ASTROSAT CZTI

Data Quality Report

Orbit 20035

Creation date: 2024-06-27T18:10:23.864073
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_180T01_9000002986_20035cztM0_level2.evt modeM0/AS1A05_180T01_9000002986_20035cztM0_level2_quad_clean.evt
Size (bytes)487,635,840108,786,240
Size465.0 MB 103.7 MB
Events in quadrant A3,279,626736,040
Events in quadrant B3,310,334733,661
Events in quadrant C3,287,353707,212
Events in quadrant D4,459,002673,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134141
B0134471
C0133161
D0172881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6364590.927090%
B6365781.225452%
C63651021.602514%
D63653765.907306%

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 7309 6365 0 0 0.00% 0.00%
B 7310 6366 0 0 0.00% 0.00%
C 7310 6366 0 0 0.00% 0.00%
D 7310 6366 228 228 3.12% 3.58%

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 11 29 22761 128.67 840 826 170.5
A 14 238 15860 88.19 840 826 170.5
A 14 254 8139 42.9 840 826 170.5
B 0 198 18486 111.74 833 817 158.1
B 12 111 18127 109.47 833 817 158.1
B 11 111 15868 95.18 833 817 158.1
C 14 238 128321 674.21 808 817 189.1
C 13 61 5648 25.55 808 817 189.1
C 4 254 5085 22.57 808 817 189.1
D 1 52 1302663 6754.32 801 782 192.7
D 8 195 114151 588.17 801 782 192.7
D 2 234 23899 119.93 801 782 192.7

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