ASTROSAT CZTI

Data Quality Report

Orbit 16492

Creation date: 2024-06-27T17:23:30.822591
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_174T01_9000002440_16492cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16492cztM0_level2_quad_clean.evt
Size (bytes)584,726,40078,503,040
Size557.6 MB 74.9 MB
Events in quadrant A4,372,794459,521
Events in quadrant B4,254,083468,665
Events in quadrant C4,613,106455,270
Events in quadrant D3,937,669449,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182074
B0176233
C0190613
D0172753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78084035.161373%
B78084445.686475%
C78084665.968238%
D78083314.239242%

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 8314 7810 59 59 0.71% 0.76%
B 8314 7809 53 53 0.64% 0.68%
C 8314 7809 0 0 0.00% 0.00%
D 8314 7809 55 55 0.66% 0.70%

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 15 174 668752 3384.49 963 939 197.3
A 0 226 8218 36.89 963 939 197.3
A 3 137 7505 33.27 963 939 197.3
B 0 189 140014 734.83 960 931 189.3
B 4 48 136662 717.12 960 931 189.3
B 15 35 132404 694.62 960 931 189.3
C 3 233 846677 3842.38 927 933 220.1
C 14 238 140354 633.42 927 933 220.1
C 7 247 14411 61.23 927 933 220.1
D 12 218 126903 539.33 950 921 233.6
D 5 222 97607 413.91 950 921 233.6
D 13 248 53092 223.35 950 921 233.6

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