ASTROSAT CZTI

Data Quality Report

Orbit 16349

Creation date: 2024-06-27T17:21:24.132315
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_069T02_9000002414_16349cztM0_level2.evt modeM0/AS1A05_069T02_9000002414_16349cztM0_level2_quad_clean.evt
Size (bytes)915,073,920160,732,800
Size872.7 MB 153.3 MB
Events in quadrant A7,019,5641,017,805
Events in quadrant B6,508,0831,030,542
Events in quadrant C6,218,650993,589
Events in quadrant D7,119,792960,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293815
B0274244
C0265414
D0298214

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125105564.444444%
B125101921.534772%
C125102171.734612%
D125103042.430056%

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 13626 12513 307 307 2.25% 2.45%
B 13626 12513 47 47 0.34% 0.38%
C 13626 12514 41 41 0.30% 0.33%
D 13626 12514 172 172 1.26% 1.37%

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 15 174 1420368 4862.25 1454 1419 291.8
A 0 226 12808 39.03 1454 1419 291.8
A 12 194 10663 31.68 1454 1419 291.8
B 0 189 225372 785.28 1485 1442 285.2
B 15 35 129163 447.89 1485 1442 285.2
B 10 16 80348 276.71 1485 1442 285.2
C 0 207 255742 759.88 1432 1440 334.7
C 14 238 217947 646.94 1432 1440 334.7
C 3 233 146329 432.94 1432 1440 334.7
D 12 218 796443 2253.94 1443 1403 352.7
D 1 52 592294 1675.18 1443 1403 352.7
D 13 104 84366 235.2 1443 1403 352.7

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