TDRSS lightcurve for Trigger=1033264
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 23:26:06 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1033264, Seg_Num: 0
GRB_RA: 97.610d {+06h 30m 26s} (J2000),
98.180d {+06h 32m 43s} (current),
96.260d {+06h 25m 02s} (1950)
GRB_DEC: +68.715d {+68d 42' 53"} (J2000),
+68.699d {+68d 41' 55"} (current),
+68.748d {+68d 44' 54"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 3791 [cnts] Image_Peak=296 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 150 E_range: 25-100 keV
BKG_INTEN: 18443 [cnts]
BKG_TIME: 84325.47 SOD {23:25:25.47} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19262 TJD; 48 DOY; 21/02/17
GRB_TIME: 84342.30 SOD {23:25:42.30} UT
GRB_PHI: 174.95 [deg]
GRB_THETA: 45.68 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 30.16 [sigma]
IMAGE_SIGNIF: 13.81 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 +3 +0 +0 +39 +0
SUN_POSTN: 331.64d {+22h 06m 33s} -11.64d {-11d 38' 09"}
SUN_DIST: 113.56 [deg] Sun_angle= -8.4 [hr] (East of Sun)
MOON_POSTN: 38.59d {+02h 34m 22s} +11.97d {+11d 57' 60"}
MOON_DIST: 68.10 [deg]
MOON_ILLUM: 33 [%]
GAL_COORDS: 146.11, 23.29 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 93.92, 45.38 [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 = 50.77,20.58 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 17 Feb 21 23:42:29 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1033264, Seg_Num: 0
GRB_RA: 97.610d {+06h 30m 26s} (J2000),
98.180d {+06h 32m 43s} (current),
96.260d {+06h 25m 02s} (1950)
GRB_DEC: +68.715d {+68d 42' 53"} (J2000),
+68.699d {+68d 41' 55"} (current),
+68.748d {+68d 44' 54"} (1950)
GRB_DATE: 19262 TJD; 48 DOY; 21/02/17
GRB_TIME: 84342.30 SOD {23:25:42.30} UT
TRIGGER_INDEX: 150
GRB_PHI: 174.95 [deg]
GRB_THETA: 45.68 [deg]
DELTA_TIME: 77.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 30.16 [sigma]
IMAGE_SIGNIF: 13.81 [sigma]
LC_URL: sw01033264000msb.lc
GCN template for BAT paragraph
Click here!
At 23:25:42 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210217 ***A*** (trigger=1033264). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 97.610, +68.715 which is
RA(J2000) = 06h 30m 26s
Dec(J2000) = +68d 42' 53"
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 ~3492 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: 3.584 s +/- 0.256 s
Estimated T50 duration: 1.152 s +/- 0.128 s
Estimated Peak Interval: MET 635297169.34399998 +/- 0.500000 s
Estimated background rate 1: 4659.332 near MET 635297157.120000 s
Estimated background rate 2: 4644.926 near MET 635297264.384000 s
Estimated total duration: 4.608 s (for data selection)
(from MET 635297168.640000 to MET 635297173.248000)
Estimated total fluence: 3831.238777 count
Created GTI with 7 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 97.610 68.715 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 97.610 68.715
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 23 77.285149 -2.860446
Obj: 2021 2 17 23 203.812795 52.612069
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 2 17 23 56.292684 25.318984
Obj: 2021 2 17 23 205.270960 34.162585
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 2 17 23 50.873898 28.393079
Obj: 2021 2 17 23 205.591744 33.498879
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 2 17 23 10.315789 58.029443
Obj: 2021 2 17 23 198.329627 8.019568
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 2 17 23 258.310833 40.046949
Obj: 2021 2 17 23 182.108602 -52.554057
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 2 17 23 293.300684 11.957011
Obj: 2021 2 17 23 175.147169 13.524675
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 2 17 23 108.795886 -51.657455
Obj: 2021 2 17 23 170.928477 48.862114
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 2 17 23 79.897030 5.784416
Obj: 2021 2 17 23 192.798820 -12.662033
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1033264/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 18:42:43 EST 2021