ASTROSAT CZTI

Data Quality Report

Orbit 09471

Creation date: 2024-06-27T15:46:34.891559
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/AS1A03_051T01_9000001346_09471cztM0_level2.evt modeM0/AS1A03_051T01_9000001346_09471cztM0_level2_quad_clean.evt
Size (bytes)548,231,04093,199,680
Size522.8 MB 88.9 MB
Events in quadrant A4,678,051578,816
Events in quadrant B3,560,203584,266
Events in quadrant C3,364,336573,389
Events in quadrant D4,488,904561,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019198339
B016066259
C015863241
D018913290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75241912.538543%
B75381241.644999%
C7544570.755567%
D75411431.896300%

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 7921 7646 27 27 0.34% 0.35%
B 7921 7646 1 1 0.01% 0.01%
C 7921 7646 3 3 0.04% 0.04%
D 7921 7654 77 77 0.97% 1.01%

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 8 5 1145862 6278.11 880 860 182.4
A 1 162 83695 454.19 880 860 182.4
A 1 178 20994 110.4 880 860 182.4
B 0 214 33365 188.36 887 865 172.5
B 0 219 31292 176.35 887 865 172.5
B 4 173 19377 107.29 887 865 172.5
C 14 234 34420 168.3 853 856 199.4
C 13 61 6403 27.81 853 856 199.4
C 8 222 3314 12.33 853 856 199.4
D 8 195 785288 3469.04 847 822 226.1
D 13 104 277066 1221.59 847 822 226.1
D 7 71 75921 332.1 847 822 226.1

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