Fast Analysis IC310 ToO Feb Mar 2024 P062
Contents
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 (6th and 7th March 2024). VERITAS followup ATel #16535 (0.15 Crab units in 2 hours, 10th - 13th March 2024). LHAASO reported renewed activity in ATel #16540 (1.3 C.U. above 1 TeV in 19th March)
- RA: 03 16 43.0 (hh mm ss), Dec: +41 19 29 (dd mm ss)
- RA, Dec in deg (ICRS):
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:
- Date (time of observation h): 2024-03-10 (1.8 h livetime)
'2024-03-10': [17018, 17019, 17020, 17021, 17022, 17023]
- Data taken with a missing module in the camera. The event source plugin of the analysis chain had to be adapted to process the data. Still, it seems the data is problematic because the event type identification is wrong for some runs. As can be seen in the DL1 data checks (https://www.lst1.iac.es/datacheck/dl1/v0.10/20240310/DL1_datacheck_20240310.html). So probably, after all these data cannot be used.
- 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 (from explore DL2 notebook):
- Theta2 cut for signal extraction < 0.02 deg2
- Tight global cut gammaness > 0.95
- 3 off positions
- E > 500 GeV
- Time effective: 1.8 h
- 2024-03-10
No significant excess at energies below