ASTROSAT CZTI

Data Quality Report

Orbit 34917

Creation date: 2022-03-14T09:19:42.827455
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_086T01_9000005002_34917cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34917cztM0_level2_quad_clean.evt
Size (bytes)430,306,56061,848,000
Size410.4 MB 59.0 MB
Events in quadrant A3,040,226378,284
Events in quadrant B3,090,092387,854
Events in quadrant C2,782,022385,253
Events in quadrant D3,773,233363,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123083
B0127172
C0114762
D0147532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5101621.215448%
B51011573.077828%
C5101721.411488%
D51011613.156244%

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 7044 5102 34 34 0.48% 0.67%
B 7044 5102 108 108 1.53% 2.12%
C 7044 5102 58 58 0.82% 1.14%
D 7044 5101 144 144 2.04% 2.82%

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 559839 4394.33 622 613 127.3
A 10 83 58500 454.87 622 613 127.3
A 13 6 11951 89.09 622 613 127.3
B 5 172 698810 5941.31 597 583 117.5
B 0 245 23294 193.25 597 583 117.5
B 4 232 19628 162.06 597 583 117.5
C 15 214 216482 1551.18 588 594 139.2
C 0 10 199702 1430.62 588 594 139.2
C 8 111 50697 360.0 588 594 139.2
D 8 195 837758 5551.99 595 581 150.8
D 2 249 306045 2025.78 595 581 150.8
D 13 249 119991 791.9 595 581 150.8

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