Summary of XRT observations. The observation date column indicates the date of a single snapshot or the years during which multiple snapshots were performed. The corresponding note reports the complete set of observations integrated. The column ‘Exp’ indicates the effective exposure in ks, while NH is the Galactic absorption column in units of 1020 cm−2 from Kalberla et al. (2005). Γ is the photon index of the power-law model [F(E) ∝E−Γ], 
is the observed (absorbed) flux. The two last columns indicate the results of the statistical analysis: the last column contains the degrees of freedom, while the last but one column displays the reduced 
or the value of the likelihood (Cash 1979).
| Name | Obs. date (yyyy-mm-dd) | Exp (ks) | NH (1020 cm−2) | Γ |  (10−13 erg cm−2 s−1) |  /Cash | d.o.f. |
| 0058+3311 | 2009-08-21 | 8.7 | 4.89 | 1.1 ± 0.4 | 3.3 ± 0.5 | −/47 | 36 |
| 0521−36 | 2005–2010a | 32.4 | 3.32 | 1.61 ± 0.02 | 203 ± 2 | 1.2/– | 280 |
| 0754+100 | 2007–2010b | 20.3 | 2.21 | 1.63 ± 0.05 | 54 ± 1 | 0.95/– | 65 |
| 0808+019 | 2007–2009c | 19.6 | 3.84 | 2.2 ± 0.3 | 4.2 ± 0.3 | 0.2/– | 3 |
| 0829+046 | 2006–2010d | 27.9 | 2.41 | 1.56 ± 0.08 | 19.4 ± 0.6 | 0.65/– | 30 |
| 0954+658 | 2006–2010e | 57.6 | 5.47 | 1.89 ± 0.07f | 33.6 ± 0.5 | 1.0/– | 112 |
| 1012+0630 | 2010g | 4.8 | 1.97 | 2.0 ± 0.3 | 4.6 ± 0.6 | –/47 | 45 |
| 1026−1748 | 2010-07-24 | 0.01 | 6.42 | 2(fixed) | <30h | –/– | – |
| 1204−0710 | 2010-08-09 | 5.1 | 2.02 | 2.8 ± 0.3 | 10.0 ± 0.9 | 0.99/− | 4 |
| 1338+40 | 2008–2009i | 11.1 | 0.822 | 1.88 ± 0.04 | 89 ± 2 | 1.3/– | 65 |
| 1519−273 | 2010-01-20 | 2.2 | 9.11 | 1.4 ± 0.8 | 4.2 ± 1.2 | –/19 | 11 |
| 1807+698 | 2007–2009j | 36.3 | 4.11 | 1.84 ± 0.05 | 31.8 ± 0.6 | 0.96/– | 76 |
| 2007+77 | 2009-06-14 | 6.3 | 8.39 | 1.4 ± 0.2 | 22 ± 1 | 1.08/– | 9 |
| 2214+24B | 2010k | 8.0 | 5.75 | 1.9 ± 0.2 | 10.7 ± 0.8 | 0.67/– | 7 |
| 2240−260 | 2008–2009l | 5.5 | 1.35 | 1.9 ± 0.3 | 5.8 ± 0.8 | –/55 | 66 |
| 2340+8015 | 2009m | 10.8 | 14.2 | 2.5 ± 0.2 | 9.0 ± 0.6 | 0.76/– | 9 |
| Name | Obs. date (yyyy-mm-dd) | Exp (ks) | NH (1020 cm−2) | Γ | (10−13 erg cm−2 s−1) | /Cash | d.o.f. |
| 0058+3311 | 2009-08-21 | 8.7 | 4.89 | 1.1 ± 0.4 | 3.3 ± 0.5 | −/47 | 36 |
| 0521−36 | 2005–2010a | 32.4 | 3.32 | 1.61 ± 0.02 | 203 ± 2 | 1.2/– | 280 |
| 0754+100 | 2007–2010b | 20.3 | 2.21 | 1.63 ± 0.05 | 54 ± 1 | 0.95/– | 65 |
| 0808+019 | 2007–2009c | 19.6 | 3.84 | 2.2 ± 0.3 | 4.2 ± 0.3 | 0.2/– | 3 |
