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 01:00:14 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger559132
======================================================================
Trigger: 00559132 Segment: 000
BAT Trigger Time: 394016114.176 [s; MET]
Trigger Stop: 394016118.272 [s; MET]
UTC: 2013-06-27T08:55:03.453140 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 184.445459834887 Dec: -37.0861049218717 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.41
Image Trigger?: NO
Rate S/N Ratio: 10.6770782520313 [ if not an image trigger ]
Image S/N Ratio: 7.41
Analysis Position: [ source = BAT ]
RA: 184.445459834887 Dec: -37.0861049218717 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 184.418873854437 Dec: -37.0711998171645 [deg; J2000]
{ 12h 17m 40.5s , -37d 04' 16.3" }
+/- 2.26928644644789 [arcmin] (estimated 90% radius based on SNR)
+/- 1.12134208230286 [arcmin] (formal 1-sigma fit error)
SNR: 9.43419973771709
Angular difference between the analysis and refined position is 1.555434 arcmin
Partial Coding Fraction: 0.2011719 [ including projection effects ]
Duration
T90: 18.0480000376701 +/- 5.47298824080632
Measured from: -8.16799998283386
to: 9.88000005483627 [s; relative to TRIGTIME]
T50: 7.43999999761581 +/- 4.59365128796123
Measured from: -2.16799998283386
to: 5.27200001478195 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.59600001573563
to: 2.59600001573563 [s; relative to TRIGTIME]
Total Fluence
Measured from: -10.2799999713898
to: 10.0400000214577 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.183137 0.589613 0.385896 -0.011976
0.072707 0.071637 0.063258 0.052502 [error]
Peak 0.034091 0.079171 0.078225 -0.000485
0.016299 0.016557 0.016040 0.012743 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 20.320 -10.280 10.040
T90 18.048 -8.168 9.880
T50 7.440 -2.168 5.272
Peak 1.000 1.596 2.596
====== 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 -1.750 -0.265 0.252 - - - 4.09e-03 -7.59e-04 7.52e-04 98.460 57
CPL 1.078 -1.346 1.719 51.923 -7.936 10.667 1.19e-01 -1.19e-01 7.79e-01 81.830 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 -1.491 -0.388 0.379 - - - 1.40e-02 -3.52e-03 3.52e-03 57.030 57
CPL 0.633 -1.828 3.099 65.851 -16.719 77.945 1.43e-01 -1.43e-01 3.89e+00 52.860 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 1.34e-07 2.12e-07 2.51e-07 5.80e-07 7.66e-07 1.18e-06 erg/cm2
90%_error_low -3.34e-08 -3.80e-08 -5.71e-08 -2.21e-07 -1.44e-07 -2.90e-07 erg/cm2
90%_error_hi 3.55e-08 3.79e-08 5.78e-08 2.91e-07 1.46e-07 3.43e-07 erg/cm2
Peak flux PL 5.69e-01 5.76e-01 4.10e-01 4.64e-01 1.74e+00 2.02e+00 ph/cm2/s
90%_error_low -2.22e-01 -1.60e-01 -1.19e-01 -2.19e-01 -4.55e-01 -5.08e-01 ph/cm2/s
90%_error_hi 2.54e-01 1.59e-01 1.18e-01 2.97e-01 4.59e-01 5.09e-01 ph/cm2/s
Fluence CPL 8.76e-08 2.78e-07 2.80e-07 5.29e-08 6.94e-07 7.02e-07 erg/cm2
90%_error_low -3.55e-08 -5.08e-08 -8.02e-08 -3.92e-08 -1.32e-07 -1.39e-07 erg/cm2
90%_error_hi 3.97e-08 5.25e-08 7.80e-08 9.24e-08 1.38e-07 1.53e-07 erg/cm2
Peak flux CPL 3.57e-01 6.64e-01 5.01e-01 1.16e-01 1.62e+00 1.64e+00 ph/cm2/s
90%_error_low -2.30e-01 -2.00e-01 -1.58e-01 -1.16e-01 -4.52e-01 -4.67e-01 ph/cm2/s
90%_error_hi 2.97e-01 2.07e-01 1.62e-01 2.72e-01 4.66e-01 5.07e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 184.4189 -37.0712 0.0204 48.3667 -144.0243 1.3000272 9.434 TRIG_00559132 Foreground time interval of the image: -10.280 10.040 (delta_t = 20.320 [sec]) Background time interval of the image: -239.176 -10.280 (delta_t = 228.896 [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 -10.280 sec. to 10.040 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.75039 ( -0.262697 0.255014 ) Norm@50keV : 4.08684E-03 ( -0.000757801 0.000752675 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 98.46 using 59 PHA bins. # Reduced chi-squared = 1.727 for 57 degrees of freedom # Null hypothesis probability = 5.385711e-04 Photon flux (15-150 keV) in 20.32 sec: 0.552855 ( -0.099733 0.100279 ) ph/cm2/s Energy fluence (15-150 keV) : 7.66009e-07 ( -1.4409e-07 1.45947e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -10.280 sec. to 10.040 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 