ASTROSAT CZTI

Data Quality Report

Orbit 53538

Creation date: 2025-08-21T13:24:44.819056
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/AS1A14_004T05_9000006502_53538cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53538cztM0_level2_quad_clean.evt
Size (bytes)782,686,08086,388,480
Size746.4 MB 82.4 MB
Events in quadrant A10,925,793418,698
Events in quadrant B3,504,099691,527
Events in quadrant C9,859,254445,805
Events in quadrant D4,156,324584,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372122
B0151382
C0339844
D0172302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6804289142.489712%
B68051822.674504%
C6804223132.789536%
D68042473.630218%

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 8379 6804 2333 2333 27.84% 34.29%
B 8380 6805 69 69 0.82% 1.01%
C 8379 6804 2127 2127 25.38% 31.26%
D 8379 6806 173 173 2.06% 2.54%

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 3 63 7775877 51573.11 603 588 150.8
A 15 174 416689 2759.98 603 588 150.8
A 3 62 203994 1349.18 603 588 150.8
B 5 185 185513 1165.12 738 711 158.6
B 0 213 141668 888.69 738 711 158.6
B 1 255 86190 538.92 738 711 158.6
C 1 241 5301935 31346.62 607 603 169.1
C 15 224 1552703 9177.52 607 603 169.1
C 3 242 264041 1557.7 607 603 169.1
D 7 96 292854 1427.98 721 689 204.6
D 2 249 225825 1100.37 721 689 204.6
D 7 70 170080 827.91 721 689 204.6

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