TDRSS lightcurve for Trigger=1202749

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 16 Dec 23 18:41:06 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1202749,   Seg_Num: 0
GRB_RA:           39.759d {+02h 39m 02s} (J2000),
                  40.123d {+02h 40m 29s} (current),
                  39.001d {+02h 36m 00s} (1950)
GRB_DEC:         +33.596d {+33d 35' 45"} (J2000),
                 +33.698d {+33d 41' 53"} (current),
                 +33.381d {+33d 22' 51"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1754 [cnts]    Image_Peak=123 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   42     E_range: 25-100 keV
BKG_INTEN:       18089 [cnts]
BKG_TIME:        66927.44 SOD {18:35:27.44} UT
BKG_DUR:         8 [sec]
GRB_DATE:        20294 TJD;   350 DOY;   23/12/16
GRB_TIME:        66942.03 SOD {18:35:42.03} UT
GRB_PHI:          -8.37 [deg]
GRB_THETA:        38.72 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     17.60 [sigma]
IMAGE_SIGNIF:    8.94 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +2  -1  +0  +0 +76  +0 
SUN_POSTN:       264.05d {+17h 36m 13s}  -23.32d {-23d 19' 21"}
SUN_DIST:        140.34 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      318.67d {+21h 14m 41s}  -20.95d {-20d 56' 51"}
MOON_DIST:        94.75 [deg]
MOON_ILLUM:      18 [%]
GAL_COORDS:      147.32,-24.13 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       47.91, 17.20 [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 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:        This trigger occurred at longitude,latitude = 9.83,-13.46 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 16 Dec 23 18:56:59 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1202749,   Seg_Num: 0
GRB_RA:           39.759d {+02h 39m 02s} (J2000),
                  40.123d {+02h 40m 29s} (current),
                  39.001d {+02h 36m 00s} (1950)
GRB_DEC:         +33.596d {+33d 35' 45"} (J2000),
                 +33.698d {+33d 41' 53"} (current),
                 +33.381d {+33d 22' 51"} (1950)
GRB_DATE:        20294 TJD;   350 DOY;   23/12/16
GRB_TIME:        66942.03 SOD {18:35:42.03} UT
TRIGGER_INDEX:   42
GRB_PHI:          -8.37 [deg]
GRB_THETA:        38.72 [deg]
DELTA_TIME:      -18.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     17.60 [sigma]
IMAGE_SIGNIF:    8.94 [sigma]
LC_URL:          sw01202749000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 18:35:42 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 231216 ***A*** (trigger=1202749).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 39.759, +33.596 which is 
   RA(J2000) = 02h 39m 02s
   Dec(J2000) = +33d 35' 45"
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 ~2578 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

    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: 59.008 s +/- 2.89772 s
  Estimated T50 duration: 41.216 s +/- 2.89772 s
  Estimated Peak Interval: MET   724444627.19999993 +/- 0.500000 s
  Estimated background rate 1:     4560.268 near MET 724444561.600000 s
  Estimated background rate 2:     4243.950 near MET 724444713.216000 s
  Estimated total duration: 93.312 s (for data selection)
       (from MET 724444572.800000 to MET 724444666.112000)
  Estimated total fluence: 14596.328211 count
  Created GTI with 9 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 39.759 33.596 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 39.759 33.596
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 16 18 14.065838  26.322636
 Obj: 2023 12 16 18 224.638422  0.133304
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 16 18 338.042534  31.628782
 Obj: 2023 12 16 18 200.911075  -20.962743
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 16 18 332.590380  28.005957
 Obj: 2023 12 16 18 195.658719  -20.964546
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 16 18 301.274212  13.408996
 Obj: 2023 12 16 18 159.248714  -32.888602
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 16 18 306.162874  -11.022680
 Obj: 2023 12 16 18 114.745118  -27.095573
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 16 18 265.228433  -51.044571
 Obj: 2023 12 16 18 117.517262  20.449461
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 16 18 61.380038  2.749810
 Obj: 2023 12 16 18 247.565755  36.392589
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 12 16 18 107.128339  71.166539
 Obj: 2023 12 16 18 248.623031  -36.925775
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1202749/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 16 13:57:42 EST 2023