| 0829+046 | 2006–2010d | 27.9 | 2.41 | 1.56 ± 0.08 | 19.4 ± 0.6 | 0.65/– | 30 |
| 0954+658 | 2006–2010e | 57.6 | 5.47 | 1.89 ± 0.07f | 33.6 ± 0.5 | 1.0/– | 112 |
| 1012+0630 | 2010g | 4.8 | 1.97 | 2.0 ± 0.3 | 4.6 ± 0.6 | –/47 | 45 |
| 1026−1748 | 2010-07-24 | 0.01 | 6.42 | 2(fixed) | <30h | –/– | – |
| 1204−0710 | 2010-08-09 | 5.1 | 2.02 | 2.8 ± 0.3 | 10.0 ± 0.9 | 0.99/− | 4 |
| 1338+40 | 2008–2009i | 11.1 | 0.822 | 1.88 ± 0.04 | 89 ± 2 | 1.3/– | 65 |
| 1519−273 | 2010-01-20 | 2.2 | 9.11 | 1.4 ± 0.8 | 4.2 ± 1.2 | –/19 | 11 |
| 1807+698 | 2007–2009j | 36.3 | 4.11 | 1.84 ± 0.05 | 31.8 ± 0.6 | 0.96/– | 76 |
| 2007+77 | 2009-06-14 | 6.3 | 8.39 | 1.4 ± 0.2 | 22 ± 1 | 1.08/– | 9 |
| 2214+24B | 2010k | 8.0 | 5.75 | 1.9 ± 0.2 | 10.7 ± 0.8 | 0.67/– | 7 |
| 2240−260 | 2008–2009l | 5.5 | 1.35 | 1.9 ± 0.3 | 5.8 ± 0.8 | –/55 | 66 |
| 2340+8015 | 2009m | 10.8 | 14.2 | 2.5 ± 0.2 | 9.0 ± 0.6 | 0.76/– | 9 |
aData from different observations were integrated: 26-05-2005, 02-02-2008, 07-02-2008, 08-02-2008, 13-02-2008, 05-03-2010, 08-03-2010, 19-06-2010, 23-06-2010, 05-07-2010, 09-07-2010, 13-07-2010.
bData from different observations were integrated: 18-05-2007, 27-02-2010.
cData from different observations were integrated: 20-12-2007, 23-12-2007, 14-09-2008, 19-09-2009.
dData from different observations were integrated: 23-10-2006, 12-12-2007, 18-09-2009, 20-09-2009, 10-12-2009, 13-12-2009, 11-01-2010, 08-02-2010.
eData from different observations were integrated: 04-07-2006, 28-03-2007, 10-01-2008, 11-01-2008, 15-01-2008, 09-01-2009, 01-11-2009, 05-11-2009, 12-12-2009, 23-01-2010, 05-03-2010, 12-03-2010.
fBest fit with a broken-power-law model (F-test >99.99 per cent): Γ1 = 1.1 ± 0.1, Ebreak = 1.3 ± 0.1 keV, Γ2 = 1.89 ± 0.07. In the table is indicated Γ2 only.
gData from different observations were integrated: 24-05-2010 (two observations), 25-05-2010.
hUpper limit derived with PIMMS with fixed photon index equal to 2.
iData from different observations were integrated: 15-10-2008, 21-12-2009.
jData from different observations were integrated: 01-03-2007, 15-04-2007, 22-01-2009, 09-11-2009, 11-11-2009.
kData from different observations were integrated: 25-01-2010, 27-01-2010.
lData from different observations were integrated: 25-12-2008, 22-09-2009.
mData from different observations were integrated: 05-09-2009, 08-09-2009, 09-09-2009.
