ASTROSAT CZTI

Data Quality Report

Orbit 20890

Creation date: 2024-06-27T18:20:49.158569
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/AS1A06_002T03_9000003080_20890cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20890cztM0_level2_quad_clean.evt
Size (bytes)534,697,92099,823,680
Size509.9 MB 95.2 MB
Events in quadrant A3,507,248641,772
Events in quadrant B3,787,561644,678
Events in quadrant C3,513,341632,314
Events in quadrant D4,902,366608,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148392
B0156042
C0148052
D0196233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71161452.037662%
B71161902.670039%
C71161872.627881%
D71151742.445538%

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 7661 7117 7 7 0.09% 0.10%
B 7661 7117 17 17 0.22% 0.24%
C 7661 7117 0 0 0.00% 0.00%
D 7660 7116 74 74 0.97% 1.04%

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 79877 440.66 892 873 179.3
A 0 226 7777 38.51 892 873 179.3
A 3 137 7421 36.52 892 873 179.3
B 7 220 195361 1155.36 884 862 168.3
B 0 189 33926 196.41 884 862 168.3
B 0 230 27744 159.68 884 862 168.3
C 14 238 135648 684.3 854 859 197.0
C 10 91 39196 194.63 854 859 197.0
C 9 54 8404 38.3 854 859 197.0
D 1 20 1265878 6011.38 869 843 210.4
D 9 1 139045 656.73 869 843 210.4
D 5 222 116948 551.72 869 843 210.4

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