ASTROSAT CZTI

Data Quality Report

Orbit 14465

Creation date: 2024-06-27T16:55:33.317831
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_025T01_9000002130_14465cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14465cztM0_level2_quad_clean.evt
Size (bytes)531,861,12095,068,800
Size507.2 MB 90.7 MB
Events in quadrant A3,580,721598,096
Events in quadrant B3,917,108591,404
Events in quadrant C4,205,847579,246
Events in quadrant D3,887,230580,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155652
B0163621
C0173151
D0167501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76081341.761304%
B76081501.971609%
C76081161.524711%
D76081542.024185%

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 7804 7610 0 0 0.00% 0.00%
B 7804 7610 6 6 0.08% 0.08%
C 7804 7610 0 0 0.00% 0.00%
D 7804 7610 42 42 0.54% 0.55%

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 12 189 40420 212.25 912 890 186.2
A 8 15 19538 100.13 912 890 186.2
A 0 226 8102 38.72 912 890 186.2
B 0 219 124144 707.51 905 884 174.2
B 0 189 50962 287.45 905 884 174.2
B 15 222 50443 284.47 905 884 174.2
C 3 233 781939 3837.99 875 878 203.5
C 14 234 7400 32.05 875 878 203.5
C 13 61 6405 27.16 875 878 203.5
D 2 120 202062 954.57 878 857 210.8
D 12 110 165551 781.35 878 857 210.8
D 10 199 89833 422.13 878 857 210.8

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