ASTROSAT CZTI

Data Quality Report

Orbit 20331

Creation date: 2024-06-27T18:13:59.127820
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_174T01_9000003008_20331cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20331cztM0_level2_quad_clean.evt
Size (bytes)481,746,24086,431,680
Size459.4 MB 82.4 MB
Events in quadrant A3,515,537540,916
Events in quadrant B3,871,939547,961
Events in quadrant C3,333,596525,832
Events in quadrant D3,398,651520,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150172
B0159202
C0142292
D0147602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69181131.633420%
B69193164.567134%
C6919981.416390%
D6919861.242954%

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 8628 6919 23 23 0.27% 0.33%
B 8629 6920 159 159 1.84% 2.30%
C 8629 6920 0 0 0.00% 0.00%
D 8629 6921 27 27 0.31% 0.39%

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 5 16 215427 1243.9 851 834 172.5
A 15 191 18412 101.89 851 834 172.5
A 13 254 10021 53.25 851 834 172.5
B 4 142 464236 2881.41 833 813 160.8
B 7 220 56115 343.85 833 813 160.8
B 0 197 23705 142.34 833 813 160.8
C 14 238 126733 653.17 820 825 192.8
C 13 61 5721 25.4 820 825 192.8
C 1 16 5013 21.72 820 825 192.8
D 9 1 66049 320.63 832 808 203.5
D 2 120 64869 314.83 832 808 203.5
D 1 52 40354 194.35 832 808 203.5

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