TDRSS lightcurve for Trigger=1071767
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 03 Sep 21 14:05:18 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1071767, Seg_Num: 0
GRB_RA: 186.147d {+12h 24m 35s} (J2000),
186.450d {+12h 25m 48s} (current),
185.452d {+12h 21m 49s} (1950)
GRB_DEC: -62.692d {-62d 41' 29"} (J2000),
-62.812d {-62d 48' 41"} (current),
-62.415d {-62d 24' 52"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=3321 [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: 19460 TJD; 246 DOY; 21/09/03
GRB_TIME: 50444.33 SOD {14:00:44.33} UT
GRB_PHI: 152.47 [deg]
GRB_THETA: 0.06 [deg]
SOLN_STATUS: 0x1000051D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 16.49 [sigma]
MERIT_PARAMS: +0 +0 +100 +6 +1 +5 +0 +1 -30 +0
SUN_POSTN: 162.74d {+10h 50m 58s} +7.33d {+07d 19' 39"}
SUN_DIST: 72.45 [deg] Sun_angle= -1.6 [hr] (East of Sun)
MOON_POSTN: 121.96d {+08h 07m 51s} +24.27d {+24d 15' 57"}
MOON_DIST: 100.73 [deg]
MOON_ILLUM: 13 [%]
GAL_COORDS: 299.86, 0.02 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 221.14,-52.72 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This Notice was delayed by more than 60 sec past the end of the trigger integration interval;
COMMENTS: probably due to it occurring during a Malindi downlink session.
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=21765=(null) (probably an AT_Slot).
COMMENTS: This matches a source in the ground catalog: GX_301-2, delta=0.243 [deg].
COMMENTS: This is not a GRB.
COMMENTS: This is an interesting source.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 03 Sep 21 14:09:40 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1071767, Seg_Num: 0
GRB_RA: 186.147d {+12h 24m 35s} (J2000),
186.450d {+12h 25m 48s} (current),
185.452d {+12h 21m 49s} (1950)
GRB_DEC: -62.692d {-62d 41' 29"} (J2000),
-62.812d {-62d 48' 41"} (current),
-62.415d {-62d 24' 52"} (1950)
GRB_DATE: 19460 TJD; 246 DOY; 21/09/03
GRB_TIME: 50444.33 SOD {14:00:44.33} UT
TRIGGER_INDEX: 20000
GRB_PHI: 152.47 [deg]
GRB_THETA: 0.06 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x51D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 16.49 [sigma]
LC_URL: sw01071767000msb.lc
GCN template for BAT paragraph
Click here!
At 14:00:44 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210903 ***A*** (trigger=1071767). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 186.147, -62.692 which is
RA(J2000) = 12h 24m 35s
Dec(J2000) = -62d 41' 29"
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 ~1052 counts/sec (15-350 keV), at ~138 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: 12.288 s +/- 4.096 s
Estimated T50 duration: 8.192 s +/- 4.096 s
Estimated Peak Interval: MET 652370610.81599998 +/- 0.500000 s
Estimated background rate 1: 4876.198 near MET 652370497.664000 s
Estimated background rate 2: 5119.604 near MET 652370637.440000 s
Estimated total duration: 69.632 s (for data selection)
(from MET 652370547.328000 to MET 652370616.960000)
Estimated total fluence: 3154.322096 count
Created GTI with 6 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 186.147 -62.692 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 186.147 -62.692
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 9 3 14 294.068486 37.129503
Obj: 2021 9 3 14 331.199413 -26.369032
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 9 3 14 268.316448 11.278902
Obj: 2021 9 3 14 327.578936 -34.585569
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 9 3 14 265.399247 6.332027
Obj: 2021 9 3 14 326.843904 -38.717814
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 9 3 14 248.512104 -30.176280
Obj: 2021 9 3 14 341.739335 -42.256124
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 9 3 14 3.039104 -66.029552
Obj: 2021 9 3 14 11.178577 6.158289
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 9 3 14 154.529239 -45.002381
Obj: 2021 9 3 14 29.275102 -51.710455
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 9 3 14 29.739325 65.840241
Obj: 2021 9 3 14 354.590388 -2.094726
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 9 3 14 233.379351 35.330504
Obj: 2021 9 3 14 328.288408 37.990787
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1071767/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 Sep 3 10:13:46 EDT 2021