| Suffix | Stands for | Description |
| _An | A beam Negative | Extracted negative A-beam source and region from chopped and nodded mosaic |
| _Ap | A beam Positive | Extracted positive A-beam source and region from chopped and nodded mosaic |
| _Bn | B beam Negative | Extracted negative B-beam source and region from chopped and nodded mosaic |
| _Bp | B beam Positive | Extracted Positive B-beam source and region from chopped and nodded mosaic |
| _cab | Combined A & B beams | Combined positive and negative images extracted from chopped and nodded mosaic |
| _cpc | Column-Profile Corrected | Removed column pattern, likely arising from pickup |
| _fb | Filled Bad pixels | Bad pixels in the mosaic are filled using smooth function of the neighbouring good pixels |
| _I | Intensity | Polarisation intensity |
| _mos | Mosaic | Final mosaic |
| _P | Percentage | Percentage polarisation |
| _PI | Polarisation Intensity | |
| _Q | Stokes Q | Stokes Q parameter |
| _qcab | Quality Combining A & B beams | Quality map from combining positive and negative images extracted from chopped and nodded mosaic |
| _rpc | Row-Profile Corrected | Removed row pattern, say due to bias variations |
| _scab | Smoothed Combined A & B beams | Block-smoothed combined positive and negative images extracted from chopped and nodded mosaic |
| _sp | Stokes Parameters | Data cube of Stokes parameters |
| _TH | THeta | Polarisation angle |
| _U | Stokes U | Stokes U parameter |
| _w | Wavelength | Fabry-Perot mosaic from different wavelengths |
| _xpr | X PRofile | Median of each row of the mosaic |
| _ypr | Y PRofile | Median of each column of the mosaic |
ORAC-DR -- imaging data reduction