ASTROSAT CZTI

Data Quality Report

Orbit 08230

Creation date: 2024-06-27T15:29:43.074190
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/AS1C02_041T01_9000001136_08230cztM0_level2.evt modeM0/AS1C02_041T01_9000001136_08230cztM0_level2_quad_clean.evt
Size (bytes)588,928,32083,030,400
Size561.6 MB 79.2 MB
Events in quadrant A4,038,439483,221
Events in quadrant B4,258,166487,640
Events in quadrant C3,821,839481,421
Events in quadrant D5,135,986466,708

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184451
B0185591
C0172911
D0214961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8569620.723538%
B8569640.746878%
C8569240.280079%
D85692552.975843%

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 9164 8570 18 18 0.20% 0.21%
B 9164 8570 17 17 0.19% 0.20%
C 9164 8570 0 0 0.00% 0.00%
D 9164 8570 249 249 2.72% 2.91%

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 15 79 215320 1082.85 960 938 198.0
A 5 16 106972 535.58 960 938 198.0
A 6 16 14285 67.42 960 938 198.0
B 10 16 167963 887.7 970 944 188.1
B 0 214 118593 625.3 970 944 188.1
B 4 48 79862 419.45 970 944 188.1
C 9 68 126327 575.76 933 936 217.8
C 1 16 38702 173.41 933 936 217.8
C 8 128 10265 42.84 933 936 217.8
D 1 52 1063035 4666.64 924 896 227.6
D 2 14 413391 1812.35 924 896 227.6
D 12 233 125841 548.96 924 896 227.6

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