GRB100224A

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 GROUND-DETECTED GRB DATA PROCESSING REPORT                 
    Process Script Ver: batgrbproduct v2.46
    Process Start Time: Thu Apr 23 14:20:20 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/ground_detect_bursts/scripts
======================================================================

  Trigger: 00413805      Segment: 000

  BAT Trigger Time: 288717615.204
               UTC: 2010-02-24T15:20:09.724   [includes UTCF correction]
       Where From?: Ground analysis (best_duration.txt)
  NOTE: BAT trigger time for ground-detected burst is the T100 start time.
 
  Analysis Position:   [ source = GCN ]
    RA: 83.467   Dec: -7.994  [deg; J2000]
 
  Refined Position:   [ source = BAT pre-slew image ]
    RA: 83.467   Dec: -7.994  [deg; J2000]
        { 05h 33m 52.1s , -7d -59' -38.4" }
        +/- 2.58173654119 [arcmin] (estimated 90% radius based on SNR)
    SNR: 7.84746875585
 
 
  Angular difference between the analysis and refined position is 0.000000 arcmin
 
  Partial Coding Fraction: 1.03125    [ including projection effects ]

  Duration
     T90: 0.483999984264374 +/- 0.243655520555607
        Measured from: 0
                   to: 0.484     [s; relative to TRIGTIME]
     T50: 0.483999984264374 +/- 0.260192275293733
        Measured from: 0
                   to: 0.484     [s; relative to TRIGTIME]
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    0.484    0.000    0.484
T90     0.484    0.000    0.484
T50     0.484    0.000    0.484
Peak    1.000   -0.216    0.784
 
 
====== 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: 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      -1.090    -0.375      0.387       -           -               -         6.70e-03     -1.39e-03          1.39e-03      71.660   57
CPL     -0.926    -7.807      1.207      357.851      N/A           N/A         7.99e-03        N/A               N/A         71.610   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      -1.071     -0.557     0.604       -           -               -         2.95e-03     -9.18e-04          9.16e-04      54.820   57
CPL     -0.916      0.916     2.426      378.679      N/A           N/A         3.49e-03        N/A               N/A         54.800   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   2.82e-09  6.68e-09  1.25e-08  5.70e-08  3.40e-08  7.90e-08   erg/cm2
      90%_error_low -1.07e-09 -1.63e-09 -3.17e-09 -2.66e-08 -8.01e-09 -2.93e-08   erg/cm2
      90%_error_hi   1.21e-09  1.58e-09  3.11e-09  4.03e-08  8.17e-09  4.14e-08   erg/cm2
Peak flux       PL   8.06e-02  1.05e-01  9.97e-02  1.68e-01  3.41e-01  4.53e-01   ph/cm2/s
      90%_error_low -4.47e-02 -4.06e-02 -3.58e-02 -9.97e-02 -1.08e-01 -1.50e-01   ph/cm2/s
      90%_error_hi   5.48e-02  3.87e-02  3.47e-02  1.72e-01  1.09e-01  1.67e-01   ph/cm2/s
 
Fluence        CPL   2.73e-09  6.77e-09  1.27e-08  4.47e-08  3.36e-08  5.94e-08   erg/cm2
      90%_error_low -1.28e-09 -1.69e-09 -3.33e-09    N/A    -8.73e-09 -3.09e-08   erg/cm2
      90%_error_hi   1.12e-09  1.82e-09  3.57e-09    N/A     8.43e-09  2.88e-08   erg/cm2
Peak flux      CPL   7.78e-02  1.06e-01  1.01e-01  1.40e-01  3.39e-01  4.25e-01   ph/cm2/s
      90%_error_low -5.23e-02 -4.17e-02 -3.63e-02 -1.40e-01 -1.11e-01 -1.83e-01   ph/cm2/s
      90%_error_hi   4.90e-02  4.47e-02  4.15e-02  1.15e-01  1.10e-01  1.89e-01   ph/cm2/s
 
======================================================================

Special notes of this burst

Image

15.0-350.0 keV image (Event data)

#RAcent DECcent POSerr Theta  Phi  Peak_Cts  SNR Name
83.467 -7.994 0.000 8.484 -146.454 0.053 7.847 TRIG_00413805
 
Image time interval: 0.000 to 0.484 [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.

Best duration plot

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    0.000 sec. to    0.484 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.09017     ( -0.375065   0.387221 )
Norm@50keV  : 6.69761E-03    ( -0.0013904   0.00139024 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.66 using 59 PHA bins.
# Reduced chi-squared =          1.257 for     57 degrees of freedom 
# Null hypothesis probability =   9.152073e-02
 
Photon flux (15-150 keV)    in 0.484 sec: 0.776155 ( -0.163505  0.164012 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.40028e-08 ( -8.0057e-09  8.16929e-09 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to    0.484 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.3337     ( -6.39912   2.61427 )
Epeak [keV] : 109.492      (   )
Norm@50keV  : 1.02724E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.72 using 59 PHA bins.
# Reduced chi-squared =          1.263 for     56 degrees of freedom 
# Null hypothesis probability =   8.909796e-02
 
Photon flux (15-150 keV)    in 0.484 sec: 0.770465 ( -0.168998  0.167866 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.3626e-08 ( -8.73484e-09  8.4336e-09 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from   -0.204 sec. to    0.784 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.07121     ( -0.557307   0.60386 )
Norm@50keV  : 2.94825E-03    ( -0.000917962   0.000915558 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.82 using 59 PHA bins.
# Reduced chi-squared =         0.9617 for     57 degrees of freedom 
# Null hypothesis probability =   5.573887e-01
 
Photon flux (15-150 keV)    in 0.988 sec: 0.341087 ( -0.107911  0.108591 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.07438e-08 ( -1.05496e-08  1.08527e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.204 sec. to    0.784 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -3.01722     ( 3.0098   4.51959 )
Epeak [keV] : 275.930      (   )
Norm@50keV  : 1.70135E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.76 using 59 PHA bins.
# Reduced chi-squared =         0.9779 for     56 degrees of freedom 
# Null hypothesis probability =   5.217217e-01
 
Photon flux (15-150 keV)    in 0.988 sec: 0.338852 ( -0.110578  0.109889 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.04142e-08 ( -1.15913e-08  1.10952e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = N/A sec.
Hardness ratio (energy fluence ratio) = N/A

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

S(15-50 keV)  = N/A
S(50-150 keV) = N/A

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 = -0.124327300848, IMY = 0.0824333330417

Spacecraft aspect plot

Bright source in the event data image

Event data image of 15-350 keV band

Time interval of the image:
-0.204000 2.918900
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6173  22.1194    8.3  22.4    5.4   0.0094   1.4    6.4	Crab                          
 85.7112  26.0933    2.7  26.2   10.8   0.0315   4.3 ------	UNKNOWN                       
 87.1451  18.6588    2.6  18.7   14.3   0.0300   4.4 ------	UNKNOWN                       
 83.4772  -7.9725    1.5   8.5 -146.5   0.0521   7.7 ------	UNKNOWN                       
 77.0758   1.4789    2.9   9.6  -68.1   0.0273   4.0 ------	UNKNOWN                       
 51.1400  45.4929    2.1  55.2  -17.1   0.1240   5.5 ------	UNKNOWN

Webpage updated on:
Wed Nov 25 13:58:29 EST 2015

Analysis Summary

Notes:

Image

15.0-350.0 keV image (Event data)

Light Curves

Best duration plot

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 event data image

Event data 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