ASTROSAT CZTI

Data Quality Report

Orbit 02830

Creation date: 2024-06-27T14:22:11.298793
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/AS1P01_999T99_9000000410_02830cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02830cztM0_level2_quad_clean.evt
Size (bytes)1,364,316,48056,139,840
Size1.3 GB 53.5 MB
Events in quadrant A7,111,061385,819
Events in quadrant B9,950,099382,867
Events in quadrant C12,969,134258,442
Events in quadrant D10,966,757325,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246281
B0329920
C0424660
D0362530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4925751.522843%
B49253988.081218%
C4925286258.111675%
D4925153731.208122%

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 4925 4925 408 408 8.28% 8.28%
B 4925 4925 2315 2315 47.01% 47.01%
C 4925 4925 3494 3494 70.94% 70.94%
D 4925 4925 2685 2685 54.52% 54.52%

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 0 13 159175 383.71 1756 1737 410.3
A 0 31 80110 191.01 1756 1737 410.3
A 0 128 47139 110.65 1756 1737 410.3
B 0 219 1030866 2453.87 1771 1755 419.4
B 2 250 405585 962.92 1771 1755 419.4
B 3 10 312218 740.29 1771 1755 419.4
C 0 64 6395803 18818.18 1155 1196 339.8
C 0 219 718158 2109.89 1155 1196 339.8
C 1 16 500951 1470.69 1155 1196 339.8
D 0 226 2991010 6767.9 1465 1487 441.7
D 1 66 1810821 4096.1 1465 1487 441.7
D 1 83 167358 375.51 1465 1487 441.7

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
Veto Counter