ASTROSAT CZTI

Data Quality Report

Orbit 43651

Creation date: 2024-06-27T22:54:06.002978
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/AS1A12_068T05_9000005894_43651cztM0_level2.fits modeM0/AS1A12_068T05_9000005894_43651cztM0_level2_quad_clean.evt
Size (bytes)1,209,127,68080,153,280
Size1.1 GB 76.4 MB
Events in quadrant A4,931,749738,574
Events in quadrant B4,933,562733,371
Events in quadrant C16,174,330343,390
Events in quadrant D18,202,650138,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191931
B0192851
C0526067
D0585681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66922964.423192%
B66936129.143882%
C6692589788.120143%
D66926692100.000000%

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 7182 6693 107 107 1.49% 1.60%
B 7183 6694 295 295 4.11% 4.41%
C 7182 6693 5647 5647 78.63% 84.37%
D 7182 6693 6663 6663 92.77% 99.55%

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 834098 5328.67 750 734 156.4
A 15 223 706231 4511.07 750 734 156.4
A 8 4 139200 885.37 750 734 156.4
B 12 32 789338 5556.63 733 711 141.9
B 10 128 348142 2447.98 733 711 141.9
B 4 206 309702 2177.14 733 711 141.9
C 15 142 11298211 129846.92 370 370 87.0
C 15 158 938797 10785.41 370 370 87.0
C 3 233 930412 10689.04 370 370 87.0
D 8 192 16517758 363115.79 164 158 45.5
D 12 6 214074 4702.64 164 158 45.5
D 4 221 151532 3327.74 164 158 45.5

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