ASTROSAT CZTI

Data Quality Report

Orbit 35642

Creation date: 2022-05-10T14:16:55.708748
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/AS1A11_106T01_9000005102_35642cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35642cztM0_level2_quad_clean.evt
Size (bytes)758,292,48061,274,880
Size723.2 MB 58.4 MB
Events in quadrant A13,542,000229,198
Events in quadrant B2,999,216419,161
Events in quadrant C3,442,037410,314
Events in quadrant D2,606,362407,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0439383
B0124942
C0138092
D0116072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55375537100.000000%
B5537821.480946%
C55371863.359220%
D5537390.704353%

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 7121 5538 5307 5307 74.53% 95.83%
B 7121 5538 49 49 0.69% 0.88%
C 7121 5538 155 155 2.18% 2.80%
D 7121 5538 24 24 0.34% 0.43%

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 11864753 144122.15 409 401 82.3
A 10 83 90505 1094.54 409 401 82.3
A 13 254 5271 59.16 409 401 82.3
B 5 172 384901 3107.96 630 611 123.6
B 0 197 100962 811.59 630 611 123.6
B 0 189 29740 235.58 630 611 123.6
C 0 10 722683 5037.41 616 620 143.3
C 15 214 230637 1604.69 616 620 143.3
C 10 49 43793 301.19 616 620 143.3
D 2 153 129114 852.8 622 607 150.7
D 2 249 38888 254.04 622 607 150.7
D 8 195 27312 177.22 622 607 150.7

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