ASTROSAT CZTI

Data Quality Report

Orbit 35189

Creation date: 2022-04-01T19:58:12.409089
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/AS1T05_020T01_9000005050_35189cztM0_level2.evt modeM0/AS1T05_020T01_9000005050_35189cztM0_level2_quad_clean.evt
Size (bytes)3,128,538,240182,407,680
Size2.9 GB 174.0 MB
Events in quadrant A9,727,3961,254,474
Events in quadrant B32,095,358988,026
Events in quadrant C11,189,7951,229,833
Events in quadrant D40,486,806758,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397937
B01082989
C0440415
D01331315

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18703660.352885%
B18702993253.106620%
C187032971.587981%
D187031260167.374218%

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 26297 18708 28 28 0.11% 0.15%
B 26297 18707 6912 6912 26.28% 36.95%
C 26297 18708 205 205 0.78% 1.10%
D 26297 18708 12517 12517 47.60% 66.91%

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 10 83 297093 633.83 2363 2323 465.1
A 7 16 138190 292.15 2363 2323 465.1
A 13 6 70305 146.18 2363 2323 465.1
B 5 236 23993606 69779.74 1839 1795 343.8
B 5 172 484049 1402.63 1839 1795 343.8
B 5 200 94095 268.45 1839 1795 343.8
C 15 214 780673 1514.1 2269 2292 514.1
C 0 10 720080 1396.24 2269 2292 514.1
C 1 23 414769 802.35 2269 2292 514.1
D 7 80 15566122 38665.26 1661 1616 402.5
D 8 195 15537949 38595.27 1661 1616 402.5
D 10 118 698407 1730.96 1661 1616 402.5

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