ASTROSAT CZTI

Data Quality Report

Orbit 46763

Creation date: 2024-06-27T23:27:20.167540
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/AS1A13_053T01_9000006266_46763cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46763cztM0_level2_quad_clean.evt
Size (bytes)454,887,36096,261,120
Size433.8 MB 91.8 MB
Events in quadrant A6,772,797616,103
Events in quadrant B3,249,123670,177
Events in quadrant C2,889,654638,013
Events in quadrant D3,478,165585,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240084
B0135601
C0127756
D0142871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57815459.427435%
B57821702.940159%
C57801041.799308%
D57831612.784022%

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 6952 5782 295 295 4.24% 5.10%
B 6952 5782 45 45 0.65% 0.78%
C 6953 5782 42 42 0.60% 0.73%
D 6953 5783 98 98 1.41% 1.69%

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 10 83 2913829 22503.91 635 622 129.5
A 9 191 1286650 9934.29 635 622 129.5
A 0 243 71297 545.95 635 622 129.5
B 4 171 306719 2450.69 645 626 124.9
B 3 112 126375 1006.79 645 626 124.9
B 12 3 111689 889.21 645 626 124.9
C 15 208 317122 2166.24 631 634 146.1
C 14 254 87923 597.46 631 634 146.1
C 3 233 16812 110.73 631 634 146.1
D 1 52 627738 4020.28 628 607 156.0
D 13 249 171014 1092.41 628 607 156.0
D 11 224 89091 567.23 628 607 156.0

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