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
(This burst occurred during telescope slew)
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun Mar 22 21:18:56 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/GRB130623A
======================================================================
Trigger: 00032867 Segment: 001
BAT Trigger Time: 393680575.688
UTC: 2013-06-23T11:42:44.980 [includes UTCF correction]
Where From?: Ground analysis (best_duration.txt)
NOTE: BAT trigger time for ground-detected burst during slew is the T100 start time.
Refined Position: [ source = BAT mosaic image ]
RA: 20.7242747503863 Dec: -77.7890849310072 [deg; J2000]
{ 01h 22m 53.8s , -77d -47' -20.7" }
+/- 1.95956110473 [arcmin] (estimated 90% radius based on SNR)
SNR: 11.6360470405
Angular difference between the analysis and refined position is Usage: arcmin
Partial Coding Fraction: Unavailable because the burst occurred during slew.
Duration
T90: 17.6159999966621 +/- 1.96096301822524
Measured from: 0.56
to: 18.176 [s; relative to TRIGTIME]
T50: 12.8160000443459 +/- 3.20399751693115
Measured from: 2.688
to: 15.504 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 19.984 0.000 19.984
T90 17.616 0.560 18.176
T50 12.816 2.688 15.504
Peak 1.000 0.660 1.660
====== 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 -1.804 -0.212 0.204 - - - 4.52e-03 -6.64e-04 6.56e-04 85.900 57
CPL 0.822 -1.235 1.702 47.093 -5.914 8.168 1.26e-01 -1.26e-01 9.23e-01 69.200 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 -1.702 -0.290 0.279 - - - 1.16e-02 -2.15e-03 2.12e-03 44.820 57
CPL -0.768 -1.050 1.489 60.747 -14.498 -60.747 3.72e-02 -3.72e-02 2.10e-01 42.750 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 1.54e-07 2.34e-07 2.69e-07 5.88e-07 8.31e-07 1.24e-06 erg/cm2
90%_error_low -2.86e-08 -3.13e-08 -5.01e-08 -1.90e-07 -1.23e-07 -2.51e-07 erg/cm2
90%_error_hi 2.97e-08 3.13e-08 5.06e-08 2.39e-07 1.24e-07 2.87e-07 erg/cm2
Peak flux PL 5.81e-01 5.19e-01 3.19e-01 2.98e-01 1.55e+00 1.72e+00 ph/cm2/s
90%_error_low -1.50e-01 -9.14e-02 -7.36e-02 -1.15e-01 -2.69e-01 -2.95e-01 ph/cm2/s
90%_error_hi 1.59e-01 9.09e-02 7.33e-02 1.51e-01 2.69e-01 2.96e-01 ph/cm2/s
Fluence CPL 1.13e-07 3.09e-07 2.60e-07 3.95e-08 7.18e-07 7.22e-07 erg/cm2
90%_error_low -3.44e-08 -4.58e-08 -6.82e-08 -2.93e-08 -1.11e-07 -1.14e-07 erg/cm2
90%_error_hi 3.55e-08 4.74e-08 6.68e-08 7.85e-08 1.20e-07 1.34e-07 erg/cm2
Peak flux CPL 5.13e-01 5.75e-01 3.33e-01 1.10e-01 1.50e+00 1.53e+00 ph/cm2/s
90%_error_low -1.71e-01 -1.14e-01 -8.80e-02 -1.10e-01 -2.74e-01 -2.92e-01 ph/cm2/s
90%_error_hi 1.79e-01 1.21e-01 8.59e-02 2.41e-01 2.75e-01 3.37e-01 ph/cm2/s
======================================================================
Image
Note1: The mosaic image is made with timebin = 0.10 s; energybin = 15-350 keV
Note2: The mosaic image uses Galactic coordinate.
#RAcent DECcent POSerr Theta Phi Peak_Cts SNR Name 20.724 -77.789 0.006 40.621 -149.209 0.051 11.636 UNKNOWN Image time interval: 0.000 to 19.984 [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
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
- 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 19.984 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.80411 ( -0.211636 0.204628 ) Norm@50keV : 4.52042E-03 ( -0.00066312 0.000656076 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 85.90 using 59 PHA bins. # Reduced chi-squared = 1.507 for 57 degrees of freedom # Null hypothesis probability = 7.976503e-03 Photon flux (15-150 keV) in 19.98 sec: 0.623962 ( -0.084056 0.084184 ) ph/cm2/s Energy fluence (15-150 keV) : 8.31372e-07 ( -1.22732e-07 1.24425e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 19.984 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 0.822467 ( -1.2621 1.67557 ) Epeak [keV] : 47.0933 ( -5.88713 8.19485 ) Norm@50keV : 0.125599 ( -0.132555 0.915709 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 69.20 using 59 PHA bins. # Reduced chi-squared = 1.236 for 56 degrees of freedom # Null hypothesis probability = 1.107820e-01 Photon flux (15-150 keV) in 19.98 sec: 0.582741 ( -0.084875 0.085494 ) ph/cm2/s Energy fluence (15-150 keV) : 7.18201e-07 ( -1.10884e-07 1.20439e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 0.660 sec. to 1.660 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.70221 ( -0.289575 0.279337 ) Norm@50keV : 1.16238E-02 ( -0.00214908 0.00211531 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 44.82 using 59 PHA bins. # Reduced chi-squared = 0.7862 for 57 degrees of freedom # Null hypothesis probability = 8.791632e-01 Photon flux (15-150 keV) in 1 sec: 1.54503 ( -0.26861 0.26915 ) ph/cm2/s Energy fluence (15-150 keV) : 1.07622e-07 ( -2.04775e-08 2.07943e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.660 sec. to 1.660 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.767624 ( -1.04959 1.4888 ) Epeak [keV] : 60.7472 ( -14.4979 -60.7472 ) Norm@50keV : 3.72166E-02 ( -0.0372164 0.210476 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 42.75 using 59 PHA bins. # Reduced chi-squared = 0.7634 for 56 degrees of freedom # Null hypothesis probability = 9.036482e-01 Photon flux (15-150 keV) in 1 sec: 1.49998 ( -0.27391 0.27453 ) ph/cm2/s Energy fluence (15-150 keV) : 1.00425e-07 ( -2.20387e-08 2.2582e-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
Mask shadow pattern unavailable because this burst occurs during telescope slews.Spacecraft aspect plot
