ASTROSAT CZTI

Data Quality Report

Orbit 15720

Creation date: 2024-06-27T17:12:33.825013
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/AS1A04_198T01_9000002322_15720cztM0_level2.evt modeM0/AS1A04_198T01_9000002322_15720cztM0_level2_quad_clean.evt
Size (bytes)455,345,28088,902,720
Size434.3 MB 84.8 MB
Events in quadrant A2,838,989567,235
Events in quadrant B3,002,180584,040
Events in quadrant C3,274,941571,491
Events in quadrant D4,268,021551,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122382
B0126121
C0136521
D0167921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5979160.267603%
B5979350.585382%
C5979611.020237%
D59791522.542231%

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 7280 5981 1 1 0.01% 0.02%
B 7280 5981 9 9 0.12% 0.15%
C 7280 5981 0 0 0.00% 0.00%
D 7280 5981 108 108 1.48% 1.81%

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 9 143 15632 100.96 734 720 147.7
A 0 226 6602 39.82 734 720 147.7
A 12 194 5471 32.17 734 720 147.7
B 5 236 42381 300.11 737 719 138.8
B 4 173 37652 266.04 737 719 138.8
B 0 189 16268 112.0 737 719 138.8
C 3 233 313767 1843.2 728 733 169.8
C 14 238 111792 653.93 728 733 169.8
C 10 187 6587 34.47 728 733 169.8
D 12 144 774761 4425.5 725 707 174.9
D 1 52 419793 2396.04 725 707 174.9
D 10 70 237002 1350.97 725 707 174.9

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