ASTROSAT CZTI

Data Quality Report

Orbit 15635

Creation date: 2024-06-27T17:11:25.564711
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/AS1T02_086T01_9000002316_15635cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15635cztM0_level2_quad_clean.evt
Size (bytes)548,714,880102,513,600
Size523.3 MB 97.8 MB
Events in quadrant A3,290,053669,527
Events in quadrant B3,396,206676,377
Events in quadrant C4,137,872662,616
Events in quadrant D5,326,601616,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141843
B0143252
C0169242
D0203302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68831331.932297%
B68831301.888711%
C68832173.152695%
D68836689.705070%

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 8714 6884 0 0 0.00% 0.00%
B 8714 6884 0 0 0.00% 0.00%
C 8714 6884 0 0 0.00% 0.00%
D 8714 6884 604 604 6.93% 8.77%

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 3 80 16706 93.77 847 827 169.3
A 15 69 10970 59.89 847 827 169.3
A 0 226 7602 40.01 847 827 169.3
B 0 189 33197 202.55 843 821 159.8
B 0 219 22094 133.09 843 821 159.8
B 4 216 22006 132.53 843 821 159.8
C 3 233 838005 4473.88 810 817 187.1
C 14 238 127438 676.65 810 817 187.1
C 7 247 9771 47.85 810 817 187.1
D 1 52 1957384 10169.76 799 777 192.4
D 12 110 257294 1333.29 799 777 192.4
D 4 95 47303 241.83 799 777 192.4

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