ASTROSAT CZTI

Data Quality Report

Orbit 12717

Creation date: 2024-06-27T16:31:30.140271
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/AS1A04_174T01_9000001876_12717cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12717cztM0_level2_quad_clean.evt
Size (bytes)526,510,08082,330,560
Size502.1 MB 78.5 MB
Events in quadrant A3,339,053517,189
Events in quadrant B4,875,041490,035
Events in quadrant C3,360,692516,271
Events in quadrant D3,902,523488,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141083
B0187042
C0143772
D0161532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6897630.913441%
B68975598.104973%
C6897590.855444%
D68971371.986371%

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 7778 6899 0 0 0.00% 0.00%
B 7778 6899 350 350 4.50% 5.07%
C 7778 6899 0 0 0.00% 0.00%
D 7778 6899 85 85 1.09% 1.23%

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 12 189 42766 238.42 852 837 175.9
A 8 15 13091 69.68 852 837 175.9
A 0 226 7339 36.97 852 837 175.9
B 4 239 1389974 8805.0 824 807 157.8
B 4 206 191397 1208.02 824 807 157.8
B 12 111 18212 110.32 824 807 157.8
C 15 208 139670 718.22 826 830 193.3
C 13 61 6002 26.75 826 830 193.3
C 8 222 2491 8.59 826 830 193.3
D 1 52 649442 3349.77 812 794 193.6
D 10 199 147901 759.7 812 794 193.6
D 2 234 24276 121.27 812 794 193.6

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