ASTROSAT CZTI

Data Quality Report

Orbit 20964

Creation date: 2024-06-27T18:21:50.671723
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/AS1T03_131T01_9000003090_20964cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20964cztM0_level2_quad_clean.evt
Size (bytes)529,804,80094,806,720
Size505.3 MB 90.4 MB
Events in quadrant A3,837,316585,015
Events in quadrant B3,976,559595,849
Events in quadrant C3,818,059583,821
Events in quadrant D3,886,874567,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164392
B0166332
C0162562
D0167112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77463404.389362%
B77463554.583011%
C77463804.905758%
D77453104.002582%

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 8291 7748 18 18 0.22% 0.23%
B 8291 7748 9 9 0.11% 0.12%
C 8291 7748 1 1 0.01% 0.01%
D 8290 7747 21 21 0.25% 0.27%

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 5 16 119983 607.61 966 944 195.9
A 0 226 8441 38.27 966 944 195.9
A 3 137 8095 36.5 966 944 195.9
B 3 64 83251 447.2 964 937 184.1
B 0 245 27704 145.42 964 937 184.1
B 4 216 24582 128.46 964 937 184.1
C 14 238 145888 662.88 932 936 218.7
C 9 54 26424 116.56 932 936 218.7
C 10 91 10682 44.57 932 936 218.7
D 7 223 79082 337.05 945 915 231.9
D 5 222 60140 255.37 945 915 231.9
D 1 52 43524 183.73 945 915 231.9

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