ASTROSAT CZTI

Data Quality Report

Orbit 13828

Creation date: 2024-06-27T16:46:38.526690
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_199T01_9000002040_13828cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13828cztM0_level2_quad_clean.evt
Size (bytes)547,891,20086,454,720
Size522.5 MB 82.4 MB
Events in quadrant A3,674,271526,031
Events in quadrant B3,741,321536,078
Events in quadrant C3,625,086525,121
Events in quadrant D5,032,093497,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158383
B0160442
C0158182
D0198232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76591872.441572%
B76592212.885494%
C76591251.632067%
D76592673.486095%

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 7930 7660 0 0 0.00% 0.00%
B 7930 7660 5 5 0.06% 0.07%
C 7930 7661 0 0 0.00% 0.00%
D 7930 7660 139 139 1.75% 1.81%

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 23 67223 345.2 928 906 192.1
A 8 15 23183 115.96 928 906 192.1
A 0 226 12185 58.71 928 906 192.1
B 10 244 63297 348.59 926 901 179.0
B 0 214 22221 119.11 926 901 179.0
B 12 111 21658 115.96 926 901 179.0
C 3 233 101570 476.27 904 908 211.4
C 13 61 6541 26.65 904 908 211.4
C 14 220 2445 7.27 904 908 211.4
D 1 52 1042063 4379.61 891 869 237.7
D 8 195 302098 1267.07 891 869 237.7
D 10 157 182514 764.06 891 869 237.7

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