This is a GATE-simulated data using a cylindrical PET scanner (based on the GATE cylindrical PET example) and a NEMA-like phantom. Included are the sinograms created by OMEGA software, for both TOF and non-TOF cases as mat-files as well as normalization correction coefficients. You can open these mat-files in MATLAB, Octave, Python, Julia or in practically any other language. This data can be also used as a testing data for OMEGA. Included is also the ground truth image (i.e. the source image), attenuation image as created by GATE, as well as the original ROOT files. The ROOT file package also contains the original macros that give details on the scanner and the phantom. The sinogram data contains several different sinograms. raw_SinM is the raw sinogram with no modifications, SinM contains normalization and randoms correction precorrected (not available for TOF data), SinDelayed contains delayed coincidences, SinTrues the trues, SinRandoms the true randoms, SinScatter the true scattered photons, appliedCorrections show the corrections applied to SinM and RandProp and ScatterProp show whether variance reduction or smoothing was applied to the delayed coincidences or (not present) scatter estimation data. The attenuation data is already correctly scaled and is saved as a MetaImage file. Also included is the ground truth, or original source, image. This is saved as the variable C. RA is the randoms image while SC is the scatter image. The latter two are in singles mode, i.e. they show the locations of the photons that either were random (two different events) or scattered along the way. The normalization data works for other measurements with the same scanner as long as the sinogram dimensions remain the same. OMEGA will automatically use the normalization data if it's present in the mat-files folder. This new version includes also the detector coordinates for each measurement. This is mainly for OMEGA-example showcasing the use of custom data. See, for example, https://github.com/villekf/OMEGA/blob/master/main-files/custom_detector_exampleSimple.m