ASTROSAT CZTI

Data Quality Report

Orbit 20161101_G06_028T01_9000000768_level2

Creation date: 2025-11-07T13:32:28.918692
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/AS1G06_028T01_9000000768cztM0_level2.fits modeM0/AS1G06_028T01_9000000768cztM0_level2_quad_clean.evt
Size (bytes)335,295,360297,691,200
Size319.8 MB 283.9 MB
Events in quadrant A2,025,0681,719,393
Events in quadrant B1,960,3841,716,578
Events in quadrant C2,001,8881,650,522
Events in quadrant D1,665,1801,427,657

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760930
B0808650
C0743000
D01097330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07500
B07460
C07480
D07480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363823380.929031%
B363854961.363199%
C364311350.370564%
D3632827757.638736%

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 44083 36703 0 0 0.00% 0.00%
B 44083 36719 0 0 0.00% 0.00%
C 44083 36773 0 0 0.00% 0.00%
D 44083 36711 0 0 0.00% 0.00%

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 14 188 2090 11.96 524 490 133.8
A 0 29 2000 11.29 524 490 133.8
A 14 204 1854 10.19 524 490 133.8
B 2 9 1744 11.85 516 491 105.8
B 12 226 1431 8.89 516 491 105.8
B 14 254 1372 8.33 516 491 105.8
C 12 241 1468 6.85 529 489 143.0
C 9 188 1355 6.06 529 489 143.0
C 9 242 1330 5.88 529 489 143.0
D 11 82 1268 6.45 474 430 130.0
D 10 189 1245 6.27 474 430 130.0
D 6 231 1242 6.25 474 430 130.0

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