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Table 3
Source parameters in the catalog.
| Column | Parameter | Description |
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| 1 | NAME | Source name: prefix 1SWXRT, following the standard IAU convention |
| 2 | TARGET NAME | XRT field name |
| 3 | RA | Swift-XRT Right Ascension in hms in the J2000 coordinate system |
| 4 | DEC | Swift-XRT Declination in hms in the J2000 coordinate system |
| 5 | SEQUENCE | Swift-XRT observation number |
| 6 | START DATE | Start time of the field observations in year-month-day h:m:s |
| 7 | END DATE | End time of the field observations in year-month-day h:m:s |
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| 8 | F_RATE | 0.3–10 keV count rate or 90% upper limit in counts/sec |
| 9 | F_RATE_ERR | 1σ 0.3–10 keV count rate error in counts/sec, in case of upper limits is set to − 99 |
| 10 | F_FLUX | 0.5–10 keV Flux or 90% in erg cm-2s-1 |
| 11 | F_FLUX_ERR | 1σ 0.5–10 keV Flux error in erg cm-2s-1, in case of upper limits is set to − 99 |
| 12 | F_PROB | 0.3–10 keV detection probability |
| 13 | F_SNR | 0.3–10 keV S/N |
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| 14 | S_RATE | 0.3–3 keV count rate or 90% upper limit in counts/sec |
| 15 | S_RATE_ERR | 1σ 0.3–3 keV count rate error counts/sec, in case of upper limits is set to − 99 |
| 16 | S_FLUX | 0.5–2 keV Flux or 90% upper limit in erg cm-2s-1 |
| 17 | S_FLUX_ERR | 1σ 0.5–2 keV Flux error in erg cm-2s-1, in case of upper limits is set to − 99 |
| 18 | S_PROB | 0.3–13 keV detection probability |
| 19 | S_SNR | 0.3–3 keV S/N |
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| 20 | H_RATE | 2–10 keV count rate or 90% upper limit in counts/sec |
| 21 | H_RATE_ERR | 1σ 2–10 keV count rate in counts/sec, in case of upper limits is set to − 99 |
| 22 | H_FLUX | 2–10 keV Flux or 90% upper limit in erg cm-2s-1 |
| 23 | H_FLUX_ERR | 1σ 2–10 keV Flux error in erg cm-2s-1, in case of upper limits is set to − 99 |
| 24 | H_PROB | 2–10 keV detection probability |
| 25 | H_SNR | 2–10 keV S/N |
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| 26 | EXPOSURE | Total on-time in s |
| 27 | HR | Hardness ratio = (h_rate-s_rate)/ (h_rate+ s_rate) (set to 99 if soft or hard counts are missing) |
| 28 | HR_ERR | 1σ hardness ratio error evaluated with the error propagation formula (see e.g. Bevington & Robinson 1992) |
| 29 | POS_ERR | Positional error at 68% confidence level in arcsec |
| 30 | N H | Galactic hydrogen column density in cm-2 |
| 31 | BETA | Energy spectral index (set to 99 if soft or hard counts are missing) |
| 32 | BETA_ERR | Energy spectral index error |
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