ASTROSAT CZTI

Data Quality Report

Orbit 03667

Creation date: 2024-06-27T14:32:11.885030
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/AS1G05_191T01_9000000476_03667cztM0_level2.evt modeM0/AS1G05_191T01_9000000476_03667cztM0_level2_quad_clean.evt
Size (bytes)587,249,28099,610,560
Size560.0 MB 95.0 MB
Events in quadrant A4,366,636631,563
Events in quadrant B4,305,758626,487
Events in quadrant C3,724,164623,270
Events in quadrant D4,852,596585,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01831728
B01802950
C01653433
D02017355

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01642
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78961201.519757%
B78931531.938426%
C7895680.861305%
D78934415.587229%

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 8489 7909 27 27 0.32% 0.34%
B 8489 7911 7 7 0.08% 0.09%
C 8489 7911 1 1 0.01% 0.01%
D 8489 7910 348 348 4.10% 4.40%

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 13 251 375123 1916.05 955 935 195.3
A 13 164 248382 1267.07 955 935 195.3
A 0 50 22172 108.75 955 935 195.3
B 15 204 283120 1497.52 970 947 188.4
B 4 81 124512 655.77 970 947 188.4
B 4 170 57239 298.75 970 947 188.4
C 9 247 47360 211.4 936 941 219.6
C 13 61 7893 31.66 936 941 219.6
C 8 128 7460 29.69 936 941 219.6
D 13 172 996867 4421.52 915 889 225.3
D 13 223 248212 1097.96 915 889 225.3
D 12 110 43956 191.19 915 889 225.3

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
Veto Counter