ASTROSAT CZTI

Data Quality Report

Orbit 48175

Creation date: 2024-08-26T14:29:51.518891
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/AS1C09_004T05_9000006408_48175cztM0_level2.fits modeM0/AS1C09_004T05_9000006408_48175cztM0_level2_quad_clean.evt
Size (bytes)533,232,00097,686,720
Size508.5 MB 93.2 MB
Events in quadrant A8,237,812825,308
Events in quadrant B1,350,38250,366
Events in quadrant C3,410,051815,811
Events in quadrant D6,130,634723,693

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295281
B083061
C0161541
D0239691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77423794.895376%
B77427742100.000000%
C7742270.348747%
D774190911.742669%

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 7742 7742 50 50 0.65% 0.65%
B 7741 7741 0 0 0.00% 0.00%
C 7742 7742 8 8 0.10% 0.10%
D 7741 7741 564 564 7.29% 7.29%

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 4870093 27759.31 837 815 175.4
A 13 248 96995 548.31 837 815 175.4
A 13 254 16077 87.01 837 815 175.4
B 2 177 1067466 82411.21 54 52 13.0
B 4 21 24514 1888.62 54 52 13.0
B 0 186 15171 1167.28 54 52 13.0
C 12 2 60021 298.28 844 848 198.4
C 0 207 20369 98.4 844 848 198.4
C 11 16 15870 75.72 844 848 198.4
D 2 165 2410188 11981.3 802 776 201.1
D 12 2 315351 1564.29 802 776 201.1
D 2 249 50714 248.33 802 776 201.1

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