GRB 210204A: Swift observation summary

Mission:	Fermi/GBM
GRB RA:	117.081°
GRB Dec:	+11.410°
GRB Err:	6 arcsec
T0:	2021-02-04 06:29:25 UT
Galactic:	208.94° +17.73°
Galactic N_H:	3.13× 10²⁰ cm^-2
Galactic E(B-V):	0.03161218

Sun distance:	159.04°
Sun angle:	10.6 [hr](East of Sun)
Moon distance:	103.02°
Visibility of this field.

Data analysed so far:

ObsID: 00014055001 with 2.9 ks exposure.

Source 8 has been manually confirmed as the GRB afterglow; data for this object are now available through the main GRB results area for this GRB.

About ToO analysis.

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Sources found so far

So far 9 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Fermi/GBM pos	Exposure
1 [details]	07h 48m 17.51s117.07294°	+11° 20′ 16.5″11.33792°	4.3′′	Good	4.4′	2.9 ks
Mean XRT rate: 5.2 (±1.9) ×10^-3 ct s^-1 Peak XRT rate: 5.2 (±1.9) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.16 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.4 (±0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.4 (±0.5) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.06 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°
2 [details]	07h 48m 29.43s117.12264°	+11° 14′ 24.0″11.23999°	4.6′′	Good	10.5′	870 s
Mean XRT rate: 1.7 (+2.9, -1.4) ×10^-3 ct s^-1 Peak XRT rate: 1.7 (+2.9, -1.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.11 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°
3 [details]	07h 48m 13.67s117.05694°	+11° 15′ 06.7″11.25185°	4.6′′	Poor	9.6′	2.9 ks
Mean XRT rate: 1.3 (±0.3) ×10^-2 ct s^-1 Peak XRT rate: 1.3 (±0.3) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.14 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.08 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°
4 [details]	07h 47m 37.97s116.90819°	+11° 21′ 43.1″11.36197°	5.0′′	Good	10.6′	2.9 ks
Mean XRT rate: 1.1 (±0.3) ×10^-2 ct s^-1 Peak XRT rate: 1.1 (±0.3) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.14 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.6 (±0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.6 (±0.5) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.1 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°
5 [details]	07h 47m 51.79s116.96577°	+11° 31′ 31.7″11.52547°	4.6′′	Poor	9.7′	2.9 ks
Mean XRT rate: 1.27 (+1.24, -0.90) ×10^-3 ct s^-1 Peak XRT rate: 1.27 (+1.24, -0.90) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.12 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°
6 [details]	07h 47m 58.30s116.99293°	+11° 19′ 50.2″11.33061°	5.2′′	Poor	7.0′	2.9 ks
Mean XRT rate: 2.0 (+1.8, -1.4) ×10^-3 ct s^-1 Peak XRT rate: 2.0 (+1.8, -1.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.10 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°
7 [details]	07h 47m 20.31s116.83464°	+11° 24′ 54.0″11.41499°	5.6′′	Poor	14.5′	1.2 ks
Mean XRT rate: 9 (+4, -3) ×10^-3 ct s^-1 Peak XRT rate: 9 (+4, -3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.12 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.2 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°
8 [details]	07h 48m 19.37s117.08071°	+11° 24′ 34.2″11.40951°	1.7′′	Good	2.0′′	2.9 ks
Mean XRT rate: 9.6 (±0.7) ×10^-2 ct s^-1 Peak XRT rate: 0.129 (±0.029) ct s^-1 RASS PSPC 3-σ upper limit: 0.18 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.71 (±0.26) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 5.0 (±1.1) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~3.81×10^-7 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°
9 [details]	07h 47m 50.33s116.95972°	+11° 24′ 09.9″11.40275°	4.1′′	Poor	7.1′	2.9 ks
Mean XRT rate: 3.1 (+2.1, -1.6) ×10^-3 ct s^-1 Peak XRT rate: 3.1 (+2.1, -1.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.09 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Enhanced position \| Expected serendipitous sources: ~0.3 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=17.73°

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.