ASTROSAT CZTI

Data Quality Report

Orbit 43650

Creation date: 2024-06-27T22:54:05.351894
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/AS1A12_068T05_9000005894_43650cztM0_level2.fits modeM0/AS1A12_068T05_9000005894_43650cztM0_level2_quad_clean.evt
Size (bytes)1,000,131,84077,702,400
Size953.8 MB 74.1 MB
Events in quadrant A4,251,725678,142
Events in quadrant B4,301,220671,630
Events in quadrant C14,366,588311,659
Events in quadrant D13,641,132269,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165721
B0170051
C0467721
D0444839

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59702754.606365%
B59705078.492462%
C5970523887.738693%
D5969443574.300553%

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 6920 5971 168 168 2.43% 2.81%
B 6920 5970 281 281 4.06% 4.71%
C 6920 5970 5087 5087 73.51% 85.21%
D 6919 5969 4436 4436 64.11% 74.32%

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 10 83 780081 5588.81 672 656 139.5
A 15 223 565418 4049.58 672 656 139.5
A 15 222 102004 726.71 672 656 139.5
B 12 32 944200 7364.19 657 635 128.1
B 4 206 227102 1767.49 657 635 128.1
B 5 235 185989 1446.62 657 635 128.1
C 15 142 10273720 133047.1 328 328 77.2
C 3 233 1021255 13221.67 328 328 77.2
C 15 157 753550 9754.71 328 328 77.2
D 8 192 9407237 113603.51 305 294 82.8
D 12 6 1473834 17795.29 305 294 82.8
D 14 210 221877 2675.96 305 294 82.8

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