ASTROSAT CZTI

Data Quality Report

Orbit 27992

Creation date: 2024-06-27T19:46:49.413865
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_065T03_9000004040_27992cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27992cztM0_level2_quad_clean.evt
Size (bytes)502,770,24068,031,360
Size479.5 MB 64.9 MB
Events in quadrant A3,354,117416,558
Events in quadrant B3,435,076419,108
Events in quadrant C3,663,702395,799
Events in quadrant D4,346,876389,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138350
B0141540
C0149570
D0170100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6290420.667727%
B6290651.033386%
C62901572.496025%
D62902524.006359%

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 7495 6290 2 2 0.03% 0.03%
B 7495 6290 1 1 0.01% 0.02%
C 7495 6290 10 10 0.13% 0.16%
D 7495 6290 198 198 2.64% 3.15%

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 8 192 10295 55.43 866 853 170.3
A 13 254 8481 44.78 866 853 170.3
A 3 137 7923 41.51 866 853 170.3
B 10 245 21908 128.91 867 848 163.4
B 12 111 20168 118.26 867 848 163.4
B 11 111 18157 105.95 867 848 163.4
C 3 233 169696 861.25 844 853 196.0
C 14 238 137335 696.18 844 853 196.0
C 2 16 64465 324.48 844 853 196.0
D 1 52 932464 4743.36 834 817 196.4
D 8 195 228929 1161.4 834 817 196.4
D 7 223 45194 225.94 834 817 196.4

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