ASTROSAT CZTI

Data Quality Report

Orbit 25247

Creation date: 2024-06-27T19:15:28.472344
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/AS1A07_097T01_9000003692_25247cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25247cztM0_level2_quad_clean.evt
Size (bytes)591,379,20084,960,000
Size564.0 MB 81.0 MB
Events in quadrant A3,309,491543,666
Events in quadrant B3,348,622548,614
Events in quadrant C3,757,465522,049
Events in quadrant D7,041,669492,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138450
B0139240
C0150210
D0255110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6680781.167665%
B6681851.272265%
C66801612.410180%
D6680104515.643713%

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 7350 6681 0 0 0.00% 0.00%
B 7351 6682 0 0 0.00% 0.00%
C 7350 6681 16 16 0.22% 0.24%
D 7350 6681 697 697 9.48% 10.43%

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 3 1 16665 91.28 853 836 173.4
A 13 254 10894 58.0 853 836 173.4
A 3 137 7780 40.04 853 836 173.4
B 0 190 20975 122.01 846 825 165.1
B 12 111 19722 114.42 846 825 165.1
B 11 111 17586 101.49 846 825 165.1
C 2 16 309514 1611.22 814 820 191.6
C 14 238 131375 681.43 814 820 191.6
C 7 247 105160 544.6 814 820 191.6
D 1 239 1474071 7569.03 794 770 194.6
D 9 35 1126589 5783.85 794 770 194.6
D 10 70 449923 2307.5 794 770 194.6

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