ASTROSAT CZTI

Data Quality Report

Orbit 45447

Creation date: 2024-06-27T23:12:24.518488
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/AS1A13_041T15_9000006086_45447cztM0_level2.fits modeM0/AS1A13_041T15_9000006086_45447cztM0_level2_quad_clean.evt
Size (bytes)488,813,760106,499,520
Size466.2 MB 101.6 MB
Events in quadrant A5,786,578701,053
Events in quadrant B3,510,974740,322
Events in quadrant C3,703,073702,801
Events in quadrant D4,588,138625,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218662
B0148292
C0156452
D0180312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65162483.806016%
B65161301.995089%
C65161522.332719%
D65162834.343155%

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 7576 6517 133 133 1.76% 2.04%
B 7576 6517 62 62 0.82% 0.95%
C 7576 6517 130 130 1.72% 1.99%
D 7576 6517 312 312 4.12% 4.79%

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 2765153 18485.36 721 707 149.5
A 13 248 152992 1018.3 721 707 149.5
A 0 243 35238 230.9 721 707 149.5
B 5 172 133484 922.02 733 712 144.0
B 0 171 126864 876.05 733 712 144.0
B 0 186 105728 729.27 733 712 144.0
C 14 96 572048 3360.53 718 721 170.0
C 14 254 147934 865.9 718 721 170.0
C 1 3 102686 599.76 718 721 170.0
D 5 222 547194 3099.28 704 682 176.3
D 11 241 475448 2692.41 704 682 176.3
D 1 52 210910 1192.2 704 682 176.3

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