ASTROSAT CZTI

Data Quality Report

Orbit 17146

Creation date: 2024-06-27T17:32:40.261083
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_194T03_9000002544_17146cztM0_level2.evt modeM0/AS1A05_194T03_9000002544_17146cztM0_level2_quad_clean.evt
Size (bytes)951,975,360159,307,200
Size907.9 MB 151.9 MB
Events in quadrant A5,302,8411,036,491
Events in quadrant B6,590,6151,040,261
Events in quadrant C10,232,960962,315
Events in quadrant D5,926,092988,551

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235452
B0269222
C0386972
D0253792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11523950.824438%
B115232141.857155%
C115237476.482687%
D115231711.483989%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 12963 11524 3 3 0.02% 0.03%
B 12963 11524 89 89 0.69% 0.77%
C 12963 11524 261 261 2.01% 2.26%
D 12963 11524 115 115 0.89% 1.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 96 50161 177.13 1358 1327 275.7
A 12 189 31641 109.95 1358 1327 275.7
A 0 226 12169 39.33 1358 1327 275.7
B 0 189 699536 2685.18 1351 1315 260.0
B 7 220 296270 1134.32 1351 1315 260.0
B 0 219 100867 382.85 1351 1315 260.0
C 3 233 4753184 15985.79 1277 1286 297.3
C 4 254 250620 838.78 1277 1286 297.3
C 14 238 194014 648.35 1277 1286 297.3
D 1 52 421021 1303.75 1324 1285 321.9
D 15 0 170874 526.76 1324 1285 321.9
D 10 70 104107 319.38 1324 1285 321.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter