ASTROSAT CZTI

Data Quality Report

Orbit 32791

Creation date: 2024-06-27T20:42:03.789677
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/AS1T04_064T01_9000004730_32791cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32791cztM0_level2_quad_clean.evt
Size (bytes)688,394,88077,967,360
Size656.5 MB 74.4 MB
Events in quadrant A4,805,794462,674
Events in quadrant B3,753,817512,256
Events in quadrant C3,216,235514,496
Events in quadrant D8,669,418453,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180033
B0149422
C0135322
D0298812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596278813.217041%
B59622193.673264%
C59621061.777927%
D5962100516.856759%

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 7306 5963 529 529 7.24% 8.87%
B 7306 5963 120 120 1.64% 2.01%
C 7306 5963 73 73 1.00% 1.22%
D 7306 5963 996 996 13.63% 16.70%

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 15 237 2152226 15986.07 660 648 134.6
A 7 16 36762 268.32 660 648 134.6
A 14 238 16408 117.1 660 648 134.6
B 5 172 523582 3855.97 698 683 135.6
B 0 219 312216 2297.31 698 683 135.6
B 12 1 43896 318.66 698 683 135.6
C 0 10 374202 2386.36 673 678 156.5
C 3 233 136233 866.03 673 678 156.5
C 15 159 19525 120.41 673 678 156.5
D 8 195 2428046 14675.3 641 624 165.4
D 10 203 895953 5412.83 641 624 165.4
D 12 6 655217 3957.43 641 624 165.4

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