ASTROSAT CZTI

Data Quality Report

Orbit 55567

Creation date: 2026-01-05T11:46:12.554074
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_021T06_9000006538_55567cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55567cztM0_level2_quad_clean.evt
Size (bytes)641,456,64094,340,160
Size611.7 MB 90.0 MB
Events in quadrant A4,550,468637,448
Events in quadrant B3,122,173710,157
Events in quadrant C11,163,612430,040
Events in quadrant D4,353,228580,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187380
B0149080
C0381300
D0181990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71533314.627429%
B7154220.307520%
C7154257535.993850%
D71542253.145094%

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 7153 7153 340 340 4.75% 4.75%
B 7154 7154 15 15 0.21% 0.21%
C 7154 7154 2736 2736 38.24% 38.24%
D 7154 7154 244 244 3.41% 3.41%

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 4 159 830221 4626.4 722 703 179.3
A 0 8 503475 2804.07 722 703 179.3
A 8 9 251365 1397.99 722 703 179.3
B 7 252 75284 480.43 725 697 155.3
B 4 169 63431 404.08 725 697 155.3
B 4 206 41689 264.04 725 697 155.3
C 9 38 6112412 36465.84 616 613 167.6
C 15 148 1221147 7282.27 616 613 167.6
C 13 3 914612 5453.34 616 613 167.6
D 5 222 323477 1625.51 704 674 198.6
D 8 129 289591 1454.88 704 674 198.6
D 2 120 199228 999.84 704 674 198.6

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