ASTROSAT CZTI

Data Quality Report

Orbit 43854

Creation date: 2024-06-27T22:56:34.604419
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_087T01_9000005908_43854cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43854cztM0_level2_quad_clean.evt
Size (bytes)708,586,560114,145,920
Size675.8 MB 108.9 MB
Events in quadrant A7,613,376708,260
Events in quadrant B3,980,088825,348
Events in quadrant C10,006,653653,068
Events in quadrant D4,040,667741,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278152
B0170502
C0351324
D0173192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7594138618.251251%
B75944796.307611%
C7593188124.772817%
D75933033.990518%

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 7804 7594 630 630 8.07% 8.30%
B 7804 7594 28 28 0.36% 0.37%
C 7803 7593 1156 1156 14.81% 15.22%
D 7803 7593 53 53 0.68% 0.70%

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 3288169 18744.67 844 825 175.4
A 10 83 931403 5306.22 844 825 175.4
A 2 79 46252 259.03 844 825 175.4
B 0 200 119493 660.59 895 866 179.6
B 4 170 105206 581.03 895 866 179.6
B 0 183 96666 533.47 895 866 179.6
C 3 233 5044728 26253.79 810 814 192.1
C 0 239 1312859 6829.25 810 814 192.1
C 15 174 266604 1383.45 810 814 192.1
D 2 249 140584 622.65 894 864 224.4
D 5 235 115291 509.93 894 864 224.4
D 1 52 89462 394.83 894 864 224.4

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