ASTROSAT CZTI

Data Quality Report

Orbit 20210522_A10_053T17_9000004396_level2

Creation date: 2021-05-24T14:38:40.177387
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_053T17_9000004396cztM0_level2_bc.evt modeM0/AS1A10_053T17_9000004396cztM0_level2_quad_clean.evt
Size (bytes)1,162,175,040293,290,560
Size1.1 GB 279.7 MB
Events in quadrant A5,525,5511,914,795
Events in quadrant B13,017,5851,867,952
Events in quadrant C6,354,2371,748,522
Events in quadrant D8,736,8241,774,345

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494060
B0760900
C0540910
D0594600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229073731.628323%
B2290714206.198978%
C229079194.011874%
D229076382.785175%

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 28742 22906 0 0 0.00% 0.00%
B 28742 22908 18 18 0.06% 0.08%
C 28742 22908 9 9 0.03% 0.04%
D 28742 22908 76 76 0.26% 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 8 192 57770 187.73 1419 1403 300.3
A 13 254 39208 125.91 1419 1403 300.3
A 0 226 9073 25.54 1419 1403 300.3
B 6 159 6034688 23420.85 1386 1362 257.6
B 6 36 1413586 5482.13 1386 1362 257.6
B 0 229 80131 305.77 1386 1362 257.6
C 0 10 546489 1832.78 1290 1290 297.5
C 3 233 406231 1361.28 1290 1290 297.5
C 10 22 385085 1290.19 1290 1290 297.5
D 12 227 1086101 3593.56 1362 1328 301.9
D 7 238 1027333 3398.87 1362 1328 301.9
D 8 195 891626 2949.31 1362 1328 301.9

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