ASTROSAT CZTI

Data Quality Report

Orbit 46842

Creation date: 2024-06-27T23:28:22.722113
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/AS1A13_053T01_9000006274_46842cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46842cztM0_level2_quad_clean.evt
Size (bytes)530,830,080123,261,120
Size506.2 MB 117.6 MB
Events in quadrant A6,848,886833,987
Events in quadrant B4,018,627837,894
Events in quadrant C3,556,178804,124
Events in quadrant D4,621,596714,580

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249750
B0172280
C0162940
D0195880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7789380.487868%
B77891271.630505%
C7789310.397997%
D77903884.980745%

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 7789 7789 1 1 0.01% 0.01%
B 7789 7789 65 65 0.83% 0.83%
C 7789 7789 21 21 0.27% 0.27%
D 7790 7790 300 300 3.85% 3.85%

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 3523359 19987.08 846 829 176.2
A 13 6 23810 130.4 846 829 176.2
A 13 254 12001 63.39 846 829 176.2
B 3 112 246359 1479.9 840 812 165.9
B 5 32 198693 1192.62 840 812 165.9
B 8 234 61593 366.32 840 812 165.9
C 1 241 230021 1171.02 833 836 195.7
C 14 254 67239 339.29 833 836 195.7
C 13 61 5686 24.78 833 836 195.7
D 13 249 1123202 5519.39 811 786 203.4
D 1 52 178022 871.54 811 786 203.4
D 5 171 88351 430.59 811 786 203.4

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