No 11772, Monday 08 Aug 2016, Scintillator

ACROSS
1   Point to binary digits close to ten (4,2) ZERO IN {0} {1}{teN}
4   Sweeper covers that mostly dirty cleaning area (8) BATHROOM {THAt}* in {BROOM}
9   Not admitted in hospital, I consumed drug for sleep (6) OPIATE {OP}{I}{ATE}
10 Lift ring to propose, courting playfully (8) FLIRTING*
12 Pull a fast one on exposed sting (8) OUTSMART {OUT}{SMART}
13 Manager interrupts — “It's a terrible brand!” (6) STIGMA {GM} in {ITS+A}*
15 Story thread (4) YARN [DD]
16 A garden set with a TV? That's unconventional (5-5) AVANT-GARDE {A+GARDEN+A+TV}*
19 Dangerous criminals — their leader's sins will involve inciting riots (10) TERRORISTS {Their}{ERR{RIOTS*}S}
20 Return blows to create dispute ... (4) SPAR <=
23 ... and to invade war-torn country (6) RWANDA {AND} in {WAR}*

25 Divine being lured to abdicate rule, lost respect (8) DEVALUED {DEVA}{LUrED}
27 Grant credentials to IT cadre to code using C (8) ACCREDIT {IT+CADRE+C}*
28 Dome built by Paul and co. (6) CUPOLA {PAUL+CO}*
29 Nation to put in order a representative system (8) NOTATION*
30 Take apart European immigrant (6) PARSEE {PARSE}{E}

DOWN
1   Friends of X scoring zeros record study (7) ZOOLOGY {OO}{LOG} in {Z}{Y}
2   Terrier so bubbly — he's a party animal (9) ROISTERER*
3   Point, I mean, to some extent be punctual (2,4) IN TIME [T]
5   'Yavarum ...' : primarily everyone is a kinsman (4) ALLY {ALL}{Ya...m} As per the clue this should be YALL
6   Man quits retreat for ancestral property (8) HERITAGE HERmITAGE
7   Bending when bishop leaves is due (5) OWING bOWING
8   Businessman's money connected with father (7) MAGNATE {M}{AGNATE}
11 Lag behind while overcoming partial tax and excessive labour (7) TRAVAIL {VAt} in {TRAIL}
14 A throne remodelled as a different one (7) ANOTHER*
17 In great delight, let out (a) purr (s) (9) RAPTUROUS* Out on double duty
18 Timidity not just to stand on ice (4,4) COLD FEET [C&DD] 
19 They're regularly getting showers in this region (7) TERRAIN {ThEyRe}{RAIN}
21 Reportedly studied video showing government formalities (3,4) RED TAPE (~read){RED} {TAPE}
22 Light not attenuated at first when circumventing a copper cavity (6) LACUNA {Li..t}{A}{CU}{Not}{At...d}
24 Lucky charm heading out for racecourse (5) ASCOT mASCOT
26 Bengali dollies circling open pool (4) LIDO [T]

GRID