ASTROSAT CZTI

Data Quality Report

Orbit 02465

Creation date: 2024-06-27T14:18:10.179912
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/AS1G02_018T06_9000000370_02465cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02465cztM0_level2_quad_clean.evt
Size (bytes)468,069,12094,181,760
Size446.4 MB 89.8 MB
Events in quadrant A3,346,389578,914
Events in quadrant B3,468,152597,754
Events in quadrant C3,363,624593,398
Events in quadrant D3,499,954572,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151752
B0153431
C0152611
D0158111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7317741.011343%
B7317881.202679%
C7317350.478338%
D7317540.738007%

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 7337 7318 0 0 0.00% 0.00%
B 7337 7318 1 1 0.01% 0.01%
C 7337 7318 0 0 0.00% 0.00%
D 7337 7318 24 24 0.33% 0.33%

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 12 194 9887 50.49 865 845 179.1
A 0 226 9219 46.76 865 845 179.1
A 14 63 7255 35.79 865 845 179.1
B 15 85 34878 199.4 877 853 170.6
B 4 48 15792 87.55 877 853 170.6
B 4 200 12683 69.33 877 853 170.6
C 14 223 51948 258.71 838 841 197.5
C 10 82 12325 58.13 838 841 197.5
C 8 112 9445 43.55 838 841 197.5
D 7 67 172101 863.23 831 808 198.4
D 2 14 74062 369.16 831 808 198.4
D 5 172 35444 174.55 831 808 198.4

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