ASTROSAT CZTI

Data Quality Report

Orbit 16440

Creation date: 2024-06-27T17:22:42.759922
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_069T04_9000002428_16440cztM0_level2.evt modeM0/AS1A05_069T04_9000002428_16440cztM0_level2_quad_clean.evt
Size (bytes)580,530,24089,340,480
Size553.6 MB 85.2 MB
Events in quadrant A4,269,547535,192
Events in quadrant B3,955,909609,472
Events in quadrant C4,615,240565,363
Events in quadrant D4,302,414543,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169443
B0159842
C0181842
D0172962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64695468.440254%
B64691672.581543%
C64692323.586335%
D64692113.261710%

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 7634 6470 515 515 6.75% 7.96%
B 7635 6471 115 115 1.51% 1.78%
C 7635 6471 24 24 0.31% 0.37%
D 7635 6470 181 181 2.37% 2.80%

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 1415662 9470.27 734 718 149.4
A 15 223 21529 139.29 734 718 149.4
A 0 226 6542 38.98 734 718 149.4
B 0 229 422451 2834.64 784 765 148.8
B 15 35 173922 1163.99 784 765 148.8
B 4 173 46769 309.25 784 765 148.8
C 3 233 1491460 8514.99 750 756 175.1
C 14 238 123354 700.29 750 756 175.1
C 7 247 43656 245.05 750 756 175.1
D 5 222 958227 5248.56 750 729 182.4
D 12 218 341149 1866.02 750 729 182.4
D 13 168 51164 276.46 750 729 182.4

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