Athena-Aware Ntuples are now produced in release 12 standard production. The fast simulation information is
stored in a separate ntuple called 'FastTree' (instead of the usual CollectionTree). In principle, this should
allow the user to run the same analysis on fast and full simulation output.
The variables you might expect to see are given below. Variables that are declared in the ntuple but not
filled from fast simulation have been omitted.

METAod_PxMiss | missing Ex |

METAod_PyMiss | missing Ey |

METAod_SumET | Scalar sum of missing ET components |

Elenc | total number of electrons |

Elee | energy |

Eleeta | eta |

Elephi | phi |

Eleauthor | author (0 for unknown and fast simulation) |

EleKf | pdgid |

ElePx | px |

ElePy | py |

ElePz | pz |

Phonc | total number of photons |

Phoe | energy |

Phoeta | eta |

Phophi | phi |

Phoauthor | author (0 for unknown and fast simulation) |

PhoKf | PDGID |

PhoPx | px |

PhoPy | py |

PhoPz | pz |

MuonN | total number of muons |

MuonAuthor | author (0 for unknown and fast simulation) |

MuonEta | eta |

MuonPhi | phi |

MuonPt | transverse momentum |

MuonCharge | charge |

MuonKf | PDGID |

MuonPx | px |

MuonPy | py |

MuonPz | pz |

NonIsoMuonN | total number of muons |

NonIsoMuonAuthor | author (0 for unknown and fast simulation) |

NonIsoMuonEta | eta |

NonIsoMuonPhi | phi |

NonIsoMuonPt | transverse momentum |

NonIsoMuonCharge | charge |

NonIsoMuonKf | PDGID |

NonIsoMuonPx | px |

NonIsoMuonPy | py |

NonIsoMuonPz | pz |

AtlfastTauJet_N | total number of taus |

AtlfastTauJet_Author | author (0 for unknown and fast simulation) |

AtlfastTauJet_eta | eta |

AtlfastTauJet_phi | phi |

AtlfastTauJet_pt | transverse momentum |

AtlfastTauJet_m | mass |

AtlfastTauJet_et | transverse energy |

AtlfastTauJet_charge | charge |

AtlfastTauJet_pdgId | PDGID |

AtlfastTauJet1p3p_N | total number of taus |

AtlfastTauJet1p3p_Author | author (0 for unknown and fast simulation) |

AtlfastTauJet1p3p_eta | eta |

AtlfastTauJet1p3p_phi | phi |

AtlfastTauJet1p3p_pt | transverse momentum |

AtlfastTauJet1p3p_m | mass |

AtlfastTauJet1p3p_et | transverse energy |

AtlfastTauJet1p3p_charge | charge |

AtlfastTauJet1p3p_pdgId | PDGID |

nPJ | total number of jets |

pjAuthor | author (0 for unknown and fast simulation) |

pjPx | px |

pjPy | py |

pjPz | pz |

pjEne | energy |

pjEta | eta |

pjPhi | phi |

pjPt | transverse momentum |

pjWeight | this equals 100 if jet is b-tagged, -30 otherwise |

pjWlhSig | this equals 100 if jet is b-tagged, -30 otherwise |

pjUCorr | momentum correction factor if this is a light jet |

pjBTag | is jet b-tagged using SV1+IP3D algo? (1=yes,0=no) |

pjBCorr | momentum correction factor if this is a b-jet |

pjTauTag | is jet tau-tagged TauRec-style? (1=yes,0=no) |

pjTauCorr | momentum correction factor if this is a hadronic tau |

pjTau1PTag | is jet tagged as 1-prong? (tau1p3p) (1=yes,0=no) |

pjTau3PTag | is jet tagged as 3-prong? (tau1p3p) (1=yes,0=no) |

pjTau1P3PCorr | momentum correction factor if jet is tagged with tau1p3p |

pjJetBLabel | number of b-labelled jets |

pjJetCLabel | number of c-labelled jets |

pjJetTauLabel | number of tau-labelled jets |