ASTROSAT CZTI

Data Quality Report

Orbit 51708

Creation date: 2025-04-22T12:01:19.077093
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_031T01_9000006462_51708cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51708cztM0_level2_quad_clean.evt
Size (bytes)503,942,400101,640,960
Size480.6 MB 96.9 MB
Events in quadrant A5,508,104650,414
Events in quadrant B4,500,204698,062
Events in quadrant C4,324,030636,793
Events in quadrant D3,775,070601,775

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213473
B0183392
C0178462
D0161822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70462143.037184%
B70463034.300312%
C70472223.150277%
D7047821.163616%

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 8591 7048 116 116 1.35% 1.65%
B 8591 7048 144 144 1.68% 2.04%
C 8592 7049 175 175 2.04% 2.48%
D 8592 7049 75 75 0.87% 1.06%

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 12 3 914222 5029.28 739 723 181.6
A 3 78 487391 2679.35 739 723 181.6
A 3 14 330132 1813.56 739 723 181.6
B 8 128 708864 4470.68 738 714 158.4
B 1 223 246767 1553.38 738 714 158.4
B 0 213 187063 1176.46 738 714 158.4
C 12 254 377577 1891.01 728 725 199.3
C 13 3 312026 1562.08 728 725 199.3
C 0 192 299588 1499.67 728 725 199.3
D 3 12 324016 1607.94 722 698 201.1
D 5 157 164473 814.49 722 698 201.1
D 2 120 87557 431.97 722 698 201.1

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