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: Sun Jan 12 00:21:39 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger564028
======================================================================
Trigger: 00564028 Segment: 000
BAT Trigger Time: 396466778.432 [s; MET]
Trigger Stop: 396466778.944 [s; MET]
UTC: 2013-07-25T17:39:27.599040 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 214.232041308035 Dec: -11.1402286245125 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.17
Image Trigger?: NO
Rate S/N Ratio: 20.2237484161567 [ if not an image trigger ]
Image S/N Ratio: 10.17
Analysis Position: [ source = BAT ]
RA: 214.232041308035 Dec: -11.1402286245125 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 214.236639943365 Dec: -11.1198350527407 [deg; J2000]
{ 14h 16m 56.8s , -11d 07' 11.4" }
+/- 1.02718546279786 [arcmin] (estimated 90% radius based on SNR)
+/- 0.387976456956507 [arcmin] (formal 1-sigma fit error)
SNR: 29.273668134919
Angular difference between the analysis and refined position is 1.253206 arcmin
Partial Coding Fraction: 0.96875 [ including projection effects ]
Duration
T90: 4.77599990367889 +/- 0.855083658147749
Measured from: 0.0480000376701355
to: 4.82399994134903 [s; relative to TRIGTIME]
T50: 1.93999993801117 +/- 0.286216694722533
Measured from: 0.776000022888184
to: 2.71599996089935 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.276000022888184
to: 1.27600002288818 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.38400000333786
to: 5.89600002765656 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.348350 0.282604 0.125882 0.016226
0.014444 0.013992 0.012302 0.010984 [error]
Peak 0.108023 0.101938 0.050608 0.008612
0.006371 0.006345 0.005435 0.004601 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 6.280 -0.384 5.896
T90 4.776 0.048 4.824
T50 1.940 0.776 2.716
Peak 1.000 0.276 1.276
====== 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 -2.276 -0.135 0.130 - - - 6.27e-03 -5.22e-04 5.15e-04 67.710 57
CPL -1.987 1.987 1.987 1.799 -0.753 24.146 9.18e-03 -1.23e-03 1.18e-03 68.030 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 -2.066 -0.150 0.145 - - - 1.48e-02 -1.40e-03 1.37e-03 69.450 57
CPL -1.851 -0.252 0.636 29.032 -24.006 -29.032 1.97e-02 N/A N/A 69.030 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 1.05e-07 1.21e-07 9.95e-08 1.38e-07 3.75e-07 4.63e-07 erg/cm2
90%_error_low -9.29e-09 -7.18e-09 -1.16e-08 -2.98e-08 -2.54e-08 -4.31e-08 erg/cm2
90%_error_hi 9.52e-09 7.17e-09 1.19e-08 3.54e-08 2.58e-08 4.71e-08 erg/cm2
Peak flux PL 1.05e+00 7.60e-01 3.63e-01 2.45e-01 2.29e+00 2.42e+00 ph/cm2/s
90%_error_low -1.14e-01 -5.45e-02 -4.57e-02 -5.52e-02 -1.66e-01 -1.74e-01 ph/cm2/s
90%_error_hi 1.17e-01 5.45e-02 4.62e-02 6.48e-02 1.66e-01 1.74e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -9.29e-09 -7.18e-09 -1.16e-08 -2.98e-08 -2.54e-08 -4.31e-08 erg/cm2
90%_error_hi 9.52e-09 7.17e-09 1.19e-08 3.54e-08 2.58e-08 4.71e-08 erg/cm2
Peak flux CPL 1.03e+00 7.77e-01 3.61e-01 1.77e-01 2.27e+00 2.34e+00 ph/cm2/s
90%_error_low N/A -6.39e-02 -4.88e-02 -1.01e-01 -1.79e-01 -2.19e-01 ph/cm2/s
90%_error_hi N/A 7.15e-02 4.78e-02 1.51e-01 1.77e-01 2.20e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 214.2366 -11.1198 0.0066 19.6024 -147.5253 0.7839156 29.274 TRIG_00564028 Foreground time interval of the image: -0.384 5.896 (delta_t = 6.280 [sec]) Background time interval of the image: -239.432 -0.384 (delta_t = 239.048 [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
