ASTROSAT CZTI

Data Quality Report

Orbit 12648

Creation date: 2024-06-27T16:30:29.608896
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/AS1A04_174T01_9000001876_12648cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12648cztM0_level2_quad_clean.evt
Size (bytes)566,939,520104,431,680
Size540.7 MB 99.6 MB
Events in quadrant A3,019,296727,959
Events in quadrant B4,720,982673,384
Events in quadrant C3,114,735716,712
Events in quadrant D5,901,555618,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128902
B0179771
C0132001
D0216731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6097671.098901%
B609763110.349352%
C6097811.328522%
D609790314.810563%

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 7258 6098 0 0 0.00% 0.00%
B 7258 6098 513 513 7.07% 8.41%
C 7258 6098 29 29 0.40% 0.48%
D 7258 6098 740 740 10.20% 12.14%

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 8 15 14456 86.19 781 767 158.8
A 0 226 7002 39.26 781 767 158.8
A 12 194 6060 33.33 781 767 158.8
B 4 239 1576609 11376.0 732 718 138.5
B 11 51 127171 912.84 732 718 138.5
B 3 209 57366 408.93 732 718 138.5
C 15 208 181535 1039.99 750 760 173.8
C 14 234 8163 42.59 750 760 173.8
C 13 61 5249 25.82 750 760 173.8
D 1 52 2926739 17435.29 703 688 167.8
D 10 157 263224 1564.36 703 688 167.8
D 2 234 21693 125.16 703 688 167.8

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