TDRSS lightcurve for Trigger=820513
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 31 Mar 18 15:39:16 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 820513, Seg_Num: 0
GRB_RA: 196.820d {+13h 07m 17s} (J2000),
196.999d {+13h 08m 00s} (current),
196.328d {+13h 05m 19s} (1950)
GRB_DEC: +61.725d {+61d 43' 30"} (J2000),
+61.628d {+61d 37' 40"} (current),
+61.992d {+61d 59' 31"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 7525 [cnts] Image_Peak=250 [image_cnts]
TRIGGER_DUR: 2.048 [sec]
TRIGGER_INDEX: 264 E_range: 25-100 keV
BKG_INTEN: 69352 [cnts]
BKG_TIME: 56283.28 SOD {15:38:03.28} UT
BKG_DUR: 24 [sec]
GRB_DATE: 18208 TJD; 90 DOY; 18/03/31
GRB_TIME: 56319.32 SOD {15:38:39.32} UT
GRB_PHI: -67.56 [deg]
GRB_THETA: 34.35 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 21.67 [sigma]
IMAGE_SIGNIF: 9.48 [sigma]
MERIT_PARAMS: +1 +0 +0 +1 +2 +0 +0 +0 +40 +0
SUN_POSTN: 10.00d {+00h 40m 00s} +4.30d {+04d 18' 15"}
SUN_DIST: 113.85 [deg] Sun_angle= 11.5 [hr] (West of Sun)
MOON_POSTN: 193.25d {+12h 53m 00s} -0.89d {-00d 53' 36"}
MOON_DIST: 62.59 [deg]
MOON_ILLUM: 100 [%]
GAL_COORDS: 119.64, 55.30 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 153.65, 59.60 [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 = 51.62,-4.01 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 31 Mar 18 15:56:15 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 820513, Seg_Num: 0
GRB_RA: 196.820d {+13h 07m 17s} (J2000),
196.999d {+13h 08m 00s} (current),
196.328d {+13h 05m 19s} (1950)
GRB_DEC: +61.725d {+61d 43' 30"} (J2000),
+61.628d {+61d 37' 40"} (current),
+61.992d {+61d 59' 31"} (1950)
GRB_DATE: 18208 TJD; 90 DOY; 18/03/31
GRB_TIME: 56319.32 SOD {15:38:39.32} UT
TRIGGER_INDEX: 264
GRB_PHI: -67.56 [deg]
GRB_THETA: 34.35 [deg]
DELTA_TIME: 76.00 [sec]
TRIGGER_DUR: 2.048 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 21.67 [sigma]
IMAGE_SIGNIF: 9.48 [sigma]
LC_URL: sw00820513000msb.lc
GCN template for BAT paragraph
Click here!
At 15:38:39 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 180331 ***A*** (trigger=820513). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 196.820, +61.725 which is
RA(J2000) = 13h 07m 17s
Dec(J2000) = +61d 43' 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 ~2050 counts/sec (15-350 keV), at ~1 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: 142.976 s +/- 24.6731 s
Estimated T50 duration: 142.976 s +/- 68.0123 s
Estimated Peak Interval: MET 544203541.44000006 +/- 0.500000 s
Estimated background rate 1: 5901.250 near MET 544203521.600000 s
Estimated background rate 2: 5731.742 near MET 544203698.048000 s
Estimated total duration: 142.976 s (for data selection)
(from MET 544203526.400000 to MET 544203669.376000)
Estimated total fluence: -19799.733428 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 196.820 61.725 0.083
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: 2018 3 31 15 310.291607 43.920335
Obj: 2018 3 31 15 161.315031 15.789956
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2018 3 31 15 278.485766 21.387591
Obj: 2018 3 31 15 150.698217 20.678885
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2018 3 31 15 275.618983 16.175344
Obj: 2018 3 31 15 148.954646 24.656468
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2018 3 31 15 257.956432 -19.058540
Obj: 2018 3 31 15 150.993930 30.993951
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2018 3 31 15 333.887328 -60.569150
Obj: 2018 3 31 15 177.380019 -3.058304
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2018 3 31 15 173.505761 -51.130423
Obj: 2018 3 31 15 191.193095 61.852640
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2018 3 31 15 49.563708 55.525322
Obj: 2018 3 31 15 188.704210 1.586127
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2018 3 31 15 222.017233 46.479624
Obj: 2018 3 31 15 154.375688 -51.489880
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger820513/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:
Sat Mar 31 11:56:24 EDT 2018