ASTROSAT CZTI

Data Quality Report

Orbit 22146

Creation date: 2024-06-27T18:37:25.194515
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/AS1T03_145T01_9000003278_22146cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22146cztM0_level2_quad_clean.evt
Size (bytes)486,155,52073,900,800
Size463.6 MB 70.5 MB
Events in quadrant A3,445,107453,051
Events in quadrant B3,524,944462,653
Events in quadrant C3,625,226444,878
Events in quadrant D3,700,078436,934

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140952
B0143602
C0149662
D0151072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6307841.331853%
B63071141.807515%
C63071692.679562%
D6307861.363564%

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 7622 6308 0 0 0.00% 0.00%
B 7622 6308 0 0 0.00% 0.00%
C 7622 6308 3 3 0.04% 0.05%
D 7622 6308 17 17 0.22% 0.27%

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 13 254 10831 56.41 893 880 176.4
A 0 226 7535 37.73 893 880 176.4
A 3 137 6973 34.54 893 880 176.4
B 3 64 32404 193.56 887 868 162.9
B 12 111 18952 111.0 887 868 162.9
B 11 111 17196 100.22 887 868 162.9
C 14 238 139967 708.27 860 871 196.4
C 3 9 78484 395.2 860 871 196.4
C 10 22 52086 260.79 860 871 196.4
D 1 52 252508 1206.01 872 849 208.7
D 7 223 110700 526.43 872 849 208.7
D 2 234 28268 131.4 872 849 208.7

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