ASTROSAT CZTI

Data Quality Report

Orbit 36527

Creation date: 2024-06-27T21:27:59.223938
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/AS1A11_089T02_9000005216_36527cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36527cztM0_level2_quad_clean.evt
Size (bytes)427,988,16072,982,080
Size408.2 MB 69.6 MB
Events in quadrant A2,869,685462,072
Events in quadrant B2,972,802459,684
Events in quadrant C3,199,859444,635
Events in quadrant D3,518,772431,749

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123073
B0126982
C0131842
D0144572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5892110.186694%
B5892230.390360%
C58921121.900883%
D58921382.342159%

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 7205 5893 4 4 0.06% 0.07%
B 7205 5893 10 10 0.14% 0.17%
C 7205 5893 77 77 1.07% 1.31%
D 7205 5893 120 120 1.67% 2.04%

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 217572 1585.53 674 660 136.8
A 7 3 13606 94.63 674 660 136.8
A 15 223 11714 80.8 674 660 136.8
B 5 255 86137 656.47 668 652 130.2
B 4 232 63496 482.6 668 652 130.2
B 5 172 47690 361.22 668 652 130.2
C 0 10 394625 2608.06 644 649 151.1
C 15 214 250657 1655.02 644 649 151.1
C 12 249 14677 92.86 644 649 151.1
D 2 250 142789 892.67 646 628 159.3
D 13 249 141294 883.28 646 628 159.3
D 2 153 99251 619.28 646 628 159.3

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