ASTROSAT CZTI

Data Quality Report

Orbit 10931

Creation date: 2024-06-27T16:05:50.579197
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/AS1G08_039T01_9000001582_10931cztM0_level2.evt modeM0/AS1G08_039T01_9000001582_10931cztM0_level2_quad_clean.evt
Size (bytes)530,308,80091,552,320
Size505.7 MB 87.3 MB
Events in quadrant A4,093,688575,236
Events in quadrant B4,617,144584,666
Events in quadrant C3,038,616584,562
Events in quadrant D3,847,918552,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167222
B0181331
C0139451
D0159761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68282593.793204%
B68283324.862332%
C6828100.146456%
D6828901.318102%

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 7338 6829 175 175 2.38% 2.56%
B 7338 6829 200 200 2.73% 2.93%
C 7338 6829 0 0 0.00% 0.00%
D 7338 6829 77 77 1.05% 1.13%

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 15 223 653007 3970.96 795 778 164.2
A 15 239 150486 911.46 795 778 164.2
A 8 5 110386 667.32 795 778 164.2
B 4 239 1141593 7460.53 800 782 152.9
B 15 204 200697 1307.38 800 782 152.9
B 4 81 64427 416.22 800 782 152.9
C 7 205 6976 34.48 775 779 179.7
C 13 61 5888 28.42 775 779 179.7
C 14 234 4498 20.69 775 779 179.7
D 8 195 405738 2151.54 771 748 188.2
D 13 152 236668 1253.34 771 748 188.2
D 5 222 77403 407.24 771 748 188.2

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