ASTROSAT CZTI

Data Quality Report

Orbit 35300

Creation date: 2022-04-09T06:55:08.408295
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_082T01_9000005056_35300cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35300cztM0_level2_quad_clean.evt
Size (bytes)640,200,96075,706,560
Size610.5 MB 72.2 MB
Events in quadrant A3,410,528502,677
Events in quadrant B6,424,015486,220
Events in quadrant C3,441,802497,708
Events in quadrant D5,740,501420,557

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138823
B0228562
C0135402
D0207372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5505611.108084%
B5505128123.269755%
C55051763.197094%
D5505102118.546776%

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 7118 5506 46 46 0.65% 0.84%
B 7118 5506 920 920 12.92% 16.71%
C 7118 5506 150 150 2.11% 2.72%
D 7118 5506 921 921 12.94% 16.73%

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 705819 5529.45 630 617 127.5
A 7 16 133158 1039.25 630 617 127.5
A 10 83 98039 763.88 630 617 127.5
B 5 236 3208539 28968.54 579 565 110.7
B 5 172 895354 8080.09 579 565 110.7
B 0 190 25753 227.45 579 565 110.7
C 0 10 499537 3462.34 615 619 144.1
C 9 69 228845 1583.82 615 619 144.1
C 15 214 227417 1573.91 615 619 144.1
D 7 80 2700601 19525.63 565 550 138.3
D 13 249 508209 3671.18 565 550 138.3
D 8 195 154713 1114.84 565 550 138.3

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