TDRSS lightcurve for Trigger=1033144
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 17 Feb 21 08:11:36 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1033144, Seg_Num: 0
GRB_RA: 277.646d {+18h 30m 35s} (J2000),
277.931d {+18h 31m 43s} (current),
276.973d {+18h 27m 54s} (1950)
GRB_DEC: -6.735d {-06d 44' 05"} (J2000),
-6.719d {-06d 43' 08"} (current),
-6.770d {-06d 46' 13"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 385 [cnts] Image_Peak=87 [image_cnts]
TRIGGER_DUR: 0.008 [sec]
TRIGGER_INDEX: 10109 E_range: 15-50 keV
BKG_INTEN: 25255 [cnts]
BKG_TIME: 29469.47 SOD {08:11:09.47} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19262 TJD; 48 DOY; 21/02/17
GRB_TIME: 29481.31 SOD {08:11:21.31} UT
GRB_PHI: -163.59 [deg]
GRB_THETA: 22.38 [deg]
SOLN_STATUS: 0x1000000D
RATE_SIGNIF: 70.90 [sigma]
IMAGE_SIGNIF: 12.46 [sigma]
MERIT_PARAMS: +0 +0 +124 -7 +1 +2 +0 +1 -60 +0
SUN_POSTN: 331.02d {+22h 04m 06s} -11.86d {-11d 51' 34"}
SUN_DIST: 52.58 [deg] Sun_angle= 3.5 [hr] (West of Sun)
MOON_POSTN: 31.54d {+02h 06m 09s} +9.05d {+09d 03' 01"}
MOON_DIST: 114.28 [deg]
MOON_ILLUM: 28 [%]
GAL_COORDS: 24.56, 1.54 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 277.92, 16.49 [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 matches a source in the on-board catalog: Num=10211=(null) (probably an AT_Slot).
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is not a GRB.
COMMENTS: This is an interesting source.
COMMENTS: This trigger occurred at longitude,latitude = 74.18,-17.08 [deg].
COMMENTS:
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 17 Feb 21 08:26:35 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1033144, Seg_Num: 0
GRB_RA: 277.646d {+18h 30m 35s} (J2000),
277.931d {+18h 31m 43s} (current),
276.973d {+18h 27m 54s} (1950)
GRB_DEC: -6.735d {-06d 44' 05"} (J2000),
-6.719d {-06d 43' 08"} (current),
-6.770d {-06d 46' 13"} (1950)
GRB_DATE: 19262 TJD; 48 DOY; 21/02/17
GRB_TIME: 29481.48 SOD {08:11:21.48} UT
TRIGGER_INDEX: 10109
GRB_PHI: -163.59 [deg]
GRB_THETA: 22.38 [deg]
DELTA_TIME: 79.00 [sec]
TRIGGER_DUR: 0.008 [sec]
SOLN_STATUS: 0xD
RATE_SIGNIF: 70.90 [sigma]
IMAGE_SIGNIF: 12.46 [sigma]
LC_URL: sw01033144000msb.lc
GCN template for BAT paragraph
Click here!
At 08:11:21 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210217 ***A*** (trigger=1033144). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 277.646, -6.735 which is
RA(J2000) = 18h 30m 35s
Dec(J2000) = -06d 44' 05"
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 ~5835 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: 33.152 s +/- 1.024 s
Estimated T50 duration: 23.04 s +/- 5.50409 s
Estimated Peak Interval: MET 635242308.41599989 +/- 0.500000 s
Estimated background rate 1: 5220.002 near MET 635242296.384000 s
Estimated background rate 2: 5093.506 near MET 635242418.944000 s
Estimated total duration: 35.2 s (for data selection)
(from MET 635242307.968000 to MET 635242343.168000)
Estimated total fluence: 2808.910302 count
Created GTI with 4 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 277.646 -6.735 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 277.646 -6.735
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 17 8 242.749575 -46.029609
Obj: 2021 2 17 8 276.615058 -2.546738
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 2 17 8 194.536822 -69.636420
Obj: 2021 2 17 8 258.274925 -30.468192
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 2 17 8 177.703637 -68.510703
Obj: 2021 2 17 8 253.222796 -34.947775
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 2 17 8 95.781783 -51.330346
Obj: 2021 2 17 8 227.109959 -71.380150
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 2 17 8 82.286584 10.251972
Obj: 2021 2 17 8 53.830602 -34.891571
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 2 17 8 67.734899 10.353145
Obj: 2021 2 17 8 103.107341 -29.691424
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 2 17 8 284.290342 1.243360
Obj: 2021 2 17 8 317.467374 44.950729
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 2 17 8 307.270680 -29.580188
Obj: 2021 2 17 8 271.757538 10.339625
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1033144/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:
Wed Feb 17 03:27:03 EST 2021