ASTROSAT CZTI

Data Quality Report

Orbit 54201

Creation date: 2025-10-05T02:45:26.286783
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/AS1C09_004T08_9000006514_54201cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54201cztM0_level2_quad_clean.evt
Size (bytes)611,000,640104,584,320
Size582.7 MB 99.7 MB
Events in quadrant A3,868,189718,487
Events in quadrant B4,398,773771,199
Events in quadrant C6,213,629590,514
Events in quadrant D7,543,338554,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170750
B0184600
C0241020
D0277720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76421141.491756%
B76431842.407432%
C7643103613.554887%
D7643119215.595970%

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 7642 7642 91 91 1.19% 1.19%
B 7643 7643 121 121 1.58% 1.58%
C 7643 7643 952 952 12.46% 12.46%
D 7643 7643 1221 1221 15.98% 15.98%

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 15 174 253399 1268.68 800 781 199.1
A 0 8 192135 961.0 800 781 199.1
A 7 29 105045 523.63 800 781 199.1
B 4 171 368320 2189.62 791 765 167.9
B 15 20 169147 1003.1 791 765 167.9
B 5 185 163320 968.38 791 765 167.9
C 15 215 1491093 7494.4 721 713 198.9
C 15 216 646041 3245.04 721 713 198.9
C 12 252 385833 1936.58 721 713 198.9
D 8 176 2311825 11047.15 735 704 209.2
D 3 12 1677250 8013.88 735 704 209.2
D 2 172 189909 904.4 735 704 209.2

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