TDRSS lightcurve for Trigger=1032350

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 13 Feb 21 00:10:30 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1032350,   Seg_Num: 0
GRB_RA:          277.660d {+18h 30m 38s} (J2000),
                 277.944d {+18h 31m 47s} (current),
                 276.987d {+18h 27m 57s} (1950)
GRB_DEC:          -6.748d {-06d 44' 52"} (J2000),
                  -6.732d {-06d 43' 55"} (current),
                  -6.784d {-06d 47' 00"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       530 [cnts]    Image_Peak=119 [image_cnts]
TRIGGER_DUR:     0.032 [sec] 
TRIGGER_INDEX:   10309     E_range: 15-50 keV
BKG_INTEN:       26961 [cnts]
BKG_TIME:        597.50 SOD {00:09:57.50} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19258 TJD;    44 DOY;   21/02/13
GRB_TIME:        613.82 SOD {00:10:13.82} UT
GRB_PHI:         -165.50 [deg]
GRB_THETA:        13.90 [deg]
SOLN_STATUS:     0xD
RATE_SIGNIF:     40.44 [sigma]
IMAGE_SIGNIF:    12.80 [sigma]
MERIT_PARAMS:     +0  +0 +124  -5  +1  +2  +0  +1 -65  +0 
SUN_POSTN:       326.81d {+21h 47m 13s}  -13.35d {-13d 21' 02"}
SUN_DIST:         48.49 [deg]   Sun_angle= 3.3 [hr] (West of Sun)
MOON_POSTN:      342.57d {+22h 50m 17s}  -12.79d {-12d 47' 21"}
MOON_DIST:        63.84 [deg]
MOON_ILLUM:      2 [%]
GAL_COORDS:       24.56,  1.52 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      277.93, 16.48 [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 matches a source in the on-board catalog: Num=10211=(null) (probably an AT_Slot).  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        This trigger occurred at longitude,latitude = 97.00,20.14 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 13 Feb 21 00:30:49 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1032350,   Seg_Num: 0
GRB_RA:          277.660d {+18h 30m 38s} (J2000),
                 277.944d {+18h 31m 47s} (current),
                 276.987d {+18h 27m 57s} (1950)
GRB_DEC:          -6.748d {-06d 44' 52"} (J2000),
                  -6.732d {-06d 43' 55"} (current),
                  -6.784d {-06d 47' 00"} (1950)
GRB_DATE:        19258 TJD;    44 DOY;   21/02/13
GRB_TIME:        613.90 SOD {00:10:13.90} UT
TRIGGER_INDEX:   10309
GRB_PHI:         -165.50 [deg]
GRB_THETA:        13.90 [deg]
DELTA_TIME:      -39.00 [sec]
TRIGGER_DUR:     0.032 [sec] 
SOLN_STATUS:     0xD
RATE_SIGNIF:     40.44 [sigma]
IMAGE_SIGNIF:    12.80 [sigma]
LC_URL:          sw01032350000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 00:10:13 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210213 ***A*** (trigger=1032350).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 277.660, -6.748 which is 
   RA(J2000) = 18h 30m 38s
   Dec(J2000) = -06d 44' 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 ~4468 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: 4.608 s +/- 1.984 s
  Estimated T50 duration: 2.176 s +/- 0.896 s
  Estimated Peak Interval: MET   634867840.89599991 +/- 0.500000 s
  Estimated background rate 1:     5871.155 near MET 634867828.224000 s
  Estimated background rate 2:     5624.057 near MET 634867951.168000 s
  Estimated total duration: 35.968 s (for data selection)
       (from MET 634867840.448000 to MET 634867876.416000)
  Estimated total fluence: 1027.204842 count
  Created GTI with 5 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 277.660 -6.748 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 277.660 -6.748
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 13 0 85.063429  -15.376807
 Obj: 2021 2 13 0 129.751006  -46.724408
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 13 0 64.969742  13.122706
 Obj: 2021 2 13 0 97.024162  -23.884516
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 13 0 60.734521  16.854083
 Obj: 2021 2 13 0 94.257195  -18.701511
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 13 0 32.890168  51.142666
 Obj: 2021 2 13 0 76.149358  16.805779
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 13 0 248.779533  53.225647
 Obj: 2021 2 13 0 149.252329  62.207963
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 13 0 304.909154  21.567699
 Obj: 2021 2 13 0 355.874268  48.759476
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 13 0 122.515576  -64.489460
 Obj: 2021 2 13 0 234.305815  -56.390004
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 13 0 70.854906  -5.789167
 Obj: 2021 2 13 0 38.463135  -45.265309
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1032350/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:
Fri Feb 12 19:31:23 EST 2021