ASTROSAT CZTI

Data Quality Report

Orbit 19341

Creation date: 2024-06-27T18:01:36.891390
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_204T01_9000002856_19341cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19341cztM0_level2_quad_clean.evt
Size (bytes)625,757,76093,916,800
Size596.8 MB 89.6 MB
Events in quadrant A3,324,580638,058
Events in quadrant B3,457,206642,333
Events in quadrant C3,636,653615,909
Events in quadrant D8,057,957459,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145131
B0147721
C0152461
D0285242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7004660.942319%
B7004841.199315%
C70051091.556031%
D7004176325.171331%

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 7569 7005 0 0 0.00% 0.00%
B 7569 7004 12 12 0.16% 0.17%
C 7570 7006 3 3 0.04% 0.04%
D 7569 7004 1691 1691 22.34% 24.14%

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 11 29 15246 83.65 853 834 172.3
A 5 16 7851 40.73 853 834 172.3
A 0 226 7507 38.73 853 834 172.3
B 7 220 28428 171.19 847 824 161.3
B 15 32 24813 148.77 847 824 161.3
B 0 229 24188 144.89 847 824 161.3
C 3 233 316334 1637.36 819 825 192.7
C 14 238 125924 649.21 819 825 192.7
C 13 61 5882 26.24 819 825 192.7
D 7 238 4053767 23069.85 713 691 175.7
D 1 52 740205 4209.27 713 691 175.7
D 10 66 423242 2405.13 713 691 175.7

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