TDRSS lightcurve for Trigger=1118357

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Jul 22 15:49:06 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1118357,   Seg_Num: 0
GRB_RA:          225.021d {+15h 00m 05s} (J2000),
                 225.549d {+15h 02m 12s} (current),
                 223.862d {+14h 55m 27s} (1950)
GRB_DEC:         -69.497d {-69d 29' 48"} (J2000),
                 -69.585d {-69d 35' 06"} (current),
                 -69.298d {-69d 17' 52"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       849 [cnts]    Image_Peak=102 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10427     E_range: 50-350 keV
BKG_INTEN:       16957 [cnts]
BKG_TIME:        56922.41 SOD {15:48:42.41} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19790 TJD;   211 DOY;   22/07/30
GRB_TIME:        56934.89 SOD {15:48:54.89} UT
GRB_PHI:         -155.38 [deg]
GRB_THETA:        37.44 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     55.93 [sigma]
IMAGE_SIGNIF:    10.00 [sigma]
MERIT_PARAMS:     +1  +0  +0  -4  +3  +0  +0  +1 +32  +0 
SUN_POSTN:       129.88d {+08h 39m 31s}  +18.40d {+18d 23' 60"}
SUN_DIST:        109.18 [deg]   Sun_angle= -6.4 [hr] (East of Sun)
MOON_POSTN:      152.90d {+10h 11m 35s}  +16.45d {+16d 27' 01"}
MOON_DIST:        99.53 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      313.83, -9.39 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      247.57,-49.54 [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 = 102.00,-20.26 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Jul 22 16:08:20 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1118357,   Seg_Num: 0
GRB_RA:          225.021d {+15h 00m 05s} (J2000),
                 225.549d {+15h 02m 12s} (current),
                 223.862d {+14h 55m 27s} (1950)
GRB_DEC:         -69.497d {-69d 29' 48"} (J2000),
                 -69.585d {-69d 35' 06"} (current),
                 -69.298d {-69d 17' 52"} (1950)
GRB_DATE:        19790 TJD;   211 DOY;   22/07/30
GRB_TIME:        56935.00 SOD {15:48:55.00} UT
TRIGGER_INDEX:   10427
GRB_PHI:         -155.38 [deg]
GRB_THETA:        37.44 [deg]
DELTA_TIME:      20.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     55.93 [sigma]
IMAGE_SIGNIF:    10.00 [sigma]
LC_URL:          sw01118357000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 15:48:55 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220730 ***A*** (trigger=1118357).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 225.021, -69.497 which is 
   RA(J2000) = 15h 00m 05s
   Dec(J2000) = -69d 29' 48"
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 ~10612 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 T90 duration: 5.504 s +/- 2.88 s
  Estimated T50 duration: 0.128 s +/- 0.128 s
  Estimated Peak Interval: MET   680888964.86399996 +/- 0.500000 s
  Estimated background rate 1:     5323.085 near MET 680888952.704000 s
  Estimated background rate 2:     4851.644 near MET 680889101.568000 s
  Estimated total duration: 87.808 s (for data selection)
       (from MET 680888964.608000 to MET 680889052.416000)
  Estimated total fluence: 1945.380303 count
  Created GTI with 7 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 225.021 -69.497 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 225.021 -69.497
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: 2022 7 30 16 315.951992  63.608425
 Obj: 2022 7 30 16 333.532182  -44.686410
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 7 30 16 272.366565  40.648436
 Obj: 2022 7 30 16 344.194390  -48.249487
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 7 30 16 270.360948  35.562893
 Obj: 2022 7 30 16 346.226873  -51.150194
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 7 30 16 250.155201  -0.644798
 Obj: 2022 7 30 16 5.949596  -39.626883
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 7 30 16 291.501800  -62.484639
 Obj: 2022 7 30 16 20.554761  22.202841
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 7 30 16 192.192952  -36.314056
 Obj: 2022 7 30 16 24.661439  -33.604014
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 7 30 16 83.189668  52.077581
 Obj: 2022 7 30 16 342.552316  -16.192987
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 7 30 16 196.216875  39.627661
 Obj: 2022 7 30 16 339.112291  22.087318
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1118357/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 Jul 30 12:09:24 EDT 2022