TDRSS lightcurve for Trigger=1223072
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 19 Apr 24 12:25:31 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1223072, Seg_Num: 0
GRB_RA: 325.877d {+21h 43m 30s} (J2000),
326.182d {+21h 44m 44s} (current),
325.248d {+21h 40m 59s} (1950)
GRB_DEC: +4.234d {+04d 14' 01"} (J2000),
+4.346d {+04d 20' 44"} (current),
+4.004d {+04d 00' 14"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 11136 [cnts] Image_Peak=294 [image_cnts]
TRIGGER_DUR: 4.096 [sec]
TRIGGER_INDEX: 475 E_range: 25-100 keV
BKG_INTEN: 96464 [cnts]
BKG_TIME: 44518.70 SOD {12:21:58.70} UT
BKG_DUR: 40 [sec]
GRB_DATE: 20419 TJD; 110 DOY; 24/04/19
GRB_TIME: 44572.33 SOD {12:22:52.33} UT
GRB_PHI: 11.85 [deg]
GRB_THETA: 39.96 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 8.48 [sigma]
IMAGE_SIGNIF: 8.25 [sigma]
MERIT_PARAMS: +1 +0 +0 +2 +2 -1 +0 +0 -47 +0
SUN_POSTN: 27.85d {+01h 51m 25s} +11.45d {+11d 26' 57"}
SUN_DIST: 61.39 [deg] Sun_angle= 4.1 [hr] (West of Sun)
MOON_POSTN: 163.59d {+10h 54m 21s} +10.30d {+10d 17' 53"}
MOON_DIST: 157.31 [deg]
MOON_ILLUM: 83 [%]
GAL_COORDS: 60.21,-34.88 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 329.62, 16.87 [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 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 = 264.24,17.01 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 19 Apr 24 12:41:58 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1223072, Seg_Num: 0
GRB_RA: 325.877d {+21h 43m 30s} (J2000),
326.182d {+21h 44m 44s} (current),
325.248d {+21h 40m 59s} (1950)
GRB_DEC: +4.234d {+04d 14' 01"} (J2000),
+4.346d {+04d 20' 44"} (current),
+4.004d {+04d 00' 14"} (1950)
GRB_DATE: 20419 TJD; 110 DOY; 24/04/19
GRB_TIME: 44572.33 SOD {12:22:52.33} UT
TRIGGER_INDEX: 475
GRB_PHI: 11.85 [deg]
GRB_THETA: 39.96 [deg]
DELTA_TIME: 77.00 [sec]
TRIGGER_DUR: 4.096 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 8.48 [sigma]
IMAGE_SIGNIF: 8.25 [sigma]
LC_URL: sw01223072000msb.lc
GCN template for BAT paragraph
Click here!
At 12:22:52 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 240419 ***A*** (trigger=1223072). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 325.877, +4.234 which is
RA(J2000) = 21h 43m 30s
Dec(J2000) = +04d 14' 01"
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 ~2049 counts/sec (15-350 keV), at ~119 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: 77.824 s +/- 50.8851 s
Estimated T50 duration: 8.192 s +/- 4.096 s
Estimated Peak Interval: MET 735222324.73599994 +/- 0.500000 s
Estimated background rate 1: 4921.779 near MET 735222192.800000 s
Estimated background rate 2: 4605.580 near MET 735222369.792000 s
Estimated total duration: 144.064 s (for data selection)
(from MET 735222203.200000 to MET 735222347.264000)
Estimated total fluence: 26445.280116 count
Created GTI with 13 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 325.877 4.234 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 325.877 4.234
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 4 19 12 268.983700 17.092907
Obj: 2024 4 19 12 334.012741 52.582754
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2024 4 19 12 248.800493 -11.365721
Obj: 2024 4 19 12 289.995947 36.205730
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2024 4 19 12 244.747560 -15.345788
Obj: 2024 4 19 12 286.769682 30.891449
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2024 4 19 12 219.442284 -50.650577
Obj: 2024 4 19 12 264.529672 -2.370285
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2024 4 19 12 62.360773 -55.068357
Obj: 2024 4 19 12 307.035973 -50.718057
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2024 4 19 12 126.421598 -25.563350
Obj: 2024 4 19 12 201.392590 -49.132749
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2024 4 19 12 311.925696 65.776369
Obj: 2024 4 19 12 67.718215 42.065758
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2024 4 19 12 250.393530 9.857767
Obj: 2024 4 19 12 196.447702 54.105935
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1223072/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:
Fri Apr 19 08:42:43 EDT 2024