GRB100213A: Summary Image Light curves Spectra Distribution Others

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 19:52:10 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger412217
======================================================================

  Trigger: 00412217      Segment: 000

  BAT Trigger Time: 287792873.74   [s; MET]
      Trigger Stop: 287792873.804   [s; MET]
               UTC: 2010-02-13T22:27:48.212320    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 349.428219015384   Dec: 43.3834539169845  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.01
     Image Trigger?:     NO
     Rate S/N Ratio:     12.1655250605964  [ if not an image trigger ]
     Image S/N Ratio:    7.01

  Analysis Position:   [ source = BAT ]
    RA: 349.428219015384   Dec: 43.3834539169845  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 349.375576883238   Dec: 43.3713184050059  [deg; J2000]  
        { 23h 17m 30.1s , +43d 22' 16.7" }
         +/- 1.38999449337775 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.392826952452956 [arcmin] (formal 1-sigma fit error)
    SNR: 19.0026417286463
 
  Angular difference between the analysis and refined position is 2.408464 arcmin
 
  Partial Coding Fraction: 0.59375    [ including projection effects ]

  Duration
     T90: 2.21599996089935 +/- 0.257619864022535
        Measured from: -0.164000034332275
                   to: 2.05199992656708     [s; relative to TRIGTIME]
     T50: 1.17199993133545 +/- 0.808240031162311
        Measured from: 0.236000001430511
                   to: 1.40799993276596     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.01199996471405     
                   to: 2.01199996471405     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.392000019550323     
                   to: 2.1599999666214     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.102529   0.138211   0.137618   0.031417
           0.010741   0.011396   0.010837   0.009050 [error]
 Peak      0.067764   0.091624   0.089674   0.012491
           0.007078   0.007722   0.007469   0.006007 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    2.552   -0.392    2.160
T90     2.216   -0.164    2.052
T50     1.172    0.236    1.408
Peak    1.000    1.012    2.012
 
 
====== 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      -1.294    -0.143      0.143       -           -               -         1.06e-02     -8.95e-04          8.93e-04      61.900   57
CPL     -0.842    -0.504      0.591      134.748     -49.495      -134.748      1.76e-02     -7.35e-03          1.57e-02      59.720   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      -1.333     -0.145     0.144       -           -               -         1.76e-02     -1.55e-03          1.55e-03      64.950   57
CPL     -0.713     -0.565     0.646      106.750     -31.481       415.430      3.58e-02     -1.68e-02          3.72e-02      61.400   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   2.86e-08  5.95e-08  9.72e-08  3.57e-07  2.68e-07  5.42e-07   erg/cm2
      90%_error_low -4.14e-09 -5.41e-09 -1.02e-08 -7.49e-08 -2.54e-08 -8.33e-08   erg/cm2
      90%_error_hi   4.30e-09  5.37e-09  1.02e-08  8.75e-08  2.56e-08  9.39e-08   erg/cm2
Peak flux       PL   6.18e-01  6.87e-01  5.46e-01  7.17e-01  2.12e+00  2.57e+00   ph/cm2/s
      90%_error_low -9.02e-02 -6.46e-02 -5.90e-02 -1.46e-01 -1.85e-01 -2.34e-01   ph/cm2/s
      90%_error_hi   9.40e-02  6.41e-02  5.85e-02  1.67e-01  1.85e-01  2.37e-01   ph/cm2/s
 
Fluence        CPL   2.62e-08  6.22e-08  1.01e-07  1.91e-07  2.61e-07  3.80e-07   erg/cm2
      90%_error_low -4.96e-09 -6.26e-09 -1.13e-08 -9.27e-08 -2.72e-08 -9.59e-08   erg/cm2
      90%_error_hi   5.04e-09  6.42e-09  1.16e-08  1.92e-07  2.72e-08  1.94e-07   erg/cm2
Peak flux      CPL   5.51e-01  7.28e-01  5.79e-01  3.77e-01  2.07e+00  2.23e+00   ph/cm2/s
      90%_error_low -1.09e-01 -7.56e-02 -6.79e-02 -1.62e-01 -1.90e-01 -2.56e-01   ph/cm2/s
      90%_error_hi   1.11e-01  7.74e-02  6.96e-02  3.05e-01  1.90e-01  3.38e-01   ph/cm2/s
 
======================================================================

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  349.3756    43.3713   0.0101    24.5953   -91.8839         0.4085600     19.003 TRIG_00412217                 
 
Foreground time interval of the image:
 -0.392   2.160 (delta_t =   2.552 [sec])
Background time interval of the image:
-239.740  -0.392 (delta_t = 239.348 [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

