TDRSS lightcurve for Trigger=1034721
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 26 Feb 21 04:54:27 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1034721, Seg_Num: 0
GRB_RA: 124.138d {+08h 16m 33s} (J2000),
124.562d {+08h 18m 15s} (current),
123.132d {+08h 12m 32s} (1950)
GRB_DEC: +57.577d {+57d 34' 38"} (J2000),
+57.511d {+57d 30' 39"} (current),
+57.732d {+57d 43' 53"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 3526 [cnts] Image_Peak=241 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 149 E_range: 25-100 keV
BKG_INTEN: 18656 [cnts]
BKG_TIME: 17021.42 SOD {04:43:41.42} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19271 TJD; 57 DOY; 21/02/26
GRB_TIME: 17037.23 SOD {04:43:57.23} UT
GRB_PHI: -8.34 [deg]
GRB_THETA: 41.88 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 22.62 [sigma]
IMAGE_SIGNIF: 11.81 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 +1 +0 +0 +55 +0
SUN_POSTN: 339.49d {+22h 37m 56s} -8.64d {-08d 38' 14"}
SUN_DIST: 124.20 [deg] Sun_angle= -9.7 [hr] (East of Sun)
MOON_POSTN: 146.86d {+09h 47m 27s} +18.17d {+18d 10' 21"}
MOON_DIST: 42.67 [deg]
MOON_ILLUM: 98 [%]
GAL_COORDS: 159.95, 33.92 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 112.05, 36.72 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This Notice was delayed by more than 60 sec past the end of the trigger integration interval;
COMMENTS: probably due to it occurring during a Malindi downlink session.
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 = 258.11,20.11 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 26 Feb 21 05:08:39 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1034721, Seg_Num: 0
GRB_RA: 124.138d {+08h 16m 33s} (J2000),
124.562d {+08h 18m 15s} (current),
123.132d {+08h 12m 32s} (1950)
GRB_DEC: +57.577d {+57d 34' 38"} (J2000),
+57.511d {+57d 30' 39"} (current),
+57.732d {+57d 43' 53"} (1950)
GRB_DATE: 19271 TJD; 57 DOY; 21/02/26
GRB_TIME: 17037.23 SOD {04:43:57.23} UT
TRIGGER_INDEX: 149
GRB_PHI: -8.34 [deg]
GRB_THETA: 41.88 [deg]
DELTA_TIME: 20.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 22.62 [sigma]
IMAGE_SIGNIF: 11.81 [sigma]
LC_URL: sw01034721000msb.lc
GCN template for BAT paragraph
Click here!
At 04:43:57 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210226 ***A*** (trigger=1034721). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 124.138, +57.577 which is
RA(J2000) = 08h 16m 33s
Dec(J2000) = +57d 34' 38"
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 ~3378 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
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: 56.064 s +/- 2.89772 s
Estimated T50 duration: 17.28 s +/- 0.768 s
Estimated Peak Interval: MET 636007464.89599991 +/- 0.500000 s
Estimated background rate 1: 4735.462 near MET 636007451.040000 s
Estimated background rate 2: 4663.710 near MET 636007594.624000 s
Estimated total duration: 77.248 s (for data selection)
(from MET 636007462.080000 to MET 636007539.328000)
Estimated total fluence: 11272.643433 count
Created GTI with 10 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 124.138 57.577 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 124.138 57.577
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 26 5 169.128318 -59.238713
Obj: 2021 2 26 5 143.894300 63.462458
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 2 26 5 113.370365 -46.667084
Obj: 2021 2 26 5 185.718440 63.961045
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 2 26 5 109.851823 -41.366026
Obj: 2021 2 26 5 193.475220 64.766444
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 2 26 5 83.775462 -8.383005
Obj: 2021 2 26 5 211.103808 37.997775
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 2 26 5 112.334466 46.186705
Obj: 2021 2 26 5 218.635584 -33.717742
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 2 26 5 32.059106 41.418045
Obj: 2021 2 26 5 208.252439 14.211886
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 2 26 5 259.164493 -36.119246
Obj: 2021 2 26 5 143.739058 24.767000
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 2 26 5 359.532456 -51.048918
Obj: 2021 2 26 5 161.927567 -2.750301
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1034721/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:
Fri Feb 26 00:09:04 EST 2021