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 v2.48
Process Start Time: Fri Jul 29 22:37:38 EDT 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1062336
======================================================================
Trigger: 01062336 Segment: 000
BAT Trigger Time: 649462896 [s; MET]
Trigger Stop: 649462984 [s; MET]
UTC: 2021-07-31T22:21:08.531520 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 300.313626634788 Dec: -28.0420279574902 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.45
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 9.45
Analysis Position: [ source = BAT ]
RA: 300.313626634788 Dec: -28.0420279574902 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 300.310579539394 Dec: -28.0555623932543 [deg; J2000]
{ 20h 01m 14.5s , -28d 03' 20.0" }
+/- 1.65464348874518 [arcmin] (estimated 90% radius based on SNR)
+/- 0.564292014475115 [arcmin] (formal 1-sigma fit error)
SNR: 14.8143797585764
Angular difference between the analysis and refined position is 0.827941 arcmin
Partial Coding Fraction: 0.390625 [ including projection effects ]
Duration
T90: 22.5119999647141 +/- 2.78522750238739
Measured from: 0.46399998664856
to: 22.9759999513626 [s; relative to TRIGTIME]
T50: 10.5199999809265 +/- 1.67874714133445
Measured from: 5.41999995708466
to: 15.9399999380112 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 11.2799999713898
to: 12.2799999713898 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.779999971389771
to: 25.4960000514984 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.400446 1.098970 1.271953 0.281086
0.075919 0.072051 0.062644 0.050762 [error]
Peak 0.020323 0.089670 0.080452 0.010119
0.014278 0.015336 0.012877 0.010048 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 26.276 -0.780 25.496
T90 22.512 0.464 22.976
T50 10.520 5.420 15.940
Peak 1.000 11.280 12.280
====== 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 -1.011 -0.109 0.111 - - - 8.37e-03 -5.55e-04 5.52e-04 67.960 57
CPL 0.249 -0.553 0.635 106.543 -17.004 36.585 2.82e-02 -1.14e-02 2.21e-02 50.280 56
=== 1-s peak 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 -1.012 -0.325 0.353 - - - 1.39e-02 -2.90e-03 2.86e-03 51.790 57
CPL 0.049 -1.200 1.939 111.751 -40.636 -111.751 4.08e-02 -4.08e-02 2.14e-01 50.160 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 1.78e-07 4.42e-07 8.78e-07 4.34e-06 2.37e-06 5.83e-06 erg/cm2
90%_error_low -2.38e-08 -3.67e-08 -5.85e-08 -6.24e-07 -1.55e-07 -6.50e-07 erg/cm2
90%_error_hi 2.51e-08 3.65e-08 5.83e-08 6.95e-07 1.55e-07 7.12e-07 erg/cm2
Peak flux PL 3.61e-01 4.86e-01 4.81e-01 8.59e-01 1.61e+00 2.19e+00 ph/cm2/s
90%_error_low -1.40e-01 -1.29e-01 -9.89e-02 -3.18e-01 -3.39e-01 -4.44e-01 ph/cm2/s
90%_error_hi 1.64e-01 1.27e-01 9.81e-02 4.25e-01 3.43e-01 4.57e-01 ph/cm2/s
Fluence CPL 1.23e-07 4.61e-07 9.90e-07 1.31e-06 2.24e-06 2.89e-06 erg/cm2
90%_error_low -2.91e-08 -4.25e-08 -7.55e-08 -4.39e-07 -1.68e-07 -4.55e-07 erg/cm2
90%_error_hi 3.15e-08 4.24e-08 7.67e-08 7.35e-07 1.68e-07 7.27e-07 erg/cm2
