GRB220302A

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Revision as of 11:14, 8 March 2022 by Kenta.T (talk | contribs) (Analysis by Kenta)
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Go back to Transient observation logbook.


Alert Information[edit]

  • Name/type of the alert: Name
  • GCN notice: https://gcn.gsfc.nasa.gov/other/1094950.swift
  • Triggered by: Swift-BAT
  • Alert coordinates:
    • RA: 20 05 44 (hh mm ss), Dec: +49 23 20 (dd mm ss)
    • RA, Dec in deg (ICRS): 301.432, +49.389
  • Alert arrival time: 2022-03-02 07:41:17 UTC
  • Other relevant information:
    • Redshift (z):

LST Observations[edit]

  • Dates of data-taking: 2022-03-02
    • 2022-03-02
      • Zenith range (deg): 61 -> 52
      • Transmission9km:
      • Observation condition: dark
      • Observation mode: std wobbles
      • Runs: 7219 - 7221
      • Joint observations with MAGIC? : Yes
      • ELOG link: Logbook URL
      • Important comments: delay, ...

Analysis by Kenta[edit]

Analysis configuration[edit]

  • Analyzer: Kenta Terauchi (Kyoto Univ., email: terauchi.kenta.74s@st.kyoto-u.ac.jp)
  • Software versions:
    • lstchain v0.9.2
  • Cuts and parameters used:
    • intensity > 50
    • gammaness > 0.7
    • leakage < 0.2
  • DL1 files :

Used DL1b files produced by LSTOSA (lstchain v0.9.X)

/fefs/aswg/data/real/DL1/20220302/v0.9/tailcut84/dl1_LST-1.Run0{7219,7220,7221}.h5
  • Random Forest :

src-indep (diffuse gamma, src_r<3deg, disp_norm)

/fefs/aswg/data/models/20200629_prod5_trans_80/zenith_20deg/south_pointing/20220215_v0.9.1_prod5_trans_80_local_tailcut_8_4
  • DL2 MC data for IRF:
  • Overall selected observation time: 48 min
  • Position analyzed: 301.432, +49.389 (deg)
  • Analysis/data problems:

Theta2 plot[edit]

  • theta < 0.2
  • norm_range_theta2: 0.3 - 0.5


Theta2 plot for GRB220302A.
Theta2 plot for GRB220302A.