Summary of XRT observations. The observation date column indicates the date of a single snapshot or the years during which multiple snapshots were performed. The corresponding note reports the complete set of observations integrated. The column ‘Exp’ indicates the effective exposure in ks, while NH is the Galactic absorption column in units of 1020 cm−2 from Kalberla et al. (2005). Γ is the photon index of the power-law model [F(E) ∝E−Γ], is the observed (absorbed) flux. The two last columns indicate the results of the statistical analysis: the last column contains the degrees of freedom, while the last but one column displays the reduced or the value of the likelihood (Cash 1979).
| Name | Obs. date (yyyy-mm-dd) | Exp (ks) | NH (1020 cm−2) | Γ | (10−13 erg cm−2 s−1) | /Cash | d.o.f. |
| 0058+3311 | 2009-08-21 | 8.7 | 4.89 | 1.1 ± 0.4 | 3.3 ± 0.5 | −/47 | 36 |
| 0521−36 | 2005–2010a | 32.4 | 3.32 | 1.61 ± 0.02 | 203 ± 2 | 1.2/– | 280 |
| 0754+100 | 2007–2010b | 20.3 | 2.21 | 1.63 ± 0.05 | 54 ± 1 | 0.95/– | 65 |
| 0808+019 | 2007–2009c | 19.6 | 3.84 | 2.2 ± 0.3 | 4.2 ± 0.3 | 0.2/– | 3 |
| 0829+046 | 2006–2010d | 27.9 | 2.41 | 1.56 ± 0.08 | 19.4 ± 0.6 | 0.65/– | 30 |
| 0954+658 | 2006–2010e | 57.6 | 5.47 | 1.89 ± 0.07f | 33.6 ± 0.5 | 1.0/– | 112 |
| 1012+0630 | 2010g | 4.8 | 1.97 | 2.0 ± 0.3 | 4.6 ± 0.6 | –/47 | 45 |
| 1026−1748 | 2010-07-24 | 0.01 | 6.42 | 2(fixed) | <30h | –/– | – |
| 1204−0710 | 2010-08-09 | 5.1 | 2.02 | 2.8 ± 0.3 | 10.0 ± 0.9 | 0.99/− | 4 |
| 1338+40 | 2008–2009i | 11.1 | 0.822 | 1.88 ± 0.04 | 89 ± 2 | 1.3/– | 65 |
| 1519−273 | 2010-01-20 | 2.2 | 9.11 | 1.4 ± 0.8 | 4.2 ± 1.2 | –/19 | 11 |
| 1807+698 | 2007–2009j | 36.3 | 4.11 | 1.84 ± 0.05 | 31.8 ± 0.6 | 0.96/– | 76 |
| 2007+77 | 2009-06-14 | 6.3 | 8.39 | 1.4 ± 0.2 | 22 ± 1 | 1.08/– | 9 |
| 2214+24B | 2010k | 8.0 | 5.75 | 1.9 ± 0.2 | 10.7 ± 0.8 | 0.67/– | 7 |
| 2240−260 | 2008–2009l | 5.5 | 1.35 | 1.9 ± 0.3 | 5.8 ± 0.8 | –/55 | 66 |
| 2340+8015 | 2009m | 10.8 | 14.2 | 2.5 ± 0.2 | 9.0 ± 0.6 | 0.76/– | 9 |
| Name | Obs. date (yyyy-mm-dd) | Exp (ks) | NH (1020 cm−2) | Γ | (10−13 erg cm−2 s−1) | /Cash | d.o.f. |
| 0058+3311 | 2009-08-21 | 8.7 | 4.89 | 1.1 ± 0.4 | 3.3 ± 0.5 | −/47 | 36 |
| 0521−36 | 2005–2010a | 32.4 | 3.32 | 1.61 ± 0.02 | 203 ± 2 | 1.2/– | 280 |
| 0754+100 | 2007–2010b | 20.3 | 2.21 | 1.63 ± 0.05 | 54 ± 1 | 0.95/– | 65 |
| 0808+019 | 2007–2009c | 19.6 | 3.84 | 2.2 ± 0.3 | 4.2 ± 0.3 | 0.2/– | 3 |
