ASTROSAT CZTI

Data Quality Report

Orbit 20200714_T03_214T01_9000003758_level2

Creation date: 2021-08-14T09:45:19.622251
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/AS1T03_214T01_9000003758cztM0_level2_bc.evt modeM0/AS1T03_214T01_9000003758cztM0_level2_quad_clean.evt
Size (bytes)5,134,766,400922,858,560
Size4.8 GB 880.1 MB
Events in quadrant A96,778,2362,765,216
Events in quadrant B15,709,2347,065,546
Events in quadrant C15,054,3326,769,385
Events in quadrant D23,328,2196,671,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013840
B013840
C013840
D013840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05138040
B01449600
C01453430
D01701950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A679755767084.840015%
B679767991.175415%
C6797511091.631482%
D6797518002.648032%

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 117468 67725 11517 11517 9.80% 17.01%
B 117468 67975 3 3 0.00% 0.00%
C 117468 67976 19 19 0.02% 0.03%
D 117468 67973 326 326 0.28% 0.48%

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 0 13 89832054 235232.03 1784 1763 381.9
A 13 254 45623 114.85 1784 1763 381.9
A 12 16 45483 114.49 1784 1763 381.9
B 0 219 338878 461.25 3858 3781 726.5
B 0 190 291821 396.48 3858 3781 726.5
B 15 33 114506 152.41 3858 3781 726.5
C 3 233 623462 724.72 3659 3652 855.2
C 2 16 378277 438.03 3659 3652 855.2
C 13 61 20896 20.16 3659 3652 855.2
D 1 52 7134525 8376.72 3723 3634 851.3
D 7 80 1244519 1457.68 3723 3634 851.3
D 2 234 281969 326.96 3723 3634 851.3

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