ASTROSAT CZTI

Data Quality Report

Orbit 46723

Creation date: 2024-06-27T23:26:51.187964
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_092T09_9000006258_46723cztM0_level2.fits modeM0/AS1A13_092T09_9000006258_46723cztM0_level2_quad_clean.evt
Size (bytes)482,961,600110,298,240
Size460.6 MB 105.2 MB
Events in quadrant A6,812,512713,437
Events in quadrant B3,529,277752,779
Events in quadrant C3,144,084731,792
Events in quadrant D3,852,906657,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247222
B0153402
C0145822
D0166292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69442854.104263%
B69431331.915598%
C6944540.777650%
D69441922.764977%

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 7854 6944 52 52 0.66% 0.75%
B 7853 6943 12 12 0.15% 0.17%
C 7854 6945 30 30 0.38% 0.43%
D 7854 6945 132 132 1.68% 1.90%

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 3657181 22983.66 756 738 159.1
A 13 248 97401 607.6 756 738 159.1
A 9 191 88745 553.19 756 738 159.1
B 4 171 232057 1534.94 768 743 150.7
B 3 112 140912 930.12 768 743 150.7
B 0 198 38366 249.66 768 743 150.7
C 14 254 110144 615.39 756 761 177.7
C 1 3 47423 262.52 756 761 177.7
C 0 207 17529 94.34 756 761 177.7
D 13 249 382254 2027.06 744 721 188.2
D 1 52 277241 1469.13 744 721 188.2
D 13 171 75643 398.06 744 721 188.2

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