| 0829+046 | 2006–2010d | 27.9 | 2.41 | 1.56 ± 0.08 | 19.4 ± 0.6 | 0.65/– | 30 |
| 0954+658 | 2006–2010e | 57.6 | 5.47 | 1.89 ± 0.07f | 33.6 ± 0.5 | 1.0/– | 112 |
| 1012+0630 | 2010g | 4.8 | 1.97 | 2.0 ± 0.3 | 4.6 ± 0.6 | –/47 | 45 |
| 1026−1748 | 2010-07-24 | 0.01 | 6.42 | 2(fixed) | <30h | –/– | – |
| 1204−0710 | 2010-08-09 | 5.1 | 2.02 | 2.8 ± 0.3 | 10.0 ± 0.9 | 0.99/− | 4 |
| 1338+40 | 2008–2009i | 11.1 | 0.822 | 1.88 ± 0.04 | 89 ± 2 | 1.3/– | 65 |
| 1519−273 | 2010-01-20 | 2.2 | 9.11 | 1.4 ± 0.8 | 4.2 ± 1.2 | –/19 | 11 |
| 1807+698 | 2007–2009j | 36.3 | 4.11 | 1.84 ± 0.05 | 31.8 ± 0.6 | 0.96/– | 76 |
| 2007+77 | 2009-06-14 | 6.3 | 8.39 | 1.4 ± 0.2 | 22 ± 1 | 1.08/– | 9 |
| 2214+24B | 2010k | 8.0 | 5.75 | 1.9 ± 0.2 | 10.7 ± 0.8 | 0.67/– | 7 |
| 2240−260 | 2008–2009l | 5.5 | 1.35 | 1.9 ± 0.3 | 5.8 ± 0.8 | –/55 | 66 |
| 2340+8015 | 2009m | 10.8 | 14.2 | 2.5 ± 0.2 | 9.0 ± 0.6 | 0.76/– | 9 |
aData from different observations were integrated: 26-05-2005, 02-02-2008, 07-02-2008, 08-02-2008, 13-02-2008, 05-03-2010, 08-03-2010, 19-06-2010, 23-06-2010, 05-07-2010, 09-07-2010, 13-07-2010.
bData from different observations were integrated: 18-05-2007, 27-02-2010.
cData from different observations were integrated: 20-12-2007, 23-12-2007, 14-09-2008, 19-09-2009.
dData from different observations were integrated: 23-10-2006, 12-12-2007, 18-09-2009, 20-09-2009, 10-12-2009, 13-12-2009, 11-01-2010, 08-02-2010.
eData from different observations were integrated: 04-07-2006, 28-03-2007, 10-01-2008, 11-01-2008, 15-01-2008, 09-01-2009, 01-11-2009, 05-11-2009, 12-12-2009, 23-01-2010, 05-03-2010, 12-03-2010.
fBest fit with a broken-power-law model (F-test >99.99 per cent): Γ1 = 1.1 ± 0.1, Ebreak = 1.3 ± 0.1 keV, Γ2 = 1.89 ± 0.07. In the table is indicated Γ2 only.
gData from different observations were integrated: 24-05-2010 (two observations), 25-05-2010.
hUpper limit derived with PIMMS with fixed photon index equal to 2.
iData from different observations were integrated: 15-10-2008, 21-12-2009.
jData from different observations were integrated: 01-03-2007, 15-04-2007, 22-01-2009, 09-11-2009, 11-11-2009.
kData from different observations were integrated: 25-01-2010, 27-01-2010.
lData from different observations were integrated: 25-12-2008, 22-09-2009.
mData from different observations were integrated: 05-09-2009, 08-09-2009, 09-09-2009.
