Fast Analysis IC310 ToO Feb Mar 2024 P062

Fast analysis IC310 ToO P062 (March 2024)

General information

• Name of the source: IC 310
• Brief description of the source:
  • Object type : AGN radio galaxy
  • Redshift (z) : 0.0189
  • Other relevant information: Observations triggered LHAASO ATel #16513, 0.5 CU > 1 TeV.
  • RA: 03 16 43.0 (hh mm ss), Dec: +41 19 29 (dd mm ss)
  • RA, Dec in deg (ICRS): 262.02938006, 12.26096821

See also general wiki page of NGC1275 and IC310

• Analysis by:
  • Daniel Morcuende (IAA-CSIC - dmorcuende@iaa.es)

Data-taking information

• Dates of data-taking:
  • Date (time of observation h): 2024-03-10 (1.8 h livetime)
    • ZD range (deg): 45 - 65 deg
    • AZ range (deg):
    • Dark NSB
    • https://www.lst1.iac.es/datacheck/observation_overview/2024/03/run_summary_2024_03_10.pdf
    • Runs:

'2024-03-10': [17018, 17019, 17020, 17021, 17022, 17023]

• Joint observations with MAGIC? : No

General analysis information

• source-independent analysis
• lstchain v0.10.7

Monte Carlo information

• All-sky MC production used: 20240131_allsky_v0.10.5_all_dec_base
  • Declination line (training): dec_2276

DL1 data

LSTOSA standard production (v0.10/tailcut84) of DL1b run-wise merged files.

/fefs/aswg/data/real/DL1/YYYYMMDD/v0.10/tailcut84/dl1_LST-1.Run?????.h5

Random forest

Source declination is 12.3 deg. Two closest MC declination tracks are 9.31 deg and 22.76 deg. To avoid problems with a declination track with lower culmination than that of the data. I choose the 22.76 deg MC declination path which is the closest one to the source towards La Palma latitude value (28.8 deg)

/fefs/aswg/data/models/AllSky/20240131_allsky_v0.10.5_all_dec_base/dec_2276

DL2 data

Config file:

Files in:

/fefs/aswg/workspace/daniel.morcuende/data/real/DL2/PKS1725/dec_2276

DL3 data & IRF

 "EventSelector": {
   "filters": {
     "intensity": [50, Infinity],
     "width": [0, Infinity],
     "length": [0, Infinity],
     "r": [0, 1],
     "wl": [0.01, 1],
     "leakage_intensity_width_2": [0, 1],
     "event_type": [32, 32]
   }
 },
 "DL3Cuts": {
   "min_event_p_en_bin": 100,
   "min_gh_cut": 0.1,
   "max_gh_cut": 0.95,
   "min_theta_cut": 0.0,
   "max_theta_cut": 0.2,
   "fill_theta_cut": 0.2,
   "allowed_tels": [1]
 },

• 70 % efficiency for both gammaness and theta gamma-ray selection cuts
• Point-like IRF

High-level analysis

• Gammapy 1.1
• 1D analysis (point-like IRF)

Analysis Results

Theta2 plot

Settings:

• Theta2 cut: 0.04 deg2 for signal extraction
• normalization range 0.1 - 0.4 deg2
• 3 off positions
• Energy range 10 - 1000 GeV

• 2024-03-16