground time interval of the image:
 -0.004  89.392 (delta_t =  89.396 [sec])
Background time interval of the image:
-135.675  -0.004 (delta_t = 135.671 [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   -0.004 sec. to   89.392 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.54703     ( -0.274337   0.27099 )
Norm@50keV  : 1.29511E-03    ( -0.000193833   0.000191599 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.39 using 59 PHA bins.
# Reduced chi-squared =          1.147 for     57 degrees of freedom 
# Null hypothesis probability =   2.085161e-01
 
Photon flux (15-150 keV)    in 89.4 sec: 0.163817 ( -0.024465  0.024569 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09061e-06 ( -1.76248e-07  1.77942e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.004 sec. to   89.392 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.55741     ( -0.264535   0.28487 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.29021E-03    ( -0.000191476   0.00104206 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.40 using 59 PHA bins.
# Reduced chi-squared =          1.168 for     56 degrees of freedom 
# Null hypothesis probability =   1.826505e-01
 
Photon flux (15-150 keV)    in 89.4 sec: 0.163829 ( -0.024529  0.024529 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09761e-06 ( -1.83459e-07  1.70474e-07 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from   -0.230 sec. to    0.770 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.756516     ( -0.177088   0.185773 )
Norm@50keV  : 2.43909E-02    ( -0.00266678   0.00262067 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.29 using 59 PHA bins.
# Reduced chi-squared =         0.8647 for     57 degrees of freedom 
# Null hypothesis probability =   7.563158e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.80873 ( -0.293  0.29405 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.90402e-07 ( -3.00805e-08  3.01364e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.230 sec. to    0.770 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.478131     ( -0.358612   0.833967 )
Epeak [keV] : 346.187      ( -346.187 -346.187 )
Norm@50keV  : 3.15564E-02    ( -0.0093266   0.0337221 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.86 using 59 PHA bins.
# Reduced chi-squared =         0.8724 for     56 degrees of freedom 
# Null hypothesis probability =   7.396927e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.78155 ( -0.30088  0.30194 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.88642e-07 ( -3.08971e-08  3.06514e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 85.232 sec.
Hardness ratio (energy fluence ratio) = 1.36886328559

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

S(15-50 keV)  = 4.303949e-07
S(50-150 keV) = 6.601932e-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 = -5.928568268590017E-01, IMY = -4.907847498504737E-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:
-135.675400 -0.004000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5297 -40.5511    1.0  20.3  -17.1   1.2199  12.0    0.2	Vela X-1                      
170.4799 -60.7674    0.0  42.6  -56.6   0.6876   1.8    9.9	Cen X-3

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

Time interval of the image:
-0.004000 89.392000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5556 -40.3707    5.4  20.1  -17.0  -0.2055  -2.2   11.1	Vela X-1                      
169.9086 -60.7053    5.7  42.4  -56.3   0.5537   2.0   12.9	Cen X-3                       
144.5226  15.6177    1.3  37.6  140.4   1.6824   8.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:

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