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
 +
 +
* Analysis by Daniel Morcuende (UCM, Madrid - dmorcuen@ucm.es)
  
 
==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 21:
 
***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 27:
 
***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%
 
***Runs: 5251 - 5252
 
***Runs: 5251 - 5252
 
***Joint observations with MAGIC
 
***Joint observations with MAGIC
 +
 +
** 2021-07-15 (TBC h)
 +
***ZD: 14 - 21 deg
 +
***Transmission9km: > 80 %
 +
***Runs: 5273 - 5276
 +
  
 
==DL2 data==
 
==DL2 data==
Line 56: Line 64:
 
*leakage_intensity_width_2: [0, 0.2 ]
 
*leakage_intensity_width_2: [0, 0.2 ]
 
*fixed_gh_cut: 0.7
 
*fixed_gh_cut: 0.7
−
*fixed_theta_cut: 0.1
+
*fixed_theta_cut: 0.2
 +
 
 +
==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==
  
−
* 2021-07-09:
 
 
  1 Off reflected position
 
  1 Off reflected position
−
  Theta2 cut: 0.1 deg
+
  Theta2 cut: 0.04 deg
−
Observation time: 0.41 h
+
 
−
Number of ON events: 520
+
* Squares: Background
−
Number of OFF events: 388 +/- 20
+
* Circles: Signal events
−
Excess: 132 +/- 30
+
 
−
Li&Ma significance: 4.4 sigma
+
===Date: 2021-07-09===
 +
* 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
 +
 
 +
[[File:Theta2_BLLac_2021-07-09_DMorcuende.png|500px]]
 +
 
 +
===Date: 2021-07-10===
 +
* 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
 +
 
 +
[[File:Theta2_BLLac_2021-07-10_DMorcuende.png|500px]]
 +
 
 +
===Date: 2021-07-12===
 +
* 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  
 +
 
 +
[[File:Theta2_BLLac_2021-07-12_DMorcuende.png|500px]]
 +
 
 +
===Date: 2021-07-15===
 +
 
 +
 
 +
[[File:Theta2_BLLac_2021-07-15_DMorcuende.png|500px]]
 +
 
 +
===Stacked===
 +
* 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
 +
 
 +
[[File:Theta2_BLLac_Stacked_DMorcuende.png|500px]]
 +
 
 +
==Spectral analysis==
 +
 
 +
Effective area
 +
 
 +
[[File:Aeff_BLLac.png|500px]]
 +
 
 +
 
 +
Migration Matrix and exposure
 +
 
 +
[[File:Migration_matrix_exposure_BLLac_2021-09-10.png|1500px]]
 +
 
 +
 
 +
* 2021-07-10
 +
[[File:SED_PWL_2021-07-10_DMorcuende.png|500px]]
  
−
* 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
  
−
* 2021-07-12:
+
[[File:Residuals_Excess_energy.png|600px]]
  
−
* Stacked
 
  
  
−
[[Commissioning | Back to the Commissioning page]]
+
[[Data analysis | Back to the Data analysis page]]

Latest revision as of 12:17, 19 November 2021

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
    • 2021-07-10 (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
    • 2021-07-15 (TBC h)
      • ZD: 14 - 21 deg
      • Transmission9km: > 80 %
      • Runs: 5273 - 5276


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]

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

Theta2 BLLac 2021-07-09 DMorcuende.png

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

Theta2 BLLac 2021-07-10 DMorcuende.png

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

Theta2 BLLac 2021-07-12 DMorcuende.png

Date: 2021-07-15[edit]

500px

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

Theta2 BLLac Stacked DMorcuende.png

Spectral analysis[edit]

Effective area

Aeff BLLac.png


Migration Matrix and exposure

Migration matrix exposure BLLac 2021-09-10.png


  • 2021-07-10

SED PWL 2021-07-10 DMorcuende.png

  • 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

Residuals Excess energy.png


Back to the Data analysis page

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