ASTROSAT CZTI

Data Quality Report

Orbit 14620

Creation date: 2024-06-27T16:57:35.606220
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_016T01_9000002152_14620cztM0_level2.evt modeM0/AS1A04_016T01_9000002152_14620cztM0_level2_quad_clean.evt
Size (bytes)517,072,320104,051,520
Size493.1 MB 99.2 MB
Events in quadrant A3,431,889681,464
Events in quadrant B3,340,280696,919
Events in quadrant C4,150,653685,048
Events in quadrant D4,305,515644,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142443
B0139142
C0174762
D0172002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63611011.587801%
B63611642.578211%
C63611071.682125%
D63613755.895299%

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 8917 6364 3 3 0.03% 0.05%
B 8917 6364 3 3 0.03% 0.05%
C 8917 6364 0 0 0.00% 0.00%
D 8917 6364 270 270 3.03% 4.24%

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 1 162 105123 628.81 829 813 165.9
A 1 178 39220 231.53 829 813 165.9
A 1 161 35367 208.3 829 813 165.9
B 0 229 32962 204.15 832 810 157.5
B 0 189 26693 164.34 832 810 157.5
B 12 111 18989 115.43 832 810 157.5
C 3 233 945312 4978.83 822 826 189.7
C 13 61 5875 26.62 822 826 189.7
C 14 234 1975 6.06 822 826 189.7
D 10 199 1042033 5516.28 797 779 188.8
D 1 52 67055 351.11 797 779 188.8
D 12 110 59040 308.65 797 779 188.8

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