ASTROSAT CZTI

Data Quality Report

Orbit 06141

Creation date: 2024-06-27T15:03:18.247586
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/AS1C02_018T01_9000000798_06141cztM0_level2.evt modeM0/AS1C02_018T01_9000000798_06141cztM0_level2_quad_clean.evt
Size (bytes)538,764,48088,128,000
Size513.8 MB 84.0 MB
Events in quadrant A3,907,783519,304
Events in quadrant B4,399,715528,844
Events in quadrant C3,688,949546,074
Events in quadrant D3,779,587521,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170282
B0184493
C0167731
D0171011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79611902.386635%
B79603324.170854%
C79611401.758573%
D79611041.306369%

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 7961 7961 1 1 0.01% 0.01%
B 7961 7961 62 62 0.78% 0.78%
C 7961 7961 2 2 0.03% 0.03%
D 7961 7961 11 11 0.14% 0.14%

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 15 130147 652.34 957 936 198.1
A 4 2 55004 272.97 957 936 198.1
A 12 227 10669 49.14 957 936 198.1
B 3 64 378315 1992.05 965 941 189.4
B 0 219 86125 449.66 965 941 189.4
B 15 204 53604 277.99 965 941 189.4
C 9 54 15654 66.73 939 946 220.4
C 13 61 7490 29.69 939 946 220.4
C 9 16 4797 17.47 939 946 220.4
D 13 169 116677 503.25 936 907 230.0
D 8 195 55761 238.45 936 907 230.0
D 5 97 24437 102.28 936 907 230.0

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