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: Sun Nov 13 11:05:16 EST 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1036139
======================================================================
Trigger: 01036139 Segment: 000
BAT Trigger Time: 636799385.024 [s; MET]
Trigger Stop: 636799387.072 [s; MET]
UTC: 2021-03-07T08:42:38.399080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 119.190405236675 Dec: -66.9627274070328 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.9
Image Trigger?: NO
Rate S/N Ratio: 10.3923048454133 [ if not an image trigger ]
Image S/N Ratio: 7.9
Analysis Position: [ source = BAT ]
RA: 119.190405236675 Dec: -66.9627274070328 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 119.231232737874 Dec: -66.9680638180886 [deg; J2000]
{ 07h 56m 55.5s , -66d 58' 05.0" }
+/- 2.16939212196735 [arcmin] (estimated 90% radius based on SNR)
+/- 1.04764530363335 [arcmin] (formal 1-sigma fit error)
SNR: 10.0608677207313
Angular difference between the analysis and refined position is 1.010580 arcmin
Partial Coding Fraction: 0.796875 [ including projection effects ]
Duration
T90: 270.81199991703 +/- 74.8005222211069
Measured from: -125.259999990463
to: 145.551999926567 [s; relative to TRIGTIME]
T50: 50.6279999017715 +/- 61.5222967046276
Measured from: -2.49600005149841
to: 48.1319998502731 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.27199995517731
to: 2.27199995517731 [s; relative to TRIGTIME]
Total Fluence
Measured from: -149.81200003624
to: 174.531999945641 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.332042 1.631455 1.255665 0.262013
0.137632 0.139704 0.122743 0.113000 [error]
Peak 0.024181 0.036133 0.055374 0.007074
0.008464 0.009158 0.008137 0.006958 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 324.344 -149.812 174.532
T90 270.812 -125.260 145.552
T50 50.628 -2.496 48.132
Peak 1.000 1.272 2.272
====== 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 -1.541 -0.163 0.162 - - - 8.92e-04 -8.54e-05 8.47e-05 44.140 57
CPL -1.433 -0.336 0.548 247.152 -247.152 -247.152 1.02e-03 -3.23e-04 9.30e-04 44.170 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 -1.276 -0.328 0.327 - - - 8.37e-03 -1.74e-03 1.74e-03 79.960 57
CPL 2.314 -2.588 -2.314 71.005 -10.685 31.084 2.59e-01 -2.59e-01 1.19e+02 72.840 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 3.84e-07 6.88e-07 9.45e-07 2.70e-06 2.73e-06 4.71e-06 erg/cm2
90%_error_low -5.75e-08 -6.46e-08 -1.20e-07 -6.59e-07 -2.84e-07 -7.70e-07 erg/cm2
90%_error_hi 5.93e-08 6.43e-08 1.20e-07 7.97e-07 2.88e-07 8.82e-07 erg/cm2
Peak flux PL 2.78e-01 3.20e-01 2.64e-01 3.66e-01 9.94e-01 1.23e+00 ph/cm2/s
90%_error_low -9.48e-02 -7.52e-02 -6.30e-02 -1.49e-01 -2.11e-01 -2.61e-01 ph/cm2/s
90%_error_hi 1.06e-01 7.42e-02 6.22e-02 1.96e-01 2.12e-01 2.65e-01 ph/cm2/s
Fluence CPL 3.82e-07 6.91e-07 9.47e-07 2.52e-06 2.72e-06 4.24e-06 erg/cm2
90%_error_low -6.39e-08 -6.75e-08 -1.20e-07 -1.57e-06 -3.25e-07 -1.32e-06 erg/cm2
90%_error_hi 4.40e-08 8.08e-08 1.23e-07 3.57e-07 2.95e-07 7.08e-07 erg/cm2
Peak flux CPL 8.72e-02 3.25e-01 3.66e-01 7.06e-02 8.41e-01 8.50e-01 ph/cm2/s
90%_error_low -8.72e-02 -1.73e-01 -9.71e-02 -7.06e-02 -2.63e-01 -2.71e-01 ph/cm2/s
90%_error_hi 1.58e-01 1.09e-01 1.11e-01 1.24e-01 2.51e-01 2.75e-01 ph/cm2/s
======================================================================
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 119.2312 -66.9681 0.0190 29.9679 -8.0631 2.4328422 10.061 TRIG_01036139 Foreground time interval of the image: -116.323 28.077 (delta_t = 144.400 [sec]) Background time interval of the image:
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 -149.812 sec. to 174.532 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.54082 ( -0.163285 0.162288 ) Norm@50keV : 8.91777E-04 ( -8.54146e-05 8.47099e-05 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 44.14 using 59 bins. Reduced chi-squared = 0.774386 # Null hypothesis probability of 8.93e-01 with 57 degrees of freedom Photon flux (15-150 keV) in 324.3 sec: 0.112599 ( -0.010371 0.01038 ) ph/cm2/s Energy fluence (15-150 keV) : 2.72657e-06 ( -2.84452e-07 2.88217e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -149.812 sec. to 174.532 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.53858 ( -0.299894 0.583427 ) Epeak [keV] : 9977.59 ( -9971.93 -9971.93 ) Norm@50keV : 8.94242E-04 ( -0.000198069 0.00105498 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 44.14 using 59 bins. Reduced chi-squared = 0.788214 # Null hypothesis probability of 8.74e-01 with 56 degrees of freedom Photon flux (15-150 keV) in 324.3 sec: 0.112419 ( -0.010705 0.010525 ) ph/cm2/s Energy fluence (15-150 keV) : 2.71617e-06 ( -3.25185e-07 2.95357e-07 ) ergs/cm2
1-s peak spectrum fit
Power-law model
Time interval is from 1.272 sec. to 2.272 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.27577 ( -0.327471 0.326771 ) Norm@50keV : 8.36634E-03 ( -0.00173602 0.00173554 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 79.96 using 59 bins. Reduced chi-squared = 1.40281 # Null hypothesis probability of 2.41e-02 with 57 degrees of freedom Photon flux (15-150 keV) in 1 sec: 0.993843 ( -0.211149 0.212027 ) ph/cm2/s Energy fluence (15-150 keV) : 8.31802e-08 ( -1.86237e-08 1.88151e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.272 sec. to 2.272 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 2.31447 ( -2.62634 -2.35283 ) Epeak [keV] : 71.0055 ( -10.6594 31.1087 ) Norm@50keV : 0.259488 ( -0.278709 119.323 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 72.84 using 59 bins. Reduced chi-squared = 1.30071 # Null hypothesis probability of 6.47e-02 with 56 degrees of freedom Photon flux (15-150 keV) in 1 sec: 0.841271 ( -0.262513 0.250609 ) ph/cm2/s Energy fluence (15-150 keV) : 7.49722e-08 ( -1.9084e-08 1.96101e-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 = 5.709029961973128E-01, IMY = 8.087606207230236E-02
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image: -116.323400 28.076600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 135.6105 -40.5650 11.5 41.3 37.0 0.4591 1.0 3.8 Vela X-1 170.3799 -60.6332 14.1 12.1 36.0 0.1534 0.8 2.0 Cen X-3 186.2969 -62.6801 7.4 4.4 43.2 0.2944 1.6 11.3 GX 301-2 256.0288 -37.9237 3.6 43.6 -154.3 1.2579 3.2 5.2 4U 1700-377 256.4758 -36.3507 8.1 45.1 -155.1 -0.5448 -1.4 4.8 GX 349+2 262.9749 -24.6743 5.1 58.0 -156.5 -2.7988 -2.3 4.7 GX 1+4 264.7898 -44.4994 8.9 42.2 -140.7 0.5005 1.3 3.6 4U 1735-44 263.1011 -33.7127 0.0 50.3 -150.8 -1.1413 -2.1 9.2 GX 354-0 225.4429 -14.0626 3.5 53.9 158.9 3.4872 3.3 ------ UNKNOWN 110.2688 -38.5203 3.3 54.1 16.7 3.6790 3.5 ------ UNKNOWN 118.1990 -45.1893 3.2 45.3 18.0 1.5097 3.6 ------ UNKNOWN 119.2311 -66.9680 1.1 30.0 -8.1 2.4333 10.1 ------ UNKNOWN 255.6782 -48.7797 1.5 34.9 -144.0 2.1945 7.7 ------ UNKNOWN 262.7901 -27.0765 3.7 55.9 -155.3 2.6824 3.1 ------ UNKNOWN 17.1784 -70.3439 2.5 45.8 -57.0 3.7723 4.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image: 80.076590 716.754500 720.976000 903.306000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 135.5664 -40.4819 4.0 28.0 67.8 4.3158 2.9 4.7 Vela X-1 170.6002 -60.7792 8.0 22.7 139.7 1.8078 1.4 12.6 Cen X-3 186.6844 -62.6295 6.7 27.6 154.2 -2.0586 -1.7 8.5 GX 301-2 119.0015 -20.1227 4.1 46.8 40.4 8.0255 2.8 ------ UNKNOWN 99.4570 -14.4418 4.0 54.1 16.8 13.8616 2.9 ------ UNKNOWN 161.8976 -63.8000 4.2 17.7 140.6 3.2089 2.8 ------ UNKNOWN 71.4319 -17.9645 3.1 57.7 -15.8 15.9261 3.8 ------ UNKNOWN 65.4401 -34.3580 3.6 44.7 -30.5 6.3562 3.2 ------ UNKNOWN