1.07809 ( -1.32236 1.74234 ) Epeak [keV] : 51.9235 ( -7.99516 10.608 ) Norm@50keV : 0.118951 ( -0.116804 0.780766 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 81.83 using 59 PHA bins. # Reduced chi-squared = 1.461 for 56 degrees of freedom # Null hypothesis probability = 1.379570e-02 Photon flux (15-150 keV) in 20.32 sec: 0.513571 ( -0.095077 0.099208 ) ph/cm2/s Energy fluence (15-150 keV) : 6.94391e-07 ( -1.32343e-07 1.38414e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 1.596 sec. to 2.596 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.49095 ( -0.387964 0.37959 ) Norm@50keV : 1.39527E-02 ( -0.00352466 0.00351967 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 57.03 using 59 PHA bins. # Reduced chi-squared = 1.000 for 57 degrees of freedom # Null hypothesis probability = 4.740418e-01 Photon flux (15-150 keV) in 1 sec: 1.73779 ( -0.4547 0.45935 ) ph/cm2/s Energy fluence (15-150 keV) : 1.32568e-07 ( -3.4923e-08 3.52738e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.596 sec. to 2.596 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 0.632816 ( -1.82815 3.09968 ) Epeak [keV] : 65.8506 ( -16.7231 77.942 ) Norm@50keV : 0.142605 ( -0.142559 3.88574 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 52.86 using 59 PHA bins. # Reduced chi-squared = 0.9439 for 56 degrees of freedom # Null hypothesis probability = 5.944558e-01 Photon flux (15-150 keV) in 1 sec: 1.61919 ( -0.45155 0.46599 ) ph/cm2/s Energy fluence (15-150 keV) : 1.23643e-07 ( -3.56739e-08 3.69845e-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 = -9.104329731323985E-01, IMY = 6.608788957985384E-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: -239.176000 -10.280000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9831 -15.6454 0.3 17.7 101.9 11.3510 42.1 0.4 Sco X-1 254.3750 35.2889 6.0 50.8 16.1 1.8119 1.9 5.2 Her X-1 255.8822 -37.8712 8.0 38.1 131.9 0.8678 1.4 5.2 4U 1700-377 256.2576 -36.4579 4.0 37.4 129.8 1.7294 2.9 8.8 GX 349+2 262.9128 -24.7268 4.3 36.6 108.1 1.7730 2.7 5.4 GX 1+4 263.0826 -33.7688 5.6 40.5 121.2 -1.8798 -2.1 6.1 GX 354-0 226.2139 7.2677 3.0 16.5 -18.4 0.8877 3.8 ------ UNKNOWN 209.0932 -26.5055 3.4 25.1 -148.0 0.9356 3.4 ------ UNKNOWN 190.1610 -38.4027 3.2 44.9 -148.5 1.6690 3.6 ------ UNKNOWN 179.8869 -54.8989 3.8 59.5 -161.7 6.4148 3.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -10.280000 10.040000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9368 -15.6251 4.3 17.6 101.8 -0.1686 -2.7 2.6 Sco X-1 254.5279 35.2993 316.6 50.9 16.3 0.0080 0.0 4.3 Her X-1 256.1160 -37.8709 6.2 38.2 131.7 -0.2496 -1.9 6.3 4U 1700-377 256.4626 -36.2872 16.4 37.4 129.4 0.0902 0.7 8.3 GX 349+2 262.9384 -24.8347 4.7 36.6 108.3 -0.3564 -2.5 6.6 GX 1+4 263.0002 -33.7067 6.9 40.4 121.2 0.3302 1.7 7.7 GX 354-0 267.6754 0.2295 2.0 40.4 67.2 1.1895 5.7 ------ UNKNOWN 184.4194 -37.0728 1.2 48.4 -144.0 1.2908 9.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 150.924590 707.724600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9697 -15.6373 0.3 34.0 155.5 29.5518 35.2 0.6 Sco X-1 256.0690 -37.8508 6.8 36.9 113.2 2.5300 1.7 3.9 4U 1700-377 256.4112 -36.3488 4.5 35.5 114.5 3.3708 2.5 4.6 GX 349+2 263.0512 -24.9060 2.7 23.2 121.2 2.6471 4.3 9.9 GX 1+4 264.7079 -44.5980 7.7 39.3 98.5 -2.8196 -1.5 9.0 4U 1735-44 268.2345 -1.5834 5.3 11.8 -159.3 1.1389 2.2 11.2 SW J1753.5-0127 270.2413 -25.0958 3.5 19.6 106.1 2.0580 3.3 2.5 GX 5-1 270.3764 -25.6034 7.8 20.0 105.1 0.9471 1.5 9.3 GRS 1758-258 273.9956 -14.0102 2.1 8.2 116.4 2.8207 5.5 1.7 GX 17+2 275.9528 -30.4084 10.0 23.3 88.7 0.8751 1.2 2.9 H1820-303 285.2128 -24.7833 0.0 18.7 64.0 1.1286 2.0 12.7 HT1900.1-2455 288.7947 10.9000 1.7 20.7 -68.0 5.0157 6.9 2.7 GRS 1915+105 262.9964 -33.8347 16.9 30.3 109.2 0.7297 0.7 0.4 GX 354-0 244.1571 -35.7327 2.8 42.5 125.7 9.5113 4.1 ------ UNKNOWN 319.5209 5.9803 3.5 42.8 -24.1 3.0330 3.3 ------ UNKNOWN 225.4690 19.4029 4.8 58.7 -159.3 9.6560 2.4 ------ UNKNOWN 320.4225 22.7505 4.2 50.6 -44.6 11.1802 2.8 ------ UNKNOWN 258.2225 33.7426 2.7 45.3 -121.3 12.0177 4.4 ------ UNKNOWN 272.7144 34.1488 3.0 41.7 -104.6 11.8712 3.8 ------ UNKNOWN 244.0700 31.7304 2.8 51.1 -135.6 13.6699 4.1 ------ UNKNOWN