TDRSS lightcurve for Trigger=1293340
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 06 Mar 25 16:43:33 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1293340, Seg_Num: 0
GRB_RA: 354.730d {+23h 38m 55s} (J2000),
355.066d {+23h 40m 16s} (current),
354.059d {+23h 36m 14s} (1950)
GRB_DEC: -47.993d {-47d 59' 35"} (J2000),
-47.854d {-47d 51' 12"} (current),
-48.270d {-48d 16' 12"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 9571 [cnts] Image_Peak=1146 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 148 E_range: 25-100 keV
BKG_INTEN: 16522 [cnts]
BKG_TIME: 59396.80 SOD {16:29:56.80} UT
BKG_DUR: 8 [sec]
GRB_DATE: 20740 TJD; 65 DOY; 25/03/06
GRB_TIME: 59408.70 SOD {16:30:08.70} UT
GRB_PHI: -37.17 [deg]
GRB_THETA: 49.61 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 169.91 [sigma]
IMAGE_SIGNIF: 22.45 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 +8 -100 +0 -73 +0
SUN_POSTN: 347.45d {+23h 09m 48s} -5.38d {-05d 22' 47"}
SUN_DIST: 42.97 [deg] Sun_angle= -0.5 [hr] (East of Sun)
MOON_POSTN: 74.64d {+04h 58m 33s} +27.90d {+27d 54' 16"}
MOON_DIST: 103.86 [deg]
MOON_ILLUM: 50 [%]
GAL_COORDS: 332.22,-64.80 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 332.16,-41.09 [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 = 262.76,-16.39 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 06 Mar 25 16:48:39 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1293340, Seg_Num: 0
GRB_RA: 354.730d {+23h 38m 55s} (J2000),
355.066d {+23h 40m 16s} (current),
354.059d {+23h 36m 14s} (1950)
GRB_DEC: -47.993d {-47d 59' 35"} (J2000),
-47.854d {-47d 51' 12"} (current),
-48.270d {-48d 16' 12"} (1950)
GRB_DATE: 20740 TJD; 65 DOY; 25/03/06
GRB_TIME: 59408.70 SOD {16:30:08.70} UT
TRIGGER_INDEX: 148
GRB_PHI: -37.17 [deg]
GRB_THETA: 49.61 [deg]
DELTA_TIME: -69.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 169.91 [sigma]
IMAGE_SIGNIF: 22.45 [sigma]
LC_URL: sw01293340000msb.lc
GCN template for BAT paragraph
Click here!
At 16:30:08 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 250306 ***A*** (trigger=1293340). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 354.730, -47.993 which is
RA(J2000) = 23h 38m 55s
Dec(J2000) = -47d 59' 35"
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 ~13578 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: 179.072 s +/- 61.7963 s
Estimated T50 duration: 179.072 s +/- 96.3588 s
Estimated Peak Interval: MET 762971444.48000002 +/- 0.500000 s
Estimated background rate 1: 4031.691 near MET 762971430.528000 s
Estimated background rate 2: 7535.645 near MET 762971625.024000 s
Estimated total duration: 179.072 s (for data selection)
(from MET 762971441.856000 to MET 762971620.928000)
Estimated total fluence: -122364.382230 count
Created GTI with 32 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 354.730 -47.993 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 354.730 -47.993
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 3 6 16 332.563380 41.816695
Obj: 2025 3 6 16 341.758997 -0.344389
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2025 3 6 16 295.562930 26.492365
Obj: 2025 3 6 16 323.438264 -6.908998
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2025 3 6 16 292.115284 21.203651
Obj: 2025 3 6 16 320.691894 -11.324126
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2025 3 6 16 272.152110 -10.078193
Obj: 2025 3 6 16 314.525831 -25.480071
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2025 3 6 16 321.574957 -45.859265
Obj: 2025 3 6 16 347.778056 -9.237029
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2025 3 6 16 198.359445 -59.790568
Obj: 2025 3 6 16 355.602434 -76.509832
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2025 3 6 16 53.887265 39.371733
Obj: 2025 3 6 16 20.570385 8.392656
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2025 3 6 16 211.132589 61.649729
Obj: 2025 3 6 16 322.432986 65.742341
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1293340/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:
Thu Mar 6 11:39:42 EST 2025