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   -0.392 sec. to    2.160 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.29353     ( -0.142544   0.142678 )
Norm@50keV  : 1.06286E-02    ( -0.000895389   0.000893371 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.90 using 59 PHA bins.
# Reduced chi-squared =          1.086 for     57 degrees of freedom 
# Null hypothesis probability =   3.057006e-01
 
Photon flux (15-150 keV)    in 2.552 sec: 1.26653 ( -0.10744  0.10754 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.68491e-07 ( -2.53596e-08  2.55927e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from   -0.392 sec. to    2.160 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.842168     ( -0.504006   0.591446 )
Epeak [keV] : 134.748      ( -49.4965 -134.75 )
Norm@50keV  : 1.76261E-02    ( -0.00735423   0.0156528 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.72 using 59 PHA bins.
# Reduced chi-squared =          1.066 for     56 degrees of freedom 
# Null hypothesis probability =   3.422513e-01
 
Photon flux (15-150 keV)    in 2.552 sec: 1.24402 ( -0.11078  0.11068 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.60825e-07 ( -2.72311e-08  2.72207e-08 ) ergs/cm2
 

1-s peak spectrum fit

Power-law model

Time interval is from    1.012 sec. to    2.012 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.33261     ( -0.144909   0.144046 )
Norm@50keV  : 1.76342E-02    ( -0.00155481   0.00155066 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.95 using 59 PHA bins.
# Reduced chi-squared =          1.140 for     57 degrees of freedom 
# Null hypothesis probability =   2.193059e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.11699 ( -0.18503  0.18513 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.72934e-07 ( -1.71259e-08  1.72964e-08 ) ergs/cm2
 

Cutoff power-law model

Time interval is from    1.012 sec. to    2.012 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.712934     ( -0.565095   0.645938 )
Epeak [keV] : 106.750      ( -31.4806 415.43 )
Norm@50keV  : 3.58361E-02    ( -0.0167576   0.0371979 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.40 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     56 degrees of freedom 
# Null hypothesis probability =   2.887643e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.07194 ( -0.1901  0.18986 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.66184e-07 ( -1.84331e-08  1.84918e-08 ) ergs/cm2
 

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = 2.216 sec.
Hardness ratio (energy fluence ratio) = 1.6318116762

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

S(15-50 keV)  = 8.809394e-08
S(50-150 keV) = 1.8039883e-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 = -1.504800972880541E-02, IMY = 4.574892327589972E-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:
-239.740000 -0.392000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
308.0571  41.0946   13.5  45.2  -50.7   0.5298   0.9    8.9	Cyg X-3                       
326.1714  38.3318  408.7  38.8  -69.7  -0.0135  -0.0    0.6	Cyg X-2                       
256.1941  76.4150    2.8  37.2   13.5   1.0017   4.1 ------	UNKNOWN                       
265.6416  48.1934    2.5  57.5  -14.3   3.8025   4.6 ------	UNKNOWN                       
 14.2221   7.6458    3.2  54.0 -143.2   3.9474   3.6 ------	UNKNOWN                       

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

Time interval of the image:
-0.392000 2.160000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
308.0173  41.0993    4.5  45.2  -50.6   0.1465   2.6    9.8	Cyg X-3                       
326.1258  38.1789    3.0  39.0  -69.8   0.1635   3.9    8.8	Cyg X-2                       
273.2644  53.4350    2.2  50.4  -15.6   0.1914   5.1 ------	UNKNOWN                       
349.3756  43.3713    0.6  24.6  -91.9   0.4085  19.0 ------	UNKNOWN                       
287.3277  49.9631    2.7  47.7  -27.5   0.1542   4.3 ------	UNKNOWN                       
  9.1287  22.5790    3.0  39.4 -135.0   0.1100   3.8 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
56.960600 364.260590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5729  35.2063    0.6  38.8  -19.6   5.1028  19.8    0.9	Cyg X-1                       
308.0998  40.9725    1.1  30.4  -14.9   2.2271  10.5    1.3	Cyg X-3                       
325.9872  38.2019    7.9  18.4  -33.2   0.2829   1.5   11.3	Cyg X-2                       
299.5404  40.0444    2.1  36.8  -12.4   1.2786   5.5 ------	UNKNOWN                       
293.0992  19.4464    3.2  52.5  -33.3   2.7764   3.7 ------	UNKNOWN                       
338.8530   3.3534    3.8  41.1  -98.6   3.8033   3.1 ------	UNKNOWN