Fast Offline Analysis Cyg X-3 June 2024 P066

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Fast offline analysis Cyg X-3 June 2024 P066[edit]

General information[edit]

  • 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[edit]

  • Dates of data-taking:
    • Dates: 2024-06-30 (2.48 h), 2024-07-01 (4.02 h), 2024-07-02 (3.30 h), 2024-07-09 (3.22 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]
2024-07-02: [18001 18002 18003 18004 18005 18006 18007 18008 18009 18010 18011 18012]
2024-07-09: [18175 18176 18177 18178 18179 18180 18181 18182 18183 18184 18185]
  • Data quality selection: all runs survive the data quality selection, except for all the runs on July 2nd (they don't survive the rates cuts, but they were all analyzed anyway).
  • Joint observations with MAGIC?: yes (except for run 18012)
  • 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. 2024-07-02: huge flashes affecting the rates. 2024-07-09: moderate spikes in the rates.

General analysis information[edit]

  • 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[edit]

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[edit]

Path to the models used:

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


DL2 data[edit]

Config file:


Files in:

/fefs/aswg/workspace/juan.bernete/fastanalysis/CygX3/DL2
/fefs/aswg/workspace/daniel.morcuende/analysis/CygX3

DL3 data & IRF[edit]

 "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[edit]

Analysis settings[edit]

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

Theta2 plot[edit]

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[edit]

  • 2024-06-30: No detection

Theta2 CygX-3 20240630 juanbernete.png

  • 2024-07-01: No detection

Target position Cyg X-3:

Theta2 CygX-3 20240701 juanbernete.png

Target position MGRO J2031+41:

Theta2 MGRO J2031+41 20240701 juanbernete.png

  • 2024-07-02: No detection

Target position Cyg X-3:

Theta2 CygX-3 20240702 juanbernete.png

Target position MGRO J2031+41:

Theta2 MGRO J2031+41 20240702 juanbernete.png

  • 2024-07-09: More than 3 sigma for low energies with Cyg X-3 as target position.

Target position Cyg X-3:

Theta2 CygX-3 20240709 juanbernete.png

Target position MGRO J2031+41:

Theta2 MGRO J2031+41 20240709 juanbernete.png

Stacked observations[edit]

Target position Cyg X-3:

Theta2 CygX-3 P066 stacked juanbernete.png

Target position MGRO J2031+41:

Theta2 MGRO J2031+41 P066 stacked juanbernete.png

Significance and Excess sky maps[edit]

Excluded region of MGRO J2031+41

  • 2024-06-30

Skymaps Cyg X-3 20240630 juanbernete.png

TS distribution skymap Cyg X-3 20240630 juanbernete.png

  • Stacked

Skymaps Cyg X-3 P066 stacked juanbernete.png

TS distribution skymap Cyg X-3 P066 stacked juanbernete.png

Spectral results[edit]

SED:

SED Cyg X-3 P066 stacked juanbernete.png


Light curve[edit]