ASTROSAT CZTI

Data Quality Report

Orbit 51890

Creation date: 2025-05-02T12:54:52.435726
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/AS1C09_011T05_9000006466_51890cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51890cztM0_level2_quad_clean.evt
Size (bytes)801,336,96082,275,840
Size764.2 MB 78.5 MB
Events in quadrant A5,860,930603,909
Events in quadrant B6,944,412545,527
Events in quadrant C3,763,287604,831
Events in quadrant D12,593,550284,971

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219432
B0251192
C0156722
D0418923

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64723275.052534%
B6473135520.933107%
C64731041.606674%
D6472377358.297281%

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 7017 6474 182 182 2.59% 2.81%
B 7018 6475 935 935 13.32% 14.44%
C 7018 6475 60 60 0.85% 0.93%
D 7017 6474 3183 3183 45.36% 49.17%

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 12 3 1932701 11500.37 665 648 168.0
A 12 194 228133 1354.08 665 648 168.0
A 5 240 148264 878.67 665 648 168.0
B 4 170 3170036 24578.08 610 591 129.0
B 10 254 381442 2953.38 610 591 129.0
B 4 171 370888 2871.54 610 591 129.0
C 13 3 298824 1644.6 653 648 181.3
C 15 248 170514 936.9 653 648 181.3
C 10 22 122079 669.76 653 648 181.3
D 11 129 7715424 58193.54 464 448 132.6
D 12 17 1050954 7923.9 464 448 132.6
D 8 176 582516 4390.5 464 448 132.6

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