ASTROSAT CZTI

Data Quality Report

Orbit 03679

Creation date: 2024-06-27T14:32:24.176052
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/AS1G05_201T01_9000000478_03679cztM0_level2.evt modeM0/AS1G05_201T01_9000000478_03679cztM0_level2_quad_clean.evt
Size (bytes)434,511,36067,608,000
Size414.4 MB 64.5 MB
Events in quadrant A3,015,603411,729
Events in quadrant B4,173,428403,235
Events in quadrant C2,720,865405,974
Events in quadrant D2,832,697398,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132282
B0163961
C0126181
D0130891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6125831.355102%
B61251622.644898%
C6125390.636735%
D6125520.848980%

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 6880 6126 14 14 0.20% 0.23%
B 6880 6126 82 82 1.19% 1.34%
C 6880 6126 0 0 0.00% 0.00%
D 6880 6126 13 13 0.19% 0.21%

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 0 118 135430 916.89 703 686 147.0
A 8 15 50527 339.15 703 686 147.0
A 13 164 40536 271.17 703 686 147.0
B 15 204 735637 5306.84 709 691 138.5
B 3 0 298176 2148.06 709 691 138.5
B 14 167 120533 865.35 709 691 138.5
C 9 247 20775 124.01 688 692 161.9
C 9 144 6179 33.88 688 692 161.9
C 13 61 5813 31.62 688 692 161.9
D 13 223 61040 361.38 688 667 167.1
D 12 221 46429 273.92 688 667 167.1
D 13 239 32022 187.68 688 667 167.1

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
Veto Counter