ASTROSAT CZTI

Data Quality Report

Orbit 06403

Creation date: 2024-06-27T15:06:45.919944
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/AS1C02_011T01_9000000850_06403cztM0_level2.evt modeM0/AS1C02_011T01_9000000850_06403cztM0_level2_quad_clean.evt
Size (bytes)531,498,240104,411,520
Size506.9 MB 99.6 MB
Events in quadrant A3,897,070654,262
Events in quadrant B3,827,018664,888
Events in quadrant C3,747,164666,613
Events in quadrant D4,101,438639,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167153
B0165842
C0166052
D0173572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77212222.875275%
B77212363.056599%
C7721861.113845%
D77211231.593058%

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 8061 7723 1 1 0.01% 0.01%
B 8061 7723 8 8 0.10% 0.10%
C 8061 7723 2 2 0.02% 0.03%
D 8061 7723 37 37 0.46% 0.48%

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 15 99951 513.56 940 918 192.8
A 15 174 65854 336.74 940 918 192.8
A 15 236 52487 267.43 940 918 192.8
B 15 204 33171 174.32 943 920 185.0
B 15 35 28997 151.76 943 920 185.0
B 4 81 26660 139.13 943 920 185.0
C 9 16 117168 542.26 912 915 214.4
C 8 208 52128 238.88 912 915 214.4
C 8 128 9208 38.68 912 915 214.4
D 2 152 210548 932.49 916 885 224.8
D 4 95 131749 582.02 916 885 224.8
D 14 173 84791 373.17 916 885 224.8

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