Fast Offline Analysis Cyg X-3 June 2024 P066

Fast offline analysis Cyg X-3 June 2024 P066

General information

• Name of the source: Cyg X-3
• Brief description of the source:
  • Object type : X-Ray Binary
  • Redshift (z) : 0
  • Other relevant information
  • RA: 20 32 25.78 (hh mm ss), Dec: +40 57 27.9 (dd mm ss)
  • RA, Dec in deg (ICRS): 308.1 , 41.0

• Analysis by:
  • Juan Bernete (CIEMAT - juan.bernete@ciemat.es)

Data-taking information

• Dates of data-taking:
  • Dates: 2024-06-30 (2.48 h), 2024-07-01 (4.02 h)
  • ZD range (deg): 10 - 45
  • Observations:

2024-06-30: [17943 17944 17945 17947 17948 17949 17950 17951 17952 17953 17954 17956
17957]
2024-07-01: [17974 17975 17976 17977 17978 17979 17980 17981 17982 17983 17984 17985]

• Data quality selection: all runs survive the data quality selection.
• Joint observations with MAGIC?: yes
• Information on data-taking (observations summaries): 2024-06-30: Some of the runs are not mentioned on the ELOG. 2024-07-01: Spikes in rates, RTA shows around 3 sigma and a visible hotspot slightly south of the nominal position.

General analysis information

• source-independent analysis
• lstchain version: v0.10.11
• DL1b standard production (v0.10/tailcut84), run-wise merged files in:

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

Monte Carlo information

Write below the MC production ID among the existing MC

• All-sky MC production used: 20240131_allsky_v0.10.5_all_dec_base
• Declination line (training): dec_3476

Random forest

Path to the models used:

/fefs/aswg/data/models/AllSky/20240131_allsky_v0.10.5_all_dec_base/dec_3476

DL2 data

Config file:

Files in:

/fefs/aswg/workspace/juan.bernete/fastanalysis/CygX3/DL2

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 and results

Analysis settings

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

Theta2 plot

Settings:

• Theta2 cut for signal extraction: 0.04 deg2
• Normalization range: 0.1 - 0.4 deg2
• Number of off positions: 3
• Energy range: 0.01 - 10 TeV

Daily results

• 2024-06-30: No detection

Significance and Excess sky maps

Excluded region of MGRO J2031+41