ASTROSAT CZTI

Data Quality Report

Orbit 52520

Creation date: 2025-06-13T23:24:41.552764
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_011T06_9000006478_52520cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52520cztM0_level2_quad_clean.evt
Size (bytes)1,895,342,400249,670,080
Size1.8 GB 238.1 MB
Events in quadrant A13,247,7631,678,805
Events in quadrant B11,208,3671,863,871
Events in quadrant C23,009,3421,253,769
Events in quadrant D21,218,5391,442,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0529522
B0463792
C0815794
D0764442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1914211275.887577%
B191424232.209800%
C19142486025.389197%
D19142221111.550517%

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 20006 19143 998 998 4.99% 5.21%
B 20006 19143 224 224 1.12% 1.17%
C 20006 19143 4635 4635 23.17% 24.21%
D 20006 19143 2315 2315 11.57% 12.09%

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 5 243 1521388 3079.81 1979 1928 493.4
A 3 45 1325230 2682.21 1979 1928 493.4
A 12 80 796051 1609.62 1979 1928 493.4
B 4 171 782306 1883.68 1973 1906 414.3
B 4 21 660108 1588.72 1973 1906 414.3
B 10 44 493119 1185.66 1973 1906 414.3
C 15 224 9862603 20768.85 1729 1712 474.8
C 2 12 1461100 3073.74 1729 1712 474.8
C 13 3 1298159 2730.56 1729 1712 474.8
D 6 42 2765617 5163.62 1880 1799 535.2
D 8 176 2182745 4074.65 1880 1799 535.2
D 7 126 2040872 3809.59 1880 1799 535.2

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