ASTROSAT CZTI

Data Quality Report

Orbit 46579

Creation date: 2024-06-27T23:25:00.776182
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_001T10_9000006232_46579cztM0_level2.fits modeM0/AS1C07_001T10_9000006232_46579cztM0_level2_quad_clean.evt
Size (bytes)671,532,480105,166,080
Size640.4 MB 100.3 MB
Events in quadrant A6,266,367724,551
Events in quadrant B3,207,307754,881
Events in quadrant C3,126,389741,444
Events in quadrant D11,713,738473,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228711
B0146801
C0147091
D0396764

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70252503.558719%
B70261942.761173%
C70261021.451751%
D7025254236.185053%

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 7540 7026 1 1 0.01% 0.01%
B 7541 7026 21 21 0.28% 0.30%
C 7541 7026 19 19 0.25% 0.27%
D 7540 7025 2448 2448 32.47% 34.85%

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 10 83 3281385 20979.86 756 740 156.4
A 2 79 12800 77.12 756 740 156.4
A 13 254 11976 71.85 756 740 156.4
B 3 112 45741 302.24 758 733 148.9
B 0 189 34412 226.16 758 733 148.9
B 5 32 30751 201.58 758 733 148.9
C 14 254 114785 654.37 750 754 174.3
C 0 207 58824 333.24 750 754 174.3
C 3 233 10478 55.8 750 754 174.3
D 13 138 7286267 43330.09 667 645 168.1
D 1 52 661675 3931.37 667 645 168.1
D 12 233 307493 1824.93 667 645 168.1

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