ASTROSAT CZTI

Data Quality Report

Orbit 09090

Creation date: 2024-06-27T15:41:01.450002
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/AS1A03_120T01_9000001266_09090cztM0_level2.evt modeM0/AS1A03_120T01_9000001266_09090cztM0_level2_quad_clean.evt
Size (bytes)469,290,24065,289,600
Size447.6 MB 62.3 MB
Events in quadrant A3,470,570389,721
Events in quadrant B3,310,523396,797
Events in quadrant C3,082,254383,258
Events in quadrant D3,919,033364,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139583
B0135212
C0131512
D0157542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336881.388889%
B63361031.625631%
C6336430.678662%
D63361622.556818%

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 7651 6337 3 3 0.04% 0.05%
B 7651 6336 1 1 0.01% 0.02%
C 7651 6337 1 1 0.01% 0.02%
D 7651 6337 110 110 1.44% 1.74%

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 8 5 143036 862.1 819 803 165.0
A 1 162 80934 485.69 819 803 165.0
A 15 174 23439 137.2 819 803 165.0
B 0 214 84701 544.49 821 804 154.1
B 12 111 16786 103.72 821 804 154.1
B 0 229 15075 92.62 821 804 154.1
C 14 234 18968 101.39 784 788 179.3
C 13 61 5825 28.09 784 788 179.3
C 8 222 4839 22.59 784 788 179.3
D 12 233 692749 3613.06 776 755 191.5
D 1 52 132854 689.72 776 755 191.5
D 8 195 80480 416.26 776 755 191.5

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