ASTROSAT CZTI

Data Quality Report

Orbit 21351

Creation date: 2024-06-27T18:26:40.060739
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_041T01_9000003150_21351cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21351cztM0_level2_quad_clean.evt
Size (bytes)619,971,84089,179,200
Size591.3 MB 85.0 MB
Events in quadrant A3,566,806594,414
Events in quadrant B3,400,139602,822
Events in quadrant C4,433,833567,283
Events in quadrant D6,954,077501,754

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146032
B0140742
C0174753
D0249932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6216991.592664%
B62161322.123552%
C62153034.875302%
D6215188130.265487%

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 7501 6216 0 0 0.00% 0.00%
B 7501 6216 3 3 0.04% 0.05%
C 7500 6215 95 95 1.27% 1.53%
D 7500 6215 1456 1456 19.41% 23.43%

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 229933 1354.82 853 839 169.1
A 5 168 47117 273.68 853 839 169.1
A 13 254 8674 46.33 853 839 169.1
B 0 197 49236 305.59 843 823 158.4
B 0 230 27014 165.32 843 823 158.4
B 3 64 19996 121.02 843 823 158.4
C 3 233 952970 5051.36 815 824 188.5
C 10 23 165728 874.85 815 824 188.5
C 14 238 127591 672.53 815 824 188.5
D 1 52 1847891 10263.36 748 729 180.0
D 13 174 1154348 6409.84 748 729 180.0
D 7 238 890260 4942.49 748 729 180.0

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