ASTROSAT CZTI

Data Quality Report

Orbit 03868

Creation date: 2024-06-27T14:34:35.485798
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_083T01_9000000494_03868cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03868cztM0_level2_quad_clean.evt
Size (bytes)592,646,400102,458,880
Size565.2 MB 97.7 MB
Events in quadrant A4,272,934641,948
Events in quadrant B3,959,521653,655
Events in quadrant C5,010,144637,584
Events in quadrant D4,172,926623,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182163
B0170432
C0201842
D0182222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78504525.757962%
B78502943.745223%
C78503594.573248%
D78503764.789809%

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 8675 7850 62 62 0.71% 0.79%
B 8675 7850 1 1 0.01% 0.01%
C 8675 7850 32 32 0.37% 0.41%
D 8674 7849 92 92 1.06% 1.17%

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 0 118 546870 2956.14 904 882 184.7
A 8 15 95183 510.57 904 882 184.7
A 0 226 59414 316.91 904 882 184.7
B 15 204 365671 2082.92 912 888 175.1
B 4 48 22962 126.04 912 888 175.1
B 12 111 14293 76.54 912 888 175.1
C 2 53 1544600 7618.09 875 877 202.6
C 8 128 19775 93.26 875 877 202.6
C 8 112 9572 42.91 875 877 202.6
D 14 34 412732 1933.66 878 850 213.0
D 2 32 70286 325.98 878 850 213.0
D 13 239 61001 282.39 878 850 213.0

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