ASTROSAT CZTI

Data Quality Report

Orbit 36019

Creation date: 2022-08-09T20:04:52.664066
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/AS1T04_069T01_9000005158_36019cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36019cztM0_level2_quad_clean.evt
Size (bytes)636,096,96084,052,800
Size606.6 MB 80.2 MB
Events in quadrant A2,799,273575,068
Events in quadrant B5,212,687524,046
Events in quadrant C3,387,268564,213
Events in quadrant D7,476,659479,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118703
B0192502
C0135325
D0262692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A574860.104384%
B574881214.126653%
C57462213.846154%
D5748109218.997912%

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 7181 5749 0 0 0.00% 0.00%
B 7181 5749 674 674 9.39% 11.72%
C 7181 5748 177 177 2.46% 3.08%
D 7181 5749 1144 1144 15.93% 19.90%

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 178731 1303.79 672 658 136.6
A 13 6 13955 97.36 672 658 136.6
A 13 254 9270 63.05 672 658 136.6
B 5 172 1966452 16209.76 626 609 121.3
B 0 190 415507 3421.13 626 609 121.3
B 4 171 97438 798.42 626 609 121.3
C 9 187 591337 4003.93 631 635 147.5
C 15 214 240269 1624.3 631 635 147.5
C 0 10 90654 610.17 631 635 147.5
D 12 235 3837848 25546.19 610 595 150.2
D 12 6 650702 4328.03 610 595 150.2
D 10 118 93246 616.82 610 595 150.2

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