ASTROSAT CZTI

Data Quality Report

Orbit 36035

Creation date: 2022-08-09T22:52:02.086246
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/AS1T04_069T01_9000005158_36035cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36035cztM0_level2_quad_clean.evt
Size (bytes)519,940,80082,828,800
Size495.9 MB 79.0 MB
Events in quadrant A2,826,745541,964
Events in quadrant B3,871,196529,307
Events in quadrant C4,668,337520,910
Events in quadrant D3,978,250501,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122193
B0153852
C0176552
D0157432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593050.084317%
B59302444.114671%
C59304477.537943%
D59301863.136594%

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 7213 5931 0 0 0.00% 0.00%
B 7213 5931 164 164 2.27% 2.77%
C 7213 5931 354 354 4.91% 5.97%
D 7213 5931 157 157 2.18% 2.65%

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 183863 1326.62 682 669 138.1
A 13 254 8991 60.26 682 669 138.1
A 3 137 7127 46.77 682 669 138.1
B 5 236 954301 7372.78 664 647 129.3
B 0 190 147350 1134.17 664 647 129.3
B 0 213 43922 334.56 664 647 129.3
C 9 187 1787893 11889.76 637 640 150.3
C 15 214 244041 1619.23 637 640 150.3
C 0 10 113478 750.66 637 640 150.3
D 12 235 532326 3258.73 654 636 163.2
D 10 118 277779 1698.61 654 636 163.2
D 12 227 206173 1259.74 654 636 163.2

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