ASTROSAT CZTI

Data Quality Report

Orbit 16188

Creation date: 2024-06-27T17:19:07.893340
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/AS1T02_109T01_9000002386_16188cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16188cztM0_level2_quad_clean.evt
Size (bytes)542,790,72096,301,440
Size517.6 MB 91.8 MB
Events in quadrant A3,879,564606,858
Events in quadrant B3,781,562615,984
Events in quadrant C4,212,489590,971
Events in quadrant D4,053,110578,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166853
B0162212
C0173382
D0173712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75461862.464882%
B75461241.643255%
C75462553.379274%
D75462373.140737%

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 8242 7549 58 58 0.70% 0.77%
B 8242 7549 2 2 0.02% 0.03%
C 8242 7549 52 52 0.63% 0.69%
D 8242 7549 182 182 2.21% 2.41%

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 15 174 317247 1711.31 907 888 184.9
A 8 247 34587 182.29 907 888 184.9
A 3 1 20916 108.34 907 888 184.9
B 4 216 53695 299.15 916 891 176.5
B 3 209 50193 279.31 916 891 176.5
B 0 189 25292 138.24 916 891 176.5
C 7 247 362795 1767.88 871 878 204.7
C 3 233 232030 1129.12 871 878 204.7
C 14 238 132546 643.17 871 878 204.7
D 12 221 499864 2285.56 878 851 218.3
D 10 70 101277 459.97 878 851 218.3
D 1 52 54212 244.4 878 851 218.3

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