- 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 -0.384 sec. to 5.896 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.2761 ( -0.134947 0.13023 ) Norm@50keV : 6.27231E-03 ( -0.000522278 0.000514689 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 67.71 using 59 PHA bins. # Reduced chi-squared = 1.188 for 57 degrees of freedom # Null hypothesis probability = 1.568031e-01 Photon flux (15-150 keV) in 6.28 sec: 1.08187 ( -0.06517 0.06537 ) ph/cm2/s Energy fluence (15-150 keV) : 3.74886e-07 ( -2.54247e-08 2.5823e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.384 sec. to 5.896 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.98897 ( 1.98897 1.98897 ) Epeak [keV] : 1.60727 ( -0.56101 24.3379 ) Norm@50keV : 9.11556E-03 ( -0.00116876 0.00124246 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 68.02 using 59 PHA bins. # Reduced chi-squared = 1.215 for 56 degrees of freedom # Null hypothesis probability = 1.301760e-01 Photon flux (15-150 keV) in 6.28 sec: 1.07971 ( ) ph/cm2/s Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 0.276 sec. to 1.276 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.06577 ( -0.150295 0.144621 ) Norm@50keV : 1.48119E-02 ( -0.00139548 0.00137035 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 69.45 using 59 PHA bins. # Reduced chi-squared = 1.218 for 57 degrees of freedom # Null hypothesis probability = 1.246878e-01 Photon flux (15-150 keV) in 1 sec: 2.29188 ( -0.16614 0.16628 ) ph/cm2/s Energy fluence (15-150 keV) : 1.37224e-07 ( -1.17048e-08 1.19077e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.276 sec. to 1.276 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.85118 ( -0.251885 0.636182 ) Epeak [keV] : 29.0318 ( -24.0065 -29.0322 ) Norm@50keV : 1.96577E-02 ( ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 69.03 using 59 PHA bins. # Reduced chi-squared = 1.233 for 56 degrees of freedom # Null hypothesis probability = 1.133859e-01 Photon flux (15-150 keV) in 1 sec: 2.26632 ( -0.17893 0.17664 ) ph/cm2/s Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = 4.776 sec. Hardness ratio (energy fluence ratio) = 0.825866809365
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = 2.253626e-07 S(50-150 keV) = 1.4952888e-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 = -3.004419539939238E-01, IMY = 1.912158196150189E-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: -239.432000 -0.384000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9831 -15.6390 0.4 22.0 118.2 7.2207 30.9 0.2 Sco X-1 254.3773 35.4716 5.5 41.6 10.3 0.6766 2.1 8.7 Her X-1 255.9545 -37.9673 2.6 45.4 130.9 -4.1943 -4.4 7.5 4U 1700-377 256.6170 -36.4165 5.3 44.5 128.9 -1.7821 -2.2 8.8 GX 349+2 268.3976 -1.3710 6.2 38.4 72.8 1.4078 1.8 5.2 SW J1753.5-0127 203.0348 45.4840 3.4 50.7 -44.4 4.0695 3.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -0.384000 5.896000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.8700 -15.4979 5.9 21.8 118.2 -0.0629 -2.0 10.6 Sco X-1 254.4854 35.2477 14.2 41.4 10.6 0.0360 0.8 5.8 Her X-1 255.8421 -37.7705 7.7 45.2 130.8 -0.1748 -1.5 8.2 4U 1700-377 256.5542 -36.5519 0.0 44.6 129.1 0.1125 0.9 9.6 GX 349+2 268.3368 -1.5708 5.1 38.4 73.2 -0.2212 -2.3 7.3 SW J1753.5-0127 257.2546 -35.5677 2.3 44.2 127.6 0.6056 5.0 ------ UNKNOWN 245.5618 -48.2567 2.2 50.7 146.5 0.7824 5.4 ------ UNKNOWN 219.3631 -44.7038 2.2 46.3 170.3 0.3116 5.2 ------ UNKNOWN 214.0937 -33.3361 2.6 37.1 -177.9 0.1657 4.4 ------ UNKNOWN 214.2366 -11.1198 0.4 19.6 -147.5 0.7838 29.3 ------ UNKNOWN 195.7320 -14.0264 2.4 37.0 -134.9 0.2038 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 52.068580 962.655900 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 186.4962 -62.7907 5.8 55.3 175.9 4.9012 2.0 4.6 GX 301-2 244.9912 -15.6343 0.4 30.2 82.9 30.1499 32.4 0.8 Sco X-1 207.6280 47.4892 3.7 58.9 -24.3 12.1356 3.2 ------ UNKNOWN 186.7748 27.6056 4.5 47.0 -53.1 7.8035 2.6 ------ UNKNOWN