TDRSS lightcurve for Trigger=1159439

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Mar 23 20:09:25 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1159439,   Seg_Num: 0
GRB_RA:           83.514d {+05h 34m 03s} (J2000),
                  83.864d {+05h 35m 27s} (current),
                  82.761d {+05h 31m 03s} (1950)
GRB_DEC:         +22.236d {+22d 14' 11"} (J2000),
                 +22.251d {+22d 15' 02"} (current),
                 +22.203d {+22d 12' 12"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1713 [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:        20014 TJD;    70 DOY;   23/03/11
GRB_TIME:        72489.09 SOD {20:08:09.09} UT
GRB_PHI:         102.01 [deg]
GRB_THETA:        29.05 [deg]
SOLN_STATUS:     0x513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    11.53 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +1  +0  +1  +5  +0 
SUN_POSTN:       351.72d {+23h 26m 53s}   -3.57d {-03d 34' 12"}
SUN_DIST:         93.33 [deg]   Sun_angle= -6.1 [hr] (East of Sun)
MOON_POSTN:      218.06d {+14h 32m 14s}  -15.54d {-15d 32' 24"}
MOON_DIST:       136.31 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      184.31, -5.76 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       84.00, -1.07 [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 matches a source in the ground catalog: Crab,   delta=0.248 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 291.36,2.57 [deg].  
COMMENTS:           
COMMENTS:        This trigger occured while the StarTracker had lost lock, so it is possibly bogus.

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Mar 23 20:24:21 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1159439,   Seg_Num: 0
GRB_RA:           83.514d {+05h 34m 03s} (J2000),
                  83.864d {+05h 35m 27s} (current),
                  82.761d {+05h 31m 03s} (1950)
GRB_DEC:         +22.236d {+22d 14' 11"} (J2000),
                 +22.251d {+22d 15' 02"} (current),
                 +22.203d {+22d 12' 12"} (1950)
GRB_DATE:        20014 TJD;    70 DOY;   23/03/11
GRB_TIME:        72489.09 SOD {20:08:09.09} UT
TRIGGER_INDEX:   20000
GRB_PHI:         102.01 [deg]
GRB_THETA:        29.05 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    11.53 [sigma]
LC_URL:          sw01159439000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 20:08:09 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230311 ***A*** (trigger=1159439).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 83.514, +22.236 which is 
   RA(J2000) = 05h 34m 03s
   Dec(J2000) = +22d 14' 11"
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 ~902 counts/sec (15-350 keV), at ~15 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

    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: 90.112 s +/- 16.8882 s
  Estimated T50 duration: 90.112 s +/- 63.587 s
  Estimated Peak Interval: MET   700258230.14399993 +/- 0.500000 s
  Estimated background rate 1:     3249.339 near MET 700258129.280000 s
  Estimated background rate 2:     3418.551 near MET 700258279.296000 s
  Estimated total duration: 90.112 s (for data selection)
       (from MET 700258162.560000 to MET 700258252.672000)
  Estimated total fluence: -6408.553565 count
  Created GTI with 4 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 83.514 22.236 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 83.514 22.236
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: 2023 3 11 20 50.577362  33.602851
 Obj: 2023 3 11 20 275.031428  42.890853
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 20 10.500887  54.242960
 Obj: 2023 3 11 20 252.650834  14.654617
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 20 0.230669  53.053325
 Obj: 2023 3 11 20 250.142692  10.402847
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 20 297.545222  45.536217
 Obj: 2023 3 11 20 231.420229  -26.016317
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 20 275.092710  -1.530631
 Obj: 2023 3 11 20 32.366202  -79.476333
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 20 261.091093  -18.950625
 Obj: 2023 3 11 20 155.818275  -29.413770
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 20 91.250067  -9.747565
 Obj: 2023 3 11 20 45.659813  80.943402
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 20 112.416557  38.992300
 Obj: 2023 3 11 20 225.706693  21.217975
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1159439/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 11 15:24:43 EST 2023