ASTROSAT CZTI

Data Quality Report

Orbit 34811

Creation date: 2022-03-07T04:46:28.181188
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_005T01_9000004992_34811cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34811cztM0_level2_quad_clean.evt
Size (bytes)415,635,840104,290,560
Size396.4 MB 99.5 MB
Events in quadrant A2,584,369715,632
Events in quadrant B2,916,167724,035
Events in quadrant C2,794,559699,299
Events in quadrant D3,936,036652,215

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109982
B0119231
C0111961
D0155791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5249250.476281%
B5249961.828920%
C5249551.047819%
D52492053.905506%

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 7132 5250 17 17 0.24% 0.32%
B 7132 5250 70 70 0.98% 1.33%
C 7132 5250 30 30 0.42% 0.57%
D 7132 5250 174 174 2.44% 3.31%

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 15 174 60900 484.43 627 615 124.4
A 10 83 50748 402.85 627 615 124.4
A 7 16 21803 170.26 627 615 124.4
B 5 172 249568 2126.05 626 612 117.1
B 5 63 66925 566.3 626 612 117.1
B 0 190 26746 223.18 626 612 117.1
C 15 214 237791 1705.93 609 615 139.0
C 0 10 145894 1044.94 609 615 139.0
C 14 67 19894 138.67 609 615 139.0
D 8 195 792110 4993.05 590 579 158.5
D 2 249 359053 2261.29 590 579 158.5
D 13 249 226933 1427.86 590 579 158.5

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