Journal Article serial crystallography X-ray diffraction robust statistics Bragg peak finding SFX X-ray fluorescence X-ray free-electron lasers X-ray glitches X-ray optics X-ray speckle tracking XFELs XPCS aerosols aperture background scattering bad-pixel masks coherent diffractive imaging computer programs continuous diffraction data processing data reduction diffraction losses diffuse scattering disordered crystals incoherent diffraction imaging machine learning materials science monochromator calibration multi-layer Laue lenses