ASTROSAT CZTI

Data Quality Report

Orbit 23165

Creation date: 2024-06-27T18:50:46.125509
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/AS1A08_009T01_9000003422_23165cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23165cztM0_level2_quad_clean.evt
Size (bytes)473,506,560109,719,360
Size451.6 MB 104.6 MB
Events in quadrant A3,276,106704,665
Events in quadrant B3,389,123721,781
Events in quadrant C3,802,718695,855
Events in quadrant D3,372,125688,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148991
B0150761
C0161211
D0154311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7362170.230916%
B7363290.393861%
C7363911.235909%
D7362240.325998%

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 7702 7363 0 0 0.00% 0.00%
B 7703 7364 1 1 0.01% 0.01%
C 7703 7364 2 2 0.03% 0.03%
D 7702 7363 18 18 0.23% 0.24%

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 9656 51.39 849 831 171.7
A 3 137 7677 39.87 849 831 171.7
A 0 226 7169 36.91 849 831 171.7
B 12 111 20203 120.79 847 826 160.4
B 11 111 17994 107.02 847 826 160.4
B 14 111 15724 92.87 847 826 160.4
C 0 10 465705 2452.47 811 815 189.6
C 14 238 127805 669.92 811 815 189.6
C 8 208 42561 220.23 811 815 189.6
D 1 52 115741 573.65 824 797 200.4
D 10 199 71752 354.12 824 797 200.4
D 2 234 30322 147.35 824 797 200.4

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