ASTROSAT CZTI

Data Quality Report

Orbit 21012

Creation date: 2024-06-27T18:22:31.905983
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/AS1A06_009T03_9000003098_21012cztM0_level2.evt modeM0/AS1A06_009T03_9000003098_21012cztM0_level2_quad_clean.evt
Size (bytes)502,542,720101,018,880
Size479.3 MB 96.3 MB
Events in quadrant A3,223,636659,878
Events in quadrant B3,931,946659,097
Events in quadrant C3,240,789642,235
Events in quadrant D4,353,990616,598

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140711
B0160651
C0140921
D0174421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6918500.722752%
B69181782.572998%
C6918861.243134%
D69192002.890591%

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 7438 6919 0 0 0.00% 0.00%
B 7438 6919 63 63 0.85% 0.91%
C 7438 6919 0 0 0.00% 0.00%
D 7439 6920 148 148 1.99% 2.14%

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 0 226 7248 37.92 837 820 169.5
A 3 137 6931 36.05 837 820 169.5
A 12 194 6074 31.0 837 820 169.5
B 7 220 509589 3214.25 826 803 158.3
B 0 189 75723 473.31 826 803 158.3
B 0 230 29688 182.48 826 803 158.3
C 14 238 123806 650.92 798 807 189.0
C 13 61 5613 25.43 798 807 189.0
C 10 91 2865 10.89 798 807 189.0
D 9 1 826486 4212.71 805 781 196.0
D 15 0 119049 603.4 805 781 196.0
D 13 104 79839 403.35 805 781 196.0

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