ASTROSAT CZTI

Data Quality Report

Orbit 46339

Creation date: 2024-06-27T23:21:56.297657
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_070T05_9000006198_46339cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46339cztM0_level2_quad_clean.evt
Size (bytes)603,037,440101,309,760
Size575.1 MB 96.6 MB
Events in quadrant A10,683,009546,261
Events in quadrant B4,462,641725,626
Events in quadrant C3,114,199697,028
Events in quadrant D3,542,397630,895

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364851
B0177181
C0141371
D0153291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6712188128.024434%
B67122033.024434%
C6712811.206794%
D67131562.323849%

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 7582 6713 1588 1588 20.94% 23.66%
B 7582 6713 77 77 1.02% 1.15%
C 7582 6713 17 17 0.22% 0.25%
D 7583 6714 87 87 1.15% 1.30%

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 15 223 5160427 36522.55 675 660 141.3
A 10 83 2842142 20112.96 675 660 141.3
A 13 248 36002 250.16 675 660 141.3
B 3 112 1194148 8071.15 744 720 147.9
B 5 172 213463 1438.78 744 720 147.9
B 8 234 52896 352.87 744 720 147.9
C 12 2 181608 1035.76 738 739 174.6
C 12 250 33147 185.59 738 739 174.6
C 0 207 7480 38.6 738 739 174.6
D 13 249 254890 1387.2 730 706 183.2
D 5 235 237737 1293.59 730 706 183.2
D 2 249 90189 488.35 730 706 183.2

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