ASTROSAT CZTI

Data Quality Report

Orbit 47682

Creation date: 2024-07-22T23:55:14.365048
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/AS1A13_082T01_9000006342_47682cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47682cztM0_level2_quad_clean.evt
Size (bytes)566,976,960124,508,160
Size540.7 MB 118.7 MB
Events in quadrant A8,229,982791,252
Events in quadrant B4,184,251832,438
Events in quadrant C3,641,132836,781
Events in quadrant D4,323,342763,226

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300451
B0175871
C0166331
D0185271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78505867.464968%
B78513864.916571%
C7851680.866132%
D78511872.381862%

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 7850 7850 9 9 0.11% 0.11%
B 7851 7851 56 56 0.71% 0.71%
C 7851 7851 4 4 0.05% 0.05%
D 7851 7851 55 55 0.70% 0.70%

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 10 83 4416581 22458.14 929 908 196.6
A 9 191 191266 968.16 929 908 196.6
A 13 248 24377 119.36 929 908 196.6
B 0 200 148807 789.43 932 902 187.4
B 5 32 115554 611.95 932 902 187.4
B 0 190 115367 610.95 932 902 187.4
C 14 254 39319 174.52 920 923 220.0
C 12 250 9594 39.41 920 923 220.0
C 13 61 6134 23.69 920 923 220.0
D 10 181 294703 1273.83 925 897 230.6
D 2 249 89650 384.8 925 897 230.6
D 10 234 87101 373.75 925 897 230.6

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