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Stefan Scepovic savours his first goal for Celtic after netting the opener against Astra Giurgiu of Romania

Celtic laboured to victory against an Astra side who will feel they might have left Glasgow with at least a point.

The Romanians created more chances than the hosts but failed to break through.

They were made to suffer when Celtic finally found the net as Stefan Scepovic headed his first goal for the club before Stefan Johansen lashed high into the net.

Gabriel Enache quickly reduced the deficit but Celtic held out.

The Scottish champions have picked up seven points from three Europa League Group D games and sit top of the pile, with a trip to Romania up next for Ronny Deila's side in two weeks.

Stefan Scepovic rises to nod his first goal for Celtic and give his side a crucial lead against Astra Giurgiu

The manager will be keen to accentuate that positive aspect but the supporters will attest to the fact they once again witnessed a below-par Celtic performance.

Just as they had at times looked second-best here in the win over Dinamo Zagreb, they allowed Astra to dictate too often and but for good goalkeeping again by Craig Gordon and some wayward finishing, they would have been behind.

These were opponents with only one win in their last eight games, a run of form that had brought about a change of manager in the past fortnight.

That sequence includes a 5-1 thumping by Dinamo Zagreb in their opening fixture in Group D, followed by a 2-1 home loss to Salzburg.

They had, though, beaten Olympique Lyon on away goals in the qualifiers and after a turgid opening 20 minutes, during which Celtic dominated possession but failed to threaten the visitors' goal, Astra began to look more like that calibre of team.

Indeed, they had four clear-cut opportunities within 10 minutes as Gordon saved well from a powerful drive by Siedu Yahaya and a close-range Constantin Budescu effort, while Takayuki Seto and Enache both shot narrowly wide.

Celtic created little in the first half but Scepovic missed two glaring openings after the break before Astra again caused a handful of scares around Gordon's goal.

Norwegian midfielder Stefan Johansen buries the second goal for Celtic after a goalkeeper error

But Serbian striker Scepovic, looking increasingly forlorn, eased the tension as he rose to head an Anthony Stokes free-kick into the net.

And within moments, Johansen gave the home fans further cause to celebrate and relax as he capitalised on a fumble by the Astra keeper to hammer home.

It seemed Celtic were desperate to make life difficult for themselves though and so it was as Enache nipped in at the near post to clip the ball over the hitherto unbeatable Gordon.

But there were to be no late moments of anxiety for those in green and white, who will nonetheless know they will not often get away with such a display.