ASTROSAT CZTI

Data Quality Report

Orbit 18908

Creation date: 2024-06-27T17:56:24.711280
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_163T01_9000002820_18908cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18908cztM0_level2_quad_clean.evt
Size (bytes)855,449,28075,977,280
Size815.8 MB 72.5 MB
Events in quadrant A11,288,274322,809
Events in quadrant B6,099,041481,622
Events in quadrant C3,906,281484,769
Events in quadrant D4,094,289476,052

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387502
B0231312
C0162482
D0173142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7687342444.542734%
B768688611.527453%
C76861491.938590%
D76861151.496227%

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 7887 7688 2386 2386 30.25% 31.04%
B 7886 7687 514 514 6.52% 6.69%
C 7886 7687 0 0 0.00% 0.00%
D 7886 7687 23 23 0.29% 0.30%

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 14 235 8366284 55758.04 737 722 150.0
A 15 174 61122 402.57 737 722 150.0
A 5 247 13013 81.92 737 722 150.0
B 3 112 2049915 11608.96 907 883 176.5
B 7 220 331552 1873.43 907 883 176.5
B 4 216 80206 449.41 907 883 176.5
C 14 238 138327 637.18 914 919 215.7
C 3 233 119149 548.25 914 919 215.7
C 9 15 65271 298.41 914 919 215.7
D 7 238 202735 882.36 930 900 228.7
D 1 52 146137 634.93 930 900 228.7
D 12 110 72632 313.59 930 900 228.7

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