ASTROSAT CZTI

Data Quality Report

Orbit 18964

Creation date: 2024-06-27T17:57:09.399063
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_205T01_9000002824_18964cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18964cztM0_level2_quad_clean.evt
Size (bytes)534,003,84088,594,560
Size509.3 MB 84.5 MB
Events in quadrant A3,151,841566,886
Events in quadrant B4,049,445571,498
Events in quadrant C3,155,930555,460
Events in quadrant D5,375,417536,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133601
B0159851
C0132441
D0201931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480640.987654%
B64812243.456257%
C6481841.296096%
D648075611.666667%

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 7345 6481 12 12 0.16% 0.19%
B 7346 6482 108 108 1.47% 1.67%
C 7346 6482 0 0 0.00% 0.00%
D 7345 6481 474 474 6.45% 7.31%

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 14 235 46197 281.35 803 787 161.4
A 15 191 12833 74.64 803 787 161.4
A 13 254 7321 40.48 803 787 161.4
B 3 112 712233 4735.0 792 772 150.3
B 7 220 129944 859.68 792 772 150.3
B 0 189 71842 472.99 792 772 150.3
C 14 238 119577 652.3 778 783 182.1
C 13 61 5536 26.1 778 783 182.1
C 7 220 1996 6.66 778 783 182.1
D 7 238 1846743 9870.81 757 736 187.0
D 12 218 307381 1639.67 757 736 187.0
D 12 17 189911 1011.54 757 736 187.0

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