GRB 201221C: Swift observation summary

Mission:	Swift
GRB RA:	278.205°
GRB Dec:	+34.411°
GRB Err:	3.0 arcmin
T0:	2020-12-21 18:41:33 UT
Galactic:	62.81° +18.50°
Galactic N_H:	4.92× 10²⁰ cm^-2
Galactic E(B-V):	0.06033482

Sun distance:	58.32°
Sun angle:	0.52 [hr] (East of Sun)
Moon distance:	86.68°
Visibility of this field.

Data analysed so far:

ObsID: 01014012000 with 0.4 ks exposure.
ObsID: 01014012001 with 0.9 ks exposure.
ObsID: 01014012002 with 1.5 ks exposure.
ObsID: 01014012003 with 2.0 ks exposure.

About ToO analysis.

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Sources found so far

So far 4 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift pos	Exposure
1 [details]	18h 32m 42.62s278.17759°	+34° 24′ 39.4″34.41093°	4.9′′	Poor	1.4′	4.7 ks
Mean XRT rate: 2.25 (+1.01, -0.80) ×10^-3 ct s^-1 Peak XRT rate: 2.25 (+1.01, -0.80) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.27 (+1.02, -0.80) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.27 (+1.02, -0.80) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.09 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=18.50°
2 [details]	18h 33m 10.78s278.29493°	+34° 37′ 07.8″34.61885°	6.7′′	Good	13.2′	569 s
Mean XRT rate: 1.2 (+0.7, -0.5) ×10^-2 ct s^-1 Peak XRT rate: 1.2 (+0.7, -0.5) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 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=18.50°
3 [details]	18h 32m 41.21s278.17172°	+34° 16′ 40.4″34.27788°	4.9′′	Reasonable	8.2′	4.7 ks
Mean XRT rate: 2.0 (+1.0, -0.7) ×10^-3 ct s^-1 Peak XRT rate: 2.0 (+1.0, -0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.8 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=18.50°
4 [details]	18h 33m 23.85s278.34937°	+34° 24′ 02.8″34.40078°	5.0′′	Good	7.2′	4.7 ks
Mean XRT rate: 4.6 (+2.1, -1.7) ×10^-3 ct s^-1 Peak XRT rate: 4.6 (+2.1, -1.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 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=18.50°

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.

Image

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FITS image.

Exposure map

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FITS exposure map.