ASTROSAT CZTI

Data Quality Report

Orbit 17676

Creation date: 2024-06-27T17:39:23.860894
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_208T01_9000002614_17676cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17676cztM0_level2_quad_clean.evt
Size (bytes)479,355,84094,864,320
Size457.1 MB 90.5 MB
Events in quadrant A3,467,633603,327
Events in quadrant B3,445,313614,461
Events in quadrant C3,693,591591,044
Events in quadrant D3,439,161580,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145642
B0145762
C0151412
D0149072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6937901.297391%
B6937911.311806%
C69371442.075825%
D69371472.119072%

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 7612 6937 0 0 0.00% 0.00%
B 7612 6937 4 4 0.05% 0.06%
C 7612 6938 0 0 0.00% 0.00%
D 7612 6938 79 79 1.04% 1.14%

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 14 237 214704 1239.56 846 826 172.5
A 0 226 7352 37.82 846 826 172.5
A 12 194 6243 31.4 846 826 172.5
B 7 220 67212 410.14 842 819 161.9
B 0 230 23023 137.16 842 819 161.9
B 12 111 19075 112.77 842 819 161.9
C 3 233 381860 1997.03 816 822 190.8
C 14 238 124294 647.12 816 822 190.8
C 13 61 5755 25.85 816 822 190.8
D 7 238 194426 957.18 823 800 202.3
D 1 52 53676 261.39 823 800 202.3
D 10 70 35377 170.93 823 800 202.3

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