ASTROSAT CZTI

Data Quality Report

Orbit 58321

Creation date: 2026-07-09T07:11:08.552284
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_044T03_9000006588_58321cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58321cztM0_level2_quad_clean.evt
Size (bytes)400,207,680100,080,000
Size381.7 MB 95.4 MB
Events in quadrant A3,293,438647,805
Events in quadrant B4,198,224685,033
Events in quadrant C3,228,437632,189
Events in quadrant D3,564,359590,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146632
B0171002
C0146852
D0153922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6811640.939656%
B68112683.934811%
C6811470.690060%
D6811350.513875%

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 7871 6812 22 22 0.28% 0.32%
B 7871 6812 152 152 1.93% 2.23%
C 7871 6812 26 26 0.33% 0.38%
D 7871 6812 27 27 0.34% 0.40%

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 13 248 118391 641.12 733 715 183.5
A 4 238 85916 464.19 733 715 183.5
A 3 14 52523 282.26 733 715 183.5
B 5 185 358377 2318.4 721 695 154.3
B 2 249 251935 1628.47 721 695 154.3
B 4 171 134360 866.38 721 695 154.3
C 9 38 152943 767.74 718 713 198.3
C 6 223 100353 502.52 718 713 198.3
C 7 2 35903 177.47 718 713 198.3
D 11 129 310510 1523.77 711 679 203.3
D 2 62 125404 613.4 711 679 203.3
D 12 110 97927 478.27 711 679 203.3

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