ASTROSAT CZTI

Data Quality Report

Orbit 45911

Creation date: 2024-06-27T23:17:36.798058
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/AS1A13_071T03_9000006142_45911cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45911cztM0_level2_quad_clean.evt
Size (bytes)669,778,56091,454,400
Size638.8 MB 87.2 MB
Events in quadrant A5,330,510645,235
Events in quadrant B4,732,473638,993
Events in quadrant C2,830,092652,970
Events in quadrant D11,425,978403,412

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201452
B0182842
C0129002
D0381682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61291682.741067%
B61304747.732463%
C6130721.174551%
D6129240339.207048%

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 6994 6131 1 1 0.01% 0.02%
B 6995 6131 259 259 3.70% 4.22%
C 6995 6132 14 14 0.20% 0.23%
D 6994 6129 2358 2358 33.71% 38.47%

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 10 83 2707395 19362.08 671 656 139.8
A 13 6 11171 75.22 671 656 139.8
A 13 254 9028 59.89 671 656 139.8
B 3 112 2026126 15455.49 660 639 131.1
B 0 186 23056 171.05 660 639 131.1
B 0 183 22949 170.24 660 639 131.1
C 12 2 86917 535.8 674 679 161.0
C 4 254 75423 464.39 674 679 161.0
C 3 233 10915 63.6 674 679 161.0
D 11 241 5535853 38337.77 571 553 144.4
D 1 52 2234191 15470.29 571 553 144.4
D 13 249 954720 6608.61 571 553 144.4

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