ASTROSAT CZTI

Data Quality Report

Orbit 26980

Creation date: 2024-06-27T19:35:12.499982
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/AS1A09_145T01_9000003900_26980cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26980cztM0_level2_quad_clean.evt
Size (bytes)736,718,400107,530,560
Size702.6 MB 102.5 MB
Events in quadrant A10,372,781505,862
Events in quadrant B3,483,008807,891
Events in quadrant C3,598,632770,441
Events in quadrant D4,436,377736,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351890
B0143580
C0147040
D0172870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225329452.915663%
B6225590.947791%
C62251051.686747%
D62251943.116466%

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 7540 6226 2822 2822 37.43% 45.33%
B 7540 6226 0 0 0.00% 0.00%
C 7540 6225 6 6 0.08% 0.10%
D 7540 6226 129 129 1.71% 2.07%

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 14 235 7650188 60229.79 635 625 127.0
A 6 16 240248 1886.7 635 625 127.0
A 8 192 24058 184.5 635 625 127.0
B 12 111 19006 109.37 884 866 165.9
B 11 111 16783 95.97 884 866 165.9
B 14 111 15141 86.07 884 866 165.9
C 14 238 137965 690.83 856 870 198.5
C 2 16 63929 317.76 856 870 198.5
C 15 208 38324 188.73 856 870 198.5
D 1 52 973718 4807.45 847 829 202.4
D 2 250 210845 1037.78 847 829 202.4
D 2 234 29485 141.6 847 829 202.4

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