TDRSS lightcurve for Trigger=1081073

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 24 Oct 21 22:21:50 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1081073,   Seg_Num: 0
GRB_RA:          154.688d {+10h 18m 45s} (J2000),
                 154.991d {+10h 19m 58s} (current),
                 153.992d {+10h 15m 58s} (1950)
GRB_DEC:         +24.579d {+24d 34' 43"} (J2000),
                 +24.469d {+24d 28' 07"} (current),
                 +24.830d {+24d 49' 46"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=4641 [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:        19511 TJD;   297 DOY;   21/10/24
GRB_TIME:        80436.03 SOD {22:20:36.03} UT
GRB_PHI:         165.72 [deg]
GRB_THETA:         2.70 [deg]
SOLN_STATUS:     0x2013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    19.41 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +6  +0  +0 -42  +0 
SUN_POSTN:       209.57d {+13h 58m 16s}  -12.07d {-12d 04' 23"}
SUN_DIST:         64.58 [deg]   Sun_angle= 3.6 [hr] (West of Sun)
MOON_POSTN:       77.80d {+05h 11m 13s}  +24.57d {+24d 34' 19"}
MOON_DIST:        69.16 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      208.44, 55.68 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      147.58, 13.12 [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 does not match any source in the ground catalog.  
COMMENTS:        There is a bright star (mag=6.40) 8.73 arcmin from this position.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 90.97,-18.25 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 24 Oct 21 22:37:31 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1081073,   Seg_Num: 0
GRB_RA:          154.688d {+10h 18m 45s} (J2000),
                 154.991d {+10h 19m 58s} (current),
                 153.992d {+10h 15m 58s} (1950)
GRB_DEC:         +24.579d {+24d 34' 43"} (J2000),
                 +24.469d {+24d 28' 07"} (current),
                 +24.830d {+24d 49' 46"} (1950)
GRB_DATE:        19511 TJD;   297 DOY;   21/10/24
GRB_TIME:        80436.03 SOD {22:20:36.03} UT
TRIGGER_INDEX:   20000
GRB_PHI:         165.72 [deg]
GRB_THETA:         2.70 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x2013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    19.41 [sigma]
LC_URL:          sw01081073000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 22:20:36 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 211024 ***A*** (trigger=1081073).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 154.688, +24.579 which is 
   RA(J2000) = 10h 18m 45s
   Dec(J2000) = +24d 34' 43"
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 ~1538 counts/sec (15-350 keV), at ~7 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: 113.536 s +/- 8.24806 s
  Estimated T50 duration: 29.696 s +/- 2.57277 s
  Estimated Peak Interval: MET   656806908.60799992 +/- 0.500000 s
  Estimated background rate 1:     4440.937 near MET 656806844.800000 s
  Estimated background rate 2:     3971.029 near MET 656807031.488000 s
  Estimated total duration: 163.456 s (for data selection)
       (from MET 656806849.600000 to MET 656807013.056000)
  Estimated total fluence: 34940.259025 count
  Created GTI with 8 entries
------------------------------------------

    Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)

    bat_grb_pos_cat.sh 154.688 24.579 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 154.688 24.579
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 10 24 22 72.207603  2.516284
 Obj: 2021 10 24 22 135.562112  -11.854060
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 24 22 49.958378  30.147089
 Obj: 2021 10 24 22 114.523871  6.918317
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 24 22 43.885499  32.697749
 Obj: 2021 10 24 22 111.378304  12.213577
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 24 22 356.322397  58.009992
 Obj: 2021 10 24 22 105.608633  41.340732
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 24 22 263.466993  33.899364
 Obj: 2021 10 24 22 183.183867  34.145703
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 24 22 289.023284  5.887035
 Obj: 2021 10 24 22 295.191146  70.358527
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 24 22 102.575094  -45.511455
 Obj: 2021 10 24 22 191.426168  -35.918341
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 24 22 83.175585  12.433928
 Obj: 2021 10 24 22 91.936833  -51.673975
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1081073/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 Oct 24 18:38:03 EDT 2021