ASTROSAT CZTI

Data Quality Report

Orbit 27633

Creation date: 2024-06-27T19:42:24.127318
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/AS1T03_257T01_9000003976_27633cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27633cztM0_level2_quad_clean.evt
Size (bytes)507,692,16088,254,720
Size484.2 MB 84.2 MB
Events in quadrant A3,229,410573,600
Events in quadrant B3,494,164595,918
Events in quadrant C3,285,471554,266
Events in quadrant D4,943,542513,439

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132700
B0140790
C0133920
D0187750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6232620.994865%
B62321081.732991%
C62321091.749037%
D62323355.375481%

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 7581 6231 7 7 0.09% 0.11%
B 7581 6231 20 20 0.26% 0.32%
C 7581 6231 1 1 0.01% 0.02%
D 7581 6231 263 263 3.47% 4.22%

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 8 192 11350 64.62 831 817 163.0
A 13 254 11156 63.43 831 817 163.0
A 14 223 7624 41.76 831 817 163.0
B 3 64 100464 642.71 837 818 155.0
B 10 245 62128 395.45 837 818 155.0
B 0 230 23667 147.37 837 818 155.0
C 14 238 132189 712.73 801 809 184.3
C 3 233 24087 126.28 801 809 184.3
C 2 16 6011 28.22 801 809 184.3
D 1 52 1742088 9403.08 781 759 185.2
D 7 80 145007 778.93 781 759 185.2
D 2 250 85600 458.14 781 759 185.2

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