ASTROSAT CZTI

Data Quality Report

Orbit 03491

Creation date: 2024-06-27T14:29:41.818460
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_211T01_9000000464_03491cztM0_level2.evt modeM0/AS1G05_211T01_9000000464_03491cztM0_level2_quad_clean.evt
Size (bytes)496,264,32080,663,040
Size473.3 MB 76.9 MB
Events in quadrant A3,773,665492,414
Events in quadrant B3,525,033496,236
Events in quadrant C4,233,030485,416
Events in quadrant D3,023,733482,346

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162343
B0152332
C0176402
D0145412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69751622.322581%
B6975330.473118%
C69753444.931900%
D6975280.401434%

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 7695 6976 144 144 1.87% 2.06%
B 7695 6976 12 12 0.16% 0.17%
C 7695 6976 318 318 4.13% 4.56%
D 7695 6976 21 21 0.27% 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 0 50 800241 5061.52 767 749 158.0
A 0 118 11705 69.36 767 749 158.0
A 0 226 8836 51.2 767 749 158.0
B 15 204 298750 1961.38 783 765 151.9
B 4 81 96848 632.43 783 765 151.9
B 2 249 30882 198.23 783 765 151.9
C 7 220 1283870 7398.73 742 746 173.4
C 1 192 10169 54.33 742 746 173.4
C 15 208 8333 43.75 742 746 173.4
D 13 223 106336 574.96 750 726 183.7
D 13 239 44165 236.49 750 726 183.7
D 4 160 16639 86.63 750 726 183.7

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
Veto Counter