ASTROSAT CZTI

Data Quality Report

Orbit 11305

Creation date: 2024-06-27T16:11:02.614897
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/AS1A04_144T01_9000001652_11305cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11305cztM0_level2_quad_clean.evt
Size (bytes)660,067,20094,302,720
Size629.5 MB 89.9 MB
Events in quadrant A4,559,000613,721
Events in quadrant B5,868,393602,587
Events in quadrant C3,182,022644,578
Events in quadrant D5,933,535533,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179323
B0219222
C0138932
D0221172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66054106.207419%
B6605116817.683573%
C6605701.059803%
D660592213.959122%

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 9155 6607 261 261 2.85% 3.95%
B 9155 6607 615 615 6.72% 9.31%
C 9155 6607 0 0 0.00% 0.00%
D 9155 6607 719 719 7.85% 10.88%

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 1384577 8450.94 804 788 163.7
A 1 162 19175 112.29 804 788 163.7
A 13 251 12864 73.75 804 788 163.7
B 3 64 1492310 10135.38 777 761 147.2
B 4 239 1145968 7781.92 777 761 147.2
B 3 189 96386 649.79 777 761 147.2
C 13 61 6120 27.99 814 818 189.4
C 9 204 4960 21.86 814 818 189.4
C 14 234 2736 10.12 814 818 189.4
D 10 253 2407362 13635.3 735 714 176.5
D 1 52 186112 1050.41 735 714 176.5
D 8 195 167631 945.7 735 714 176.5

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