TDRSS lightcurve for Trigger=1034325

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 22 Feb 21 22:37:59 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1034325,   Seg_Num: 0
GRB_RA:          154.621d {+10h 18m 29s} (J2000),
                 154.879d {+10h 19m 31s} (current),
                 154.013d {+10h 16m 03s} (1950)
GRB_DEC:         -14.898d {-14d 53' 52"} (J2000),
                 -15.005d {-15d 00' 15"} (current),
                 -14.647d {-14d 38' 49"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5534 [cnts]    Image_Peak=167 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   444     E_range: 15-50 keV
BKG_INTEN:       58294 [cnts]
BKG_TIME:        81413.44 SOD {22:36:53.44} UT
BKG_DUR:         24 [sec]
GRB_DATE:        19267 TJD;    53 DOY;   21/02/22
GRB_TIME:        81446.27 SOD {22:37:26.27} UT
GRB_PHI:          82.77 [deg]
GRB_THETA:        28.46 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.34 [sigma]
IMAGE_SIGNIF:    7.45 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +1  -2  +0  +0 +90  +0 
SUN_POSTN:       336.40d {+22h 25m 35s}   -9.85d {-09d 50' 48"}
SUN_DIST:        155.10 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      100.72d {+06h 42m 54s}  +25.03d {+25d 01' 54"}
MOON_DIST:        66.24 [deg]
MOON_ILLUM:      79 [%]
GAL_COORDS:      256.80, 33.94 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      162.35,-23.62 [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 = 351.11,16.70 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 22 Feb 21 22:58:54 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1034325,   Seg_Num: 0
GRB_RA:          154.621d {+10h 18m 29s} (J2000),
                 154.879d {+10h 19m 31s} (current),
                 154.013d {+10h 16m 03s} (1950)
GRB_DEC:         -14.898d {-14d 53' 52"} (J2000),
                 -15.005d {-15d 00' 15"} (current),
                 -14.647d {-14d 38' 49"} (1950)
GRB_DATE:        19267 TJD;    53 DOY;   21/02/22
GRB_TIME:        81446.27 SOD {22:37:26.27} UT
TRIGGER_INDEX:   444
GRB_PHI:          82.77 [deg]
GRB_THETA:        28.46 [deg]
DELTA_TIME:      77.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.34 [sigma]
IMAGE_SIGNIF:    7.45 [sigma]
LC_URL:          sw01034325000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 22:37:26 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210222 ***A*** (trigger=1034325).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 154.621, -14.898 which is 
   RA(J2000) = 10h 18m 29s
   Dec(J2000) = -14d 53' 52"
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 ~1250 counts/sec (15-350 keV), at ~1 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: 2.048 s +/- 0.128 s
  Estimated T50 duration: 1.024 s +/- 0.286217 s
  Estimated Peak Interval: MET   635726274.36800003 +/- 0.500000 s
  Estimated background rate 1:     4372.054 near MET 635726261.312000 s
  Estimated background rate 2:     4232.111 near MET 635726382.208000 s
  Estimated total duration: 31.872 s (for data selection)
       (from MET 635726273.024000 to MET 635726304.896000)
  Estimated total fluence: 847.196855 count
  Created GTI with 4 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 154.621 -14.898 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 154.621 -14.898
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: 2021 2 22 22 69.065543  9.358649
 Obj: 2021 2 22 22 270.061370  -24.247661
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 22 22 45.037354  36.450246
 Obj: 2021 2 22 22 252.157861  -52.618919
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 22 22 38.066475  38.553615
 Obj: 2021 2 22 22 244.110446  -56.683339
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 22 22 342.011418  58.904567
 Obj: 2021 2 22 22 121.726197  -81.125674
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 22 22 265.399607  26.563065
 Obj: 2021 2 22 22 62.621843  -13.727874
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 22 22 282.980481  1.390299
 Obj: 2021 2 22 22 82.934390  -16.659229
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 22 22 100.507028  -38.152505
 Obj: 2021 2 22 22 305.225690  24.623796
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 22 22 88.772245  17.668435
 Obj: 2021 2 22 22 289.667053  -3.558545
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1034325/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:
Mon Feb 22 17:59:23 EST 2021