ASTROSAT CZTI

Data Quality Report

Orbit 22465

Creation date: 2024-06-27T18:41:28.516257
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/AS1A07_065T01_9000003338_22465cztM0_level2.evt modeM0/AS1A07_065T01_9000003338_22465cztM0_level2_quad_clean.evt
Size (bytes)453,294,720100,575,360
Size432.3 MB 95.9 MB
Events in quadrant A3,175,279658,333
Events in quadrant B3,494,958674,161
Events in quadrant C3,363,860650,336
Events in quadrant D3,276,607634,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133562
B0141472
C0139402
D0138883

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6140631.026059%
B6140811.319218%
C61401562.540717%
D6139570.928490%

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 7470 6140 0 0 0.00% 0.00%
B 7470 6140 1 1 0.01% 0.02%
C 7470 6141 20 20 0.27% 0.33%
D 7469 6140 12 12 0.16% 0.20%

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 15 174 17057 99.46 820 804 163.4
A 13 254 9039 50.4 820 804 163.4
A 0 226 7063 38.3 820 804 163.4
B 0 244 235909 1520.11 825 806 154.7
B 12 111 18200 112.47 825 806 154.7
B 11 111 16178 99.39 825 806 154.7
C 14 238 127605 683.95 801 809 185.4
C 9 54 59940 318.96 801 809 185.4
C 0 10 28951 151.8 801 809 185.4
D 7 222 87990 452.23 804 783 192.8
D 13 249 41321 210.22 804 783 192.8
D 1 52 38783 197.06 804 783 192.8

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