ASTROSAT CZTI

Data Quality Report

Orbit 31717

Creation date: 2024-06-27T20:31:52.855844
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/AS1T04_034T01_9000004632_31717cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31717cztM0_level2_quad_clean.evt
Size (bytes)698,362,560103,734,720
Size666.0 MB 98.9 MB
Events in quadrant A5,918,982647,325
Events in quadrant B5,443,043701,654
Events in quadrant C5,226,421662,106
Events in quadrant D4,115,082669,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221222
B0207252
C0198212
D0167682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A660592914.065102%
B66051812.740348%
C660570310.643452%
D6605370.560182%

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 7690 6606 640 640 8.32% 9.69%
B 7690 6606 18 18 0.23% 0.27%
C 7690 6606 481 481 6.25% 7.28%
D 7690 6606 8 8 0.10% 0.12%

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 0 13 2774444 17193.07 810 795 161.3
A 13 254 12024 69.61 810 795 161.3
A 14 238 10001 57.07 810 795 161.3
B 6 159 1815647 11052.38 861 839 164.2
B 0 229 95668 577.52 861 839 164.2
B 5 172 58441 350.8 861 839 164.2
C 10 22 1237147 6611.65 803 809 187.0
C 0 10 608472 3249.64 803 809 187.0
C 14 238 131353 698.12 803 809 187.0
D 8 195 829531 4119.67 849 827 201.2
D 2 234 26619 128.22 849 827 201.2
D 13 249 21913 104.82 849 827 201.2

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