PKS0735 LST1 analysis Cycle I DanielMorcuende
Contents
- 1 Analysis of LST-1 PKS PKS 0735+178 data from observation cycle I
Analysis of LST-1 PKS PKS 0735+178 data from observation cycle I
General information
- Name of the source: PKS 0735+178
- Brief description of the source:
- Object type : blazar, HBL object
- Not detected in VHE, only ULs by VERITAS and H.E.S.S. (VERITAS HESS publication https://arxiv.org/pdf/2306.17819.pdf)
- Redshift (z) : 0.45 ± 0.06 (Nilsson et al. 2012), but it could be an underestimate (true value might be z ≈ 0.8)
- Other relevant information: related to IceCube alert IC211208A
- RA, Dec in deg (ICRS): 114.5308073, 17.70527726
- Analysis by Name (Institute - email)
- Daniel Morcuende (IAA-CSIC, dmorcuende@iaa.es)
- José Manuel Gavilán (IAA-CSIC)
Data-taking information
Cycle I observations from 2023-11-07 to 2024-03-11 (143 data runs)
- Dates of data-taking:
- Date (time of observation h)
- ZD range (deg):
- Date (time of observation h)
Dataset after good quality selection
File:Pks0735 LST1 quality selection cycle I dmorcuende.png
Number of runs (% is w.r.t. those in Sky region & zenith range):
In the requested Sky region and range of dates: 160
+ zenith in requested range: 160
+ NSB in requested range: 148 (92.5%)
+ FF and pedestal interleaved events are present: 148 (92.5%)
+ Stable pointing: 145 (90.6%)
+ dR/dI fit P-value ok: 144 (90.0%)
+ dR/dI LS periodogram ok: 139 (86.9%)
+ dR/dI index ok: 139 (86.9%)
+ dR/dI rate ok: 103 (64.4%)
+ intensity threshold ok: 103 (64.4%)
Total observation time: 27.60 h
Total number of runs: 103 (in 24 nights)
'2023-11-07': [15306, 15307, 15308, 15309, 15310, 15311],
'2023-11-08': [15339, 15340, 15341, 15342, 15343, 15344, 15345],
'2023-11-10': [15415, 15416],
'2023-11-11': [15443, 15444, 15445, 15446, 15448],
'2023-11-12': [15479, 15480, 15481, 15482, 15483, 15484, 15485, 15486],
'2023-11-13': [15520, 15521, 15522],
'2023-11-16': [15632, 15633, 15634, 15635, 15636, 15642, 15643, 15644, 15645, 15646],
'2023-11-17': [15676, 15677, 15678, 15679, 15680, 15681, 15682, 15683],
'2023-11-18': [15714, 15715, 15718, 15719, 15720, 15721],
'2023-12-07': [15873, 15874, 15875, 15876, 15877],
'2023-12-08': [15908, 15909, 15910],
'2023-12-09': [15940, 15941],
'2023-12-13': [16076, 16077],
'2024-01-09': [16290, 16291, 16292],
'2024-01-31': [16449, 16450],
'2024-02-06': [16590, 16591, 16592],
'2024-02-07': [16620, 16621, 16622, 16623, 16624, 16625],
'2024-02-10': [16669, 16670, 16671],
'2024-02-11': [16711, 16712, 16713],
'2024-02-12': [16741, 16742, 16743],
'2024-02-28': [16893, 16894],
'2024-03-03': [16902, 16903, 16904, 16905, 16906, 16907],
'2024-03-10': [17024, 17026, 17027],
'2024-03-11': [17066, 17070],
File:Pk0735 LST1 rel light yield cycle I dmorcuende.png
Analysis information
- lstchain v0.10
- source-independent analysis
- Gammapy v1.1
Monte Carlo information
Closest declination line towards La Palma latitude (28.8 deg)
20240131_allsky_v0.10.5_all_dec_base/?
DL1 data
Standard DL1b files produced by LSTOSA (lstchain v0.10, tailcut 8-4 with cleaning based on pedestal RMS, dynamic cleaning)
/fefs/aswg/data/real/DL1/YYYYMMDD/v0.10/tailcut84/dl1_LST-1.Run?????.h5
Random forest
Models:
/fefs/aswg/data/models/AllSky/20240131_allsky_v0.10.5_all_dec_base/?
DL2
Files:
/fefs/aswg/workspace/daniel.morcuende/data/real/DL2/PKS0735
IRF and DL3 data selection
DL3 files:
/fefs/aswg/workspace/daniel.morcuende/data/real/DL3/PKS0735/20240131_allsky_v0.10.5_all_dec_base/?
- IRF linear interpolation
- intensity > 50 p.e.
- gammaness energy-dependent cuts with 70% efficiency
- theta energy-dependent cuts 70% efficiency
High-level analysis
- Science Tool: Gammapy 1.1
- point-like IRF, 1D analysis
Analysis Results
Theta2 plot
Theta2 plots (Effective time: 5.185 h; Elapsed time: 5.463 h)
No detection in 26.1 h (effective time)
File:Pks0735 LST1 theta2 LE cycle I dmorcuende.png
Energy range: 0.0 - 0.2 TeV Excess: 3096.0; Off: 1090168 Gamma rate: 2.0 events / minute Off rate: 697.3 events / minute alpha (backg normalization): 1.00 Li & Ma Significance: 2.1 standard deviations
File:Pks0735 LST1 theta2 HE cycle I dmorcuende.png
Energy range: 0.2 - 1000000.0 TeV Excess: 59.0; Off: 2214 Gamma rate: 0.0 events / minute Off rate: 1.4 events / minute alpha (backg normalization): 0.33 Li & Ma Significance: 1.9 standard deviations
Significance map
Excess map
Spectral results
- Fermi-LAT 3FHL and 3FGL SED shown.
- Spectral model plotted corresponds to the Fermi-LAT data, extended to VHE.
File:Pks0735 LST1 SED ULs cycle I dmorcuende.png
