ASTROSAT CZTI

Data Quality Report

Orbit 30218

Creation date: 2024-06-27T20:13:15.985185
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/AS1A10_071T16_9000004348_30218cztM0_level2.evt modeM0/AS1A10_071T16_9000004348_30218cztM0_level2_quad_clean.evt
Size (bytes)554,448,960102,568,320
Size528.8 MB 97.8 MB
Events in quadrant A3,348,701669,962
Events in quadrant B5,189,671670,407
Events in quadrant C3,534,103643,203
Events in quadrant D4,248,699639,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144331
B0209471
C0148331
D0172301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6946831.194932%
B69471271.828127%
C69471371.972074%
D6947871.252339%

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 7766 6946 0 0 0.00% 0.00%
B 7767 6947 1 1 0.01% 0.01%
C 7767 6947 2 2 0.03% 0.03%
D 7767 6947 12 12 0.15% 0.17%

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 13 254 12542 67.02 864 847 174.5
A 8 192 11842 63.01 864 847 174.5
A 3 137 9047 46.99 864 847 174.5
B 6 159 1822498 10959.13 850 825 166.2
B 12 111 21119 122.09 850 825 166.2
B 11 111 19742 113.8 850 825 166.2
C 14 238 133077 675.21 828 833 195.9
C 3 233 103816 525.81 828 833 195.9
C 15 208 48166 241.67 828 833 195.9
D 12 227 321462 1578.03 836 815 203.2
D 7 223 318123 1561.6 836 815 203.2
D 8 195 241105 1182.56 836 815 203.2

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