Peak flux CPL 2.70e-01 5.09e-01 5.43e-01 3.71e-01 1.54e+00 1.69e+00 ph/cm2/s
90%_error_low -1.57e-01 -1.48e-01 -1.27e-01 -3.71e-01 -3.46e-01 -4.39e-01 ph/cm2/s
90%_error_hi 1.01e-01 1.49e-01 1.32e-01 6.40e-01 3.53e-01 7.34e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 300.3106 -28.0556 0.0130 29.7794 112.8747 3.1830718 14.814 TRIG_01062336 Foreground time interval of the image: -0.780 25.496 (delta_t = 26.276 [sec]) Background time interval of the image: -17.299 -0.780 (delta_t = 16.519 [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 -0.780 sec. to 25.496 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.01115 ( -0.108505 0.111184 ) Norm@50keV : 8.37368E-03 ( -0.000554792 0.000552079 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 67.96 using 59 bins. Reduced chi-squared = 1.19228 # Null hypothesis probability of 1.52e-01 with 57 degrees of freedom Photon flux (15-150 keV) in 26.28 sec: 0.964643 ( -0.065708 0.066027 ) ph/cm2/s Energy fluence (15-150 keV) : 2.37053e-06 ( -1.54756e-07 1.55191e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.780 sec. to 25.496 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 0.248924 ( -0.552825 0.635167 ) Epeak [keV] : 106.543 ( -17.0036 36.585 ) Norm@50keV : 2.82316E-02 ( -0.0113646 0.0220546 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 50.28 using 59 bins. Reduced chi-squared = 0.897857 # Null hypothesis probability of 6.90e-01 with 56 degrees of freedom Photon flux (15-150 keV) in 26.28 sec: 0.905799 ( -0.069365 0.069868 ) ph/cm2/s Energy fluence (15-150 keV) : 2.24448e-06 ( -1.682e-07 1.67678e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 11.280 sec. to 12.280 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.0125 ( -0.325192 0.353015 ) Norm@50keV : 1.39483E-02 ( -0.00290277 0.00286056 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 51.79 using 59 bins. Reduced chi-squared = 0.908596 # Null hypothesis probability of 6.70e-01 with 57 degrees of freedom Photon flux (15-150 keV) in 1 sec: 1.60699 ( -0.33943 0.34336 ) ph/cm2/s Energy fluence (15-150 keV) : 1.50183e-07 ( -3.06824e-08 3.08051e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 11.280 sec. to 12.280 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 0.049304 ( -1.20019 1.93904 ) Epeak [keV] : 111.751 ( -40.6356 -111.751 ) Norm@50keV : 4.07843E-02 ( -0.0407842 0.214433 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 50.16 using 59 bins. Reduced chi-squared = 0.895714 # Null hypothesis probability of 6.94e-01 with 56 degrees of freedom Photon flux (15-150 keV) in 1 sec: 1.54424 ( -0.34605 0.35254 ) ph/cm2/s Energy fluence (15-150 keV) : 1.43777e-07 ( -3.26985e-08 3.24449e-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 = -2.224347900185051E-01, IMY = -5.272262623408568E-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: -17.299400 -0.780000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 245.0286 -15.6260 0.8 23.8 -44.2 1.0822 14.9 3.0 Sco X-1 256.1980 -37.9638 2.9 12.4 -123.1 0.2415 3.9 12.3 4U 1700-377 256.5922 -36.4602 3.5 11.1 -118.6 0.2022 3.3 7.9 GX 349+2 262.8915 -24.9287 0.0 5.1 -22.2 0.0260 0.4 12.7 GX 1+4 264.5729 -44.3273 34.9 15.4 -158.9 0.0192 0.3 10.4 4U 1735-44 268.5482 -1.5584 0.0 27.5 21.0 0.1343 1.8 12.5 SW J1753.5-0127 270.1102 -25.0792 67.6 5.1 57.7 -0.0105 -0.2 9.5 GX 5-1 270.3510 -25.7624 129.1 4.8 65.0 0.0055 0.1 2.9 GRS 1758-258 274.0392 -14.1724 2517.1 16.4 43.5 -0.0002 -0.0 8.4 GX 17+2 276.0254 -30.1737 0.0 8.5 116.9 -0.0819 -1.3 12.7 H1820-303 285.2513 -24.9871 0.0 17.3 97.4 0.0341 0.5 12.4 HT1900.1-2455 288.7814 10.8381 4.4 45.3 48.1 -0.6560 -2.6 6.5 GRS 1915+105 262.8717 -33.7053 35.2 5.6 -132.4 0.0205 0.3 9.7 GX 354-0 282.7521 14.0163 2.0 45.8 38.7 1.0354 5.7 ------ UNKNOWN 303.0898 -81.5334 2.4 54.4 -169.9 0.9141 4.9 ------ UNKNOWN 221.7301 -13.7908 2.5 43.9 -63.3 1.1653 4.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -0.780000 25.496000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9531 -15.7143 3.3 23.7 -44.4 0.4856 3.5 4.7 Sco X-1 255.8419 -37.7903 4.3 12.4 -121.8 0.3244 2.7 7.6 4U 1700-377 256.6526 -36.5411 7.8 11.1 -119.3 -0.1776 -1.5 12.6 GX 349+2 262.8467 -24.7727 9.6 5.2 -21.0 0.1417 1.2 9.0 GX 1+4 264.6303 -44.4378 4.3 15.5 -159.2 -0.3073 -2.7 4.9 4U 1735-44 268.5296 -1.5633 6.8 27.5 21.1 -0.2685 -1.7 11.7 SW J1753.5-0127 270.4717 -25.1159 4.5 5.3 61.1 -0.3133 -2.6 10.4 GX 5-1 270.3832 -25.8767 6.2 4.7 66.7 -0.2258 -1.9 9.1 GRS 1758-258 274.0163 -14.1493 6.3 16.4 43.6 0.2468 1.8 6.8 GX 17+2 276.0253 -30.1736 0.0 8.5 116.8 0.2167 1.7 12.7 H1820-303 285.2513 -24.9871 0.0 17.3 97.5 -0.1137 -0.8 12.4 HT1900.1-2455 288.8651 10.9641 6.4 45.5 48.1 0.9684 1.8 4.1 GRS 1915+105 263.1323 -33.9504 2.7 5.7 -136.0 -0.5296 -4.3 10.0 GX 354-0 300.3106 -28.0556 0.8 29.8 112.9 3.1835 14.8 ------ UNKNOWN 270.0104 -44.9047 2.4 16.2 -173.1 0.5764 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 190.100590 423.300000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 256.0712 -37.8643 7.6 38.0 -74.1 -18.9916 -1.5 4.2 4U 1700-377 256.4764 -36.5416 9.6 37.6 -72.0 15.6055 1.2 7.4 GX 349+2 262.8538 -24.7698 5.2 33.5 -50.7 -16.4750 -2.2 8.6 GX 1+4 264.9267 -44.3728 6.8 32.5 -87.2 18.4896 1.7 9.1 4U 1735-44 268.3775 -1.4184 7.0 40.5 -12.0 12.4708 1.7 2.1 SW J1753.5-0127 270.0821 -25.0273 0.0 27.1 -48.2 13.9579 2.1 11.4 GX 5-1 270.4467 -25.6822 14.2 26.6 -49.4 5.4618 0.8 8.6 GRS 1758-258 273.9330 -14.1844 5.6 28.1 -23.4 -13.4551 -2.1 9.8 GX 17+2 275.8308 -30.3581 15.2 21.4 -59.6 5.0378 0.8 4.9 H1820-303 285.1689 -25.0159 16.2 13.8 -38.3 -3.4103 -0.7 9.2 HT1900.1-2455 288.7912 11.1170 0.0 40.7 25.0 -0.2884 -0.0 10.3 GRS 1915+105 262.8609 -33.7420 5.1 32.4 -67.1 -20.2052 -2.3 8.5 GX 354-0 300.8581 14.1389 3.4 42.2 43.3 36.1607 3.4 ------ UNKNOWN 327.7990 -24.4993 2.6 24.9 130.6 24.8964 4.4 ------ UNKNOWN 267.2446 13.0680 2.8 52.1 0.2 48.0326 4.1 ------ UNKNOWN 262.7807 10.6194 2.7 53.0 -6.0 55.5230 4.3 ------ UNKNOWN 259.7651 -52.2321 3.1 38.5 -97.8 65.9333 3.7 ------ UNKNOWN