ASTROSAT CZTI

Data Quality Report

Orbit 19295

Creation date: 2024-06-27T18:01:56.565761
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/AS1T03_099T03_9000002854_19295cztM0_level2.evt modeM0/AS1T03_099T03_9000002854_19295cztM0_level2_quad_clean.evt
Size (bytes)501,102,720109,085,760
Size477.9 MB 104.0 MB
Events in quadrant A3,054,295749,520
Events in quadrant B3,192,930759,937
Events in quadrant C2,985,484705,191
Events in quadrant D5,526,954660,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129521
B0133391
C0128251
D0205581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6129761.240007%
B6129991.615272%
C6129811.321586%
D612967511.013216%

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 7454 6129 1 1 0.01% 0.02%
B 7454 6130 9 9 0.12% 0.15%
C 7454 6130 0 0 0.00% 0.00%
D 7454 6130 693 693 9.30% 11.31%

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 5 16 11232 66.52 789 776 157.2
A 13 254 8671 50.23 789 776 157.2
A 0 226 6954 39.3 789 776 157.2
B 3 64 39117 263.49 781 765 145.6
B 0 229 28837 192.86 781 765 145.6
B 0 197 25921 172.83 781 765 145.6
C 14 238 116813 687.69 733 737 168.8
C 3 233 7997 43.01 733 737 168.8
C 13 61 5100 25.85 733 737 168.8
D 7 238 2222671 12674.24 726 703 175.3
D 1 52 343611 1955.97 726 703 175.3
D 0 32 120740 684.7 726 703 175.3

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