ASTROSAT CZTI

Data Quality Report

Orbit 18485

Creation date: 2024-06-27T17:50:27.134224
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/AS1A05_075T09_9000002740_18485cztM0_level2.evt modeM0/AS1A05_075T09_9000002740_18485cztM0_level2_quad_clean.evt
Size (bytes)496,016,640103,976,640
Size473.0 MB 99.2 MB
Events in quadrant A3,433,088677,254
Events in quadrant B3,970,015703,115
Events in quadrant C4,085,290673,471
Events in quadrant D3,106,179655,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142702
B0157762
C0163402
D0134572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62981362.159416%
B62981872.969197%
C62981181.873611%
D6298190.301683%

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 7538 6299 30 30 0.40% 0.48%
B 7538 6298 85 85 1.13% 1.35%
C 7538 6299 0 0 0.00% 0.00%
D 7538 6299 6 6 0.08% 0.10%

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 15 174 324120 2033.98 795 782 159.0
A 0 13 35813 220.36 795 782 159.0
A 4 2 15931 95.3 795 782 159.0
B 10 245 703823 4632.43 802 781 151.8
B 4 216 70511 459.46 802 781 151.8
B 0 244 38871 250.98 802 781 151.8
C 3 233 937452 5220.78 777 782 179.4
C 14 238 120148 665.32 777 782 179.4
C 13 61 5400 25.74 777 782 179.4
D 7 238 111448 578.57 781 759 191.3
D 2 234 27106 137.72 781 759 191.3
D 13 232 11290 55.05 781 759 191.3

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