TDRSS lightcurve for Trigger=1042032
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 09 Apr 21 13:56:06 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1042032, Seg_Num: 0
GRB_RA: 244.954d {+16h 19m 49s} (J2000),
245.257d {+16h 21m 02s} (current),
244.244d {+16h 16m 59s} (1950)
GRB_DEC: -15.573d {-15d 34' 23"} (J2000),
-15.623d {-15d 37' 23"} (current),
-15.454d {-15d 27' 13"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=3571 [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: 19313 TJD; 99 DOY; 21/04/09
GRB_TIME: 50045.18 SOD {13:54:05.18} UT
GRB_PHI: 113.87 [deg]
GRB_THETA: 0.02 [deg]
SOLN_STATUS: 0x11D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 15.97 [sigma]
MERIT_PARAMS: +0 +0 +100 +6 +1 +4 +0 +0 +69 +0
SUN_POSTN: 18.41d {+01h 13m 39s} +7.80d {+07d 47' 43"}
SUN_DIST: 133.56 [deg] Sun_angle= 8.9 [hr] (West of Sun)
MOON_POSTN: 354.13d {+23h 36m 32s} -8.01d {-08d 00' 37"}
MOON_DIST: 105.72 [deg]
MOON_ILLUM: 6 [%]
GAL_COORDS: 359.13, 23.85 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 245.80, 5.79 [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 matches a source in the on-board catalog: Num=22031=(null) (probably an AT_Slot).
COMMENTS: This matches a source in the ground catalog: Sco_X-1, delta=0.071 [deg].
COMMENTS: This is not a GRB.
COMMENTS: This is an interesting source.
COMMENTS: This trigger occurred at longitude,latitude = 261.13,-6.27 [deg].
COMMENTS:
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 09 Apr 21 13:58:05 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1042032, Seg_Num: 0
GRB_RA: 244.954d {+16h 19m 49s} (J2000),
245.257d {+16h 21m 02s} (current),
244.244d {+16h 16m 59s} (1950)
GRB_DEC: -15.573d {-15d 34' 23"} (J2000),
-15.623d {-15d 37' 23"} (current),
-15.454d {-15d 27' 13"} (1950)
GRB_DATE: 19313 TJD; 99 DOY; 21/04/09
GRB_TIME: 50045.18 SOD {13:54:05.18} UT
TRIGGER_INDEX: 20000
GRB_PHI: 113.87 [deg]
GRB_THETA: 0.02 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x11D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 15.97 [sigma]
LC_URL: sw01042032000msb.lc
GCN template for BAT paragraph
Click here!
At 13:54:05 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210409 ***A*** (trigger=1042032). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 244.954, -15.573 which is
RA(J2000) = 16h 19m 49s
Dec(J2000) = -15d 34' 23"
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 ~1550 counts/sec (15-350 keV), at ~183 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: 69.632 s +/- 16.8882 s
Estimated T50 duration: 69.632 s +/- 33.023 s
Estimated Peak Interval: MET 639669447.67999995 +/- 0.500000 s
Estimated background rate 1: 5540.703 near MET 639669312.000000 s
Estimated background rate 2: 6338.949 near MET 639669451.776000 s
Estimated total duration: 69.632 s (for data selection)
(from MET 639669376.000000 to MET 639669445.632000)
Estimated total fluence: -21075.003829 count
Created GTI with 5 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 244.954 -15.573 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 244.954 -15.573
Sco X-1 10003 244.979 -15.64 0.07119552074156789
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 4 9 14 293.157451 37.059429
Obj: 2021 4 9 14 74.965189 -6.324071
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 4 9 14 267.611672 11.045240
Obj: 2021 4 9 14 54.106340 21.667263
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 4 9 14 264.695988 6.122550
Obj: 2021 4 9 14 48.986077 24.585010
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 4 9 14 247.724818 -30.441343
Obj: 2021 4 9 14 11.196909 53.891763
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 4 9 14 4.482270 -66.470176
Obj: 2021 4 9 14 262.101113 43.100926
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 4 9 14 154.040921 -44.360870
Obj: 2021 4 9 14 297.219311 10.354124
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 4 9 14 29.007403 66.507908
Obj: 2021 4 9 14 104.080196 -54.716435
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 4 9 14 233.460624 34.603514
Obj: 2021 4 9 14 75.807144 6.688624
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1042032/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 Apr 9 10:02:02 EDT 2021