ASTROSAT CZTI

Data Quality Report

Orbit 30850

Creation date: 2024-06-27T20:20:19.895503
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_071T40_9000004458_30850cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30850cztM0_level2_quad_clean.evt
Size (bytes)780,428,16085,783,680
Size744.3 MB 81.8 MB
Events in quadrant A3,724,205542,171
Events in quadrant B10,907,202504,752
Events in quadrant C3,856,660516,045
Events in quadrant D4,638,082509,637

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156832
B0376272
C0160362
D0185292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75432853.778338%
B7543177123.478722%
C75433644.825666%
D75432733.619250%

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 7798 7543 0 0 0.00% 0.00%
B 7798 7543 620 620 7.95% 8.22%
C 7798 7543 8 8 0.10% 0.11%
D 7798 7543 51 51 0.65% 0.68%

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 13 254 13423 63.64 964 941 196.1
A 3 137 9964 46.0 964 941 196.1
A 0 226 8024 36.11 964 941 196.1
B 6 36 5120960 29131.31 907 882 175.8
B 6 159 2084442 11854.67 907 882 175.8
B 5 255 51812 289.77 907 882 175.8
C 14 238 146991 681.6 914 919 214.3
C 0 10 98312 454.46 914 919 214.3
C 2 16 19652 87.41 914 919 214.3
D 8 195 831511 3771.28 928 907 220.2
D 1 52 175118 790.99 928 907 220.2
D 2 250 62935 281.63 928 907 220.2

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