ASTROSAT CZTI

Data Quality Report

Orbit 20200217_A07_027T14_9000003510_level2

Creation date: 2020-02-18T10:49:14.843344
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_027T14_9000003510cztM0_level2_bc.evt modeM0/AS1A07_027T14_9000003510cztM0_level2_quad_clean.evt
Size (bytes)719,023,680167,604,480
Size685.7 MB 159.8 MB
Events in quadrant A2,901,2001,029,615
Events in quadrant B4,090,8101,041,860
Events in quadrant C2,909,5381,013,905
Events in quadrant D10,849,488957,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305390
B0350140
C0306680
D0574030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149552701.805416%
B149554953.309930%
C149553112.079572%
D14955226615.152123%

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 15565 14954 0 0 0.00% 0.00%
B 15565 14953 20 20 0.13% 0.13%
C 15565 14954 2 2 0.01% 0.01%
D 15565 14954 531 531 3.41% 3.55%

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 13 254 24335 142.29 745 729 165.9
A 5 168 11874 67.18 745 729 165.9
A 2 79 7176 38.86 745 729 165.9
B 0 229 383029 2641.5 748 729 144.7
B 0 189 344130 2372.72 748 729 144.7
B 3 64 307368 2118.72 748 729 144.7
C 7 247 60830 349.32 723 717 172.1
C 10 9 26042 147.17 723 717 172.1
C 4 175 17012 94.69 723 717 172.1
D 8 195 5373384 31522.58 706 677 170.4
D 1 52 1383048 8110.6 706 677 170.4
D 12 227 609637 3572.87 706 677 170.4

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