ASTROSAT CZTI

Data Quality Report

Orbit 52532

Creation date: 2025-06-14T19:05:32.147887
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_52532cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52532cztM0_level2_quad_clean.evt
Size (bytes)700,980,48094,631,040
Size668.5 MB 90.2 MB
Events in quadrant A3,733,897656,655
Events in quadrant B6,548,929631,227
Events in quadrant C4,539,560613,522
Events in quadrant D10,577,846471,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161720
B0242150
C0186440
D0363913

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70721341.894796%
B7073107115.142090%
C70732493.520430%
D7072183225.904977%

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 7072 7072 114 114 1.61% 1.61%
B 7073 7073 696 696 9.84% 9.84%
C 7073 7073 228 228 3.22% 3.22%
D 7072 7072 1767 1767 24.99% 24.99%

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 8 249 338507 1832.29 740 722 184.4
A 5 243 122079 658.29 740 722 184.4
A 5 240 82579 444.03 740 722 184.4
B 12 32 3019482 20505.35 687 665 147.2
B 10 254 238030 1612.3 687 665 147.2
B 4 21 223788 1515.57 687 665 147.2
C 2 12 378589 1925.0 707 700 196.3
C 4 5 337893 1717.69 707 700 196.3
C 7 80 249259 1266.18 707 700 196.3
D 6 42 2118569 11755.8 636 609 180.2
D 8 176 1193771 6622.68 636 609 180.2
D 7 126 1143847 6345.58 636 609 180.2

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