ASTROSAT CZTI

Data Quality Report

Orbit 18663

Creation date: 2024-06-27T17:53:07.700491
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/AS1A06_005T01_9000002788_18663cztM0_level2.evt modeM0/AS1A06_005T01_9000002788_18663cztM0_level2_quad_clean.evt
Size (bytes)876,896,640112,826,880
Size836.3 MB 107.6 MB
Events in quadrant A3,876,311808,982
Events in quadrant B3,952,394822,924
Events in quadrant C4,024,211778,825
Events in quadrant D14,145,048430,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170023
B0171373
C0173463
D0477533

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8258570.690240%
B82591231.489284%
C82591441.743552%
D8259414650.199782%

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 8893 8261 0 0 0.00% 0.00%
B 8894 8262 7 7 0.08% 0.08%
C 8894 8261 3 3 0.03% 0.04%
D 8893 8258 3915 3915 44.02% 47.41%

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 15 192 66396 329.5 979 958 198.6
A 6 16 30142 146.95 979 958 198.6
A 13 254 13071 60.99 979 958 198.6
B 4 80 64505 341.05 980 954 186.3
B 12 111 22850 117.51 980 954 186.3
B 0 189 21204 108.67 980 954 186.3
C 3 233 199182 904.36 936 941 219.2
C 14 238 144667 655.67 936 941 219.2
C 9 221 25536 112.2 936 941 219.2
D 7 238 11513640 72723.4 654 634 158.3
D 1 52 135212 850.08 654 634 158.3
D 2 234 24453 150.46 654 634 158.3

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