ASTROSAT CZTI

Data Quality Report

Orbit 22172

Creation date: 2024-06-27T18:37:44.025575
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/AS1A07_007T03_9000003280_22172cztM0_level2.evt modeM0/AS1A07_007T03_9000003280_22172cztM0_level2_quad_clean.evt
Size (bytes)460,782,72097,439,040
Size439.4 MB 92.9 MB
Events in quadrant A3,260,198632,808
Events in quadrant B3,377,029646,507
Events in quadrant C3,313,235611,611
Events in quadrant D3,542,986586,865

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139772
B0142472
C0141002
D0152172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6786310.456823%
B6786490.722075%
C6786791.164162%
D67871412.077501%

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 8936 6788 0 0 0.00% 0.00%
B 8936 6788 2 2 0.02% 0.03%
C 8936 6788 0 0 0.00% 0.00%
D 8937 6789 92 92 1.03% 1.36%

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 3 1 18847 106.9 840 823 168.6
A 13 254 12123 67.02 840 823 168.6
A 0 226 7319 38.53 840 823 168.6
B 12 111 19181 115.48 844 824 159.0
B 0 230 18649 112.14 844 824 159.0
B 3 64 16986 101.67 844 824 159.0
C 14 238 130058 677.65 812 817 190.7
C 10 22 11666 56.88 812 817 190.7
C 0 10 5659 25.39 812 817 190.7
D 1 52 277708 1423.42 806 785 194.5
D 13 172 132501 677.04 806 785 194.5
D 2 136 38918 196.01 806 785 194.5

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