ASTROSAT CZTI

Data Quality Report

Orbit 20220618_A11_097T17_9000005194_level2

Creation date: 2022-06-23T09:05:55.370922
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_097T17_9000005194cztM0_level2.evt modeM0/AS1A11_097T17_9000005194cztM0_level2_quad_clean.evt
Size (bytes)4,722,065,280790,551,360
Size4.4 GB 753.9 MB
Events in quadrant A28,514,8355,084,981
Events in quadrant B36,214,4615,037,178
Events in quadrant C32,174,5015,091,709
Events in quadrant D42,181,2414,733,338

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011960
B011960
C011960
D011960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01218680
B01457840
C01307040
D01647500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02210
C02210
D02210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582661180.202519%
B5826621243.645351%
C582648911.529246%
D5826629175.006350%

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 80550 58280 35 35 0.04% 0.06%
B 80550 58280 1648 1648 2.05% 2.83%
C 80550 58278 837 837 1.04% 1.44%
D 80549 58278 3032 3032 3.76% 5.20%

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 1582450 1176.92 6737 6612 1338.9
A 9 143 440822 324.29 6737 6612 1338.9
A 12 189 364097 266.99 6737 6612 1338.9
B 5 172 5202683 4178.91 6593 6418 1243.5
B 5 236 3263456 2619.35 6593 6418 1243.5
B 0 189 516662 410.34 6593 6418 1243.5
C 0 207 2780864 1839.09 6560 6619 1508.5
C 15 214 2428098 1605.24 6560 6619 1508.5
C 0 10 1422790 938.8 6560 6619 1508.5
D 12 6 6978979 4465.56 6468 6307 1561.4
D 2 249 2912724 1861.38 6468 6307 1561.4
D 13 171 1907334 1217.49 6468 6307 1561.4

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