GRB100206A

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: Fri Jan 17 20:03:46 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger411412
======================================================================

  Trigger: 00411412      Segment: 000

  BAT Trigger Time: 287155810.88   [s; MET]
      Trigger Stop: 287155811.008   [s; MET]
               UTC: 2010-02-06T13:30:05.374220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 47.1767399510983   Dec: 13.1679638316509  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    14.02
     Image Trigger?:     NO
     Rate S/N Ratio:     58.1807528311554  [ if not an image trigger ]
     Image S/N Ratio:    14.02

  Analysis Position:   [ source = BAT ]
    RA: 47.1767399510983   Dec: 13.1679638316509  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 47.1669509745934   Dec: 13.1751876750513  [deg; J2000]  
        { 03h 08m 40.1s , +13d 10' 30.7" }
         +/- 1.4678010425001 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.610461438752174 [arcmin] (formal 1-sigma fit error)
    SNR: 17.5801425260764
 
  Angular difference between the analysis and refined position is 0.717577 arcmin
 
  Partial Coding Fraction: 0.515625    [ including projection effects ]

  Duration
     T90: 0.115999937057495 +/- 0.0178885800721685
        Measured from: -0.00400000810623169
                   to: 0.111999928951263     [s; relative to TRIGTIME]
     T50: 0.0559999942779541 +/- 0.0113136892801003
        Measured from: 0.0199999809265137
                   to: 0.0759999752044678     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.439999997615814     
                   to: 0.560000002384186     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00800001621246338     
                   to: 0.124000012874603     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.025114   0.048796   0.067208   0.029876
           0.003741   0.004978   0.005945   0.005325 [error]
 Peak      0.034191   0.057058   0.065609   0.027389
           0.007691   0.008843   0.009264   0.009815 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    0.132   -0.008    0.124
T90     0.116   -0.004    0.112
T50     0.056    0.020    0.076
Peak    1.000   -0.440    0.560
 
 
====== 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      -0.627    -0.167      0.172       -           -               -         8.34e-02     -8.21e-03          8.15e-03      42.920   57
CPL     -0.619    -0.169      0.688     9997.190    -9997.190      -9997.190      8.41e-02     -8.15e-03          7.83e-02      42.920   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      -0.789     -0.270     0.288       -           -               -         1.23e-02     -1.87e-03          1.85e-03      64.980   57
CPL     -0.788     -0.266     0.297     9999.360    -9999.360      -9999.360      1.24e-02     -1.24e-02          1.65e-02      64.990   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   6.25e-09  1.97e-08  5.11e-08  3.81e-07  1.39e-07  4.58e-07   erg/cm2
      90%_error_low -1.23e-09 -2.41e-09 -5.31e-09 -8.56e-08 -1.51e-08 -8.89e-08   erg/cm2
      90%_error_hi   1.32e-09  2.36e-09  5.26e-09  1.02e-07  1.52e-08  1.04e-07   erg/cm2
Peak flux       PL   2.57e-01  3.97e-01  4.59e-01  1.02e+00  1.41e+00  2.13e+00   ph/cm2/s
      90%_error_low -8.02e-02 -7.90e-02 -7.32e-02 -3.27e-01 -2.10e-01 -3.74e-01   ph/cm2/s
      90%_error_hi   8.98e-02  7.66e-02  7.22e-02  4.30e-01  2.10e-01  4.20e-01   ph/cm2/s
 
Fluence        CPL   6.22e-09  1.97e-08  5.11e-08  3.70e-07  1.39e-07  4.16e-07   erg/cm2
      90%_error_low -1.56e-09 -2.23e-09 -5.33e-09 -2.29e-07 -1.55e-08 -1.77e-07   erg/cm2
      90%_error_hi   1.01e-09  2.57e-09  6.80e-09  7.39e-08  1.32e-08  6.47e-08   erg/cm2
Peak flux      CPL   2.57e-01  3.96e-01  4.56e-01  1.13e+00  1.42e+00  2.23e+00   ph/cm2/s
      90%_error_low     N/A       N/A       N/A       N/A       N/A   -8.54e-01   ph/cm2/s
      90%_error_hi      N/A       N/A       N/A       N/A       N/A    4.29e-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
   47.1670    13.1752   0.0110    26.1735    65.3971         0.1703270     17.580 TRIG_00411412                 
 
