ASTROSAT CZTI

Data Quality Report

Orbit 19968

Creation date: 2024-06-27T18:09:22.518354
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/AS1A05_103T05_9000002974_19968cztM0_level2.evt modeM0/AS1A05_103T05_9000002974_19968cztM0_level2_quad_clean.evt
Size (bytes)577,416,96061,430,400
Size550.7 MB 58.6 MB
Events in quadrant A9,747,565210,423
Events in quadrant B2,442,610444,032
Events in quadrant C2,560,424425,493
Events in quadrant D2,386,965418,470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324890
B0106040
C0108370
D0107870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5138345867.302452%
B5139220.428099%
C5139380.739443%
D5139260.505935%

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 5137 5137 2916 2916 56.76% 56.76%
B 5139 5139 14 14 0.27% 0.27%
C 5139 5139 12 12 0.23% 0.23%
D 5139 5139 26 26 0.51% 0.51%

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 14 238 8441164 125508.02 326 319 67.3
A 14 254 40355 595.3 326 319 67.3
A 11 29 5178 72.25 326 319 67.3
B 7 220 72924 634.5 591 574 114.0
B 0 230 14670 123.62 591 574 114.0
B 12 111 13348 112.03 591 574 114.0
C 9 221 159606 1188.77 567 570 133.8
C 3 233 93477 694.46 567 570 133.8
C 14 238 89559 665.18 567 570 133.8
D 1 52 77362 548.69 572 555 140.0
D 12 218 48021 339.09 572 555 140.0
D 7 238 39578 278.77 572 555 140.0

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