ASTROSAT CZTI

Data Quality Report

Orbit 54694

Creation date: 2025-11-11T15:18:22.331645
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/AS1A14_066T07_9000006522_54694cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54694cztM0_level2_quad_clean.evt
Size (bytes)731,638,080103,345,920
Size697.7 MB 98.6 MB
Events in quadrant A4,990,939731,298
Events in quadrant B5,111,011757,586
Events in quadrant C3,970,226700,053
Events in quadrant D12,412,787403,854

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203191
B0205441
C0176393
D0421741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77112343.034626%
B77114846.276748%
C77101041.348898%
D7710324742.114137%

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 7711 7711 100 100 1.30% 1.30%
B 7711 7711 191 191 2.48% 2.48%
C 7710 7710 64 64 0.83% 0.83%
D 7710 7710 2965 2965 38.46% 38.46%

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 7 190 1342019 6338.87 853 829 211.6
A 3 14 148891 699.79 853 829 211.6
A 4 3 61709 287.74 853 829 211.6
B 2 249 1314433 7255.62 839 809 181.0
B 7 0 139462 765.83 839 809 181.0
B 0 213 129034 708.23 839 809 181.0
C 13 3 269745 1161.75 836 830 231.5
C 14 254 92676 396.79 836 830 231.5
C 15 158 88935 380.62 836 830 231.5
D 11 129 8536280 45415.29 655 626 187.9
D 2 172 519989 2763.35 655 626 187.9
D 15 94 224614 1191.76 655 626 187.9

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