GRB100205A

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 20:08:35 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger411248
======================================================================

  Trigger: 00411248      Segment: 000

  BAT Trigger Time: 287036328.576   [s; MET]
      Trigger Stop: 287036340.736   [s; MET]
               UTC: 2010-02-05T04:18:43.074340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 141.405845835995   Dec: 31.7394932106859  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.08
     Image Trigger?:     NO
     Rate S/N Ratio:     13.3790881602597  [ if not an image trigger ]
     Image S/N Ratio:    8.08

  Analysis Position:   [ source = BAT ]
    RA: 141.405845835995   Dec: 31.7394932106859  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 141.385012523357   Dec: 31.7434115266088  [deg; J2000]  
        { 09h 25m 32.4s , +31d 44' 36.3" }
         +/- 1.97617766191355 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.609011442474881 [arcmin] (formal 1-sigma fit error)
    SNR: 11.4950225814903
 
  Angular difference between the analysis and refined position is 1.088724 arcmin
 
  Partial Coding Fraction: 0.8046875    [ including projection effects ]

  Duration
     T90: 25.8439999222755 +/- 4.35770214017194
        Measured from: -4.38799995183945
                   to: 21.4559999704361     [s; relative to TRIGTIME]
     T50: 10.4919999837875 +/- 4.05919793977672
        Measured from: 3.15600001811981
                   to: 13.6480000019073     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.11599999666214     
                   to: 9.11599999666214     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -6.17999994754791     
                   to: 23.6840000152588     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.200030   0.227077   0.156249   0.074595
           0.027398   0.028735   0.026113   0.024068 [error]
 Peak      0.008527   0.021282   0.012337   0.015400
           0.005142   0.005379   0.004713   0.004392 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100   29.864   -6.180   23.684
T90    25.844   -4.388   21.456
T50    10.492    3.156   13.648
Peak    1.000    8.116    9.116
 
 
====== 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      -1.578    -0.250      0.243       -           -               -         1.30e-03     -1.97e-04          1.92e-04      50.650   57
CPL     -1.380    -0.441      1.115      142.615    -142.615      -142.615      1.67e-03     -1.67e-03          5.01e-03      50.520   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      -1.317     -0.603     0.633       -           -               -         3.06e-03     -1.02e-03          1.01e-03      59.000   57
CPL     -1.310     -0.610     0.633     9998.880    -9998.880      -9998.880      3.09e-03     -3.09e-03          5.30e-02      59.000   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   5.33e-08  9.34e-08  1.25e-07  3.44e-07  3.64e-07  6.16e-07   erg/cm2
      90%_error_low -1.11e-08 -1.27e-08 -2.54e-08 -1.26e-07 -5.95e-08 -1.52e-07   erg/cm2
      90%_error_hi   1.16e-08  1.27e-08  2.55e-08  1.68e-07  6.10e-08  1.87e-07   erg/cm2
Peak flux       PL   1.06e-01  1.19e-01  9.52e-02  1.27e-01  3.66e-01  4.47e-01   ph/cm2/s
      90%_error_low -6.00e-02 -4.45e-02 -3.93e-02 -8.18e-02 -1.21e-01 -1.51e-01   ph/cm2/s
      90%_error_hi   6.66e-02  4.21e-02  3.82e-02  1.50e-01  1.21e-01  1.60e-01   ph/cm2/s
 
Fluence        CPL   5.22e-08  9.58e-08  1.26e-07  2.40e-07  3.56e-07  5.13e-07   erg/cm2
      90%_error_low -1.27e-08 -1.47e-08 -2.65e-08 -1.89e-07 -7.01e-08 -2.06e-07   erg/cm2
      90%_error_hi   1.24e-08  1.73e-08  2.66e-08  1.36e-07  6.71e-08  1.54e-07   erg/cm2
Peak flux      CPL   1.09e-01  1.19e-01  9.45e-02  1.49e-01  3.68e-01  4.48e-01   ph/cm2/s
      90%_error_low -6.53e-02 -4.44e-02 -3.82e-02     N/A   -1.25e-01 -1.89e-01   ph/cm2/s
      90%_error_hi   6.27e-02  4.98e-02  4.14e-02     N/A    1.22e-01  1.44e-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
  141.3850    31.7434   0.0166    18.2570   125.8385         0.6352899     11.495 TRIG_00411248                 
 
Foreground time interval of the image:
 -6.180  23.684 (delta_t =  29.864 [sec])
Background time interval of the image:
-239.576  -6.180 (delta_t = 233.396 [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   -6.180 sec. to   23.684 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.578     ( -0.250436   0.242973 )
Norm@50keV  : 1.30009E-03    ( -0.000196586   0.000192431 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.65 using 59 PHA bins.
# Reduced chi-squared =         0.8886 for     57 degrees of freedom 
# Null hypothesis probability =   7.106665e-01
 
Photon flux (15-150 keV)    in 29.86 sec: 0.165955 ( -0.022425  0.02243 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.64116e-07 ( -5.94949e-08  6.09828e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -6.180 sec. to   23.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.37977     ( -0.440013   1.11587 )
Epeak [keV] : 142.615      ( -143.309 -143.309 )
Norm@50keV  : 1.66867E-03    ( -0.00166599   0.00501323 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.52 using 59 PHA bins.
# Reduced chi-squared =         0.9022 for     56 degrees of freedom 
# Null hypothesis probability =   6.815300e-01
 
Photon flux (15-150 keV)    in 29.86 sec: 0.164545 ( -0.023471  0.023153 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.56113e-07 ( -7.00516e-08  6.71199e-08 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from    8.116 sec. to    9.116 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.31696     ( -0.60323   0.633413 )
Norm@50keV  : 3.06110E-03    ( -0.00102008   0.00100506 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.00 using 59 PHA bins.
# Reduced chi-squared =          1.035 for     57 degrees of freedom 
# Null hypothesis probability =   4.023156e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.366366 ( -0.120772  0.121106 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.01301e-08 ( -1.11022e-08  1.15271e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    8.116 sec. to    9.116 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.30996     ( -0.607017   0.636745 )
Epeak [keV] : 9998.88      ( -9999.31 -9999.31 )
Norm@50keV  : 3.08863E-03    ( -0.00307347   0.0530387 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.00 using 59 PHA bins.
# Reduced chi-squared =          1.054 for     56 degrees of freedom 
# Null hypothesis probability =   3.663960e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.367807 ( -0.124747  0.121752 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.03152e-08 ( -1.25565e-08  8.43822e-09 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 25.844 sec.
Hardness ratio (energy fluence ratio) = 1.33983156825

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

S(15-50 keV)  = 1.4678387e-07
S(50-150 keV) = 2.173321e-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 = -1.931497594487454E-01, IMY = -2.674294408718210E-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:
-239.576000 -6.180000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4647 -40.5509    9.2  58.7  -10.4   1.2541   1.3    2.9	Vela X-1

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

Time interval of the image:
-6.180000 23.684000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.6346 -40.5840    7.4  58.6  -10.6   0.5045   1.6    5.1	Vela X-1                      
141.3850  31.7434    1.0  18.3  125.8   0.6353  11.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
154.124600 962.452300
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6281  22.0124    0.4  51.9  175.0  30.8528  27.0    0.3	Crab                          
 87.3452  26.7752    2.7  47.0  179.2   3.3576   4.3 ------	UNKNOWN                       
200.7851  52.1856    3.5  47.0  -53.2   7.2305   3.3 ------	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