ASTROSAT CZTI

Data Quality Report

Orbit 43844

Creation date: 2024-06-27T22:56:28.097440
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_43844cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43844cztM0_level2_quad_clean.evt
Size (bytes)858,205,440114,963,840
Size818.4 MB 109.6 MB
Events in quadrant A6,267,039808,503
Events in quadrant B4,995,794840,933
Events in quadrant C13,224,589565,798
Events in quadrant D6,675,036719,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024331257
B020367199
C045628897
D025548415

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01591
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78564645.906314%
B78653414.335664%
C7785293137.649326%
D78376298.026030%

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 8199 7926 299 299 3.65% 3.77%
B 8200 7925 155 155 1.89% 1.96%
C 8200 7881 2651 2651 32.33% 33.64%
D 8200 7909 542 542 6.61% 6.85%

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 15 223 1668106 9392.45 857 841 177.5
A 10 83 1095689 6167.77 857 841 177.5
A 2 79 45659 252.48 857 841 177.5
B 5 235 595396 3513.04 866 844 169.2
B 5 172 222437 1309.33 866 844 169.2
B 0 213 217160 1278.15 866 844 169.2
C 3 233 6070656 35925.99 717 721 169.0
C 15 174 2036133 12046.95 717 721 169.0
C 15 158 1638552 9693.79 717 721 169.0
D 5 235 936145 4425.39 829 800 211.4
D 10 102 685222 3238.2 829 800 211.4
D 4 221 360245 1700.64 829 800 211.4

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