ASTROSAT CZTI

Data Quality Report

Orbit 14044

Creation date: 2024-06-27T16:49:36.649828
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_162T01_9000002074_14044cztM0_level2.evt modeM0/AS1A04_162T01_9000002074_14044cztM0_level2_quad_clean.evt
Size (bytes)566,161,920140,411,520
Size539.9 MB 133.9 MB
Events in quadrant A3,724,827953,377
Events in quadrant B4,397,253959,601
Events in quadrant C3,757,302922,821
Events in quadrant D4,747,397884,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163143
B0183052
C0162642
D0191242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7663540.704685%
B76632142.792640%
C7663811.057027%
D76631972.570795%

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 8559 7666 4 4 0.05% 0.05%
B 8559 7666 64 64 0.75% 0.83%
C 8559 7666 33 33 0.39% 0.43%
D 8559 7666 139 139 1.62% 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 8 15 114112 627.59 882 862 180.5
A 12 189 84080 461.17 882 862 180.5
A 15 222 75061 411.19 882 862 180.5
B 0 219 376311 2261.95 884 863 166.0
B 10 245 327774 1969.53 884 863 166.0
B 0 189 115696 691.83 884 863 166.0
C 3 233 340389 1744.51 846 849 194.6
C 14 220 58635 296.9 846 849 194.6
C 0 207 29029 144.79 846 849 194.6
D 1 52 703546 3471.38 836 810 202.4
D 15 0 345092 1700.69 836 810 202.4
D 8 195 325765 1605.22 836 810 202.4

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