ASTROSAT CZTI

Data Quality Report

Orbit 35632

Creation date: 2022-05-10T12:22:04.149245
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/AS1T05_028T01_9000005100_35632cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35632cztM0_level2_quad_clean.evt
Size (bytes)2,212,090,560202,979,520
Size2.1 GB 193.6 MB
Events in quadrant A26,228,1581,043,553
Events in quadrant B15,834,2061,275,679
Events in quadrant C10,766,8951,290,655
Events in quadrant D12,891,8041,231,711

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0912451134
B059631241
C043148130
D050536147

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03850
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18841892847.386020%
B18920247813.097252%
C189233711.960577%
D189296043.190871%

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 23092 18958 8402 8402 36.38% 44.32%
B 23092 18971 1817 1817 7.87% 9.58%
C 23092 18979 293 293 1.27% 1.54%
D 23092 18985 521 521 2.26% 2.74%

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 15 169 18857400 52156.92 1813 1782 361.5
A 10 83 328471 903.66 1813 1782 361.5
A 13 6 27146 70.16 1813 1782 361.5
B 5 172 6893321 17722.75 2055 2000 388.8
B 5 200 678515 1739.83 2055 2000 388.8
B 0 189 52715 130.43 2055 2000 388.8
C 0 10 1548677 3175.52 2113 2134 487.0
C 15 214 768784 1574.16 2113 2134 487.0
C 10 49 91355 183.2 2113 2134 487.0
D 14 52 1445586 2800.35 2110 2054 515.5
D 7 80 1039265 2012.12 2110 2054 515.5
D 1 52 631698 1221.47 2110 2054 515.5

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