Rishi: Prājāpatya/anonymous (catechism style; later tradition may ascribe to ritual seers)
Devata: Yajña (as a totality) / Prajāpati (as its hidden unity)
Chandas: Triṣṭubh (by cadence and length; common for interrogative-catechism hymns)
Samhita Patha (Devanagari)कत्य॑स्य वि॒ष्ठाः कत्य॒क्षरा॑णि॒ कति॒ होमा॑सः कति॒धा समि॑द्धः । य॒ज्ञस्य॑ त्वा वि॒दथा॑ पृच्छ॒मत्र॒ कति॒ होता॑र ऋतु॒शो य॑जन्ति
Transliterationkaty asya viṣṭhā́ḥ katy ákṣarāṇi katí homā́saḥ katidhā́ samíd-dhaḥ | yajñásya tvā vidáthā pṛcchā́m atra katí hotā́ra ṛtuśó yajanti
Translationতাৰ কিমান ‘বিষ্ঠা’ (অৱস্থান/পদ)? কিমান ‘অক্ষৰ’ (অক্ষৰসমূহ)? কিমান ‘হোম’ (আহুতি)? কিমান প্ৰকাৰৰে সি সমিধা-দ্বাৰা প্ৰজ্বলিত হয়? যজ্ঞৰ ‘বিদথ’ (বিধি/অনুষ্ঠান-নিয়ম) বিষয়ে মই ইয়াত তোমাক সুধিছোঁ—ঋতুক্ৰমে কিমান হোতা (Hotṛ) যজন কৰে?
Padapatha (Word Analysis)कति । अस्य । विष्ठाः । कति । अक्षराणि । कति । होमासः । कति-धा । समिद्धः । यज्ञस्य । त्वा । विदथा । पृच्छामि । अत्र । कति । होतारः । ऋतु-शः । यजन्ति
Word by Wordकत्यस्यof how many / of what number विष्ठाः(are) how many ‘vिष्ठāḥ’ (stations/steps/portions) अक्षराणिsyllables/imperishable units होमासःoblations / acts of offering धाin what way / in how many ways समिद्धःkindled / well-lit विदथाrites / ceremonial sessions होतारःHotṛ-priests / invokers ऋतुशःin due seasonal order यजन्तिthey worship / they perform sacrifice 
Entities MentionedH
Hotṛ (ṛtvij as function) Viniyoga (Ritual Application)