GRB 201128B: Swift observation summary

Mission:	Swift/BAT
GRB RA:	339.354°
GRB Dec:	-49.246°
GRB Err:	7.0 arcmin
T0:	2020-11-28 17:54:11 UT
Galactic:	343.16° -56.09°
Galactic N_H:	1.11× 10²⁰ cm^-2
Galactic E(B-V):	0.01267988

Sun distance:	76.55°
Sun angle:	6.28 [hr] (East of Sun)
Moon distance:	87.45°
Visibility of this field.

Data analysed so far:

ObsID: 00021044001 with 3.0 ks exposure.
ObsID: 00021044002 with 2.0 ks exposure.

About ToO analysis.

Find an upper limit.

Sources found so far

So far 11 sources have been found in the XRT data. 2 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT pos	Exposure	Notes
1 [details]	22h 37m 39.94s339.41642°	-49° 16′ 11.1″-49.26976°	5.1′′	Poor	2.8′	12.2 ks	Matches SIMBAD source: LEDA 478680, 4.5″ away.
Mean XRT rate: 4.2 (±0.7) ×10^-3 ct s^-1 Peak XRT rate: 4.3 (±1.1) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.64 (±0.28) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.7 (±0.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.2 [What is this?]
2 [details]	22h 36m 05.99s339.02496°	-49° 07′ 54.7″-49.13185°	5.2′′	Good	14.6′	4.0 ks
Mean XRT rate: 4.1 (+1.6, -1.2) ×10^-3 ct s^-1 Peak XRT rate: 4.1 (+1.6, -1.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.8 [What is this?]
3 [details]	22h 36m 24.49s339.10203°	-49° 19′ 47.1″-49.32975°	3.7′′	Good	11.1′	10.6 ks	Matches known X-ray source: 1RXS J223623.1-491947 (from ROSAT/RASSFSC), 15.192103247106″ away.
Mean XRT rate: 6.9 (±1.1) ×10^-3 ct s^-1 Peak XRT rate: 8.0 (±1.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.85 (±0.30) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.1 (±0.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.3 [What is this?]
4 [details]	22h 38m 15.55s339.56478°	-49° 12′ 50.9″-49.21415°	7.7′′	Reasonable	8.5′	12.2 ks
Mean XRT rate: 1.3 (+0.5, -0.4) ×10^-3 ct s^-1 Peak XRT rate: 1.3 (+0.5, -0.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.1 (+2.3, -1.8) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 6.1 (+2.3, -1.8) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.5 [What is this?]
5 [details]	22h 37m 42.42s339.42675°	-49° 07′ 02.2″-49.11728°	5.3′′	Good	8.2′	12.2 ks
Mean XRT rate: 9 (+4, -3) ×10^-4 ct s^-1 Peak XRT rate: 9 (+4, -3) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
6 [details]	22h 37m 09.59s339.28995°	-49° 23′ 04.4″-49.38455°	3.5′′	Good	8.7′	10.7 ks
Mean XRT rate: 5.3 (±0.9) ×10^-3 ct s^-1 Peak XRT rate: 5.4 (±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: 1.47 (±0.26) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.5 (±0.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.3 [What is this?]
7 [details]	22h 37m 06.43s339.27679°	-49° 08′ 21.0″-49.13917°	4.9′′	Good	7.1′	12.2 ks	This source may be affected by extended emission
Mean XRT rate: 3.7 (±0.7) ×10^-3 ct s^-1 Peak XRT rate: 4.6 (±1.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.24 (±0.23) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.5 (±0.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.3 [What is this?]
8 [details]	22h 37m 09.31s339.28880°	-49° 11′ 45.9″-49.19608°	7.2′′	Good	3.9′	12.2 ks
Mean XRT rate: 1.6 (±0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.6 (±0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.2 (±0.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.2 (±0.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.7 [What is this?]
9 [details]	22h 37m 05.92s339.27468°	-49° 07′ 19.5″-49.12209°	9.8′′	Poor	8.1′	12.2 ks	This source may be affected by extended emission
Mean XRT rate: 3.2 (±0.7) ×10^-3 ct s^-1 Peak XRT rate: 3.6 (±1.0) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 9.3 (+2.1, -1.9) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 1.06 (±0.29) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.5 [What is this?]
10 [details]	22h 38m 04.51s339.51880°	-49° 10′ 48.4″-49.18011°	6.9′′	Reasonable	7.6′	12.2 ks
Mean XRT rate: 1.1 (+0.5, -0.4) ×10^-3 ct s^-1 Peak XRT rate: 1.1 (+0.5, -0.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
11 [details]	22h 38m 01.04s339.50434°	-49° 18′ 30.2″-49.30840°	5.2′′	Good	7.0′	12.2 ks
Mean XRT rate: 2.2 (+0.7, -0.6) ×10^-3 ct s^-1 Peak XRT rate: 2.2 (+0.7, -0.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.4 (+2.0, -1.6) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 6.4 (+2.0, -1.6) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.5 [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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FITS exposure map.