ASTROSAT CZTI

Data Quality Report

Orbit 01007

Creation date: 2024-06-27T14:06:03.643890
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/AS1P01_998T02_9000000190_01007cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01007cztM0_level2_quad_clean.evt
Size (bytes)2,003,307,840213,289,920
Size1.9 GB 203.4 MB
Events in quadrant A15,039,2161,404,762
Events in quadrant B15,986,3771,422,339
Events in quadrant C15,163,4311,384,263
Events in quadrant D13,634,1451,363,516

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537593
B0565403
C0541103
D0496623

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12811210.163922%
B12811500.390290%
C12811130.101475%
D12812190.148298%

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 14586 12814 342 342 2.34% 2.67%
B 14586 12814 477 477 3.27% 3.72%
C 14586 12814 350 350 2.40% 2.73%
D 14587 12815 232 232 1.59% 1.81%

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 13 164 39432 37.88 3901 3927 937.4
A 15 233 26289 23.85 3901 3927 937.4
A 12 189 16674 13.6 3901 3927 937.4
B 15 22 115450 115.11 4092 4110 967.2
B 7 221 108621 108.05 4092 4110 967.2
B 5 249 60876 58.69 4092 4110 967.2
C 15 241 639978 619.82 3684 3809 1026.4
C 3 111 53231 48.15 3684 3809 1026.4
C 3 79 46924 42.01 3684 3809 1026.4
D 1 4 232697 208.32 3538 3656 1099.5
D 2 107 51816 43.8 3538 3656 1099.5
D 13 13 42199 35.06 3538 3656 1099.5

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