ASTROSAT CZTI

Data Quality Report

Orbit 20082

Creation date: 2024-06-27T18:11:03.900831
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_180T01_9000002992_20082cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20082cztM0_level2_quad_clean.evt
Size (bytes)525,778,56017,104,320
Size501.4 MB 16.3 MB
Events in quadrant A3,574,1508,440
Events in quadrant B3,640,0248,339
Events in quadrant C3,485,7618,355
Events in quadrant D4,750,6878,183

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104
B0105
C083
D0115

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167811631
B0169311633
C0163361599
D0212622304

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01597
B016319
C016620
D015911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69461512.173913%
B69471922.763783%
C69372042.940752%
D68831842.673253%

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 8287 7632 25 25 0.30% 0.33%
B 8287 7638 19 19 0.23% 0.25%
C 8287 7630 0 0 0.00% 0.00%
D 8287 7653 16 16 0.19% 0.21%

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 14 238 154330 858.6 877 862 178.7
A 4 2 28189 152.88 877 862 178.7
A 11 29 10312 52.87 877 862 178.7
B 4 80 65906 389.12 871 851 167.2
B 0 183 52857 311.07 871 851 167.2
B 0 189 30290 176.08 871 851 167.2
C 14 238 132831 658.29 845 853 200.5
C 4 254 54555 267.86 845 853 200.5
C 3 233 6771 29.52 845 853 200.5
D 1 52 1430858 6878.19 844 820 207.9
D 7 238 71407 339.51 844 820 207.9
D 12 218 34240 160.74 844 820 207.9

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