ASTROSAT CZTI

Data Quality Report

Orbit 02281

Creation date: 2024-06-27T14:15:37.712899
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/AS1T01_058T01_9000000348_02281cztM0_level2.evt modeM0/AS1T01_058T01_9000000348_02281cztM0_level2_quad_clean.evt
Size (bytes)380,517,12088,655,040
Size362.9 MB 84.5 MB
Events in quadrant A2,735,624551,701
Events in quadrant B2,806,763562,025
Events in quadrant C2,854,176568,137
Events in quadrant D2,685,452550,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130671
B0131301
C0132091
D0131655

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648790.138739%
B648790.138739%
C648750.077077%
D6485110.169622%

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 7377 6487 0 0 0.00% 0.00%
B 7377 6488 1 1 0.01% 0.02%
C 7377 6488 3 3 0.04% 0.05%
D 7377 6487 5 5 0.07% 0.08%

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 12 194 8007 50.56 710 693 144.7
A 0 226 7414 46.46 710 693 144.7
A 8 34 1768 7.43 710 693 144.7
B 0 228 15953 109.69 721 702 139.0
B 12 111 10644 71.5 721 702 139.0
B 11 111 8930 59.18 721 702 139.0
C 5 234 100137 609.85 691 694 163.1
C 8 112 26953 161.04 691 694 163.1
C 8 128 11493 66.22 691 694 163.1
D 9 66 38841 233.47 682 664 163.5
D 9 64 20060 118.62 682 664 163.5
D 13 169 19474 115.03 682 664 163.5

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