ASTROSAT CZTI

Data Quality Report

Orbit 03850

Creation date: 2024-06-27T14:34:21.437444
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/AS1G05_189T01_9000000492_03850cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03850cztM0_level2_quad_clean.evt
Size (bytes)426,948,48072,181,440
Size407.2 MB 68.8 MB
Events in quadrant A3,118,218447,795
Events in quadrant B3,247,988452,704
Events in quadrant C3,160,566432,686
Events in quadrant D2,984,856422,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129552
B0133731
C0135431
D0131331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6156580.942170%
B6156631.023392%
C6156400.649773%
D6156250.406108%

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 7441 6156 1 1 0.01% 0.02%
B 7441 6156 1 1 0.01% 0.02%
C 7441 6156 2 2 0.03% 0.03%
D 7441 6157 10 10 0.13% 0.16%

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 5 143 61833 397.09 761 747 153.8
A 8 15 54037 346.41 761 747 153.8
A 15 234 32858 208.74 761 747 153.8
B 0 244 145383 979.77 766 750 147.6
B 15 204 96024 645.4 766 750 147.6
B 14 167 21770 142.39 766 750 147.6
C 2 53 293383 1741.07 722 725 168.1
C 9 247 25673 148.42 722 725 168.1
C 10 65 11253 62.63 722 725 168.1
D 8 112 143637 810.75 725 704 176.3
D 2 32 43610 243.37 725 704 176.3
D 13 248 32389 179.73 725 704 176.3

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
Veto Counter