TDRSS lightcurve for Trigger=1163119

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 05 Apr 23 19:58:18 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1163119,   Seg_Num: 0
GRB_RA:          271.467d {+18h 05m 52s} (J2000),
                 271.904d {+18h 07m 37s} (current),
                 270.527d {+18h 02m 07s} (1950)
GRB_DEC:         -47.070d {-47d 04' 12"} (J2000),
                 -47.067d {-47d 03' 59"} (current),
                 -47.075d {-47d 04' 30"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1470 [cnts]    Image_Peak=141 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   124     E_range: 25-100 keV
BKG_INTEN:       12513 [cnts]
BKG_TIME:        71872.94 SOD {19:57:52.94} UT
BKG_DUR:         8 [sec]
GRB_DATE:        20039 TJD;    95 DOY;   23/04/05
GRB_TIME:        71883.50 SOD {19:58:03.50} UT
GRB_PHI:         -102.89 [deg]
GRB_THETA:        11.14 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     22.91 [sigma]
IMAGE_SIGNIF:    9.59 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +2  +0  +0  +1 +23  +0 
SUN_POSTN:        14.53d {+00h 58m 08s}   +6.21d {+06d 12' 28"}
SUN_DIST:        103.13 [deg]   Sun_angle= 6.8 [hr] (West of Sun)
MOON_POSTN:      191.51d {+12h 46m 02s}   -2.68d {-02d 40' 43"}
MOON_DIST:        81.51 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      346.05,-12.36 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      271.09,-23.64 [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:        This trigger occurred at longitude,latitude = 144.49,-14.66 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=702417488).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 05 Apr 23 20:18:26 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1163119,   Seg_Num: 0
GRB_RA:          271.467d {+18h 05m 52s} (J2000),
                 271.904d {+18h 07m 37s} (current),
                 270.527d {+18h 02m 07s} (1950)
GRB_DEC:         -47.070d {-47d 04' 12"} (J2000),
                 -47.067d {-47d 03' 59"} (current),
                 -47.075d {-47d 04' 30"} (1950)
GRB_DATE:        20039 TJD;    95 DOY;   23/04/05
GRB_TIME:        71883.50 SOD {19:58:03.50} UT
TRIGGER_INDEX:   124
GRB_PHI:         -102.89 [deg]
GRB_THETA:        11.14 [deg]
DELTA_TIME:      64.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     22.91 [sigma]
IMAGE_SIGNIF:    9.59 [sigma]
LC_URL:          sw01163119000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 19:58:03 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230405 ***A*** (trigger=1163119).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 271.467, -47.070 which is 
   RA(J2000) = 18h 05m 52s
   Dec(J2000) = -47d 04' 12"
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 ~16136 counts/sec (15-350 keV), at ~2 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: 14.08 s +/- 1.1909 s
  Estimated T50 duration: 1.792 s +/- 0.128 s
  Estimated Peak Interval: MET   702417516.99199986 +/- 0.500000 s
  Estimated background rate 1:     3161.250 near MET 702417496.000000 s
  Estimated background rate 2:     3084.528 near MET 702417623.808000 s
  Estimated total duration: 45.696 s (for data selection)
       (from MET 702417500.800000 to MET 702417546.496000)
  Estimated total fluence: 37918.166723 count
  Created GTI with 21 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 271.467 -47.070 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 271.467 -47.070
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 4 5 20 60.158992  39.964876
 Obj: 2023 4 5 20 60.913777  -63.162962
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 4 5 20 17.923315  63.448828
 Obj: 2023 4 5 20 52.054868  -36.068957
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 4 5 20 4.278331  62.782662
 Obj: 2023 4 5 20 51.883126  -33.119672
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 4 5 20 285.890867  51.896921
 Obj: 2023 4 5 20 38.484857  0.661833
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 4 5 20 265.764532  -5.047715
 Obj: 2023 4 5 20 24.134712  72.259440
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 4 5 20 254.024201  -11.693185
 Obj: 2023 4 5 20 355.815739  8.311209
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 4 5 20 100.773661  -6.551949
 Obj: 2023 4 5 20 321.417081  -64.105520
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 4 5 20 120.282097  31.376672
 Obj: 2023 4 5 20 19.817131  -8.188094
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1163119/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:
Wed Apr  5 16:19:02 EDT 2023