ASTROSAT CZTI

Data Quality Report

Orbit 18139

Creation date: 2024-06-27T17:45:48.753540
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/AS1T03_035T01_9000002696_18139cztM0_level2.evt modeM0/AS1T03_035T01_9000002696_18139cztM0_level2_quad_clean.evt
Size (bytes)213,503,04029,724,480
Size203.6 MB 28.3 MB
Events in quadrant A1,402,929177,695
Events in quadrant B1,446,674183,277
Events in quadrant C1,413,048175,735
Events in quadrant D2,019,356170,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057001
B058071
C057111
D078371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2676471.756353%
B2676632.354260%
C2676742.765321%
D26761114.147982%

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 3511 2677 0 0 0.00% 0.00%
B 3511 2677 1 1 0.03% 0.04%
C 3511 2677 0 0 0.00% 0.00%
D 3511 2677 45 45 1.28% 1.68%

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 0 226 3257 38.4 364 355 75.6
A 12 194 2736 31.51 364 355 75.6
A 3 137 2697 30.99 364 355 75.6
B 7 220 13562 185.54 360 351 71.2
B 0 189 9671 130.89 360 351 71.2
B 12 111 8052 108.15 360 351 71.2
C 14 238 51827 617.95 345 347 83.3
C 5 218 5814 65.62 345 347 83.3
C 3 233 4804 53.5 345 347 83.3
D 7 238 408915 4608.89 351 341 88.6
D 11 176 188288 2120.12 351 341 88.6
D 13 104 20727 229.96 351 341 88.6

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