ASTROSAT CZTI

Data Quality Report

Orbit 20991

Creation date: 2024-06-27T18:22:06.726751
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/AS1A05_072T04_9000003094_20991cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_20991cztM0_level2_quad_clean.evt
Size (bytes)545,091,84086,273,280
Size519.8 MB 82.3 MB
Events in quadrant A3,374,299553,407
Events in quadrant B3,657,030552,190
Events in quadrant C3,384,626528,300
Events in quadrant D5,618,641492,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143982
B0151302
C0144002
D0212102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69791592.278263%
B69792082.980370%
C69791832.622152%
D697991513.110761%

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 7659 6980 0 0 0.00% 0.00%
B 7659 6980 25 25 0.33% 0.36%
C 7659 6980 0 0 0.00% 0.00%
D 7659 6980 804 804 10.50% 11.52%

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 12 96 20705 112.31 871 853 176.8
A 0 226 7577 38.04 871 853 176.8
A 3 137 7124 35.48 871 853 176.8
B 7 220 136984 819.83 865 843 166.1
B 3 64 50680 300.12 865 843 166.1
B 12 111 19629 113.13 865 843 166.1
C 14 238 130983 670.33 833 837 194.2
C 13 61 5739 25.25 833 837 194.2
C 9 54 4974 21.31 833 837 194.2
D 1 52 1923646 9734.37 812 787 197.5
D 1 239 510052 2578.13 812 787 197.5
D 7 38 84839 425.51 812 787 197.5

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