ASTROSAT CZTI

Data Quality Report

Orbit 21446

Creation date: 2024-06-27T18:27:54.309593
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_140T01_9000003160_21446cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21446cztM0_level2_quad_clean.evt
Size (bytes)468,918,72072,167,040
Size447.2 MB 68.8 MB
Events in quadrant A3,135,499438,658
Events in quadrant B3,260,004443,937
Events in quadrant C3,488,669427,940
Events in quadrant D3,867,218412,785

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135192
B0137882
C0143802
D0159333

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6625260.392453%
B6625460.694340%
C6625811.222642%
D6624620.935990%

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 7590 6625 0 0 0.00% 0.00%
B 7590 6625 2 2 0.03% 0.03%
C 7590 6625 2 2 0.03% 0.03%
D 7589 6624 38 38 0.50% 0.57%

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 11 47 11440 65.35 809 794 162.9
A 13 254 9569 53.86 809 794 162.9
A 0 226 6898 37.47 809 794 162.9
B 0 230 23759 147.89 812 791 155.3
B 12 111 18845 116.25 812 791 155.3
B 0 190 17585 108.14 812 791 155.3
C 3 233 336199 1843.86 777 781 181.9
C 14 238 122929 671.47 777 781 181.9
C 13 61 5352 25.13 777 781 181.9
D 1 52 258799 1351.5 781 761 190.9
D 12 235 232644 1214.51 781 761 190.9
D 1 20 109152 567.71 781 761 190.9

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