Table 1
Available data products.
| Data product | Format | Dimensions(a) | Size per beam | Size per observation |
|---|---|---|---|---|
| Level zero data products | ||||
| Survey field raw visibility data | MS | 4 × 24576 | 117 GB | 4.7 TB |
| Calibrator raw visibility data | MS | 4 × 24576 | 1.6–2.6 GB(b) | 64-104 GB(b) |
| Level one data products | ||||
| Calibration tables | MS table | – | 660 MB | 26.3GB |
| Self-calibrated visibility data | uvfits | 4 × 12288 | 58 GB | 2.3 TB (c) |
| Level two data products Continuum | ||||
| Multi-frequency synthesis beam images Polarization | fits | 3073 × 3073 | 37 MB | 1.5 GB |
| Stokes Q and U cubes | fits | 2049 × 2049 × 24 | 1.5 GB | 62 GB |
| Stokes V multi-frequency synthesis image Line | fits | 3073 × 3073 | 37 MB | 1.5 GB |
| Continuum-subtracted, dirty line cubes | fits | 661 × 661 × 1218 | 8 GB (d) | 320 GB (d) |
| Restoring beam cubes | fits | 661 × 1321 × 1218 | 320 GB (d,e) | 640 GB (d,e) |
Notes. (a)For level zero and one data: number of polarizations and channels. For level two data: image/cube sizes. (b)Data sizes are after pruning, to only keep the Apertif beam that contains that calibrator, and the range of values is for different calibrator scan lengths. (c)Maximum size; files can be smaller depending on flagging within pipeline. (d)Total size for four line beam−1 cubes produced.(e) After symmetric reduction.
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