ASTROSAT CZTI

Data Quality Report

Orbit 31661

Creation date: 2024-06-27T20:31:14.490331
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_056T01_9000004626_31661cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31661cztM0_level2_quad_clean.evt
Size (bytes)606,816,000111,251,520
Size578.7 MB 106.1 MB
Events in quadrant A3,502,947725,938
Events in quadrant B5,901,117727,270
Events in quadrant C4,389,724696,329
Events in quadrant D4,071,543693,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155822
B0234462
C0179392
D0171762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7563851.123893%
B75632593.424567%
C75632763.649345%
D7563761.004892%

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 7753 7564 0 0 0.00% 0.00%
B 7753 7564 31 31 0.40% 0.41%
C 7753 7564 22 22 0.28% 0.29%
D 7753 7564 12 12 0.15% 0.16%

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 13 254 12237 62.44 906 887 181.8
A 3 137 9579 47.82 906 887 181.8
A 0 226 7584 36.84 906 887 181.8
B 6 159 2048110 11634.28 900 874 176.0
B 4 80 217591 1231.59 900 874 176.0
B 0 190 45130 251.5 900 874 176.0
C 3 233 558161 2733.8 867 870 203.9
C 0 10 211973 1035.57 867 870 203.9
C 14 238 140344 684.19 867 870 203.9
D 8 195 646038 3110.78 877 855 207.4
D 2 250 56369 267.66 877 855 207.4
D 2 234 30221 141.59 877 855 207.4

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