TDRSS lightcurve for Trigger=1287821
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 07 Feb 25 01:16:21 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1287821, Seg_Num: 0
GRB_RA: 16.115d {+01h 04m 28s} (J2000),
16.428d {+01h 05m 43s} (current),
15.491d {+01h 01m 58s} (1950)
GRB_DEC: -12.159d {-12d 09' 30"} (J2000),
-12.025d {-12d 01' 27"} (current),
-12.427d {-12d 25' 35"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 3739 [cnts] Image_Peak=345 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 146 E_range: 25-100 keV
BKG_INTEN: 16181 [cnts]
BKG_TIME: 4548.96 SOD {01:15:48.96} UT
BKG_DUR: 8 [sec]
GRB_DATE: 20713 TJD; 38 DOY; 25/02/07
GRB_TIME: 4567.33 SOD {01:16:07.33} UT
GRB_PHI: -171.20 [deg]
GRB_THETA: 35.41 [deg]
SOLN_STATUS: 0x20000003
RATE_SIGNIF: 34.52 [sigma]
IMAGE_SIGNIF: 14.23 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 +3 +0 +0 -59 +0
SUN_POSTN: 320.95d {+21h 23m 47s} -15.28d {-15d 16' 33"}
SUN_DIST: 53.88 [deg] Sun_angle= -3.7 [hr] (East of Sun)
MOON_POSTN: 68.32d {+04h 33m 17s} +26.96d {+26d 57' 31"}
MOON_DIST: 63.67 [deg]
MOON_ILLUM: 69 [%]
GAL_COORDS: 135.09,-74.72 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 9.97,-17.53 [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 = 246.80,18.23 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(4.0<100sec) coincident with the FERMI_GBM event (trignum=760583768).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 07 Feb 25 01:34:10 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1287821, Seg_Num: 0
GRB_RA: 16.115d {+01h 04m 28s} (J2000),
16.428d {+01h 05m 43s} (current),
15.491d {+01h 01m 58s} (1950)
GRB_DEC: -12.159d {-12d 09' 30"} (J2000),
-12.025d {-12d 01' 27"} (current),
-12.427d {-12d 25' 35"} (1950)
GRB_DATE: 20713 TJD; 38 DOY; 25/02/07
GRB_TIME: 4567.33 SOD {01:16:07.33} UT
TRIGGER_INDEX: 146
GRB_PHI: -171.20 [deg]
GRB_THETA: 35.41 [deg]
DELTA_TIME: -76.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 34.52 [sigma]
IMAGE_SIGNIF: 14.23 [sigma]
LC_URL: sw01287821000msb.lc
GCN template for BAT paragraph
Click here!
At 01:16:07 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 250207 ***A*** (trigger=1287821). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 16.115, -12.159 which is
RA(J2000) = 01h 04m 28s
Dec(J2000) = -12d 09' 30"
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 ~3847 counts/sec (15-350 keV), at ~6 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 s +/- 0.289772 s
Estimated T50 duration: 9.856 s +/- 0.202386 s
Estimated Peak Interval: MET 760583809.59999990 +/- 0.500000 s
Estimated background rate 1: 4011.049 near MET 760583786.560000 s
Estimated background rate 2: 3931.114 near MET 760583921.984000 s
Estimated total duration: 60.928 s (for data selection)
(from MET 760583795.520000 to MET 760583856.448000)
Estimated total fluence: 42349.272862 count
Created GTI with 21 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 16.115 -12.159 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 16.115 -12.159
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 2 7 1 92.794616 -28.191012
Obj: 2025 2 7 1 59.971327 15.321310
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2025 2 7 1 71.851271 0.121496
Obj: 2025 2 7 1 32.291275 40.307783
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2025 2 7 1 68.503434 4.303959
Obj: 2025 2 7 1 24.553381 41.246372
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2025 2 7 1 47.445191 40.452874
Obj: 2025 2 7 1 326.655954 52.535892
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2025 2 7 1 233.279056 65.733158
Obj: 2025 2 7 1 273.047359 18.521946
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2025 2 7 1 318.741167 29.324747
Obj: 2025 2 7 1 278.839962 -8.474572
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2025 2 7 1 153.190806 -75.105779
Obj: 2025 2 7 1 92.335978 -29.869046
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2025 2 7 1 60.583709 -16.477391
Obj: 2025 2 7 1 92.129198 27.909424
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1287821/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 Feb 6 20:34:43 EST 2025