ASTROSAT CZTI

Data Quality Report

Orbit 03845

Creation date: 2024-06-27T14:34:18.136930
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_03845cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03845cztM0_level2_quad_clean.evt
Size (bytes)441,218,88066,205,440
Size420.8 MB 63.1 MB
Events in quadrant A3,658,049396,614
Events in quadrant B2,905,763407,626
Events in quadrant C3,795,807396,987
Events in quadrant D2,604,294393,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149092
B0128171
C0154641
D0122441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58632384.059355%
B5863360.614020%
C5863260.443459%
D5863230.392291%

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 6868 5863 252 252 3.67% 4.30%
B 6868 5863 1 1 0.01% 0.02%
C 6868 5864 5 5 0.07% 0.09%
D 6868 5863 15 15 0.22% 0.26%

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 15 234 1103273 8143.82 657 641 135.4
A 0 199 11409 79.53 657 641 135.4
A 0 226 7522 50.82 657 641 135.4
B 15 204 212012 1608.75 672 655 131.4
B 4 81 57848 435.33 672 655 131.4
B 0 244 21330 157.37 672 655 131.4
C 2 53 1255803 8264.5 644 647 151.9
C 10 65 8336 50.63 644 647 151.9
C 13 61 5453 31.64 644 647 151.9
D 13 248 77522 477.77 639 620 161.0
D 13 223 50598 310.5 639 620 161.0
D 2 14 32287 196.74 639 620 161.0

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