GRB221024A

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Alert Information

• Name/type of the alert:
• GCN notice: [1]
• Triggered by: Swift BAT
• Alert coordinates:
  • RA: 11 h 18 m 52.368 s, Dec: +33 deg 2 m 27.600 s
  • RA, Dec in deg (ICRS): 169.71820 deg, 33.04100 deg
• Alert arrival time: 13:01:02 UTC
• Other relevant information:
  • Redshift (z):

LST Observations

• Dates of data-taking: 2022-10-25
  • 2022-10-25
    • Zenith range (deg): 61 -> 56.27
    • Transmission9km: n/a
    • Observation condition: dark
    • Observation mode: std wobble
    • Runs: 9886 - 9887
    • Joint observations with MAGIC? : No
    • ELOG link: [2]
    • Important comments: cloudy night

Analysis by Alice

Data info

• Overall selected observation time: 29.32 min (0.49 h)
• Selected runs: 9886 - 9887
• Position analyzed: RA 169.71820 deg, Dec 33.04100 deg

DL1 data

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

/fefs/aswg/data/real/DL1/20221024/v0.9/tailcut84/

DL2 data

• Random forest:

/fefs/aswg/data/models/AllSky/20220511_allsky_std/dec_3476

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

/fefs/aswg/data/models/AllSky/20220511_allsky_std/dec_3476/lstchain_84.json

Theta2 plot from DL2

• Cuts and parameters used:
  • intensity > 50
  • gammaness > 0.6
  • leakage < 0.2
  • norm_range_theta2_min=0.2
  • norm_range_theta2_max=0.5

Theta2 plot for GRB221024A.