ASTROSAT CZTI

Data Quality Report

Orbit 23001

Creation date: 2024-06-27T18:48:32.904437
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/AS1A08_004T03_9000003400_23001cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_23001cztM0_level2_quad_clean.evt
Size (bytes)446,958,72059,333,760
Size426.3 MB 56.6 MB
Events in quadrant A3,136,275349,912
Events in quadrant B3,301,316358,245
Events in quadrant C3,211,291337,952
Events in quadrant D3,474,782326,137

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127481
B0133411
C0130641
D0141481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6078170.279697%
B6078390.641658%
C6078731.201053%
D6078821.349128%

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 7443 6079 0 0 0.00% 0.00%
B 7443 6079 3 3 0.04% 0.05%
C 7443 6079 0 0 0.00% 0.00%
D 7443 6079 54 54 0.73% 0.89%

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 17 19030 114.18 807 796 159.7
A 13 254 9252 52.95 807 796 159.7
A 0 226 6975 38.69 807 796 159.7
B 0 189 106456 696.77 810 792 151.6
B 4 216 19427 122.88 810 792 151.6
B 12 111 17853 112.5 810 792 151.6
C 14 238 124864 697.47 771 780 177.9
C 7 247 66991 372.17 771 780 177.9
C 0 10 15004 79.95 771 780 177.9
D 1 52 259588 1375.68 773 751 188.2
D 13 153 171987 910.1 773 751 188.2
D 12 227 64197 337.21 773 751 188.2

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