ASTROSAT CZTI

Data Quality Report

Orbit 17118

Creation date: 2024-06-27T17:32:21.091017
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/AS1A05_004T03_9000002538_17118cztM0_level2.evt modeM0/AS1A05_004T03_9000002538_17118cztM0_level2_quad_clean.evt
Size (bytes)490,072,320109,163,520
Size467.4 MB 104.1 MB
Events in quadrant A3,266,113715,589
Events in quadrant B3,574,885714,382
Events in quadrant C3,804,978685,411
Events in quadrant D3,696,044678,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149531
B0154741
C0158731
D0161131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73591021.386058%
B73601021.385870%
C73601331.807065%
D7360971.317935%

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 7924 7360 0 0 0.00% 0.00%
B 7925 7360 9 9 0.11% 0.12%
C 7925 7361 0 0 0.00% 0.00%
D 7925 7360 17 17 0.21% 0.23%

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 0 226 7577 38.63 850 826 174.7
A 12 194 6270 31.15 850 826 174.7
A 3 137 6032 29.79 850 826 174.7
B 7 220 76861 465.29 844 819 163.4
B 0 197 74738 452.3 844 819 163.4
B 15 35 31034 184.88 844 819 163.4
C 3 233 502706 2637.96 813 817 190.3
C 14 238 123510 644.88 813 817 190.3
C 13 61 5865 26.53 813 817 190.3
D 5 222 144336 707.49 830 804 202.9
D 7 38 140241 687.3 830 804 202.9
D 1 52 126753 620.82 830 804 202.9

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