TDRSS lightcurve for Trigger=990358
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 17 Aug 20 01:53:40 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 990358, Seg_Num: 0
GRB_RA: 154.131d {+10h 16m 31s} (J2000),
154.361d {+10h 17m 27s} (current),
153.572d {+10h 14m 17s} (1950)
GRB_DEC: -33.921d {-33d 55' 16"} (J2000),
-34.025d {-34d 01' 28"} (current),
-33.671d {-33d 40' 16"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 742 [cnts] Image_Peak=64 [image_cnts]
TRIGGER_DUR: 0.256 [sec]
TRIGGER_INDEX: 94 E_range: 25-100 keV
BKG_INTEN: 23185 [cnts]
BKG_TIME: 6790.52 SOD {01:53:10.52} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19078 TJD; 230 DOY; 20/08/17
GRB_TIME: 6801.08 SOD {01:53:21.08} UT
GRB_PHI: -23.10 [deg]
GRB_THETA: 19.71 [deg]
SOLN_STATUS: 0x83
RATE_SIGNIF: 19.67 [sigma]
IMAGE_SIGNIF: 6.58 [sigma]
MERIT_PARAMS: +1 +0 +0 -2 +2 -4 +0 +0 -67 +0
SUN_POSTN: 146.93d {+09h 47m 43s} +13.31d {+13d 18' 31"}
SUN_DIST: 47.86 [deg] Sun_angle= -0.5 [hr] (East of Sun)
MOON_POSTN: 120.40d {+08h 01m 36s} +23.09d {+23d 05' 16"}
MOON_DIST: 65.61 [deg]
MOON_ILLUM: 5 [%]
GAL_COORDS: 269.68, 18.76 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 171.60,-41.00 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is a rate trigger.
COMMENTS: A point_source was found.
COMMENTS: This does not match any source in the on-board catalog.
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.
COMMENTS: This trigger occurred at longitude,latitude = 143.09,1.16 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 17 Aug 20 02:16:56 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 990358, Seg_Num: 0
GRB_RA: 154.131d {+10h 16m 31s} (J2000),
154.361d {+10h 17m 27s} (current),
153.572d {+10h 14m 17s} (1950)
GRB_DEC: -33.921d {-33d 55' 16"} (J2000),
-34.025d {-34d 01' 28"} (current),
-33.671d {-33d 40' 16"} (1950)
GRB_DATE: 19078 TJD; 230 DOY; 20/08/17
GRB_TIME: 6801.08 SOD {01:53:21.08} UT
TRIGGER_INDEX: 94
GRB_PHI: -23.10 [deg]
GRB_THETA: 19.71 [deg]
DELTA_TIME: 64.00 [sec]
TRIGGER_DUR: 0.256 [sec]
SOLN_STATUS: 0x83
RATE_SIGNIF: 19.67 [sigma]
IMAGE_SIGNIF: 6.58 [sigma]
LC_URL: sw00990358000msb.lc
GCN template for BAT paragraph
Click here!
At 01:53:21 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 200817 ***A*** (trigger=990358). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 154.131, -33.921 which is
RA(J2000) = 10h 16m 31s
Dec(J2000) = -33d 55' 16"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a [**double-peaked**]
structure with a duration of about TTT sec. The peak count rate
was ~1414 counts/sec (15-350 keV), at ~0 sec after the trigger.
Test version of draft template
Initial TDRSS lightcurve and spacecraft attitude plot
TDRSS lightcurve from T0-30 to T0+50 (zoom in)
TDRSS light curve from T0-1 to T0+2 (More zoom in)
1.6s binned TDRSS light curve
Tilan's background subtracted TDRSS light curves
Extended TDRSS light curve and spacecraft attitude plot(s)
Extended TDRSS lc No.1
Extended TDRSS lc No.2
Extended TDRSS lc No.3
Extended TDRSS lc No.4
TDRSS extended lightcurve from T0-1 to T0+2
T50 and T90 calculation
******************************************
battblocks v1.18
------------------------------------------
Input Data: bat_raw_lc.fits
Output GTI: bb.gti
Events to Skip: 128 Changepoint log(prob) Prior: 6.000000
Internal Tick: 1.000000e-04 s
Lookback time: 0 s
Bkg. Subtract?: yes (for fluence/T50/T90 calculations)
------------------------------------------
Estimated T90 duration: 0.256 s +/- 0.286217 s
Estimated T50 duration: 0.128 s +/- 0.128 s
Estimated Peak Interval: MET 619322026.88000000 +/- 0.500000 s
Estimated background rate 1: 5722.720 near MET 619322014.912000 s
Estimated background rate 2: 5788.020 near MET 619322120.064000 s
Estimated total duration: 0.384 s (for data selection)
(from MET 619322026.624000 to MET 619322027.008000)
Estimated total fluence: 291.161927 count
Created GTI with 3 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 154.131 -33.921 0.083
No match
Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)
python compare_catalog.py 154.131 -33.921
No match
Link to SIMBAD
Click here for the SIMBAD search!
Frank's UVOT result
Click here!
Frank's UVOT Blinking images
Click here!
Elevation angle of GRB/Sun at the ground telescope locations
GSFC, Greenbelt, Maryland
TimeUT Azimuth Elevation
Sun: 2020 8 17 2 128.821930 -20.962700
Obj: 2020 8 17 2 78.315823 -45.585487
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2020 8 17 2 105.279832 0.616171
Obj: 2020 8 17 2 60.193608 -17.259299
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2020 8 17 2 102.036172 5.911648
Obj: 2020 8 17 2 58.088269 -13.781756
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2020 8 17 2 91.320541 38.932827
Obj: 2020 8 17 2 39.311158 20.799399
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2020 8 17 2 183.391358 45.316130
Obj: 2020 8 17 2 290.860358 81.248809
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2020 8 17 2 316.048273 62.725230
Obj: 2020 8 17 2 337.233406 17.176395
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2020 8 17 2 195.133947 -46.731385
Obj: 2020 8 17 2 333.575725 -84.075650
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2020 8 17 2 76.018757 -47.376164
Obj: 2020 8 17 2 40.124196 -10.285696
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger990358/tdrss_ql/
bat_raw_lc.fits : TDRSS FITS light curve from GCN
gcn_position.txt : GCN BAT position notice
ratelc_tdrss.qdp : QDP file of the TDRSS light curve
tdrss_lc.gif : GIF TDRSS light curve
sc_att.qdp : QDP file of the spacecraft attitude
sc_att.gif : GIF spacecraft attitude
bb.gti : Bayesian block GTI file (battblocks)
dur.gti : Duration GTI file (battblocks)
battblocks.log : Output log of battblocks
Plot creation:
Sun Aug 16 22:17:27 EDT 2020