ASTROSAT CZTI

Data Quality Report

Orbit 09171

Creation date: 2024-06-27T15:42:15.292251
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/AS1C02_027T01_9000001280_09171cztM0_level2.evt modeM0/AS1C02_027T01_9000001280_09171cztM0_level2_quad_clean.evt
Size (bytes)506,378,880121,023,360
Size482.9 MB 115.4 MB
Events in quadrant A3,951,433809,524
Events in quadrant B4,322,547804,114
Events in quadrant C2,919,488806,040
Events in quadrant D3,687,995779,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161043
B0173422
C0135412
D0157562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66971682.508586%
B66972553.807675%
C6697250.373301%
D66971862.777363%

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 7657 6698 97 97 1.27% 1.45%
B 7657 6698 151 151 1.97% 2.25%
C 7657 6698 0 0 0.00% 0.00%
D 7657 6698 151 151 1.97% 2.25%

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 8 5 522628 3309.43 770 752 157.7
A 15 223 246518 1558.5 770 752 157.7
A 15 239 108102 680.75 770 752 157.7
B 8 234 1172028 7977.31 769 752 146.8
B 0 85 52519 352.57 769 752 146.8
B 0 229 22663 149.23 769 752 146.8
C 13 61 5863 29.97 745 746 170.7
C 8 128 4757 23.5 745 746 170.7
C 8 222 4112 19.72 745 746 170.7
D 1 52 597813 3037.93 732 714 196.5
D 2 14 97074 490.26 732 714 196.5
D 13 169 60079 302.04 732 714 196.5

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