Analysis BLLac Oct 2022
Contents
BL Lacertae flare Oct 2022
General information
- Name of the source: BL Lacertae
- Brief description of the source:
- IBL / LBL
- highly variable
- z = 0.069
- RA: 22 02 43.3 (hh mm ss), Dec: +42 16 40 (dd mm ss)
- RA, Dec in deg (ICRS): 330.68038, 42.277772
Data-taking information
- Dates of data-taking:
- 2022-10-20 (2.5 h)
- ZD: 16 - 42 deg
- Transmission9km: n/a
- Runs: 9753, 9754, 9755, 9756, 9757, 9758, 9759, 9760, 9761
- Joint observations with MAGIC
- https://www.lst1.iac.es/datacheck/observation_overview/2022/10/CameraDailyCheck20221020.pdf
- 2022-10-20 (2.5 h)
DL1 data
Standard run-wise data files produced by LSTOSA.
- tailcut 8-4 (with cleaning based on pedestal RMS)
/fefs/aswg/data/real/DL1/20221020/v0.9/tailcut84/
Fast analysis by Seiya Nozaki (source-dependent analysis)
DL2 data
- lstchain v0.9.6
- source-dependent
Significance of the detection
- 1 Off reflected position
- cut
- intensity > 100
- gammaness > 0.7
- alpha < 10
- statistics
- Number of ON events: 128864
- Number of OFF events: 113599
- Excess: 15265
- Li&Ma significance: 31 sigma
DL3 analysis
- gammapy 0.20.1
- cut
- intensity > 0
- r: [0, 1]
- wl: [0.01, 1]
- event_type = 32
- 70% efficiency gammaness cut (min_gh_cut=0.1, max_gh_cut=0.95
- 70% efficiency gammaness cut (min_alpha_cut=1, min_alpha_cut=20)
- 2022-10-20 (SED)
- 2022-10-20 (LC)
- > 100 GeV: (6.29 +/- 0.20) x 1E-10 / (cm2 s)
Fast analysis by Chaitanya Priyadarshi (source-independent analysis)
https://www.lst1.iac.es/wiki/index.php/Analysis_BLLac_Oct_2022_w_IRF_interpolation_Priyadarshi