ASTROSAT CZTI

Data Quality Report

Orbit 20882

Creation date: 2024-06-27T18:20:42.614826
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/AS1A06_002T03_9000003080_20882cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20882cztM0_level2_quad_clean.evt
Size (bytes)447,287,04088,456,320
Size426.6 MB 84.4 MB
Events in quadrant A2,974,812573,816
Events in quadrant B3,349,451576,300
Events in quadrant C3,027,423560,330
Events in quadrant D3,766,341528,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013524594
B014708737
C013549606
D016525929

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01366
B01366
C01368
D01366

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6302280.444303%
B6302991.570930%
C6298651.032074%
D62792884.586718%

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 8484 6358 0 0 0.00% 0.00%
B 8483 6357 17 17 0.20% 0.27%
C 8500 6360 2 2 0.02% 0.03%
D 8493 6333 237 237 2.79% 3.74%

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 6 16 22886 143.1 762 747 154.7
A 12 96 20766 129.4 762 747 154.7
A 0 226 6432 36.75 762 747 154.7
B 7 220 139250 954.05 763 745 145.2
B 0 189 75124 512.34 763 745 145.2
B 0 197 49250 334.11 763 745 145.2
C 14 238 116995 674.54 731 736 172.4
C 9 54 34362 195.1 731 736 172.4
C 10 91 19055 106.29 731 736 172.4
D 1 239 723436 4141.3 722 703 174.5
D 1 52 209520 1196.53 722 703 174.5
D 9 1 31557 176.8 722 703 174.5

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