/ ciao4.16 / dictionary / qeu.html
Please read CXC Director Dr. Pat Slane's A Letter to the Community regarding NASA's plans to decommission Chandra.
QEU: Quantum Efficiency Uniformity
In the Chandra Calibration Database (CALDB), the quantum efficiency of the detectors is divided into:
- the quantum efficiency (QE) file: a mean curve (vs. energy)
- the QEU file: a map of the deviations across the face of the detector
/ ciao4.16 / dictionary / qeu.html