TDRSS lightcurve for Trigger=1187199
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 25 Aug 23 18:00:53 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1187199, Seg_Num: 0
GRB_RA: 83.872d {+05h 35m 29s} (J2000),
84.229d {+05h 36m 55s} (current),
83.119d {+05h 32m 29s} (1950)
GRB_DEC: +22.215d {+22d 12' 52"} (J2000),
+22.228d {+22d 13' 41"} (current),
+22.183d {+22d 10' 59"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=4534 [image_cnts]
TRIGGER_DUR: 64.000 [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: 20181 TJD; 237 DOY; 23/08/25
GRB_TIME: 64776.10 SOD {17:59:36.10} UT
GRB_PHI: 133.47 [deg]
GRB_THETA: 11.25 [deg]
SOLN_STATUS: 0x513
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 17.72 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 +5 +0 +1 -37 +0
SUN_POSTN: 154.27d {+10h 17m 04s} +10.66d {+10d 39' 30"}
SUN_DIST: 67.63 [deg] Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN: 257.55d {+17h 10m 12s} -27.13d {-27d 07' 31"}
MOON_DIST: 172.21 [deg]
MOON_ILLUM: 64 [%]
GAL_COORDS: 184.51, -5.49 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 84.33, -1.10 [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 matches a source in the ground catalog: Crab, delta=0.299 [deg].
COMMENTS: This is not a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 207.19,-13.39 [deg].
COMMENTS:
COMMENTS: This trigger occured while the StarTracker had lost lock, so it is possibly bogus.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 25 Aug 23 18:17:46 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1187199, Seg_Num: 0
GRB_RA: 83.872d {+05h 35m 29s} (J2000),
84.229d {+05h 36m 55s} (current),
83.119d {+05h 32m 29s} (1950)
GRB_DEC: +22.215d {+22d 12' 52"} (J2000),
+22.228d {+22d 13' 41"} (current),
+22.183d {+22d 10' 59"} (1950)
GRB_DATE: 20181 TJD; 237 DOY; 23/08/25
GRB_TIME: 64776.10 SOD {17:59:36.10} UT
TRIGGER_INDEX: 20000
GRB_PHI: 133.47 [deg]
GRB_THETA: 11.25 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x513
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 17.72 [sigma]
LC_URL: sw01187199000msb.lc
GCN template for BAT paragraph
Click here!
At 17:59:36 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230825 ***A*** (trigger=1187199). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 83.872, +22.215 which is
RA(J2000) = 05h 35m 29s
Dec(J2000) = +22d 12' 52"
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 ~886 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 background rate 1: 4369.765 near MET 714679288.960000 s
Estimated background rate 2: 4369.765 near MET 714679288.960000 s
Estimated total fluence: 0.000000 count
Created GTI with 1 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 83.872 22.215 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 83.872 22.215
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 8 25 18 24.064703 59.656542
Obj: 2023 8 25 18 103.153746 19.628580
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2023 8 25 18 311.246659 60.795279
Obj: 2023 8 25 18 89.786663 46.391140
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2023 8 25 18 305.094988 55.795482
Obj: 2023 8 25 18 84.365250 51.348150
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2023 8 25 18 267.395462 25.531777
Obj: 2023 8 25 18 126.429085 85.906651
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2023 8 25 18 277.652605 -32.753561
Obj: 2023 8 25 18 229.610215 16.914879
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2023 8 25 18 228.813508 -30.260355
Obj: 2023 8 25 18 262.024925 29.526878
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2023 8 25 18 90.554617 21.568370
Obj: 2023 8 25 18 139.430879 -26.772798
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2023 8 25 18 154.334369 45.475732
Obj: 2023 8 25 18 110.315818 -9.459013
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1187199/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:
Fri Aug 25 14:18:02 EDT 2023