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Table 3.
Statistics of photometric redshift performance for the released KiDS DR3 catalogue, as obtained from a comparison with overlapping spectroscopic redshifts.
| photo-z bin | Method | Mean of δz = zph − zsp | Mean of δz/(1 + zsp) | St.dev. of δz/(1 + zsp) | SMAD of δz/(1 + zsp) |
|---|---|---|---|---|---|
| 0.0 < zphot ≤ 0.1 | ANNz2 | 3.0 × 10−3 | 6.2 × 10−3 | 0.045 | 0.025 |
| BPZ | −7.8 × 10−2 | −4.4 × 10−2 | 0.109 | 0.040 | |
| 0.1 < zphot ≤ 0.2 | ANNz2 | 1.7 × 10−3 | 3.9 × 10−3 | 0.044 | 0.034 |
| BPZ | −2.9 × 10−3 | 6.7 × 10−3 | 0.069 | 0.032 | |
| 0.2 < zphot ≤ 0.3 | ANNz2 | −1.0 × 10− | −5.1 × 10−3 | 0.048 | 0.035 |
| BPZ | 3.5 × 10−3 | 5.6 × 10−3 | 0.044 | 0.028 | |
| 0.3 < zphot ≤ 0.4 | ANNz2 | −1.7 × 10−2 | −8.3 × 10−3 | 0.055 | 0.032 |
| BPZ | 1.0 × 10−2 | 1.0 × 10−2 | 0.043 | 0.028 | |
| 0.4 < zphot ≤ 0.5 | ANNz2 | −2.0 × 10−2 | −5.8 × 10−3 | 0.079 | 0.032 |
| BPZ | 4.5 × 10−2 | 3.4 × 10−2 | 0.044 | 0.035 | |
| 0.5 < zphot ≤ 0.6 | ANNz2 | −5.0 × 10−3 | 3.0 × 10−3 | 0.074 | 0.026 |
| BPZ | 2.6 × 10−2 | 2.0 × 10−2 | 0.054 | 0.028 | |
| 0.6 < zphot ≤ 0.7 | ANNz2 | 2.2 × 10−3 | 9.3 × 10−3 | 0.088 | 0.032 |
| BPZ | 6.4 × 10−3 | 1.1 × 10−2 | 0.081 | 0.040 | |
| 0.7 < zphot ≤ 0.8 | ANNz2 | −9.2 × 10−3 | 9.0 × 10−3 | 0.123 | 0.057 |
| BPZ | −2.9 × 10−2 | −1.1 × 10−3 | 0.118 | 0.057 | |
| 0.8 < zphot ≤ 0.9 | ANNz2 | −1.1 × 10−2 | 1.4 × 10−2 | 0.146 | 0.079 |
| BPZ | −1.5 × 10−1 | −3.4 × 10−2 | 0.183 | 0.084 | |
| 0.9 < zphot ≤ 1.0 | ANNz2 | 2.7 × 10−3 | 3.8 × 10−2 | 0.197 | 0.082 |
| BPZ | −4.8 × 10−1 | −1.4 × 10−1 | 0.239 | 0.256 |
Notes. Results are presented per bin of ANNz2 and BPZ photo-zs, respectively.
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