Difference between revisions of "Analysis BLLac July 2021"
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** RA: 22 02 43.3 (hh mm ss), Dec: +42 16 40 (dd mm ss) | ** RA: 22 02 43.3 (hh mm ss), Dec: +42 16 40 (dd mm ss) | ||
** RA, Dec in deg (ICRS): 330.68038, 42.277772 | ** RA, Dec in deg (ICRS): 330.68038, 42.277772 | ||
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| + | * Analysis by Daniel Morcuende (UCM, Madrid - dmorcuen@ucm.es) | ||
==Data-taking information== | ==Data-taking information== | ||
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***Runs: 5251 - 5252 | ***Runs: 5251 - 5252 | ||
***Joint observations with MAGIC | ***Joint observations with MAGIC | ||
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| + | ** 2021-07-15 (TBC h) | ||
| + | ***ZD: 14 - 21 deg | ||
| + | ***Transmission9km: > 80 % | ||
| + | ***Runs: 5273 - 5276 | ||
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==DL2 data== | ==DL2 data== | ||
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*fixed_gh_cut: 0.7 | *fixed_gh_cut: 0.7 | ||
*fixed_theta_cut: 0.2 | *fixed_theta_cut: 0.2 | ||
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| + | ==High-level analysis== | ||
| + | |||
| + | *Science Tool: gammapy 0.18.2 (+ bugfix https://github.com/gammapy/gammapy/pull/3374) | ||
==Significance of the detection== | ==Significance of the detection== | ||
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1 Off reflected position | 1 Off reflected position | ||
Theta2 cut: 0.04 deg | Theta2 cut: 0.04 deg | ||
| + | |||
| + | * Squares: Background | ||
| + | * Circles: Signal events | ||
===Date: 2021-07-09=== | ===Date: 2021-07-09=== | ||
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[[File:Theta2_BLLac_2021-07-12_DMorcuende.png|500px]] | [[File:Theta2_BLLac_2021-07-12_DMorcuende.png|500px]] | ||
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| + | ===Date: 2021-07-15=== | ||
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| + | [[File:Theta2_BLLac_2021-07-15_DMorcuende.png|500px]] | ||
===Stacked=== | ===Stacked=== | ||
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Latest revision as of 12:17, 19 November 2021
Contents
BL Lacertae flare July 2021[edit]
General information[edit]
- 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
- Analysis by Daniel Morcuende (UCM, Madrid - dmorcuen@ucm.es)
Data-taking information[edit]
- Dates of data-taking:
- 2021-07-09 (0.41 h)
- ZD: 23 - 26 deg
- Transmission9km: ~90%
- Runs: 5219, 5220
- Joint observations with MAGIC
- 2021-07-09 (0.41 h)
- 2021-07-10 (1.56 h)
- ZD: 20 - 40 deg
- Transmission9km: 50% - 60%
- Runs: 5229 - 5235
- Joint observations with MAGIC (runs 5229, 5230)
- 2021-07-10 (1.56 h)
- 2021-07-12 (0.49 h)
- ZD: 43 - 47 deg
- Transmission9km: < 50%
- Runs: 5251 - 5252
- Joint observations with MAGIC
- 2021-07-12 (0.49 h)
- 2021-07-15 (TBC h)
- ZD: 14 - 21 deg
- Transmission9km: > 80 %
- Runs: 5273 - 5276
- 2021-07-15 (TBC h)
DL2 data[edit]
Standard run-wise data files produced by LSTOSA.
- lstchain v0.7.3
- tailcut 8-4 (with cleaning based on pedestal RMS)
/fefs/aswg/data/real/DL2/20210709/v0.7.3/tailcut84/dl2_LST-1.Run05219.h5 /fefs/aswg/data/real/DL2/20210709/v0.7.3/tailcut84/dl2_LST-1.Run05220.h5 /fefs/aswg/data/real/DL2/20210710/v0.7.3/tailcut84/dl2_LST-1.Run05229.h5 /fefs/aswg/data/real/DL2/20210710/v0.7.3/tailcut84/dl2_LST-1.Run05230.h5 /fefs/aswg/data/real/DL2/20210710/v0.7.3/tailcut84/dl2_LST-1.Run05231.h5 /fefs/aswg/data/real/DL2/20210710/v0.7.3/tailcut84/dl2_LST-1.Run05232.h5 /fefs/aswg/data/real/DL2/20210710/v0.7.3/tailcut84/dl2_LST-1.Run05233.h5 /fefs/aswg/data/real/DL2/20210710/v0.7.3/tailcut84/dl2_LST-1.Run05234.h5 /fefs/aswg/data/real/DL2/20210710/v0.7.3/tailcut84/dl2_LST-1.Run05235.h5 /fefs/aswg/data/real/DL2/20210712/v0.7.3/tailcut84/dl2_LST-1.Run05251.h5 /fefs/aswg/data/real/DL2/20210712/v0.7.3/tailcut84/dl2_LST-1.Run05252.h5
DL3 data selection[edit]
- intensity > 30
- r: [0, 1 ]
- wl: [0.05, 1]
- leakage_intensity_width_2: [0, 0.2 ]
- fixed_gh_cut: 0.7
- fixed_theta_cut: 0.2
High-level analysis[edit]
- Science Tool: gammapy 0.18.2 (+ bugfix https://github.com/gammapy/gammapy/pull/3374)
Significance of the detection[edit]
1 Off reflected position Theta2 cut: 0.04 deg
- Squares: Background
- Circles: Signal events
Date: 2021-07-09[edit]
- List of runs: [5219, 5220]
- Observation time: 0.41 h
- Number of ON events: 257
- Number of OFF events: 234 +/- 15
- Excess: 23 +/- 22
- Li&Ma significance: 1.0 sigma
Date: 2021-07-10[edit]
- List of runs: [5229, 5230, 5231, 5232, 5233, 5234, 5235]
- Observation time: 1.56 h
- Number of ON events: 598
- Number of OFF events: 351 +/- 19
- Excess: 247 +/- 31
- Li&Ma significance: 8.1 sigma
Date: 2021-07-12[edit]
- List of runs: [5251, 5252]
- Observation time: 0.49 h
- Number of ON events: 26
- Number of OFF events: 31 +/- 6
- Excess: -5 +/- 8
- Li&Ma significance: -0.7 sigma
Date: 2021-07-15[edit]
Stacked[edit]
- List of runs: [5219, 5220, 5229, 5230, 5231, 5232, 5233, 5234, 5235, 5251, 5252]
- Observation time: 2.46 h
- Number of ON events: 881
- Number of OFF events: 616 +/- 25
- Excess: 265 +/- 39
- Li&Ma significance: 6.9 sigma
Spectral analysis[edit]
Effective area
Migration Matrix and exposure
- 2021-07-10
- PowerLaw fit:
- index: 3.5 +/- 0.2
- E_ref: 0.1 TeV
- amplitude: 1.3 +/- 0.2 10^-9 cm-2 s-1 TeV-1