Foreground time interval of the image:
 -0.008   0.124 (delta_t =   0.132 [sec])
Background time interval of the image:
-149.379  -0.008 (delta_t = 149.371 [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   -0.008 sec. to    0.124 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.627115     ( -0.167256   0.17249 )
Norm@50keV  : 8.33937E-02    ( -0.0082124   0.00815019 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.92 using 59 PHA bins.
# Reduced chi-squared =         0.7530 for     57 degrees of freedom 
# Null hypothesis probability =   9.165668e-01
 
Photon flux (15-150 keV)    in 0.132 sec: 9.70602 ( -0.92069  0.92078 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.38978e-07 ( -1.50967e-08  1.51797e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.008 sec. to    0.124 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.618873     ( -0.168527   0.688478 )
Epeak [keV] : 9997.19      ( -9997.13 -9997.13 )
Norm@50keV  : 8.40898E-02    ( -0.00814573   0.0782968 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.92 using 59 PHA bins.
# Reduced chi-squared =         0.7664 for     56 degrees of freedom 
# Null hypothesis probability =   9.003662e-01
 
Photon flux (15-150 keV)    in 0.132 sec: 9.70947 ( -0.93834  0.91663 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.38942e-07 ( -1.55223e-08  1.32334e-08 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from   -0.440 sec. to    0.560 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.788627     ( -0.270425   0.288334 )
Norm@50keV  : 1.22994E-02    ( -0.00186797   0.00184657 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.98 using 59 PHA bins.
# Reduced chi-squared =          1.140 for     57 degrees of freedom 
# Null hypothesis probability =   2.186440e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.41419 ( -0.2097  0.21009 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.44438e-07 ( -2.38567e-08  2.41552e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.440 sec. to    0.560 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.787786     ( -0.268114   0.2954 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.23854E-02    ( -0.0123935   0.0165172 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.99 using 59 PHA bins.
# Reduced chi-squared =          1.160 for     56 degrees of freedom 
# Null hypothesis probability =   1.921971e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.41757 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.45355e-07 ( -2.92556e-08  2.13928e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 0.1159999 sec.
Hardness ratio (energy fluence ratio) = 2.5898828931

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

S(15-50 keV)  = 2.5966096e-08
S(50-150 keV) = 1.1301217e-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 = 2.046195840359602E-01, IMY = -4.468679014868768E-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:
-149.379410 -0.008000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 20.2070   9.2229    3.1  10.8  -16.6   0.5715   3.7 ------	UNKNOWN                       
347.0684   1.2979    2.7  37.7  -79.3   2.1279   4.3 ------	UNKNOWN                       
342.7640  11.4663    3.3  43.4  -64.7   2.8057   3.5 ------	UNKNOWN

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

Time interval of the image:
-0.008000 0.124000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 47.1670  13.1752    0.7  26.2   65.4   0.1703  17.6 ------	UNKNOWN                       
  2.2508  14.1606    2.3  26.7  -47.7   0.0365   5.0 ------	UNKNOWN                       
357.3409  34.2604    2.3  43.2  -25.8   0.0525   4.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
58.820600 962.193200
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6382  22.0133    0.5  35.8   86.5  36.8015  25.4    0.3	Crab                          
 38.8401  45.7349    3.0  33.3    5.4   2.6194   3.8 ------	UNKNOWN                       
358.4001  24.0951    2.8  47.2  -53.3  11.5778   4.1 ------	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