TDRSS lightcurve for Trigger=1215857
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 17 Feb 24 18:01:45 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1215857, Seg_Num: 0
GRB_RA: 83.380d {+05h 33m 31s} (J2000),
83.743d {+05h 34m 58s} (current),
82.629d {+05h 30m 31s} (1950)
GRB_DEC: +21.856d {+21d 51' 20"} (J2000),
+21.871d {+21d 52' 14"} (current),
+21.822d {+21d 49' 18"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=1445 [image_cnts]
TRIGGER_DUR: 128.000 [sec]
TRIGGER_INDEX: 20000 E_range: 15-50 keV
BKG_INTEN: 0 [cnts]
BKG_TIME: 0.00 SOD {00:00:00.00} UT
BKG_DUR: 0 [sec]
GRB_DATE: 20357 TJD; 48 DOY; 24/02/17
GRB_TIME: 64767.06 SOD {17:59:27.06} UT
GRB_PHI: -1.35 [deg]
GRB_THETA: 51.49 [deg]
SOLN_STATUS: 0x513
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 7.75 [sigma]
MERIT_PARAMS: +1 +0 +0 +7 +1 -2 -5 +1 +42 +0
SUN_POSTN: 330.72d {+22h 02m 52s} -11.97d {-11d 58' 15"}
SUN_DIST: 115.62 [deg] Sun_angle= -7.5 [hr] (East of Sun)
MOON_POSTN: 70.09d {+04h 40m 22s} +26.43d {+26d 25' 42"}
MOON_DIST: 13.25 [deg]
MOON_ILLUM: 62 [%]
GAL_COORDS: 184.57, -6.07 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 83.86, -1.44 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is an image trigger. (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)
COMMENTS: A point_source was found.
COMMENTS: This does not match any source in the on-board catalog.
COMMENTS: This matches a source in the ground catalog: Crab, delta=0.283 [deg].
COMMENTS: This is not a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 44.88,13.13 [deg].
COMMENTS:
COMMENTS: This trigger occured while the StarTracker had lost lock, so it is possibly bogus.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 17 Feb 24 18:16:06 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1215857, Seg_Num: 0
GRB_RA: 83.380d {+05h 33m 31s} (J2000),
83.743d {+05h 34m 58s} (current),
82.629d {+05h 30m 31s} (1950)
GRB_DEC: +21.856d {+21d 51' 20"} (J2000),
+21.871d {+21d 52' 14"} (current),
+21.822d {+21d 49' 18"} (1950)
GRB_DATE: 20357 TJD; 48 DOY; 24/02/17
GRB_TIME: 64767.06 SOD {17:59:27.06} UT
TRIGGER_INDEX: 20000
GRB_PHI: -1.35 [deg]
GRB_THETA: 51.49 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 128.000 [sec]
SOLN_STATUS: 0x513
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 7.75 [sigma]
LC_URL: sw01215857000msb.lc
GCN template for BAT paragraph
Click here!
At 17:59:27 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 240217 ***A*** (trigger=1215857). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 83.380, +21.856 which is
RA(J2000) = 05h 33m 31s
Dec(J2000) = +21d 51' 20"
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 ~785 counts/sec (15-350 keV), at ~6 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
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 background rate 1: 3581.312 near MET 729885680.960000 s
Estimated background rate 2: 3581.312 near MET 729885680.960000 s
Estimated total fluence: 0.000000 count
Created GTI with 1 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 83.380 21.856 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 83.380 21.856
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: 2024 2 17 18 11.396899 38.289037
Obj: 2024 2 17 18 244.492833 3.471055
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2024 2 17 18 327.364317 40.226599
Obj: 2024 2 17 18 222.511293 -23.005327
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2024 2 17 18 321.678860 35.939012
Obj: 2024 2 17 18 217.095871 -24.956688
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2024 2 17 18 288.785390 14.584237
Obj: 2024 2 17 18 176.536946 -48.247140
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2024 2 17 18 300.274883 -21.807372
Obj: 2024 2 17 18 94.551563 -37.928637
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2024 2 17 18 246.725295 -48.554476
Obj: 2024 2 17 18 116.544214 0.349635
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2024 2 17 18 68.517631 12.662972
Obj: 2024 2 17 18 269.091338 49.043397
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2024 2 17 18 139.626963 66.947248
Obj: 2024 2 17 18 254.418720 -17.471377
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1215857/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:
Sat Feb 17 13:16:22 EST 2024