ASTROSAT CZTI

Data Quality Report

Orbit 44680

Creation date: 2024-06-27T23:05:14.407995
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_072T01_9000006008_44680cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44680cztM0_level2_quad_clean.evt
Size (bytes)500,345,280107,303,040
Size477.2 MB 102.3 MB
Events in quadrant A4,877,883718,556
Events in quadrant B3,202,883749,937
Events in quadrant C3,011,210714,452
Events in quadrant D6,901,691592,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202761
B0144861
C0141391
D0252673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67911772.606391%
B67921081.590106%
C6792280.412250%
D679189113.120306%

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 7306 6792 15 15 0.21% 0.22%
B 7307 6793 4 4 0.05% 0.06%
C 7307 6793 4 4 0.05% 0.06%
D 7306 6792 821 821 11.24% 12.09%

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 1798898 11702.75 745 729 153.7
A 13 248 191642 1242.49 745 729 153.7
A 13 254 8886 53.09 745 729 153.7
B 4 171 119971 811.09 743 721 147.0
B 0 246 55131 370.08 743 721 147.0
B 0 183 26939 178.32 743 721 147.0
C 14 254 95585 556.48 725 728 170.5
C 3 233 33569 192.66 725 728 170.5
C 0 207 26854 153.27 725 728 170.5
D 1 52 3484693 20174.22 690 667 172.7
D 2 249 208576 1203.9 690 667 172.7
D 13 249 203761 1176.01 690 667 172.7

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