ASTROSAT CZTI

Data Quality Report

Orbit 34322

Creation date: 2022-02-04T11:09:31.221479
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_082T08_9000004900_34322cztM0_level2.evt modeM0/AS1A05_082T08_9000004900_34322cztM0_level2_quad_clean.evt
Size (bytes)446,976,00088,329,600
Size426.3 MB 84.2 MB
Events in quadrant A2,361,869587,290
Events in quadrant B2,878,756606,777
Events in quadrant C3,595,924583,195
Events in quadrant D4,366,886553,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100963
B0116712
C0137562
D0163582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492150.101605%
B4921851.727291%
C49212014.084536%
D49211633.312335%

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 7042 4922 1 1 0.01% 0.02%
B 7042 4922 48 48 0.68% 0.98%
C 7042 4922 177 177 2.51% 3.60%
D 7042 4922 125 125 1.78% 2.54%

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 28216 229.45 601 591 120.4
A 13 254 8309 64.11 601 591 120.4
A 13 6 7445 56.93 601 591 120.4
B 5 172 212218 1840.67 605 592 115.0
B 4 171 84436 729.25 605 592 115.0
B 5 31 68210 588.12 605 592 115.0
C 14 254 936969 6891.5 588 594 135.9
C 15 214 204921 1503.8 588 594 135.9
C 0 10 105993 775.71 588 594 135.9
D 8 195 961310 6698.6 584 570 143.4
D 12 235 454234 3163.1 584 570 143.4
D 2 249 264054 1837.1 584 570 143.4

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