ASTROSAT CZTI

Data Quality Report

Orbit 20819

Creation date: 2024-06-27T18:19:55.973807
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_013T01_9000003070_20819cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20819cztM0_level2_quad_clean.evt
Size (bytes)531,976,320101,957,760
Size507.3 MB 97.2 MB
Events in quadrant A3,266,656671,792
Events in quadrant B3,747,204657,808
Events in quadrant C3,351,558643,132
Events in quadrant D5,271,522628,153

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143561
B0156121
C0146101
D0204071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6988290.414997%
B69881201.717230%
C6988761.087579%
D69881552.218088%

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 7208 6989 4 4 0.06% 0.06%
B 7208 6989 33 33 0.46% 0.47%
C 7208 6989 12 12 0.17% 0.17%
D 7208 6989 157 157 2.18% 2.25%

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 15 174 22505 126.86 844 827 170.9
A 0 226 7341 38.12 844 827 170.9
A 3 137 6824 35.1 844 827 170.9
B 7 220 119241 747.32 830 810 158.5
B 4 171 66421 414.02 830 810 158.5
B 0 219 63507 395.63 830 810 158.5
C 14 238 125989 677.05 796 802 184.9
C 9 54 119749 643.3 796 802 184.9
C 13 61 5681 26.39 796 802 184.9
D 1 20 798213 4040.68 812 788 197.3
D 1 52 623498 3155.37 812 788 197.3
D 1 239 307527 1554.3 812 788 197.3

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