TDRSS lightcurve for Trigger=1165354
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 23 Apr 23 19:08:55 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1165354, Seg_Num: 0
GRB_RA: 122.605d {+08h 10m 25s} (J2000),
122.860d {+08h 11m 26s} (current),
122.059d {+08h 08m 14s} (1950)
GRB_DEC: -21.920d {-21d 55' 12"} (J2000),
-21.990d {-21d 59' 25"} (current),
-21.771d {-21d 46' 16"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 15544 [cnts] Image_Peak=368 [image_cnts]
TRIGGER_DUR: 12.160 [sec]
TRIGGER_INDEX: 478 E_range: 25-100 keV
BKG_INTEN: 74623 [cnts]
BKG_TIME: 68776.84 SOD {19:06:16.84} UT
BKG_DUR: 64 [sec]
GRB_DATE: 20057 TJD; 113 DOY; 23/04/23
GRB_TIME: 68875.46 SOD {19:07:55.46} UT
GRB_PHI: -62.72 [deg]
GRB_THETA: 4.98 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 8.60 [sigma]
IMAGE_SIGNIF: 7.30 [sigma]
MERIT_PARAMS: +1 +0 +0 +4 +2 -3 +0 +1 +10 +0
SUN_POSTN: 31.15d {+02h 04m 36s} +12.64d {+12d 38' 19"}
SUN_DIST: 96.25 [deg] Sun_angle= -6.1 [hr] (East of Sun)
MOON_POSTN: 76.24d {+05h 04m 57s} +26.55d {+26d 33' 16"}
MOON_DIST: 66.28 [deg]
MOON_ILLUM: 14 [%]
GAL_COORDS: 241.49, 6.24 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 131.32,-40.80 [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 = 342.20,-5.10 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 23 Apr 23 19:26:12 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1165354, Seg_Num: 0
GRB_RA: 122.605d {+08h 10m 25s} (J2000),
122.860d {+08h 11m 26s} (current),
122.059d {+08h 08m 14s} (1950)
GRB_DEC: -21.920d {-21d 55' 12"} (J2000),
-21.990d {-21d 59' 25"} (current),
-21.771d {-21d 46' 16"} (1950)
GRB_DATE: 20057 TJD; 113 DOY; 23/04/23
GRB_TIME: 68875.46 SOD {19:07:55.46} UT
TRIGGER_INDEX: 478
GRB_PHI: -62.72 [deg]
GRB_THETA: 4.98 [deg]
DELTA_TIME: 58.00 [sec]
TRIGGER_DUR: 12.160 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 8.60 [sigma]
IMAGE_SIGNIF: 7.30 [sigma]
LC_URL: sw01165354000msb.lc
GCN template for BAT paragraph
Click here!
At 19:07:55 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230423 ***A*** (trigger=1165354). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 122.605, -21.920 which is
RA(J2000) = 08h 10m 25s
Dec(J2000) = -21d 55' 12"
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 ~875 counts/sec (15-350 keV), at ~1 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: 24.576 s +/- 1.09363 s
Estimated T50 duration: 12.8 s +/- 0.896 s
Estimated Peak Interval: MET 703969707.58399987 +/- 0.500000 s
Estimated background rate 1: 2303.438 near MET 703969694.400000 s
Estimated background rate 2: 2307.242 near MET 703969813.248000 s
Estimated total duration: 27.776 s (for data selection)
(from MET 703969705.600000 to MET 703969733.376000)
Estimated total fluence: 3843.401084 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 122.605 -21.920 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 122.605 -21.920
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: 2023 4 23 19 50.963042 53.785489
Obj: 2023 4 23 19 303.487448 4.777337
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2023 4 23 19 342.606411 70.172373
Obj: 2023 4 23 19 285.428233 -17.613970
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2023 4 23 19 329.438889 66.583945
Obj: 2023 4 23 19 282.054692 -22.908700
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2023 4 23 19 270.341266 41.086175
Obj: 2023 4 23 19 280.327749 -54.784408
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2023 4 23 19 267.112715 -20.135286
Obj: 2023 4 23 19 19.924500 -34.110252
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2023 4 23 19 239.821506 -18.117869
Obj: 2023 4 23 19 103.300556 -57.508492
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2023 4 23 19 99.762782 8.561207
Obj: 2023 4 23 19 354.418369 39.029043
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2023 4 23 19 137.657105 35.993515
Obj: 2023 4 23 19 275.347575 37.989047
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1165354/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:
Sun Apr 23 15:26:43 EDT 2023