ASTROSAT CZTI

Data Quality Report

Orbit 35272

Creation date: 2022-04-07T09:47:10.600426
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_35272cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35272cztM0_level2_quad_clean.evt
Size (bytes)581,495,04077,558,400
Size554.6 MB 74.0 MB
Events in quadrant A2,858,551504,424
Events in quadrant B6,851,271460,269
Events in quadrant C3,488,995494,146
Events in quadrant D4,007,537472,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122853
B0244772
C0137892
D0158412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597180.133981%
B5971130121.788645%
C59711272.126947%
D59711502.512142%

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 9317 5973 1 1 0.01% 0.02%
B 9317 5973 943 943 10.12% 15.79%
C 9317 5973 113 113 1.21% 1.89%
D 9317 5973 138 138 1.48% 2.31%

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 100340 703.43 706 691 141.7
A 13 6 22068 150.9 706 691 141.7
A 13 254 10617 70.07 706 691 141.7
B 5 236 3271560 26561.65 640 623 123.1
B 5 172 984371 7988.53 640 623 123.1
B 0 189 35944 286.82 640 623 123.1
C 0 10 484861 3028.55 688 694 159.9
C 15 214 248393 1549.4 688 694 159.9
C 9 187 26873 163.75 688 694 159.9
D 7 80 522469 3102.44 689 669 168.2
D 2 249 255851 1517.22 689 669 168.2
D 8 195 241572 1432.32 689 669 168.2

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