ASTROSAT CZTI

Data Quality Report

Orbit 35556

Creation date: 2022-04-26T13:41:53.431790
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/AS1A11_093T01_9000005090_35556cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35556cztM0_level2_quad_clean.evt
Size (bytes)449,907,84078,197,760
Size429.1 MB 74.6 MB
Events in quadrant A3,007,348479,434
Events in quadrant B2,966,110497,991
Events in quadrant C3,224,640509,019
Events in quadrant D4,029,824472,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125853
B0126772
C0129302
D0158692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5850100.170940%
B5850560.957265%
C5850631.076923%
D58502354.017094%

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 7224 5851 0 0 0.00% 0.00%
B 7224 5851 20 20 0.28% 0.34%
C 7224 5851 46 46 0.64% 0.79%
D 7224 5851 194 194 2.69% 3.32%

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 15 169 280820 2083.59 662 648 134.5
A 10 83 143269 1060.65 662 648 134.5
A 13 6 15530 110.67 662 648 134.5
B 5 172 281748 2211.04 661 643 127.1
B 0 189 21640 165.15 661 643 127.1
B 4 81 17336 131.3 661 643 127.1
C 0 10 375251 2482.78 653 657 150.9
C 15 214 262891 1738.07 653 657 150.9
C 14 67 30112 195.23 653 657 150.9
D 12 235 447652 2899.25 639 622 154.2
D 13 249 414702 2685.55 639 622 154.2
D 8 195 214609 1387.83 639 622 154.2

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