ASTROSAT CZTI

Data Quality Report

Orbit 34750

Creation date: 2022-03-03T12:02:42.142533
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/AS1C07_004T01_9000004990_34750cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34750cztM0_level2_quad_clean.evt
Size (bytes)737,478,72060,615,360
Size703.3 MB 57.8 MB
Events in quadrant A2,651,672416,860
Events in quadrant B2,874,884428,324
Events in quadrant C2,920,170419,497
Events in quadrant D13,514,636183,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115243
B0120742
C0121682
D0439122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5509150.272282%
B5509330.599020%
C5509290.526411%
D5509487288.437103%

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 7122 5510 5 5 0.07% 0.09%
B 7122 5510 15 15 0.21% 0.27%
C 7122 5510 19 19 0.27% 0.34%
D 7122 5510 4585 4585 64.38% 83.21%

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 9 143 51653 392.77 639 626 129.9
A 10 83 50686 385.33 639 626 129.9
A 15 174 27079 203.62 639 626 129.9
B 0 190 143986 1153.54 640 622 124.3
B 5 255 86542 691.33 640 622 124.3
B 4 232 78309 625.09 640 622 124.3
C 15 214 236729 1603.93 624 629 147.2
C 14 67 111378 752.37 624 629 147.2
C 0 10 97103 655.39 624 629 147.2
D 1 52 10185810 111303.95 362 350 91.5
D 2 250 799167 8729.26 362 350 91.5
D 8 195 432142 4718.51 362 350 91.5

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