ASTROSAT CZTI

Data Quality Report

Orbit 03087

Creation date: 2024-06-27T14:24:28.695715
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/AS1G05_237T03_9000000426_03087cztM0_level2.evt modeM0/AS1G05_237T03_9000000426_03087cztM0_level2_quad_clean.evt
Size (bytes)601,922,88076,985,280
Size574.0 MB 73.4 MB
Events in quadrant A3,818,246458,034
Events in quadrant B4,279,365455,676
Events in quadrant C4,969,938440,774
Events in quadrant D4,640,435441,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165123
B0177562
C0199392
D0192942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76881471.912071%
B76881782.315297%
C76884035.241935%
D76882983.876171%

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 7793 7689 15 15 0.19% 0.20%
B 7793 7689 26 26 0.33% 0.34%
C 7793 7689 235 235 3.02% 3.06%
D 7793 7689 152 152 1.95% 1.98%

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 12 247 203003 1078.13 911 891 187.5
A 8 15 35315 183.63 911 891 187.5
A 13 251 21885 111.99 911 891 187.5
B 7 252 246475 1377.08 920 898 178.3
B 3 0 126833 706.18 920 898 178.3
B 0 230 98893 549.51 920 898 178.3
C 14 223 591893 2892.47 866 872 204.3
C 5 250 472937 2310.3 866 872 204.3
C 1 16 138190 672.04 866 872 204.3
D 10 85 422655 1998.65 871 844 211.0
D 2 136 262339 1239.03 871 844 211.0
D 10 172 190300 897.69 871 844 211.0

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
Veto Counter