ASTROSAT CZTI

Data Quality Report

Orbit 43790

Creation date: 2024-06-27T22:55:47.424266
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/AS1A13_018T01_9000005906_43790cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43790cztM0_level2_quad_clean.evt
Size (bytes)635,952,960105,387,840
Size606.5 MB 100.5 MB
Events in quadrant A4,758,761725,113
Events in quadrant B4,249,584760,478
Events in quadrant C8,646,237615,484
Events in quadrant D5,384,322637,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185392
B0169602
C0301766
D0204182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64892593.991370%
B64892033.128371%
C6488140621.670777%
D64884747.305795%

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 7569 6490 94 94 1.24% 1.45%
B 7569 6490 64 64 0.85% 0.99%
C 7568 6489 1357 1357 17.93% 20.91%
D 7568 6489 291 291 3.85% 4.48%

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 10 83 1000957 6279.49 767 754 159.3
A 15 223 736550 4619.49 767 754 159.3
A 13 6 14207 84.46 767 754 159.3
B 7 205 376084 2478.44 772 749 151.4
B 0 200 264699 1742.93 772 749 151.4
B 0 219 166518 1094.62 772 749 151.4
C 15 174 5028887 29561.23 725 730 170.1
C 15 158 453370 2661.13 725 730 170.1
C 15 190 89464 521.68 725 730 170.1
D 12 33 998132 5256.79 743 720 189.7
D 2 120 463625 2439.71 743 720 189.7
D 1 52 259846 1365.7 743 720 189.7

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