ASTROSAT CZTI

Data Quality Report

Orbit 22797

Creation date: 2024-06-27T18:45:53.447427
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/AS1T03_168T01_9000003368_22797cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22797cztM0_level2_quad_clean.evt
Size (bytes)595,342,080139,029,120
Size567.8 MB 132.6 MB
Events in quadrant A3,229,770993,627
Events in quadrant B3,285,5711,007,170
Events in quadrant C3,337,074958,581
Events in quadrant D7,772,617833,429

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133721
B0134721
C0138621
D0272591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5978941.572432%
B59791121.873223%
C59791702.843285%
D5979153325.639739%

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 7278 5979 0 0 0.00% 0.00%
B 7279 5980 0 0 0.00% 0.00%
C 7279 5980 13 13 0.18% 0.22%
D 7279 5980 1295 1295 17.79% 21.66%

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 13 254 11504 64.68 838 825 165.1
A 0 226 7241 38.86 838 825 165.1
A 12 194 6020 31.46 838 825 165.1
B 0 230 24892 158.61 830 814 151.8
B 12 111 16427 102.85 830 814 151.8
B 11 111 14246 88.48 830 814 151.8
C 14 238 132883 731.79 803 813 180.5
C 10 22 56575 308.97 803 813 180.5
C 2 16 12344 63.89 803 813 180.5
D 1 52 4589851 25592.64 753 733 179.3
D 5 222 225468 1253.3 753 733 179.3
D 2 152 32708 178.32 753 733 179.3

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