GRB 221206B: Swift observation summary

Mission:	Swift/BAT-GUANO
GRB RA:	251.155°
GRB Dec:	+42.671°
GRB Err:	2.0 arcmin
T0:	2022-12-06 12:22:47 UT
Galactic:	67.25° +40.76°
Galactic N_H:	1.13× 10²⁰ cm^-2
Galactic E(B-V):	0.0138473

Sun distance:	65.17°
Sun angle:	0.11 [hr](West of Sun)
Moon distance:	114.88°
Visibility of this field.

Data analysed so far:

ObsID: 00021532001 with 4.8 ks exposure.

About ToO analysis.

Find an upper limit.

Sources found so far

So far 7 sources have been found in the XRT data. 5 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT-GUANO pos	Exposure	Notes
1 [details]	16h 44m 16.28s251.06784°	+42° 32′ 04.7″42.53463°	6.3′′	Good	9.0′	4.8 ks	Matches SIMBAD source: 2MASX J16441684+4231585, 7.9″ away.
Mean XRT rate: 5.3 (+1.6, -1.3) ×10^-3 ct s^-1 Peak XRT rate: 5.3 (+1.6, -1.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.6 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.6 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	16h 44m 59.48s251.24784°	+42° 36′ 05.0″42.60139°	8.3′′	Good	5.9′	4.8 ks	Matches SIMBAD source: SDSS J164459.48+423601.6, 3.3″ away.
Mean XRT rate: 2.54 (+1.10, -0.87) ×10^-3 ct s^-1 Peak XRT rate: 2.54 (+1.10, -0.87) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.0 (+1.7, -1.4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 4.0 (+1.7, -1.4) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
3 [details]	16h 43m 41.63s250.92346°	+42° 37′ 08.2″42.61893°	6.6′′	Reasonable	10.7′	4.8 ks
Mean XRT rate: 1.59 (+1.04, -0.74) ×10^-3 ct s^-1 Peak XRT rate: 1.59 (+1.04, -0.74) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
4 [details]	16h 44m 25.58s251.10658°	+42° 46′ 11.0″42.76971°	7.5′′	Good	6.3′	4.8 ks	Matches known X-ray source: 1RXS J164425.0+424553 (from ROSAT/RASSFSC), 18.589119843326″ away. Matches SIMBAD source: [VV2006] J164425.7+424605, 5.4″ away.
Mean XRT rate: 1.7 (+0.9, -0.7) ×10^-3 ct s^-1 Peak XRT rate: 1.7 (+0.9, -0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.1 (+3.2, -2.4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 6.1 (+3.2, -2.4) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
5 [details]	16h 44m 50.66s251.21108°	+42° 37′ 05.6″42.61823°	6.6′′	Poor	4.0′	4.8 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
6 [details]	16h 44m 44.81s251.18672°	+42° 33′ 09.4″42.55262°	5.7′′	Good	7.2′	4.8 ks	Matches known X-ray source: 1RXS J164444.9+423325 (from ROSAT/RASSFSC), 15.607452217957″ away. Matches SIMBAD source: 1RXS J164444.9+423325, 5″ away.
Mean XRT rate: 3.04 (+1.23, -0.99) ×10^-3 ct s^-1 Peak XRT rate: 3.04 (+1.23, -0.99) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.2 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.2 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
7 [details]	16h 44m 55.05s251.22938°	+42° 48′ 12.0″42.80333°	7.2′′	Good	8.6′	4.8 ks	Matches SIMBAD source: SDSS J164455.22+424814.3, 3″ away.
Mean XRT rate: 1.6 (+0.9, -0.7) ×10^-3 ct s^-1 Peak XRT rate: 1.6 (+0.9, -0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.5 (+1.5, -1.1) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 2.5 (+1.5, -1.1) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the 1SXPS documentation.
^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

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Exposure map

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FITS exposure map.