TDRSS lightcurve for Trigger=1033328
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 18 Feb 21 13:35:34 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1033328, Seg_Num: 0
GRB_RA: 47.291d {+03h 09m 10s} (J2000),
47.623d {+03h 10m 30s} (current),
46.507d {+03h 06m 02s} (1950)
GRB_DEC: +35.287d {+35d 17' 14"} (J2000),
+35.367d {+35d 21' 60"} (current),
+35.097d {+35d 05' 49"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 2713 [cnts] Image_Peak=129 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 146 E_range: 25-100 keV
BKG_INTEN: 18305 [cnts]
BKG_TIME: 48901.47 SOD {13:35:01.47} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19263 TJD; 49 DOY; 21/02/18
GRB_TIME: 48919.64 SOD {13:35:19.64} UT
GRB_PHI: -25.13 [deg]
GRB_THETA: 36.20 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 7.07 [sigma]
IMAGE_SIGNIF: 7.16 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 -3 -5 +0 -9 +0
SUN_POSTN: 332.21d {+22h 08m 49s} -11.43d {-11d 25' 37"}
SUN_DIST: 85.03 [deg] Sun_angle= -5.0 [hr] (East of Sun)
MOON_POSTN: 45.25d {+03h 01m 01s} +14.51d {+14d 30' 28"}
MOON_DIST: 20.97 [deg]
MOON_ILLUM: 39 [%]
GAL_COORDS: 152.27,-19.62 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 54.64, 16.94 [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: This trigger occurred at longitude,latitude = 154.90,15.19 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 18 Feb 21 13:52:42 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1033328, Seg_Num: 0
GRB_RA: 47.291d {+03h 09m 10s} (J2000),
47.623d {+03h 10m 30s} (current),
46.507d {+03h 06m 02s} (1950)
GRB_DEC: +35.287d {+35d 17' 14"} (J2000),
+35.367d {+35d 21' 60"} (current),
+35.097d {+35d 05' 49"} (1950)
GRB_DATE: 19263 TJD; 49 DOY; 21/02/18
GRB_TIME: 48919.64 SOD {13:35:19.64} UT
TRIGGER_INDEX: 146
GRB_PHI: -25.13 [deg]
GRB_THETA: 36.20 [deg]
DELTA_TIME: -57.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 7.07 [sigma]
IMAGE_SIGNIF: 7.16 [sigma]
LC_URL: sw01033328000msb.lc
GCN template for BAT paragraph
Click here!
At 13:35:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210218 ***A*** (trigger=1033328). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 47.291, +35.287 which is
RA(J2000) = 03h 09m 10s
Dec(J2000) = +35d 17' 14"
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 ~1203 counts/sec (15-350 keV), at ~1 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: 113.536 s +/- 4.39741 s
Estimated T50 duration: 66.816 s +/- 2.90196 s
Estimated Peak Interval: MET 635348210.68799996 +/- 0.500000 s
Estimated background rate 1: 4299.271 near MET 635348126.400000 s
Estimated background rate 2: 4324.753 near MET 635348298.752000 s
Estimated total duration: 134.784 s (for data selection)
(from MET 635348131.200000 to MET 635348265.984000)
Estimated total fluence: 27583.879220 count
Created GTI with 8 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 47.291 35.287 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 47.291 35.287
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: 2021 2 18 13 294.440612 10.729869
Obj: 2021 2 18 13 210.957137 -7.516620
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 2 18 13 274.774634 -14.327576
Obj: 2021 2 18 13 184.168889 -22.834796
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 2 18 13 271.130263 -19.450737
Obj: 2021 2 18 13 178.889150 -21.304091
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 2 18 13 261.618101 -54.835286
Obj: 2021 2 18 13 145.367210 -23.133955
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 2 18 13 27.240660 -43.230977
Obj: 2021 2 18 13 123.333527 -13.672715
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 2 18 13 115.758767 -49.661676
Obj: 2021 2 18 13 111.982716 35.319737
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 2 18 13 349.677170 49.243439
Obj: 2021 2 18 13 240.629375 21.952495
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 2 18 13 264.832438 31.552724
Obj: 2021 2 18 13 250.185114 -52.521875
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1033328/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:
Thu Feb 18 08:53:02 EST 2021