ASTROSAT CZTI

Data Quality Report

Orbit 24529

Creation date: 2024-06-27T19:06:57.153075
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_183T01_9000003606_24529cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24529cztM0_level2_quad_clean.evt
Size (bytes)594,305,280116,303,040
Size566.8 MB 110.9 MB
Events in quadrant A3,753,547775,524
Events in quadrant B5,443,234757,508
Events in quadrant C3,562,571758,393
Events in quadrant D4,751,742730,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158092
B0207852
C0151212
D0187982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71922022.808676%
B719290512.583426%
C71921672.322024%
D71922954.101780%

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 8827 7193 6 6 0.07% 0.08%
B 8827 7193 500 500 5.66% 6.95%
C 8827 7193 0 0 0.00% 0.00%
D 8827 7194 149 149 1.69% 2.07%

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 14 111 328491 1840.45 888 867 178.0
A 13 254 11716 60.94 888 867 178.0
A 3 137 8048 40.34 888 867 178.0
B 3 64 2110747 13201.6 840 818 159.8
B 15 32 26270 159.25 840 818 159.8
B 12 111 19657 117.87 840 818 159.8
C 14 238 135967 675.26 857 861 200.1
C 2 16 87256 431.8 857 861 200.1
C 13 61 5917 25.27 857 861 200.1
D 1 52 1140841 5491.0 863 837 207.6
D 8 195 163255 782.31 863 837 207.6
D 5 222 71425 340.0 863 837 207.6

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