ASTROSAT CZTI

Data Quality Report

Orbit 20114

Creation date: 2024-06-27T18:11:30.028939
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_180T01_9000002992_20114cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20114cztM0_level2_quad_clean.evt
Size (bytes)601,551,360107,251,200
Size573.7 MB 102.3 MB
Events in quadrant A4,118,596700,053
Events in quadrant B3,864,090716,347
Events in quadrant C3,357,162689,120
Events in quadrant D6,405,221656,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167522
B0160522
C0144592
D0238072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69813394.856038%
B69811011.446784%
C6981861.231915%
D6982104815.010026%

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 8641 6983 173 173 2.00% 2.48%
B 8641 6983 11 11 0.13% 0.16%
C 8641 6983 0 0 0.00% 0.00%
D 8642 6984 929 929 10.75% 13.30%

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 14 238 821949 4801.4 847 830 171.0
A 9 143 15583 86.27 847 830 171.0
A 14 237 11778 64.02 847 830 171.0
B 10 245 451072 2741.82 855 836 164.2
B 0 198 32479 192.7 855 836 164.2
B 0 183 27310 161.22 855 836 164.2
C 14 238 127426 654.78 823 830 193.3
C 3 233 20414 101.29 823 830 193.3
C 13 61 5910 26.27 823 830 193.3
D 7 238 2374067 12437.91 789 769 190.8
D 1 52 804017 4209.64 789 769 190.8
D 11 176 141124 735.57 789 769 190.8

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