Editing M87 LST1Paper Mireia Analysis

General information
Name of the source: M87
Brief description of the source:
Object type : AGN / Radiogal
Redshift (z) : 0.00428 (16.1 +/- 1.2 Mpc)
TeVCat entry: http://tevcat.uchicago.edu/?mode=1&showsrc=80
Simbad: https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=m87

RA: 12 30 49.42338230 (hh mm ss) , Dec: +12 23 28.0438581 (dd mm ss)
RA, Dec in deg (ICRS): 187.70593075958334, 12.391123293916666

Analysis by Mireia Nievas (mnievas[at]iac[dot]es)

=== Data selection ===

Using [[ https ://github.com/cta-observatory/cta-lstchain/blob/master/notebooks/data_selection.ipynb | Abelardo's datacheck-based data selection notebook ]]

==== Main selection cuts ====

* ''' Wobble offset range ''': [0.3 - 0.5]. Skipped 1 run at Wobble ~ 0. Results in 60 runs (14.36h). 
* ''' AZ, Zenith distance cut: ''' zd ] [0 - 50]: no runs skipped. Will use 20deg MC for ZD<30 and 40deg MC for ZD>30.
[[File:M87_LST1AGN_Runs_MeanZD_MeanAZ.png|500px]]
* Skip dates with '''missing flatfield tables''': 20200618, 20200622, 20200624, 20200716, 20200820, 20210303
* Skip runs with '''missing pedestal events''': 1810 1812 4738 7134 7135 7217 7229 7230
* Skip runs with '''Moon above horizon''' by setting a ped.charge.std.dev < 2 cut
[[File:M87_LST1AGN_Runs_PedChargeStdDev.png|500px]]
* '''Cosmic rate cut''': use an outlier-resistant filter method based on percentiles (submitted PR to the notebook)
[[File:M87_LST1AGN_Runs_CosmicRateCut.png|500px]]
* Remove data with '''high rate spikes''' in BOTH pulses>10 p.e. and pulses>30p.e. (3 runs wiped, high humidity of ~90% + lidar, although lidar transmission is >0.9)
[[File:M87_LST1AGN_Runs_MeanZD_spikes10.png|500px]]
[[File:M87_LST1AGN_Runs_MeanZD_spikes30.png|500px]]
* A couple of runs with '''lower interleaved flatfield/pedestal rate''', but I don't put a filter yet.
[[File:M87_LST1AGN_Runs_MeanZD_IntPedFlatRate.png|500px]]
* Average '''muon ring intensity''' looks stable.
[[File:M87_LST1AGN_Runs_AverageMuonintensity.png|500px]]
* Average '''muon ring width''' looks stable.
[[File:M87_LST1AGN_Runs_AverageMuonwidth.png|500px]]

==== Surviving runs and exposure: ====
'''34 wobble runs (8.47h).'''

* 26 runs at low ZD (zd<30deg):

<pre>
1 : 2021-02-17 : [3738, 3739, 3741, 3742, 3743, 3744]
2 : 2021-04-17 : [4460, 4461, 4462, 4463, 4464, 4465]
3 : 2021-05-04 : [4594, 4595]
4 : 2021-05-07 : [4636, 4637]
5 : 2021-06-09 : [4986]
6 : 2022-03-01 : [7185]
7 : 2022-03-07 : [7330, 7331, 7332, 7333, 7334, 7335]
8 : 2022-03-23 : [7441, 7444]
</pre>

* 8 runs at mid ZD (30deg < zd < 50deg)

<pre>
1 : 2021-02-17 : [3745, 3746, 3747, 3748]
2 : 2021-04-19 : [4495]
3 : 2022-03-01 : [7186, 7187, 7188]
</pre>