ASTROSAT CZTI

Data Quality Report

Orbit 20036

Creation date: 2024-06-27T18:10:24.780313
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_180T01_9000002986_20036cztM0_level2.evt modeM0/AS1A05_180T01_9000002986_20036cztM0_level2_quad_clean.evt
Size (bytes)578,615,040117,296,640
Size551.8 MB 111.9 MB
Events in quadrant A3,724,588797,595
Events in quadrant B3,730,662791,899
Events in quadrant C3,655,920762,828
Events in quadrant D5,924,427699,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153853
B0153743
C0150493
D0224473

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7188831.154702%
B71891221.697037%
C71891231.710947%
D718990912.644318%

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 8683 7191 17 17 0.20% 0.24%
B 8684 7192 3 3 0.03% 0.04%
C 8684 7192 2 2 0.02% 0.03%
D 8684 7192 579 579 6.67% 8.05%

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 14 238 80500 419.55 932 916 189.7
A 11 29 26910 137.04 932 916 189.7
A 14 254 23461 118.85 932 916 189.7
B 0 197 56600 310.0 926 904 179.7
B 12 111 20529 109.23 926 904 179.7
B 11 111 17849 94.31 926 904 179.7
C 14 238 140373 661.49 896 904 210.8
C 3 9 9401 40.3 896 904 210.8
C 10 91 6427 26.19 896 904 210.8
D 1 52 2034879 9800.0 853 831 207.6
D 13 249 527115 2535.62 853 831 207.6
D 8 195 139434 667.79 853 831 207.6

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