ASTROSAT CZTI

Data Quality Report

Orbit 18146

Creation date: 2024-06-27T17:45:42.314811
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_9000002698_18146cztM0_level2.evt modeM0/AS1A05_082T08_9000002698_18146cztM0_level2_quad_clean.evt
Size (bytes)492,238,08095,495,040
Size469.4 MB 91.1 MB
Events in quadrant A3,220,339611,606
Events in quadrant B3,854,879619,456
Events in quadrant C3,257,509598,031
Events in quadrant D4,111,635587,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139682
B0160402
C0139962
D0169952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6824390.571512%
B6824550.805979%
C6824670.981829%
D68241281.875733%

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 7859 6825 2 2 0.03% 0.03%
B 7859 6825 15 15 0.19% 0.22%
C 7859 6825 1 1 0.01% 0.01%
D 7859 6825 79 79 1.01% 1.16%

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 15 174 21201 121.42 829 811 167.9
A 3 15 8415 45.28 829 811 167.9
A 4 2 7804 41.64 829 811 167.9
B 4 171 342745 2161.1 824 803 158.2
B 5 143 186410 1173.05 824 803 158.2
B 7 220 64658 403.57 824 803 158.2
C 14 238 122242 656.08 789 795 185.1
C 3 233 52674 280.26 789 795 185.1
C 13 61 5619 26.06 789 795 185.1
D 7 238 385566 1966.82 798 776 195.6
D 11 176 340422 1736.07 798 776 195.6
D 10 70 149212 758.72 798 776 195.6

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