ASTROSAT CZTI

Data Quality Report

Orbit 08409

Creation date: 2024-06-27T15:32:14.612720
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/AS1A03_025T07_9000001182_08409cztM0_level2.evt modeM0/AS1A03_025T07_9000001182_08409cztM0_level2_quad_clean.evt
Size (bytes)455,846,40076,674,240
Size434.7 MB 73.1 MB
Events in quadrant A3,286,361476,980
Events in quadrant B3,381,572485,556
Events in quadrant C3,069,946465,965
Events in quadrant D3,634,793448,896

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135733
B0137642
C0131442
D0148942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365520.816968%
B6365490.769835%
C6365220.345640%
D63651832.875098%

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 7715 6366 19 19 0.25% 0.30%
B 7715 6366 6 6 0.08% 0.09%
C 7715 6366 0 0 0.00% 0.00%
D 7715 6366 146 146 1.89% 2.29%

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 4 2 127881 775.49 817 802 163.9
A 0 226 7703 42.11 817 802 163.9
A 12 194 7217 39.15 817 802 163.9
B 0 214 84345 544.07 822 804 153.5
B 4 81 71907 463.07 822 804 153.5
B 4 48 29307 185.63 822 804 153.5
C 1 16 10078 52.0 781 788 178.6
C 9 160 6283 30.76 781 788 178.6
C 13 61 5918 28.72 781 788 178.6
D 1 7 304010 1576.53 768 749 192.4
D 7 71 122940 635.22 768 749 192.4
D 12 221 69109 355.37 768 749 192.4

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