ASTROSAT CZTI

Data Quality Report

Orbit 21711

Creation date: 2024-06-27T18:31:27.315052
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/AS1A07_039T03_9000003214_21711cztM0_level2.evt modeM0/AS1A07_039T03_9000003214_21711cztM0_level2_quad_clean.evt
Size (bytes)497,387,520120,384,000
Size474.3 MB 114.8 MB
Events in quadrant A5,598,956791,066
Events in quadrant B3,025,276854,735
Events in quadrant C2,952,641820,314
Events in quadrant D3,103,451784,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205422
B0126382
C0122812
D0130692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56493916.921579%
B5649520.920517%
C5649581.026730%
D5649370.654983%

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 6979 5650 151 151 2.16% 2.67%
B 6979 5650 20 20 0.29% 0.35%
C 6979 5650 0 0 0.00% 0.00%
D 6979 5650 13 13 0.19% 0.23%

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 15 236 2881535 20513.24 700 686 140.4
A 13 254 9620 63.62 700 686 140.4
A 10 253 9462 62.49 700 686 140.4
B 3 64 61927 459.28 721 704 133.3
B 0 230 54484 403.45 721 704 133.3
B 4 190 38851 286.17 721 704 133.3
C 14 238 112793 688.01 700 705 162.9
C 8 208 104195 635.23 700 705 162.9
C 13 61 4905 25.78 700 705 162.9
D 2 136 132873 797.59 693 672 165.7
D 12 227 110312 661.48 693 672 165.7
D 1 52 91592 548.54 693 672 165.7

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