ASTROSAT CZTI

Data Quality Report

Orbit 06315

Creation date: 2024-06-27T15:05:31.350959
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/AS1A02_070T01_9000000832_06315cztM0_level2.evt modeM0/AS1A02_070T01_9000000832_06315cztM0_level2_quad_clean.evt
Size (bytes)581,794,560103,688,640
Size554.8 MB 98.9 MB
Events in quadrant A4,535,863647,604
Events in quadrant B4,128,324664,932
Events in quadrant C3,464,061665,137
Events in quadrant D4,968,041625,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188433
B0176352
C0159172
D0200162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77221682.175602%
B77222012.602953%
C7722340.440300%
D77222312.991453%

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 7911 7721 12 12 0.15% 0.16%
B 7911 7721 46 46 0.58% 0.60%
C 7911 7722 0 0 0.00% 0.00%
D 7911 7721 142 142 1.79% 1.84%

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 15 236 739606 3975.3 902 878 185.8
A 8 15 131827 704.67 902 878 185.8
A 15 174 121623 649.76 902 878 185.8
B 3 64 463010 2602.02 914 889 177.6
B 15 204 52635 291.36 914 889 177.6
B 4 81 30344 165.85 914 889 177.6
C 9 54 10816 48.08 880 883 206.6
C 13 61 6922 29.23 880 883 206.6
C 1 16 6899 29.12 880 883 206.6
D 12 220 723164 3390.29 865 836 213.1
D 12 221 334905 1567.97 865 836 213.1
D 2 152 197708 924.03 865 836 213.1

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