Fast Offline Analysis Cyg X-3 July-August 2024 P067

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): 308.10741667, 40.95775

• Analysis by:
  • Irene Jiménez Martínez (MPP - irenejm@mpp.mpg.de)

Data-taking information

• Dates of data-taking:
  • Dates: 2024-07-27, 2024-08-13
  • ZD range (deg): 13 - 35
  • Observations:

2024-07-27: [18292 18293 18294 18295 18296 18297 18298 18299] (? h)

• Data quality selection: ?
• Joint observations with MAGIC?: yes
• Information on data-taking (observations summaries): there seems to be a problem producing DL1 files because of recent changes in the EVB.

2024-08-13: [18608 18609 18610 18611 18612 18613 18614 18615 18616] (2.8 h)

• Data quality selection: No runs survive the data quality cuts: they survive all but dR/dI rate and intensity threshold. Analysis performed with all of them.
• Joint observations with MAGIC?: yes
• Information on data-taking (observations summaries): A few spikes reported by the shifters, but rates seem pretty stable otherwise. https://www.lst1.iac.es/datacheck/observation_overview/2024/08/run_summary_2024_08_12.pdf In this run summary almost no information appear for the last three plots.

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/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18608.h5
/fefs/aswg/data/real/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18609.h5
/fefs/aswg/data/real/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18610.h5
/fefs/aswg/data/real/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18611.h5
/fefs/aswg/data/real/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18612.h5
/fefs/aswg/data/real/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18613.h5
/fefs/aswg/data/real/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18614.h5
/fefs/aswg/data/real/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18615.h5
/fefs/aswg/data/real/DL1/20240812/v0.10/tailcut84/dl1_LST-1.Run18616.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:

/fefs/aswg/data/models/AllSky/20240131_allsky_v0.10.5_all_dec_base/dec_3476/lstchain_config_2024-01-31.json

Files in:

/fefs/aswg/workspace/irene.jimenez/FOA/CygX3_20240812_data/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

Stacked observations

2024-08-12:

• Stacked

Significance and Excess sky maps

• Stacked

Spectral results

SED:

• Stacked