Datasets of QCD jets used for studying unfolding in "Towards Universal Unfolding using Denoising Diffusion Probabilistic Models" consist of two different detector simulation frameworks: Data-driven detector smearing: Events were generated using PYTHIA 8.3 for proton-proton collisions at √s = 14 TeV Several physics processes were simulated: ttbar production with various PDFs (CT14lo, NNPDF23, CTEQ6L1) Z+jets (Z → μμ) with CT14lo, NNPDF23, CTEQ6L1 W+jets (W → μν) with CT14lo, NNPDF23, CTEQ6L1 Dijet production Leptoquark production Jets with radius parameter R = 0.4 were reconstructed using the anti-kT algorithm at particle-level ("gen_jets"), and then detector effects were applied ("reco_jets") Detector effects were simulated using ATLAS 8 TeV calibration data-derived jet resolution functions for pT, η, and φ Phase space bias was applied to some samples to enhance high-pT statistics: (pT_hat/pT_ref)^a with pT_ref = 100 GeV and a = 5 DELPHES CMS detector simulation: Events were generated using PYTHIA 8.3 for proton-proton collisions at √s = 14 TeV Physics processes included: ttbar production with CTEQ6L1 Z+jets (Z → μμ) with CTEQ6L1 W+jets (W → μν) with CTEQ6L1 Dijet production with CTEQ6L1 Leptoquark production with CTEQ6L1 Events were passed through DELPHES 3.4.2 fast detector simulation using the CMS detector configuration Jets with radius parameter R = 0.4 were reconstructed using the anti-kT algorithm at both particle level ("gen_jets") and detector level ("reco_jets") Phase space bias was applied to some samples using (pT_hat/pT_ref)^a with pT_ref = 100 GeV and a = 5 For both frameworks, each dataset consists of several arrays containing jet kinematic information (pT, η, φ, E, px, py, pz) at both truth ("gen_jets") and detector ("reco_jets") level. Additional features such as event identifiers ("event_num") are included to enable reconstruction of event-level observables.