ASTROSAT CZTI

Data Quality Report

Orbit 26453

Creation date: 2024-06-27T19:29:11.739259
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_056T01_9000003824_26453cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26453cztM0_level2_quad_clean.evt
Size (bytes)579,709,44086,437,440
Size552.9 MB 82.4 MB
Events in quadrant A3,680,294530,000
Events in quadrant B3,728,670539,468
Events in quadrant C4,013,496515,334
Events in quadrant D5,609,485494,577

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159070
B0160010
C0167370
D0216360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77332072.676840%
B77322443.155717%
C77332803.620846%
D77336218.030519%

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 8458 7734 0 0 0.00% 0.00%
B 8457 7733 1 1 0.01% 0.01%
C 8458 7735 24 24 0.28% 0.31%
D 8458 7735 377 377 4.46% 4.87%

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 6 16 41530 213.74 940 917 190.0
A 13 254 12352 60.18 940 917 190.0
A 3 137 9104 43.09 940 917 190.0
B 12 111 23381 124.46 939 913 180.5
B 0 190 23289 123.95 939 913 180.5
B 11 111 20359 107.72 939 913 180.5
C 2 16 220728 1032.27 904 905 213.0
C 14 238 142049 662.8 904 905 213.0
C 3 233 99860 464.68 904 905 213.0
D 7 80 810951 3844.18 885 861 210.7
D 11 176 572831 2714.21 885 861 210.7
D 1 52 552828 2619.29 885 861 210.7

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