ASTROSAT CZTI

Data Quality Report

Orbit 35621

Creation date: 2022-05-02T05:47:50.066982
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/AS1A10_065T04_9000005098_35621cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35621cztM0_level2_quad_clean.evt
Size (bytes)1,272,430,08053,196,480
Size1.2 GB 50.7 MB
Events in quadrant A6,303,489189,338
Events in quadrant B8,026,274193,701
Events in quadrant C7,493,259192,126
Events in quadrant D15,827,898127,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285821631
B0337351409
C0312521332
D0594223650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02799
B02806
C02784
D02809

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13108110.083918%
B131334383.335110%
C131312742.086665%
D12993356127.407065%

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 16487 13266 0 0 0.00% 0.00%
B 16487 13302 277 277 1.68% 2.08%
C 16487 13297 216 216 1.31% 1.62%
D 16487 13133 2856 2856 17.32% 21.75%

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 234967 767.96 1509 1478 304.0
A 15 169 193771 632.47 1509 1478 304.0
A 13 6 21979 67.43 1509 1478 304.0
B 5 172 1988054 6894.54 1487 1447 288.1
B 0 190 43940 147.47 1487 1447 288.1
B 5 200 40219 134.56 1487 1447 288.1
C 0 10 673147 1965.25 1458 1465 341.8
C 15 214 529456 1544.83 1458 1465 341.8
C 1 23 465842 1358.7 1458 1465 341.8
D 7 80 9510037 31244.25 1235 1198 304.3
D 12 233 357278 1170.01 1235 1198 304.3
D 13 249 277079 906.49 1235 1198 304.3

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