ASTROSAT CZTI

Data Quality Report

Orbit 20220207_A05_108T02_9000004914_level2

Creation date: 2022-02-09T12:57:48.600440
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/AS1A05_108T02_9000004914cztM0_level2_bc.evt modeM0/AS1A05_108T02_9000004914cztM0_level2_quad_clean.evt
Size (bytes)3,240,599,040892,569,600
Size3.0 GB 851.2 MB
Events in quadrant A14,884,0835,759,818
Events in quadrant B20,471,1105,769,659
Events in quadrant C21,421,8085,688,019
Events in quadrant D36,857,2145,269,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013540
B013540
C013540
D013540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01377450
B01626510
C01544080
D02153830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A663342090.315072%
B6633422333.366298%
C663348291.249736%
D6633440626.123557%

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 92626 66343 27 27 0.03% 0.04%
B 92626 66335 196 196 0.21% 0.30%
C 92626 66335 363 363 0.39% 0.55%
D 92626 66333 996 996 1.08% 1.50%

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 9 143 514118 657.1 3585 3538 777.0
A 10 83 281745 358.04 3585 3538 777.0
A 13 6 130692 163.64 3585 3538 777.0
B 5 172 3876723 5528.22 3566 3496 700.6
B 0 229 981838 1396.38 3566 3496 700.6
B 0 190 863883 1228.02 3566 3496 700.6
C 4 254 2978134 3761.5 3498 3479 790.8
C 15 214 2622144 3311.34 3498 3479 790.8
C 14 67 1195444 1507.26 3498 3479 790.8
D 8 195 9822101 11981.22 3429 3322 819.5
D 2 249 2431682 2963.17 3429 3322 819.5
D 10 230 2270241 2766.17 3429 3322 819.5

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