TDRSS lightcurve for Trigger=1217734
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 27 Feb 24 05:48:54 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1217734, Seg_Num: 0
GRB_RA: 84.062d {+05h 36m 15s} (J2000),
84.425d {+05h 37m 42s} (current),
83.311d {+05h 33m 15s} (1950)
GRB_DEC: +21.754d {+21d 45' 15"} (J2000),
+21.768d {+21d 46' 04"} (current),
+21.724d {+21d 43' 25"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=4354 [image_cnts]
TRIGGER_DUR: 64.000 [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: 20367 TJD; 58 DOY; 24/02/27
GRB_TIME: 20839.01 SOD {05:47:19.01} UT
GRB_PHI: -98.82 [deg]
GRB_THETA: 0.16 [deg]
SOLN_STATUS: 0x41D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 17.68 [sigma]
MERIT_PARAMS: +0 +0 +100 +6 +1 +5 +0 +1 +27 +0
SUN_POSTN: 339.78d {+22h 39m 07s} -8.52d {-08d 31' 15"}
SUN_DIST: 106.69 [deg] Sun_angle= -7.0 [hr] (East of Sun)
MOON_POSTN: 187.16d {+12h 28m 40s} -2.29d {-02d 17' 40"}
MOON_DIST: 102.68 [deg]
MOON_ILLUM: 94 [%]
GAL_COORDS: 184.99, -5.59 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 84.48, -1.57 [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 matches a source in the on-board catalog: Num=27733=(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 = 221.86,-11.24 [deg].
COMMENTS:
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 27 Feb 24 06:13:50 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 9085451, Seg_Num: 6
GRB_RA: 84.062d {+05h 36m 15s} (J2000),
84.425d {+05h 37m 42s} (current),
83.311d {+05h 33m 15s} (1950)
GRB_DEC: +21.754d {+21d 45' 15"} (J2000),
+21.768d {+21d 46' 04"} (current),
+21.724d {+21d 43' 25"} (1950)
GRB_DATE: 20367 TJD; 58 DOY; 24/02/27
GRB_TIME: 20839.01 SOD {05:47:19.01} UT
TRIGGER_INDEX: 20000
GRB_PHI: -98.82 [deg]
GRB_THETA: 0.16 [deg]
DELTA_TIME: 28740.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x41D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 0.00 [sigma]
LC_URL: sw01217734000msb.lc
GCN template for BAT paragraph
Click here!
At 05:47:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 240227 ***A*** (trigger=1217734). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 84.062, +21.754 which is
RA(J2000) = 05h 36m 15s
Dec(J2000) = +21d 45' 15"
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 ~828 counts/sec (15-350 keV), at ~3 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: 4320.813 near MET 730705752.960000 s
Estimated background rate 2: 4320.813 near MET 730705752.960000 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 84.062 21.754 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 84.062 21.754
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 27 6 197.959993 -58.385830
Obj: 2024 2 27 6 104.257057 17.366408
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2024 2 27 6 130.083413 -57.483183
Obj: 2024 2 27 6 90.566432 43.959446
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2024 2 27 6 124.399834 -52.460545
Obj: 2024 2 27 6 85.407183 48.946045
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2024 2 27 6 88.758817 -22.432522
Obj: 2024 2 27 6 109.530379 83.890918
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2024 2 27 6 101.484951 33.839556
Obj: 2024 2 27 6 228.093345 18.946976
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2024 2 27 6 47.962674 33.522986
Obj: 2024 2 27 6 263.831988 31.473603
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2024 2 27 6 267.188352 -23.004748
Obj: 2024 2 27 6 141.322497 -28.616979
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2024 2 27 6 336.810090 -48.479243
Obj: 2024 2 27 6 108.709831 -11.386068
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1217734/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:
Tue Feb 27 01:14:22 EST 2024