ASTROSAT CZTI

Data Quality Report

Orbit 26520

Creation date: 2024-06-27T19:30:00.138896
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/AS1C05_019T04_9000003838_26520cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26520cztM0_level2_quad_clean.evt
Size (bytes)640,166,400106,110,720
Size610.5 MB 101.2 MB
Events in quadrant A3,057,419750,274
Events in quadrant B3,326,877763,123
Events in quadrant C3,397,525744,271
Events in quadrant D9,181,676518,079

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130660
B0139230
C0139220
D0315980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254140.223857%
B6255641.023181%
C62551031.646683%
D6255249439.872102%

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 7359 6255 5 5 0.07% 0.08%
B 7360 6256 20 20 0.27% 0.32%
C 7360 6255 12 12 0.16% 0.19%
D 7360 6255 2227 2227 30.26% 35.60%

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 0 13 80048 527.62 754 738 150.3
A 6 16 46249 302.77 754 738 150.3
A 3 15 14629 92.41 754 738 150.3
B 0 189 93817 667.4 756 738 139.5
B 3 112 55651 393.74 756 738 139.5
B 0 244 45471 320.75 756 738 139.5
C 4 254 171017 987.79 743 749 172.4
C 3 233 151587 875.07 743 749 172.4
C 14 238 118601 683.7 743 749 172.4
D 7 80 5247182 37046.86 575 561 141.6
D 1 52 1531863 10812.66 575 561 141.6
D 12 233 162233 1141.58 575 561 141.6

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