ASTROSAT CZTI

Data Quality Report

Orbit 17876

Creation date: 2024-06-27T17:42:06.025590
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/AS1T03_075T01_9000002660_17876cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17876cztM0_level2_quad_clean.evt
Size (bytes)437,829,12099,195,840
Size417.5 MB 94.6 MB
Events in quadrant A3,174,995644,267
Events in quadrant B3,315,984669,056
Events in quadrant C3,262,193636,629
Events in quadrant D3,087,086623,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134422
B0138992
C0136262
D0133322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6170751.215559%
B61691021.653428%
C61691452.350462%
D6170570.923825%

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 8925 6172 2 2 0.02% 0.03%
B 8924 6171 3 3 0.03% 0.05%
C 8924 6171 0 0 0.00% 0.00%
D 8925 6172 4 4 0.04% 0.06%

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 4 2 22198 129.53 816 800 165.2
A 14 237 10922 61.27 816 800 165.2
A 0 226 7067 37.94 816 800 165.2
B 0 189 21636 134.19 826 810 155.2
B 12 111 18304 112.72 826 810 155.2
B 11 111 15806 96.62 826 810 155.2
C 14 238 124912 674.38 795 803 184.0
C 3 233 23789 124.9 795 803 184.0
C 5 218 7712 37.54 795 803 184.0
D 7 238 22767 104.73 795 778 209.9
D 2 234 22318 102.6 795 778 209.9
D 13 172 17422 79.28 795 778 209.9

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