TDRSS lightcurve for Trigger=1217729
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 05:08:56 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1217729, Seg_Num: 0
GRB_RA: 245.369d {+16h 21m 28s} (J2000),
245.712d {+16h 22m 51s} (current),
244.658d {+16h 18m 38s} (1950)
GRB_DEC: -15.618d {-15d 37' 03"} (J2000),
-15.673d {-15d 40' 24"} (current),
-15.500d {-15d 30' 00"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=4050 [image_cnts]
TRIGGER_DUR: 80.000 [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: 17207.01 SOD {04:46:47.01} UT
GRB_PHI: -76.73 [deg]
GRB_THETA: 13.27 [deg]
SOLN_STATUS: 0x10000413
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 14.68 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 +3 +0 +0 +3 +0
SUN_POSTN: 339.75d {+22h 39m 00s} -8.53d {-08d 31' 52"}
SUN_DIST: 91.55 [deg] Sun_angle= 6.3 [hr] (West of Sun)
MOON_POSTN: 186.88d {+12h 27m 30s} -2.14d {-02d 08' 17"}
MOON_DIST: 59.47 [deg]
MOON_ILLUM: 94 [%]
GAL_COORDS: 359.37, 23.51 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 246.21, 5.81 [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 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 does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 9.97,-5.53 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 27 Feb 24 05:16:19 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1217729, Seg_Num: 0
GRB_RA: 245.369d {+16h 21m 28s} (J2000),
245.712d {+16h 22m 51s} (current),
244.658d {+16h 18m 38s} (1950)
GRB_DEC: -15.618d {-15d 37' 03"} (J2000),
-15.673d {-15d 40' 24"} (current),
-15.500d {-15d 30' 00"} (1950)
GRB_DATE: 20367 TJD; 58 DOY; 24/02/27
GRB_TIME: 17207.01 SOD {04:46:47.01} UT
TRIGGER_INDEX: 20000
GRB_PHI: -76.73 [deg]
GRB_THETA: 13.27 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 80.000 [sec]
SOLN_STATUS: 0x413
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 14.68 [sigma]
LC_URL: sw01217729000msb.lc
GCN template for BAT paragraph
Click here!
At 04:46:47 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 240227 ***A*** (trigger=1217729). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 245.369, -15.618 which is
RA(J2000) = 16h 21m 28s
Dec(J2000) = -15d 37' 03"
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 ~1625 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: 106.752 s +/- 17.8834 s
Estimated T50 duration: 106.752 s +/- 48.0914 s
Estimated Peak Interval: MET 730702162.43199992 +/- 0.500000 s
Estimated background rate 1: 5374.628 near MET 730702034.816000 s
Estimated background rate 2: 5407.852 near MET 730702193.152000 s
Estimated total duration: 106.752 s (for data selection)
(from MET 730702053.632000 to MET 730702160.384000)
Estimated total fluence: -9449.556555 count
Created GTI with 3 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 245.369 -15.618 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 245.369 -15.618
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 5 169.181770 -59.139567
Obj: 2024 2 27 5 281.370845 -11.003783
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2024 2 27 5 113.498898 -46.614229
Obj: 2024 2 27 5 265.318368 -38.217037
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2024 2 27 5 109.969901 -41.313846
Obj: 2024 2 27 5 260.135826 -43.009774
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2024 2 27 5 83.877195 -8.361584
Obj: 2024 2 27 5 247.678578 -79.732475
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2024 2 27 5 112.441580 46.115329
Obj: 2024 2 27 5 49.829636 -25.843330
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2024 2 27 5 32.134438 41.504143
Obj: 2024 2 27 5 92.062532 -31.560972
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2024 2 27 5 259.062022 -36.058205
Obj: 2024 2 27 5 320.447838 35.530835
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2024 2 27 5 359.511499 -51.150935
Obj: 2024 2 27 5 281.554751 11.471119
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1217729/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 00:16:43 EST 2024