GRB220603A

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Alert Information

• Name/type of the alert:
• GCN notice: [1]
• Triggered by: Fermi GBM
• Alert coordinates:
  • RA: 18 h 56 m 36.000 s, Dec: +18 deg 50 m 24.000 s
  • RA, Dec in deg (ICRS): 284.15000 deg, 18.84000 deg
• Alert arrival time: 23:49:39 UTC
• Other relevant information:
  • Redshift (z):

LST Observations

• Dates of data-taking: 2022-06-03
  • 2022-06-03
    • Zenith range (deg): 41.8 --> 10
    • Transmission9km: 0.8-0.9
    • Observation condition: dark
    • Observation mode: std wobble
    • Runs: 8623 - 8636
    • Joint observations with MAGIC? : No
    • ELOG link: [2]
    • Important comments: run 8623 and 8624 can be skipped due to software problems, run 8632 reset the DTs, run 8633 can be skipped due to software problem

Analysis by Alice (INAF)

Data info

• Overall selected observation time: 201.08 min (3.35 h)
• Selected runs: '8625', '8626', '8627', '8628', '8629', '8630', '8631', '8632', '8633', '8634', '8635', '8636'
• Position analyzed: RA 284.15 deg, Dec 18.84 deg

DL1 data

Used DL1b files produced by LSTOSA (lstchain v0.9.6)

/fefs/aswg/data/real/DL1/20220603/v0.9/tailcut84/

DL2 data

• Random forest:

/fefs/aswg/data/models/AllSky/20220511_allsky_std/dec_2276

• lstchain v0.9.6 with config file taken from the All Sky model

/fefs/aswg/data/models/AllSky/20220511_allsky_std/dec_2276/lstchain_84.json

Theta2 plot from DL2

• Cuts and parameters used:
  • intensity > 50
  • gammaness > 0.7
  • leakage < 0.2

Theta2 plot for GRB220603A.

Excess plot for GRB220603A.