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Table 7.
Binary warning flags used in the QSOC redshift selection procedure and reported in the hflags_qsoc field.
| Warning flag | Bit | Value | Condition(s) for rising |
|---|---|---|---|
| Z_AMBIGUOUS | 1 | 1 | The CCF has more than one maximum with  , meaning that at least two redshifts lead to a similar χ2 and the solution is ambiguous. |
| Z_LOWCHI2R | 2 | 2 |  |
| Z_LOWZSCORE | 3 | 4 | Zscore(k) < 0.9 |
| Z_NOTOPTIMAL | 4 | 8 | The selected solution did not correspond to the global maximum (i.e.  ) |
| Z_BADSPEC | 5 | 16 | The BP/RP spectra upon which this prediction is based are considered as unreliable. An unreliable spectrum has a number of spectral transits in BP, Nbp or RP, Nrp that is lower than or equal to ten transits or G ≥ 20.5 mag or G ≥ 19 + 0.03 × (Nbp − 10) mag or G ≥ 19 + 0.03 × (Nrp − 10) mag (see the online documentation for more information on the derivation of these limits). |
Notes. Sources with flags_qsoc = 0 encountered no issues during their processing and are based on reliable spectra which means that they are more likely to contain reliable predictions.
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