ASTROSAT CZTI

Data Quality Report

Orbit 47826

Creation date: 2024-08-01T17:08:21.079365
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_081T01_9000006354_47826cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47826cztM0_level2_quad_clean.evt
Size (bytes)672,128,640112,008,960
Size641.0 MB 106.8 MB
Events in quadrant A7,845,361763,898
Events in quadrant B3,618,266782,115
Events in quadrant C3,048,639757,301
Events in quadrant D9,799,256577,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285241
B0160521
C0149851
D0341341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73443685.010893%
B73452613.553438%
C73441191.620370%
D7344167222.766885%

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 7809 7344 21 21 0.27% 0.29%
B 7810 7345 30 30 0.38% 0.41%
C 7809 7344 2 2 0.03% 0.03%
D 7809 7344 1594 1594 20.41% 21.70%

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 10 83 3969167 24309.27 787 769 163.2
A 0 31 831718 5090.16 787 769 163.2
A 13 248 9673 54.54 787 769 163.2
B 5 255 231562 1505.76 782 756 153.3
B 0 200 189661 1232.4 782 756 153.3
B 10 7 45411 291.33 782 756 153.3
C 14 254 12611 65.06 775 777 181.9
C 12 2 9187 46.24 775 777 181.9
C 13 61 5185 24.23 775 777 181.9
D 12 33 4616268 25381.35 727 701 181.8
D 12 2 1794755 9865.64 727 701 181.8
D 7 67 166188 910.03 727 701 181.8

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