ASTROSAT CZTI

Data Quality Report

Orbit 20161011_G06_032T02_9000000730_level2

Creation date: 2025-11-07T00:25:11.218284
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/AS1G06_032T02_9000000730cztM0_level2.fits modeM0/AS1G06_032T02_9000000730cztM0_level2_quad_clean.evt
Size (bytes)1,784,191,6801,746,872,640
Size1.7 GB 1.6 GB
Events in quadrant A10,243,05410,303,742
Events in quadrant B10,750,14710,384,021
Events in quadrant C10,950,07210,246,378
Events in quadrant D9,475,1419,359,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037740
B037760
C037780
D037730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03838420
B04362060
C03919220
D04105310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02790
B02810
C02790
D02810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18416123821.293433%
B18394339132.127289%
C18420717120.929389%
D18400431351.703767%

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 220297 185954 0 0 0.00% 0.00%
B 220297 185666 0 0 0.00% 0.00%
C 220297 185937 0 0 0.00% 0.00%
D 220297 185758 0 0 0.00% 0.00%

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 0 29 9599 10.79 2669 2501 657.6
A 7 110 8490 9.11 2669 2501 657.6
A 0 30 7644 7.82 2669 2501 657.6
B 2 9 8734 11.11 2847 2714 541.7
B 12 226 7274 8.42 2847 2714 541.7
B 3 17 6995 7.9 2847 2714 541.7
C 1 80 7486 6.45 2901 2713 740.1
C 1 81 7263 6.15 2901 2713 740.1
C 12 241 7167 6.02 2901 2713 740.1
D 6 231 6933 6.39 2716 2490 695.2
D 11 82 6824 6.23 2716 2490 695.2
D 4 246 6736 6.11 2716 2490 695.2

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