ASTROSAT CZTI

Data Quality Report

Orbit 20516

Creation date: 2024-06-27T18:16:19.263974
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_115T03_9000003032_20516cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20516cztM0_level2_quad_clean.evt
Size (bytes)623,067,84082,889,280
Size594.2 MB 79.0 MB
Events in quadrant A4,239,065505,150
Events in quadrant B4,189,728505,979
Events in quadrant C3,767,593486,779
Events in quadrant D6,139,767465,088

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177843
B0173522
C0162772
D0234542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78614155.279227%
B78613904.961201%
C78623254.133808%
D78627759.857543%

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 8206 7861 91 91 1.11% 1.16%
B 8206 7861 42 42 0.51% 0.53%
C 8207 7862 0 0 0.00% 0.00%
D 8207 7862 404 404 4.92% 5.14%

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 16 486785 2514.07 952 928 193.3
A 15 174 86262 441.56 952 928 193.3
A 0 226 8133 37.28 952 928 193.3
B 7 220 132307 712.22 956 929 184.5
B 0 189 91438 490.66 956 929 184.5
B 10 246 89394 479.58 956 929 184.5
C 14 238 142323 647.54 922 926 218.4
C 3 233 12464 52.84 922 926 218.4
C 8 128 8111 32.9 922 926 218.4
D 5 222 1838991 8242.63 903 874 223.0
D 13 138 212130 947.33 903 874 223.0
D 13 153 179188 799.61 903 874 223.0

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