ASTROSAT CZTI

Data Quality Report

Orbit 23381

Creation date: 2024-06-27T18:53:36.084756
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/AS1A07_138T09_9000003458_23381cztM0_level2.evt modeM0/AS1A07_138T09_9000003458_23381cztM0_level2_quad_clean.evt
Size (bytes)570,006,72083,142,720
Size543.6 MB 79.3 MB
Events in quadrant A3,630,460502,465
Events in quadrant B3,871,386505,213
Events in quadrant C4,288,364488,759
Events in quadrant D4,953,162488,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158223
B0164063
C0176734
D0200023

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7656760.992685%
B76561361.776385%
C76551832.390594%
D76552563.344219%

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 7896 7658 0 0 0.00% 0.00%
B 7896 7658 1 1 0.01% 0.01%
C 7895 7656 1 1 0.01% 0.01%
D 7895 7656 107 107 1.36% 1.40%

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 11595 56.27 941 921 189.7
A 3 137 8562 40.28 941 921 189.7
A 0 226 8042 37.54 941 921 189.7
B 0 189 170435 950.88 930 903 178.3
B 0 190 37272 203.99 930 903 178.3
B 12 111 21532 115.71 930 903 178.3
C 0 239 585031 2761.61 903 908 211.5
C 14 238 143880 675.94 903 908 211.5
C 7 247 13258 58.39 903 908 211.5
D 1 52 1306959 5832.59 917 888 223.9
D 13 104 50624 222.11 917 888 223.9
D 7 238 50243 220.41 917 888 223.9

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