ASTROSAT CZTI

Data Quality Report

Orbit 03700

Creation date: 2024-06-27T14:32:35.200177
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/AS1G05_009T01_9000000482_03700cztM0_level2.evt modeM0/AS1G05_009T01_9000000482_03700cztM0_level2_quad_clean.evt
Size (bytes)519,742,08064,923,840
Size495.7 MB 61.9 MB
Events in quadrant A4,387,972364,237
Events in quadrant B3,572,071389,787
Events in quadrant C2,931,855384,155
Events in quadrant D4,398,098364,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175202
B0148561
C0134481
D0178471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66343935.924028%
B6634650.979801%
C6634180.271330%
D66342403.617727%

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 7589 6635 317 317 4.18% 4.78%
B 7589 6635 13 13 0.17% 0.20%
C 7589 6635 5 5 0.07% 0.08%
D 7589 6635 209 209 2.75% 3.15%

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 13 251 1392862 9115.24 738 722 152.7
A 13 164 112663 732.95 738 722 152.7
A 3 1 13177 81.55 738 722 152.7
B 15 204 183615 1211.18 771 751 151.0
B 0 173 130623 860.19 771 751 151.0
B 0 219 106410 699.82 771 751 151.0
C 1 16 28625 159.64 740 743 174.7
C 2 53 9928 52.59 740 743 174.7
C 13 61 6300 31.82 740 743 174.7
D 9 35 1361231 7758.96 726 707 175.3
D 13 239 115859 656.7 726 707 175.3
D 1 84 55657 313.37 726 707 175.3

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
Veto Counter