ASTROSAT CZTI

Data Quality Report

Orbit 31663

Creation date: 2024-06-27T20:31:15.980759
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_056T01_9000004626_31663cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31663cztM0_level2_quad_clean.evt
Size (bytes)563,644,80094,032,000
Size537.5 MB 89.7 MB
Events in quadrant A3,290,553596,920
Events in quadrant B5,459,611598,110
Events in quadrant C3,942,577577,307
Events in quadrant D3,887,619572,194

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146491
B0218781
C0164001
D0163741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7228490.677919%
B72281061.466519%
C72281311.812396%
D7228300.415053%

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 7638 7229 0 0 0.00% 0.00%
B 7638 7229 0 0 0.00% 0.00%
C 7638 7229 15 15 0.20% 0.21%
D 7638 7229 4 4 0.05% 0.06%

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 15 174 24380 138.16 844 825 170.5
A 13 254 12346 67.57 844 825 170.5
A 3 137 8842 47.02 844 825 170.5
B 6 159 1982746 12240.86 838 815 161.9
B 4 80 85264 521.58 838 815 161.9
B 10 245 39512 239.0 838 815 161.9
C 3 233 373873 1961.93 806 810 190.2
C 10 22 138884 726.13 806 810 190.2
C 14 238 129657 677.6 806 810 190.2
D 8 195 747681 3843.06 815 792 194.3
D 2 234 36161 181.99 815 792 194.3
D 2 250 26123 130.34 815 792 194.3

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