ASTROSAT CZTI

Data Quality Report

Orbit 03942

Creation date: 2024-06-27T14:35:31.590289
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_172T01_9000000502_03942cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03942cztM0_level2_quad_clean.evt
Size (bytes)492,969,60086,970,240
Size470.1 MB 82.9 MB
Events in quadrant A3,649,440532,230
Events in quadrant B3,536,058540,439
Events in quadrant C3,251,904535,432
Events in quadrant D3,993,995515,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159254
B0153601
C0151035
D0171695

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73322283.109656%
B73331612.195554%
C7331841.145819%
D73312853.887601%

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 7368 7334 24 24 0.33% 0.33%
B 7368 7334 0 0 0.00% 0.00%
C 7368 7334 0 0 0.00% 0.00%
D 7368 7334 105 105 1.43% 1.43%

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 0 118 200084 1126.99 852 830 176.8
A 0 199 77786 435.27 852 830 176.8
A 0 226 33774 186.33 852 830 176.8
B 15 204 64407 380.39 861 838 167.1
B 14 167 64251 379.46 861 838 167.1
B 4 81 26085 151.07 861 838 167.1
C 13 61 6926 31.21 829 830 195.3
C 8 128 6514 29.1 829 830 195.3
C 8 112 3226 12.27 829 830 195.3
D 2 232 345823 1715.48 824 796 201.1
D 13 248 193492 958.09 824 796 201.1
D 13 239 100196 494.22 824 796 201.1

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