ASTROSAT CZTI

Data Quality Report

Orbit 20220207_A05_108T02_9000004914_level2

Creation date: 2025-12-31T22:12:14.988487
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_108T02_9000004914cztM0_level2.fits modeM0/AS1A05_108T02_9000004914cztM0_level2_quad_clean.evt
Size (bytes)650,200,320604,969,920
Size620.1 MB 576.9 MB
Events in quadrant A4,088,2343,662,016
Events in quadrant B3,824,8543,587,512
Events in quadrant C3,946,1343,461,088
Events in quadrant D3,281,9263,061,299

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013540
B013540
C013540
D013540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01377450
B01626510
C01544080
D02153830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A663342090.315072%
B6633422333.366298%
C663348291.249736%
D6633440626.123557%

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 92626 66332 0 0 0.00% 0.00%
B 92626 66291 0 0 0.00% 0.00%
C 92626 66333 0 0 0.00% 0.00%
D 92626 66293 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 9 19 3271 8.66 1067 1004 261.8
A 0 29 3247 8.57 1067 1004 261.8
A 7 110 3246 8.56 1067 1004 261.8
B 2 9 3267 11.69 1013 970 196.5
B 3 80 2879 9.71 1013 970 196.5
B 2 8 2713 8.87 1013 970 196.5
C 1 81 3237 8.5 1043 984 265.1
C 1 80 3108 8.01 1043 984 265.1
C 3 203 3053 7.8 1043 984 265.1
D 7 3 2431 6.35 942 862 247.2
D 4 160 2392 6.19 942 862 247.2
D 6 231 2374 6.12 942 862 247.2

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