ASTROSAT CZTI

Data Quality Report

Orbit 04766

Creation date: 2024-06-27T14:46:41.214801
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/AS1G05_212T01_9000000600_04766cztM0_level2.evt modeM0/AS1G05_212T01_9000000600_04766cztM0_level2_quad_clean.evt
Size (bytes)569,672,64097,384,320
Size543.3 MB 92.9 MB
Events in quadrant A3,422,689613,895
Events in quadrant B3,970,253616,607
Events in quadrant C4,756,336602,402
Events in quadrant D4,587,384587,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156568
B0169526
C0193625
D01921816

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7606690.907179%
B76071171.538057%
C76073514.614171%
D76031271.670393%

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 7888 7610 2 2 0.03% 0.03%
B 7888 7610 31 31 0.39% 0.41%
C 7888 7610 253 253 3.21% 3.32%
D 7888 7610 61 61 0.77% 0.80%

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 84642 481.45 851 830 174.1
A 15 174 17449 95.47 851 830 174.1
A 3 1 17338 94.83 851 830 174.1
B 14 167 306161 1849.61 864 839 165.1
B 15 204 186922 1127.27 864 839 165.1
B 4 80 118608 713.43 864 839 165.1
C 14 48 1527971 7980.81 823 824 191.4
C 1 16 12180 59.35 823 824 191.4
C 13 61 6634 30.36 823 824 191.4
D 11 132 735672 3720.8 825 799 197.5
D 13 235 263590 1330.56 825 799 197.5
D 2 136 196309 989.91 825 799 197.5

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