ASTROSAT CZTI

Data Quality Report

Orbit 28679

Creation date: 2024-06-27T19:54:51.274771
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/AS1A10_110T03_9000004114_28679cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28679cztM0_level2_quad_clean.evt
Size (bytes)652,345,92082,362,240
Size622.1 MB 78.5 MB
Events in quadrant A3,604,606504,904
Events in quadrant B3,986,829510,530
Events in quadrant C3,906,588491,126
Events in quadrant D7,754,472469,644

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153971
B0165661
C0162381
D0281274

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7442821.101854%
B74422463.305563%
C74433805.105468%
D7442112815.157216%

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 7607 7443 0 0 0.00% 0.00%
B 7607 7442 0 0 0.00% 0.00%
C 7608 7443 0 0 0.00% 0.00%
D 7607 7442 894 894 11.75% 12.01%

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 13 254 13247 64.78 932 910 190.4
A 3 137 8999 42.48 932 910 190.4
A 0 226 7728 35.8 932 910 190.4
B 15 33 309214 1753.53 918 895 175.8
B 10 245 55868 312.65 918 895 175.8
B 12 111 22075 120.46 918 895 175.8
C 14 238 208337 995.11 887 893 208.5
C 3 233 144602 689.38 887 893 208.5
C 14 254 95086 451.85 887 893 208.5
D 1 52 2529032 12224.03 863 840 206.8
D 7 80 1323629 6395.8 863 840 206.8
D 8 195 485547 2343.6 863 840 206.8

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