ASTROSAT CZTI

Data Quality Report

Orbit 18917

Creation date: 2024-06-27T17:56:31.302179
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/AS1A05_163T01_9000002820_18917cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18917cztM0_level2_quad_clean.evt
Size (bytes)758,260,80082,494,720
Size723.1 MB 78.7 MB
Events in quadrant A11,449,012352,321
Events in quadrant B4,887,464593,498
Events in quadrant C3,159,819572,727
Events in quadrant D3,056,860554,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381141
B0183611
C0129141
D0129481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6071423369.724922%
B607179413.078570%
C6072681.119895%
D6072260.428195%

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 7390 6070 2833 2833 38.34% 46.67%
B 7391 6072 512 512 6.93% 8.43%
C 7392 6073 0 0 0.00% 0.00%
D 7392 6073 7 7 0.09% 0.12%

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 14 235 9705896 106765.07 452 444 90.9
A 13 254 4435 43.9 452 444 90.9
A 0 226 4011 39.24 452 444 90.9
B 3 112 1648776 11827.05 751 734 139.3
B 5 250 129333 922.88 751 734 139.3
B 7 220 82129 584.13 751 734 139.3
C 14 238 120194 687.25 749 753 173.8
C 3 233 78471 447.18 749 753 173.8
C 6 96 42049 237.61 749 753 173.8
D 14 34 68053 371.18 757 736 181.4
D 7 238 58534 318.69 757 736 181.4
D 2 234 22321 119.02 757 736 181.4

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