ASTROSAT CZTI

Data Quality Report

Orbit 20481

Creation date: 2024-06-27T18:15:53.446174
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/AS1A05_208T03_9000003026_20481cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20481cztM0_level2_quad_clean.evt
Size (bytes)530,565,12098,242,560
Size506.0 MB 93.7 MB
Events in quadrant A3,193,467655,641
Events in quadrant B3,513,655673,452
Events in quadrant C3,242,396640,325
Events in quadrant D5,700,229574,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133182
B0143262
C0134502
D0211162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175360.582996%
B6175711.149798%
C6175550.890688%
D61745198.406220%

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 7575 6176 12 12 0.16% 0.19%
B 7575 6176 9 9 0.12% 0.15%
C 7575 6175 2 2 0.03% 0.03%
D 7573 6173 526 526 6.95% 8.52%

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 100870 630.0 794 780 158.9
A 9 143 29395 180.11 794 780 158.9
A 0 226 6921 38.65 794 780 158.9
B 0 189 138255 922.84 806 788 149.0
B 7 220 68037 451.45 806 788 149.0
B 0 197 46283 305.41 806 788 149.0
C 14 238 123020 678.85 777 785 180.1
C 9 221 64013 351.15 777 785 180.1
C 9 54 12571 65.46 777 785 180.1
D 7 38 855549 4717.31 751 731 181.2
D 1 52 844973 4658.94 751 731 181.2
D 5 222 283787 1562.04 751 731 181.2

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