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Quality flags describe the quality and origin of data.
The Flags available in Delft-FEWS are a based on a combination of two components: the origin and the quality of the data.
- Origin of the data: Original / Completed / Corrected
- Quality of the data: Reliable / Doubtful / Unreliable
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Enumeration of quality flags
This leads to the The following quality flags available in are known to Delft-FEWS.Table 1
Enumeration |
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Enumeration | Description |
0 | Original/Reliable |
1 | Corrected/Reliable |
2 | Completed/Reliable |
3 | Original/Doubtful |
4 | Corrected/Doubtful |
5 | Completed/Doubtful |
6 | Original/Unreliable |
7 | Corrected/Unreliable |
8 | Completed/Unreliable |
9 | Missing |
10 | Deleted |
11, 12, 13 | Not used |
14 | Accumulation Reset |
FlagSource
| Anchor | ||||
|---|---|---|---|---|
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Next to the flag it is also possible to get or set information why the flag is as it is through the so-called flagSource.
Delft-FEWS stores not only the quality flags, but also the source of the flag, the so-called flagSource (Since version flagSource (since 2012.01).
The user is able to see why a certain value is validated as unreliable, eg. due to exceeding of the hard max .Table 1 List of Flag Sourcesvalidation rule.
| flagSource | Description |
|---|---|
CA | Conditional aggregation |
FC | secondary validation, flag comparison |
HN | hard min |
| HX | hard max |
| IMP | flag is imported |
| MAN | manual edit |
| MK | secondary validation, Mann-Kendall test |
| OSC | oscillation |
| ROF | rate of fall |
| ROR | rate of rise |
| SC | secondary validation, series comparison |
| SFP | start flag persistency |
| SN | soft min |
| SR | same reading |
| SVP | secondary validation, Flag persistency (FlagPersistencyCheck) |
| SX | soft max |
| TS | temporary shift |
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