ASTROSAT CZTI

Data Quality Report

Orbit 16995

Creation date: 2024-06-27T17:30:25.982738
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/AS1A05_143T01_9000002524_16995cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16995cztM0_level2_quad_clean.evt
Size (bytes)554,869,44080,550,720
Size529.2 MB 76.8 MB
Events in quadrant A2,870,014517,927
Events in quadrant B3,276,737527,843
Events in quadrant C3,335,153508,332
Events in quadrant D6,911,638461,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123601
B0134691
C0135711
D0245591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6055590.974401%
B60561061.750330%
C6056841.387054%
D6056137622.721268%

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 7006 6057 0 0 0.00% 0.00%
B 7007 6058 37 37 0.53% 0.61%
C 7007 6058 0 0 0.00% 0.00%
D 7007 6058 1124 1124 16.04% 18.55%

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 0 226 6495 37.97 745 729 151.8
A 12 194 5505 31.45 745 729 151.8
A 3 137 5080 28.66 745 729 151.8
B 7 220 93790 656.83 739 721 141.7
B 0 229 86936 608.46 739 721 141.7
B 0 197 53345 371.39 739 721 141.7
C 3 233 401992 2371.05 722 729 169.2
C 14 238 110609 649.28 722 729 169.2
C 13 61 5108 25.88 722 729 169.2
D 1 52 4205379 26365.66 659 639 159.5
D 2 152 85966 535.04 659 639 159.5
D 12 110 82183 511.32 659 639 159.5

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