ASTROSAT CZTI

Data Quality Report

Orbit 21620

Creation date: 2024-06-27T18:30:17.973018
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/AS1A05_094T01_9000003204_21620cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21620cztM0_level2_quad_clean.evt
Size (bytes)477,192,96081,806,400
Size455.1 MB 78.0 MB
Events in quadrant A3,487,319510,324
Events in quadrant B3,339,807513,275
Events in quadrant C3,258,583503,434
Events in quadrant D3,918,645490,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146812
B0142091
C0139071
D0161791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65871322.003947%
B6587490.743889%
C6588851.290225%
D65881932.929569%

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 7587 6588 38 38 0.50% 0.58%
B 7587 6588 6 6 0.08% 0.09%
C 7588 6589 0 0 0.00% 0.00%
D 7588 6589 139 139 1.83% 2.11%

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 5 16 332996 2022.67 815 797 164.2
A 15 236 11738 66.62 815 797 164.2
A 13 254 10547 59.36 815 797 164.2
B 0 190 37764 234.49 820 800 157.6
B 3 64 24381 149.59 820 800 157.6
B 0 228 19841 120.79 820 800 157.6
C 14 238 123988 660.65 796 800 186.5
C 9 54 16101 82.06 796 800 186.5
C 8 128 8306 40.25 796 800 186.5
D 13 172 209617 1077.54 797 775 193.8
D 7 238 185445 952.82 797 775 193.8
D 7 38 133431 684.45 797 775 193.8

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