ASTROSAT CZTI

Data Quality Report

Orbit 30548

Creation date: 2024-06-27T20:16:48.251097
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_053T20_9000004398_30548cztM0_level2.evt modeM0/AS1A10_053T20_9000004398_30548cztM0_level2_quad_clean.evt
Size (bytes)630,227,52096,707,520
Size601.0 MB 92.2 MB
Events in quadrant A3,526,514622,298
Events in quadrant B5,816,906612,853
Events in quadrant C4,486,483592,817
Events in quadrant D4,751,420581,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152181
B0226861
C0179691
D0189581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7466370.495580%
B74661291.727833%
C74674776.388108%
D74672463.294496%

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 7846 7468 1 1 0.01% 0.01%
B 7846 7468 23 23 0.29% 0.31%
C 7847 7469 307 307 3.91% 4.11%
D 7847 7468 156 156 1.99% 2.09%

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 8 192 17608 91.29 909 890 183.1
A 13 254 13346 68.02 909 890 183.1
A 3 137 9293 45.89 909 890 183.1
B 6 159 2162075 12364.37 897 875 174.8
B 4 171 71150 402.05 897 875 174.8
B 6 36 22727 125.02 897 875 174.8
C 10 22 938472 4786.68 834 838 195.9
C 14 238 134714 683.44 834 838 195.9
C 0 10 84576 427.49 834 838 195.9
D 1 52 1020431 4897.15 870 847 208.2
D 8 195 204009 975.8 870 847 208.2
D 13 104 109351 521.15 870 847 208.2

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