TDRSS lightcurve for Trigger=1205401

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Dec 23 18:34:38 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1205401,   Seg_Num: 0
GRB_RA:           83.595d {+05h 34m 23s} (J2000),
                  83.956d {+05h 35m 49s} (current),
                  82.845d {+05h 31m 23s} (1950)
GRB_DEC:         +21.752d {+21d 45' 07"} (J2000),
                 +21.766d {+21d 45' 59"} (current),
                 +21.719d {+21d 43' 09"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=4026 [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:        20308 TJD;   364 DOY;   23/12/30
GRB_TIME:        66319.35 SOD {18:25:19.35} UT
GRB_PHI:         151.41 [deg]
GRB_THETA:         0.09 [deg]
SOLN_STATUS:     0x1000051D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    16.40 [sigma]
MERIT_PARAMS:     +0  +0 +100  +6  +1  +4  +0  +1 +96  +0 
SUN_POSTN:       279.57d {+18h 38m 17s}  -23.14d {-23d 08' 37"}
SUN_DIST:        165.51 [deg]   Sun_angle= -11.0 [hr] (East of Sun)
MOON_POSTN:      145.23d {+09h 40m 55s}  +18.43d {+18d 25' 59"}
MOON_DIST:        57.27 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:      184.76, -5.95 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       84.05, -1.56 [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=25400=(null) (probably an AT_Slot).  
COMMENTS:        This matches a source in the ground catalog: Crab,   delta=0.264 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Dec 23 18:45:13 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1205401,   Seg_Num: 0
GRB_RA:           83.595d {+05h 34m 23s} (J2000),
                  83.956d {+05h 35m 49s} (current),
                  82.845d {+05h 31m 23s} (1950)
GRB_DEC:         +21.752d {+21d 45' 07"} (J2000),
                 +21.766d {+21d 45' 59"} (current),
                 +21.719d {+21d 43' 09"} (1950)
GRB_DATE:        20308 TJD;   364 DOY;   23/12/30
GRB_TIME:        66319.35 SOD {18:25:19.35} UT
TRIGGER_INDEX:   20000
GRB_PHI:         151.41 [deg]
GRB_THETA:         0.09 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x51D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    16.40 [sigma]
LC_URL:          sw01205401000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 18:25:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 231230 ***A*** (trigger=1205401).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 83.595, +21.752 which is 
   RA(J2000) = 05h 34m 23s
   Dec(J2000) = +21d 45' 07"
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 ~1000 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

    Extended TDRSS lc No.3

    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:     3816.787 near MET 725653632.960000 s
  Estimated background rate 2:     3816.787 near MET 725653632.960000 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 83.595 21.752 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 83.595 21.752
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 12 30 18 12.364135  26.803065
 Obj: 2023 12 30 18 208.079314  -24.003427
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 30 18 336.233361  31.223202
 Obj: 2023 12 30 18 172.616666  -36.224921
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 30 18 330.886489  27.482945
 Obj: 2023 12 30 18 166.148505  -33.657404
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 30 18 300.340182  12.098694
 Obj: 2023 12 30 18 127.168412  -25.121052
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 30 18 307.105566  -12.323881
 Obj: 2023 12 30 18 116.988009  1.815822
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 30 18 263.826103  -52.382013
 Obj: 2023 12 30 18 91.440831  38.854415
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 30 18 60.653011  4.170939
 Obj: 2023 12 30 18 249.225356  7.429277
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 30 18 109.950352  72.499236
 Obj: 2023 12 30 18 277.904564  -58.864507
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1205401/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 Dec 30 13:46:42 EST 2023