Assessing the impact of two independent direction-dependent calibration algorithms on the LOFAR 21 cm signal power spectrum - And applications to an observation of a field flanking the north celestial pole

Open Access

Table 5

Main differences between the DD calibrations used in this work and in the standard LOFAR-EoR pipeline.

Parameter	NCP	RA 18h flanking field
Number of components	~28 000	3389^(*)
Number of clusters	122	20^(*)
Baselines	50–250λ
Solution time interval	2.5–20 min^(**)	10 min
Solution frequency interval	per sub-band (195.3 kHz)

Notes. ^(*)Without Cas A and Cyg A. ^(**)Gain solution time interval varies, depending on the cluster in the NCP analysis.

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