Difference between revisions of "Analysis BLLac July 2021"

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(Significance of the detection)
(Data-taking information)
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==Data-taking information==
 
==Data-taking information==
 
* '''Dates of data-taking''':  
 
* '''Dates of data-taking''':  
** 2021-07-09 (~0.4 h)
+
** 2021-07-09 (0.41 h)
 
***ZD: 23 - 26 deg
 
***ZD: 23 - 26 deg
 
***Transmission9km: ~90%
 
***Transmission9km: ~90%
Line 19: Line 19:
 
***Joint observations with MAGIC
 
***Joint observations with MAGIC
  
** 2021-07-10 (~1.6 h)
+
** 2021-07-10 (1.56 h)
 
***ZD: 20 - 40 deg
 
***ZD: 20 - 40 deg
 
***Transmission9km:  50% - 60%
 
***Transmission9km:  50% - 60%
Line 25: Line 25:
 
***Joint observations with MAGIC (runs 5229, 5230)
 
***Joint observations with MAGIC (runs 5229, 5230)
  
** 2021-07-12 (~1.6 h)
+
** 2021-07-12 (0.49 h)
 
***ZD: 43 - 47 deg
 
***ZD: 43 - 47 deg
 
***Transmission9km:  < 50%
 
***Transmission9km:  < 50%

Revision as of 13:18, 13 July 2021

BL Lacertae flare July 2021

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:
    • 2021-07-09 (0.41 h)
      • ZD: 23 - 26 deg
      • Transmission9km: ~90%
      • Runs: 5219, 5220
      • Joint observations with MAGIC
    • 2021-07-10 (1.56 h)
      • ZD: 20 - 40 deg
      • Transmission9km: 50% - 60%
      • Runs: 5229 - 5235
      • Joint observations with MAGIC (runs 5229, 5230)
    • 2021-07-12 (0.49 h)
      • ZD: 43 - 47 deg
      • Transmission9km: < 50%
      • Runs: 5251 - 5252
      • Joint observations with MAGIC

DL2 data

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

  • intensity > 30
  • r: [0, 1 ]
  • wl: [0.05, 1]
  • leakage_intensity_width_2: [0, 0.2 ]
  • fixed_gh_cut: 0.7
  • fixed_theta_cut: 0.1

Significance of the detection

  • 2021-07-09:
1 Off reflected position
Theta2 cut: 0.1 deg
Observation time: 0.41 h
Number of ON events: 520
Number of OFF events: 388 +/- 20
Excess: 132 +/- 30
Li&Ma significance: 4.4 sigma
  • 2021-07-10:
  • 2021-07-12:
  • Stacked


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