ASTROSAT CZTI

Data Quality Report

Orbit 12827

Creation date: 2024-06-27T16:32:50.246281
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_071T01_9000001888_12827cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12827cztM0_level2_quad_clean.evt
Size (bytes)532,846,08096,816,960
Size508.2 MB 92.3 MB
Events in quadrant A3,930,478625,868
Events in quadrant B5,279,346575,750
Events in quadrant C3,190,519632,660
Events in quadrant D3,261,493609,543

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160842
B0203821
C0142551
D0146101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7005410.585296%
B700579511.349036%
C7005420.599572%
D7005360.513919%

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 7606 7007 0 0 0.00% 0.00%
B 7606 7007 525 525 6.90% 7.49%
C 7606 7007 0 0 0.00% 0.00%
D 7606 7007 8 8 0.11% 0.11%

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 15 222 656613 3874.82 836 815 169.2
A 12 189 62596 365.04 836 815 169.2
A 0 226 7305 38.35 836 815 169.2
B 4 239 1998218 13406.79 785 766 149.0
B 0 219 130722 872.26 785 766 149.0
B 0 214 21730 140.71 785 766 149.0
C 13 61 6109 28.0 818 821 188.9
C 3 202 2052 6.52 818 821 188.9
C 8 222 1795 5.16 818 821 188.9
D 1 52 97808 459.78 808 789 211.0
D 13 104 50822 237.11 808 789 211.0
D 2 234 25369 116.49 808 789 211.0

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