TDRSS lightcurve for Trigger=1159108

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 09 Mar 23 06:16:44 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1159108,   Seg_Num: 0
GRB_RA:           45.888d {+03h 03m 33s} (J2000),
                  46.186d {+03h 04m 45s} (current),
                  45.245d {+03h 00m 59s} (1950)
GRB_DEC:          +0.625d {+00d 37' 32"} (J2000),
                  +0.715d {+00d 42' 54"} (current),
                  +0.431d {+00d 25' 50"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       95 [cnts]    Image_Peak=22 [image_cnts]
TRIGGER_DUR:     0.032 [sec] 
TRIGGER_INDEX:   10319     E_range: 25-100 keV
BKG_INTEN:       13378 [cnts]
BKG_TIME:        22577.10 SOD {06:16:17.10} UT
BKG_DUR:         8 [sec]
GRB_DATE:        20012 TJD;    68 DOY;   23/03/09
GRB_TIME:        22587.02 SOD {06:16:27.02} UT
GRB_PHI:          44.44 [deg]
GRB_THETA:        13.49 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     6.40 [sigma]
IMAGE_SIGNIF:    6.53 [sigma]
MERIT_PARAMS:     +1  +0  +0  -5  +2  -4  +0  +0 -54  +0 
SUN_POSTN:       349.35d {+23h 17m 23s}   -4.58d {-04d 34' 51"}
SUN_DIST:         57.03 [deg]   Sun_angle= -3.8 [hr] (East of Sun)
MOON_POSTN:      188.32d {+12h 33m 17s}   -1.02d {-01d 00' 54"}
MOON_DIST:       142.14 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      177.21,-47.83 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       43.61,-16.00 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 159.27,2.97 [deg].  
COMMENTS:        This AT will self-cancel at the end of the first orbit (ie I_signif<7.0 && Trig_dur<65msec).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 09 Mar 23 06:23:06 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1159108,   Seg_Num: 0
GRB_RA:           45.888d {+03h 03m 33s} (J2000),
                  46.186d {+03h 04m 45s} (current),
                  45.245d {+03h 00m 59s} (1950)
GRB_DEC:          +0.625d {+00d 37' 32"} (J2000),
                  +0.715d {+00d 42' 54"} (current),
                  +0.431d {+00d 25' 50"} (1950)
GRB_DATE:        20012 TJD;    68 DOY;   23/03/09
GRB_TIME:        22587.00 SOD {06:16:27.00} UT
TRIGGER_INDEX:   10319
GRB_PHI:          44.44 [deg]
GRB_THETA:        13.49 [deg]
DELTA_TIME:      -29.00 [sec]
TRIGGER_DUR:     0.032 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     6.40 [sigma]
IMAGE_SIGNIF:    6.53 [sigma]
LC_URL:          sw01159108000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 06:16:27 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230309 ***A*** (trigger=1159108).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 45.888, +0.625 which is 
   RA(J2000) = 03h 03m 33s
   Dec(J2000) = +00d 37' 32"
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 ~976 counts/sec (15-350 keV), at ~0 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 background rate 1:     3395.041 near MET 700035498.560000 s
  Estimated background rate 2:     3395.041 near MET 700035498.560000 s
  Estimated total fluence: 0.000000 count
  Created GTI with 1 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 45.888 0.625 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 45.888 0.625
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 9 6 197.228527  -54.437092
 Obj: 2023 3 9 6 121.069114  -31.579655
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 9 6 135.282144  -54.767416
 Obj: 2023 3 9 6 95.427372  -7.402822
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 9 6 129.262470  -49.914956
 Obj: 2023 3 9 6 92.319151  -2.257159
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 9 6 92.965001  -21.678283
 Obj: 2023 3 9 6 77.190972  33.339140
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 9 6 105.043714  31.234477
 Obj: 2023 3 9 6 181.766809  57.967412
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 9 6 51.513996  36.224837
 Obj: 2023 3 9 6 330.284342  52.505685
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 9 6 263.737061  -20.658797
 Obj: 2023 3 9 6 203.559181  -58.352459
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 9 6 333.791232  -51.947903
 Obj: 2023 3 9 6 60.538671  -41.156203
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1159108/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:
Thu Mar  9 01:25:22 EST 2023