Analysis June 2022 with lstchain v0.9.6/dev Jurysek

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General information

  • Name of the source: LHAASO J2108+5157
  • Brief description of the source:
- Object type : Unidentified Galactic PeVatron candidate
- Distance (pc) : Unknown
- RA, Dec in deg (ICRS): 317.22, 51.95
  • Analysis by Jakub Jurysek (UNIGE, jakub.jurysek@unige.ch)

Run selection

  • Run selection with the use of the notebook from Abelardo Moralejo [1]
  • Atmospheric transmission extracted from ELOG
  • In total 178 runs selected, obstime 49.3 hours (57% of all observations)
  • Interestingly, obstime in the previous analysis was 51.9 hours, even though the number of runs is the same (DL2 for this analysis processed with lstchain v0.9.6, IRFs with lstchain dev (close to v0.9.7))
  • Summary of selection cuts:
- Zenith > 55 deg
- Wobble in (0.45, 0.55)
- elapsed_time > 5 min
- transmission_cut > 0.65
- pedestal charge std dev < 1.8 p.e.
- Cosmic rate > 3000 ev/s
- Cosmic rate( > 10 p.e.) > 20 ev/s
- Cosmic rate( > 30 p.e.) > 3 ev/s
- muon ring width std dev < 0.023
  • List of selected runs:
- 2021-06-04 : [4913, 4914, 4915, 4916, 4917]
- 2021-06-05 : [4935, 4936]
- 2021-06-12 : [5028, 5029, 5030, 5031]
- 2021-06-30 : [5071, 5072]
- 2021-07-01 : [5080, 5081, 5082, 5083, 5084]
- 2021-07-02 : [5091, 5092, 5093]
- 2021-07-03 : [5101, 5102, 5103, 5104, 5105, 5106, 5107, 5108]
- 2021-07-04 : [5115, 5116, 5117, 5118, 5119, 5120, 5121]
- 2021-07-05 : [5135, 5136, 5137, 5138, 5139, 5140, 5141, 5142]
- 2021-07-15 : [5270, 5272]
- 2021-07-30 : [5411, 5412]
- 2021-08-01 : [5440, 5441, 5442]
- 2021-08-03 : [5461, 5462, 5463, 5464, 5465]
- 2021-08-04 : [5473, 5474, 5475, 5476, 5477, 5478, 5479, 5480]
- 2021-08-05 : [5491, 5492, 5493, 5494, 5497, 5498, 5499, 5500]
- 2021-08-06 : [5505, 5506, 5507, 5508, 5509, 5510, 5511, 5512, 5513, 5514, 5515, 5516, 5517]
- 2021-08-08 : [5576]
- 2021-08-09 : [5590, 5591]
- 2021-08-10 : [5641, 5642, 5643]
- 2021-08-11 : [5681, 5682, 5683, 5684, 5685, 5686, 5687]
- 2021-08-12 : [5707, 5708, 5709, 5710, 5711, 5712, 5713]
- 2021-08-13 : [5727]
- 2021-09-01 : [5947, 5948, 5949, 5950, 5952]
- 2021-09-02 : [5980, 5981, 5982, 5983, 5984, 5985, 5986, 5987, 5988, 5989, 5990, 5991]
- 2021-09-03 : [5999, 6000, 6001, 6002, 6003, 6004, 6005, 6006, 6007, 6008, 6009, 6010]
- 2021-09-04 : [6023, 6024, 6034, 6035, 6036, 6037, 6038]
- 2021-09-05 : [6058, 6059, 6060, 6061, 6062, 6063, 6064, 6065, 6066]
- 2021-09-06 : [6079, 6080, 6082, 6083, 6084, 6085]
- 2021-09-07 : [6130, 6131, 6132, 6133, 6134]
- 2021-09-09 : [6175, 6176, 6177, 6178, 6179, 6180, 6181, 6182, 6183]
- 2021-09-11 : [6230, 6231, 6233]
- 2021-09-12 : [6254, 6255, 6256, 6257]

MC information

- AllSkyMC production
- standard DL1 produced in lstmcpipe v0.7.4 (Training DiffuseGammas and Protons, Testing Ring-like gammas), and v0.8.2 (Testing DiffuseGammas)
- RFs training data reconstruction up to DL2 done manually in lstchain v0.9.6 (lstmcpipe wasn't ready for the full AllSky MC at the time of analysis), IRFs created in dev lstchain (close to v0.9.7)
- For IRFs we used only the closest (in zenith) testing nodes to the LHAASO path


  • Nodes used for IRFs:
- node_theta_14.984_az_355.158_
- node_theta_32.059_az_355.158_
- node_theta_43.197_az_262.712_
- node_theta_52.374_az_301.217_


  • NSB tuned:
"image_modifier": {
   "increase_nsb": true,
   "extra_noise_in_dim_pixels": 0.979,
   "extra_bias_in_dim_pixels": 0.339,
   "transition_charge": 8,
   "extra_noise_in_bright_pixels": 1.133,
   "increase_psf": false,
   "smeared_light_fraction": 0.0
}


  • Tuned DL1b MC:
- Training:
/fefs/aswg/workspace/jakub.jurysek/simulations/DL1/AllSky/20220511_allsky_tune_lhaaso/TrainingDataset/dec_4822/GammaDiffuse/dl1_20220511_allsky_tune_lhaaso_dec_4822_GammaDiffuse_merged.h5
/fefs/aswg/workspace/jakub.jurysek/simulations/DL1/AllSky/20220511_allsky_tune_lhaaso/TrainingDataset/dec_4822/Protons/dl1_20220511_allsky_tune_lhaaso_dec_4822_Protons_merged.h5
- Testing:
/fefs/aswg/workspace/jakub.jurysek/simulations/DL1/AllSky/20220511_allsky_tune_lhaaso/TestingDataset/dec_4822/GammaPoint/dl1_20220511_allsky_tune_lhaaso_{NODE}__merged.h5
/fefs/aswg/workspace/jakub.jurysek/simulations/DL1/AllSky/20220511_allsky_tune_lhaaso/TestingDataset/dec_4822/GammaDiffuse/dl1_20220511_allsky_tune_lhaaso_{NODE}__merged.h5


  • Random Forests (source independent):
- Models trained in lstchain v0.9.6, i.e. "az_tel", "alt_tel" are RF features
- cfg file: /fefs/aswg/workspace/jakub.jurysek/simulations/DL1/AllSky/20220511_allsky_tune_lhaaso/lstchain_tune_lhaaso_84.json
/fefs/aswg/workspace/jakub.jurysek/simulations/models/AllSky/20220511_allsky_tune_lhaaso/dec_4822/


  • DL2 MC (testing only):
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