TDRSS lightcurve for Trigger=1299088
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 27 Mar 25 07:31:43 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1299088, Seg_Num: 0
GRB_RA: 248.197d {+16h 32m 47s} (J2000),
248.280d {+16h 33m 07s} (current),
248.035d {+16h 32m 09s} (1950)
GRB_DEC: +61.595d {+61d 35' 43"} (J2000),
+61.543d {+61d 32' 36"} (current),
+61.699d {+61d 41' 57"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=1424 [image_cnts]
TRIGGER_DUR: 88.000 [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: 20761 TJD; 86 DOY; 25/03/27
GRB_TIME: 27004.68 SOD {07:30:04.68} UT
GRB_PHI: -143.77 [deg]
GRB_THETA: 50.63 [deg]
SOLN_STATUS: 0x20000013
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 8.75 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 -1 +0 +0 +18 +0
SUN_POSTN: 6.33d {+00h 25m 18s} +2.73d {+02d 44' 03"}
SUN_DIST: 100.48 [deg] Sun_angle= 7.9 [hr] (West of Sun)
MOON_POSTN: 339.69d {+22h 38m 46s} -10.44d {-10d 26' 26"}
MOON_DIST: 99.84 [deg]
MOON_ILLUM: 7 [%]
GAL_COORDS: 92.25, 39.93 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 197.39, 79.33 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
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 = 239.02,-18.50 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=764753411).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 27 Mar 25 07:46:55 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1299088, Seg_Num: 0
GRB_RA: 248.197d {+16h 32m 47s} (J2000),
248.280d {+16h 33m 07s} (current),
248.035d {+16h 32m 09s} (1950)
GRB_DEC: +61.595d {+61d 35' 43"} (J2000),
+61.543d {+61d 32' 36"} (current),
+61.699d {+61d 41' 57"} (1950)
GRB_DATE: 20761 TJD; 86 DOY; 25/03/27
GRB_TIME: 27004.68 SOD {07:30:04.68} UT
TRIGGER_INDEX: 20000
GRB_PHI: -143.77 [deg]
GRB_THETA: 50.63 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 88.000 [sec]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 8.75 [sigma]
LC_URL: sw01299088000msb.lc
GCN template for BAT paragraph
Click here!
At 07:30:04 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 250327 ***A*** (trigger=1299088). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 248.197, +61.595 which is
RA(J2000) = 16h 32m 47s
Dec(J2000) = +61d 35' 43"
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 ~1648 counts/sec (15-350 keV), at ~3 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
Extended TDRSS lc No.4
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: 47.744 s +/- 4.098 s
Estimated T50 duration: 18.176 s +/- 0.746362 s
Estimated Peak Interval: MET 764753443.20000005 +/- 0.500000 s
Estimated background rate 1: 4499.922 near MET 764753428.800000 s
Estimated background rate 2: 4506.238 near MET 764753566.528000 s
Estimated total duration: 65.536 s (for data selection)
(from MET 764753441.600000 to MET 764753507.136000)
Estimated total fluence: 19565.383736 count
Created GTI with 7 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 248.197 61.595 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 248.197 61.595
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 27 7 216.363130 -41.787857
Obj: 2025 3 27 7 212.304787 58.638429
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2025 3 27 7 166.536835 -54.831634
Obj: 2025 3 27 7 214.051162 37.023551
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2025 3 27 7 157.573510 -51.689509
Obj: 2025 3 27 7 214.588032 35.552107
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2025 3 27 7 107.688183 -33.975218
Obj: 2025 3 27 7 205.927450 6.513476
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2025 3 27 7 101.816755 13.602062
Obj: 2025 3 27 7 189.488985 -59.029583
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2025 3 27 7 71.273316 29.464047
Obj: 2025 3 27 7 176.959238 6.048956
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2025 3 27 7 265.331817 -2.853150
Obj: 2025 3 27 7 161.399081 53.739510
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2025 3 27 7 305.956399 -48.936871
Obj: 2025 3 27 7 193.746806 -5.035122
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1299088/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 27 03:25:43 EDT 2025