ASTROSAT CZTI

Data Quality Report

Orbit 09064

Creation date: 2024-06-27T15:40:47.676838
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/AS1A03_046T01_9000001260_09064cztM0_level2.evt modeM0/AS1A03_046T01_9000001260_09064cztM0_level2_quad_clean.evt
Size (bytes)1,230,145,920237,672,000
Size1.1 GB 226.7 MB
Events in quadrant A9,104,7121,514,786
Events in quadrant B9,292,9061,521,927
Events in quadrant C7,896,1621,516,912
Events in quadrant D9,790,5501,452,482

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036614
B036624
C036612
D03666

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221
B0220
C0220
D0223

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395961665
B0405471625
C0370741356
D0429942432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172925062.926209%
B173445643.251845%
C173614052.332815%
D171746353.697450%

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 20158 17866 10 10 0.05% 0.06%
B 20158 17873 33 33 0.16% 0.18%
C 20158 17905 4 4 0.02% 0.02%
D 20158 17842 197 197 0.98% 1.10%

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 5 968713 2346.88 2061 2015 411.9
A 1 162 52759 123.19 2061 2015 411.9
A 5 16 44344 102.76 2061 2015 411.9
B 10 16 959250 2478.66 2069 2016 386.2
B 4 48 57582 143.88 2069 2016 386.2
B 0 219 54250 135.25 2069 2016 386.2
C 13 61 15415 29.22 2017 2021 458.4
C 14 234 11777 21.28 2017 2021 458.4
C 12 4 11037 19.67 2017 2021 458.4
D 1 52 993106 1934.83 1982 1929 512.3
D 2 14 422280 820.55 1982 1929 512.3
D 12 233 290861 564.01 1982 1929 512.3

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