ASTROSAT CZTI

Data Quality Report

Orbit 33669

Creation date: 2024-06-27T20:51:18.718667
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_076T01_9000004810_33669cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33669cztM0_level2_quad_clean.evt
Size (bytes)712,209,60058,818,240
Size679.2 MB 56.1 MB
Events in quadrant A10,686,994118,109
Events in quadrant B3,313,803438,601
Events in quadrant C3,554,518448,603
Events in quadrant D3,679,202426,951

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351743
B0131972
C0143452
D0146552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4954418884.537747%
B49541843.714170%
C49541573.169156%
D4954490.989100%

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 7017 4953 3745 3745 53.37% 75.61%
B 7018 4955 155 155 2.21% 3.13%
C 7018 4955 126 126 1.80% 2.54%
D 7018 4955 42 42 0.60% 0.85%

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 15 169 9730249 234627.38 201 198 41.5
A 15 237 155341 3741.07 201 198 41.5
A 9 143 12743 302.51 201 198 41.5
B 5 172 539360 4300.35 668 653 125.3
B 8 128 37013 290.25 668 653 125.3
B 0 244 24256 188.42 668 653 125.3
C 3 233 383837 2573.62 657 666 148.9
C 0 10 348552 2336.62 657 666 148.9
C 15 214 226017 1513.6 657 666 148.9
D 8 195 654635 3862.29 658 644 169.3
D 13 249 126675 744.3 658 644 169.3
D 7 223 84798 496.99 658 644 169.3

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