TDRSS lightcurve for Trigger=1061554
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 25 Jul 21 12:01:33 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1061554, Seg_Num: 0
GRB_RA: 192.932d {+12h 51m 44s} (J2000),
193.200d {+12h 52m 48s} (current),
192.310d {+12h 49m 15s} (1950)
GRB_DEC: +17.125d {+17d 07' 30"} (J2000),
+17.008d {+17d 00' 29"} (current),
+17.397d {+17d 23' 48"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 6442 [cnts] Image_Peak=227 [image_cnts]
TRIGGER_DUR: 3.072 [sec]
TRIGGER_INDEX: 474 E_range: 25-100 keV
BKG_INTEN: 58104 [cnts]
BKG_TIME: 43204.56 SOD {12:00:04.56} UT
BKG_DUR: 32 [sec]
GRB_DATE: 19420 TJD; 206 DOY; 21/07/25
GRB_TIME: 43248.02 SOD {12:00:48.02} UT
GRB_PHI: 147.32 [deg]
GRB_THETA: 11.43 [deg]
SOLN_STATUS: 0x2003
RATE_SIGNIF: 11.00 [sigma]
IMAGE_SIGNIF: 7.81 [sigma]
MERIT_PARAMS: +1 +0 +0 +2 +2 -2 +0 +0 -44 +0
SUN_POSTN: 125.06d {+08h 20m 14s} +19.54d {+19d 32' 12"}
SUN_DIST: 64.32 [deg] Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN: 325.11d {+21h 40m 27s} -19.04d {-19d 02' 37"}
MOON_DIST: 134.37 [deg]
MOON_ILLUM: 97 [%]
GAL_COORDS: 303.33, 80.00 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 184.85, 20.81 [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: There is a bright star (mag=6.32) 7.49 arcmin from this position.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 126.64,4.44 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 25 Jul 21 12:21:37 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1061554, Seg_Num: 0
GRB_RA: 192.932d {+12h 51m 44s} (J2000),
193.200d {+12h 52m 48s} (current),
192.310d {+12h 49m 15s} (1950)
GRB_DEC: +17.125d {+17d 07' 30"} (J2000),
+17.008d {+17d 00' 29"} (current),
+17.397d {+17d 23' 48"} (1950)
GRB_DATE: 19420 TJD; 206 DOY; 21/07/25
GRB_TIME: 43248.02 SOD {12:00:48.02} UT
TRIGGER_INDEX: 474
GRB_PHI: 147.32 [deg]
GRB_THETA: 11.43 [deg]
DELTA_TIME: -27811.00 [sec]
TRIGGER_DUR: 3.072 [sec]
SOLN_STATUS: 0x2003
RATE_SIGNIF: 11.00 [sigma]
IMAGE_SIGNIF: 7.81 [sigma]
LC_URL: sw01061554000msb.lc
GCN template for BAT paragraph
Click here!
At 12:00:48 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210725 ***A*** (trigger=1061554). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 192.932, +17.125 which is
RA(J2000) = 12h 51m 44s
Dec(J2000) = +17d 07' 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 ~1009 counts/sec (15-350 keV), at ~2 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
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: 2.944 s +/- 0.256 s
Estimated T50 duration: 1.664 s +/- 0.256 s
Estimated Peak Interval: MET 648907277.11999989 +/- 0.500000 s
Estimated background rate 1: 3595.025 near MET 648907263.360000 s
Estimated background rate 2: 3683.712 near MET 648907281.088000 s
Estimated total duration: 3.456 s (for data selection)
(from MET 648907275.520000 to MET 648907278.976000)
Estimated total fluence: 1205.278131 count
Created GTI with 3 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 192.932 17.125 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 192.932 17.125
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: 2021 7 25 12 260.971323 20.453393
Obj: 2021 7 25 12 215.282142 -26.152565
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 7 25 12 241.128304 -7.962177
Obj: 2021 7 25 12 178.527093 -41.320366
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 7 25 12 237.224955 -11.442332
Obj: 2021 7 25 12 171.179191 -39.207724
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 7 25 12 210.467761 -44.945051
Obj: 2021 7 25 12 126.219816 -31.937542
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 7 25 12 76.418025 -58.078766
Obj: 2021 7 25 12 110.273249 0.360439
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 7 25 12 130.809147 -18.336862
Obj: 2021 7 25 12 89.265186 32.213959
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 7 25 12 292.349357 69.570324
Obj: 2021 7 25 12 255.811135 9.616020
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 7 25 12 244.666920 3.816686
Obj: 2021 7 25 12 281.729436 -52.344791
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1061554/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:
Sun Jul 25 08:22:04 EDT 2021