ASTROSAT CZTI

Data Quality Report

Orbit 31849

Creation date: 2024-06-27T20:33:28.852096
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/AS1A10_109T01_9000004646_31849cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31849cztM0_level2_quad_clean.evt
Size (bytes)593,075,520115,945,920
Size565.6 MB 110.6 MB
Events in quadrant A3,667,304779,481
Events in quadrant B5,643,437766,661
Events in quadrant C4,151,666729,418
Events in quadrant D4,002,823726,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154982
B0223332
C0169622
D0165772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7324801.092299%
B73241722.348443%
C73243504.778809%
D73241061.447297%

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 7729 7325 0 0 0.00% 0.00%
B 7729 7325 6 6 0.08% 0.08%
C 7729 7325 60 60 0.78% 0.82%
D 7729 7325 55 55 0.71% 0.75%

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 6 14781 72.56 947 930 190.9
A 13 254 12869 62.54 947 930 190.9
A 3 137 9773 46.32 947 930 190.9
B 6 159 1916243 10625.02 929 907 180.3
B 10 247 34402 185.81 929 907 180.3
B 10 245 25944 138.89 929 907 180.3
C 0 10 324793 1534.41 895 904 211.1
C 14 238 170587 803.87 895 904 211.1
C 3 233 95158 446.52 895 904 211.1
D 8 195 197834 893.68 916 895 220.4
D 2 120 123435 556.07 916 895 220.4
D 12 233 85426 383.59 916 895 220.4

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