ASTROSAT CZTI

Data Quality Report

Orbit 28600

Creation date: 2024-06-27T19:53:51.730774
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/AS1A10_045T06_9000004108_28600cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28600cztM0_level2_quad_clean.evt
Size (bytes)445,870,08085,371,840
Size425.2 MB 81.4 MB
Events in quadrant A3,263,746546,870
Events in quadrant B3,042,797560,398
Events in quadrant C3,025,995541,686
Events in quadrant D3,770,618524,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133021
B0124911
C0123651
D0149751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5891611.035478%
B5892611.035302%
C5892701.188052%
D58921031.748133%

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 7056 5891 4 4 0.06% 0.07%
B 7057 5892 4 4 0.06% 0.07%
C 7057 5892 0 0 0.00% 0.00%
D 7057 5892 68 68 0.96% 1.15%

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 12 16 164934 1075.62 764 750 152.6
A 15 174 90826 590.12 764 750 152.6
A 12 194 35291 226.29 764 750 152.6
B 4 80 39486 270.68 753 735 143.2
B 15 222 18232 122.22 753 735 143.2
B 12 111 17450 116.75 753 735 143.2
C 14 238 121553 704.7 737 744 171.4
C 3 233 14282 78.97 737 744 171.4
C 7 247 14226 78.64 737 744 171.4
D 1 52 519268 2936.11 743 726 176.6
D 8 195 202009 1139.71 743 726 176.6
D 13 104 177200 999.24 743 726 176.6

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