ASTROSAT CZTI

Data Quality Report

Orbit 45504

Creation date: 2024-06-27T23:12:59.125706
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_054T01_9000006098_45504cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45504cztM0_level2_quad_clean.evt
Size (bytes)452,920,320104,008,320
Size431.9 MB 99.2 MB
Events in quadrant A5,127,676694,658
Events in quadrant B3,098,809726,284
Events in quadrant C3,014,007697,191
Events in quadrant D5,058,992612,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196281
B0132221
C0130771
D0191761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60031873.115109%
B60031402.332167%
C6003761.266034%
D60034267.096452%

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 7183 6004 17 17 0.24% 0.28%
B 7183 6004 53 53 0.74% 0.88%
C 7183 6004 28 28 0.39% 0.47%
D 7183 6004 323 323 4.50% 5.38%

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 2358567 16307.89 703 688 144.6
A 13 248 32771 221.9 703 688 144.6
A 15 174 10130 65.3 703 688 144.6
B 12 16 97396 690.67 708 687 140.0
B 5 171 74049 523.93 708 687 140.0
B 4 158 60198 425.01 708 687 140.0
C 14 254 219155 1318.11 702 706 165.7
C 12 2 29926 176.31 702 706 165.7
C 3 233 13366 76.39 702 706 165.7
D 1 52 1823097 10671.46 681 662 170.8
D 11 241 198254 1157.02 681 662 170.8
D 2 249 149046 868.88 681 662 170.8

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