ASTROSAT CZTI

Data Quality Report

Orbit 50773

Creation date: 2025-02-17T08:23:42.780183
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/AS1C07_001T01_9000006450_50773cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50773cztM0_level2_quad_clean.evt
Size (bytes)760,703,040103,985,280
Size725.5 MB 99.2 MB
Events in quadrant A5,720,562689,521
Events in quadrant B4,278,015774,718
Events in quadrant C7,380,394615,381
Events in quadrant D10,189,582537,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225296
B0183880
C0271360
D0356850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76294095.361122%
B76321151.506813%
C7632109614.360587%
D7632162321.265723%

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 7631 7630 225 225 2.95% 2.95%
B 7632 7632 53 53 0.69% 0.69%
C 7632 7632 753 753 9.87% 9.87%
D 7632 7632 1239 1239 16.23% 16.23%

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 80 1159876 5961.74 788 771 194.4
A 3 46 232509 1191.92 788 771 194.4
A 14 254 148200 758.29 788 771 194.4
B 4 206 395067 2314.85 806 778 170.3
B 0 229 111780 651.69 806 778 170.3
B 8 128 95725 557.43 806 778 170.3
C 4 5 1593141 7657.48 751 746 208.0
C 9 38 706307 3392.89 751 746 208.0
C 5 10 473819 2274.91 751 746 208.0
D 8 242 2449466 12142.5 724 699 201.7
D 2 216 1196408 5929.07 724 699 201.7
D 8 241 726082 3596.9 724 699 201.7

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