TDRSS lightcurve for Trigger=1418333
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 29 Nov 25 11:12:34 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1418333, Seg_Num: 0
GRB_RA: 174.520d {+11h 38m 05s} (J2000),
174.847d {+11h 39m 23s} (current),
173.890d {+11h 35m 34s} (1950)
GRB_DEC: -20.927d {-20d 55' 38"} (J2000),
-21.071d {-21d 04' 15"} (current),
-20.651d {-20d 39' 01"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 22114 [cnts] Image_Peak=374 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 158 E_range: 50-350 keV
BKG_INTEN: 144133 [cnts]
BKG_TIME: 39891.22 SOD {11:04:51.22} UT
BKG_DUR: 8 [sec]
GRB_DATE: 21008 TJD; 333 DOY; 25/11/29
GRB_TIME: 39908.38 SOD {11:05:08.38} UT
GRB_PHI: 134.49 [deg]
GRB_THETA: 19.10 [deg]
SOLN_STATUS: 0xC3
RATE_SIGNIF: 17.57 [sigma]
IMAGE_SIGNIF: 6.66 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +3 -4 +0 +0 -41 +0
SUN_POSTN: 245.69d {+16h 22m 45s} -21.56d {-21d 33' 17"}
SUN_DIST: 65.36 [deg] Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN: 352.43d {+23h 29m 44s} -2.36d {-02d 21' 44"}
MOON_DIST: 156.45 [deg]
MOON_ILLUM: 63 [%]
GAL_COORDS: 280.79, 38.77 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 183.71,-21.30 [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 during a high background rate interval.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 29 Nov 25 11:23:02 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1418333, Seg_Num: 0
GRB_RA: 174.520d {+11h 38m 05s} (J2000),
174.847d {+11h 39m 23s} (current),
173.890d {+11h 35m 34s} (1950)
GRB_DEC: -20.927d {-20d 55' 38"} (J2000),
-21.071d {-21d 04' 15"} (current),
-20.651d {-20d 39' 01"} (1950)
GRB_DATE: 21008 TJD; 333 DOY; 25/11/29
GRB_TIME: 39908.38 SOD {11:05:08.38} UT
TRIGGER_INDEX: 158
GRB_PHI: 134.49 [deg]
GRB_THETA: 19.10 [deg]
DELTA_TIME: 44.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0xC3
RATE_SIGNIF: 17.57 [sigma]
IMAGE_SIGNIF: 6.66 [sigma]
LC_URL: sw01418333000msb.lc
GCN template for BAT paragraph
Click here!
At 11:05:08 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 251129 ***A*** (trigger=1418333). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 174.520, -20.927 which is
RA(J2000) = 11h 38m 05s
Dec(J2000) = -20d 55' 38"
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 ~11169 counts/sec (15-350 keV), at ~4 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 T90 duration: 24.832 s +/- 3.40104 s
Estimated T50 duration: 24.832 s +/- 10.5099 s
Estimated Peak Interval: MET 786107145.47199988 +/- 0.500000 s
Estimated background rate 1: 26118.438 near MET 786107123.200000 s
Estimated background rate 2: 36405.382 near MET 786107150.784000 s
Estimated total duration: 24.832 s (for data selection)
(from MET 786107124.800000 to MET 786107149.632000)
Estimated total fluence: -8990.080515 count
Created GTI with 11 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 174.520 -20.927 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 174.520 -20.927
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: 2025 11 29 11 287.377761 -13.016711
Obj: 2025 11 29 11 340.365569 27.409975
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2025 11 29 11 273.198079 -39.041640
Obj: 2025 11 29 11 309.129897 17.004402
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2025 11 29 11 268.571618 -44.110069
Obj: 2025 11 29 11 305.461653 11.981104
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2025 11 29 11 280.879815 -78.701755
Obj: 2025 11 29 11 287.865582 -13.469188
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2025 11 29 11 43.950342 -22.705058
Obj: 2025 11 29 11 329.872253 -31.486723
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2025 11 29 11 87.046926 -36.168617
Obj: 2025 11 29 11 218.029105 -73.682914
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2025 11 29 11 326.325614 31.700383
Obj: 2025 11 29 11 42.599401 26.737190
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2025 11 29 11 285.977925 15.958426
Obj: 2025 11 29 11 234.011741 75.260456
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1418333/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 Nov 29 06:24:03 EST 2025