ASTROSAT CZTI

Data Quality Report

Orbit 26884

Creation date: 2024-06-27T19:34:02.739878
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/AS1T03_224T01_9000003872_26884cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26884cztM0_level2_quad_clean.evt
Size (bytes)590,857,92097,182,720
Size563.5 MB 92.7 MB
Events in quadrant A4,378,047599,702
Events in quadrant B4,629,254613,587
Events in quadrant C3,977,852599,378
Events in quadrant D4,377,130585,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178760
B0187170
C0165900
D0179530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78423534.501403%
B78424075.190003%
C78424185.330273%
D78422853.634277%

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 8437 7842 9 9 0.11% 0.11%
B 8437 7842 28 28 0.33% 0.36%
C 8437 7843 7 7 0.08% 0.09%
D 8437 7843 41 41 0.49% 0.52%

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 0 13 545952 2740.27 993 971 198.9
A 13 254 12596 58.45 993 971 198.9
A 3 137 9603 43.4 993 971 198.9
B 3 64 513579 2676.19 987 961 191.5
B 0 190 177862 923.54 987 961 191.5
B 10 246 50802 260.2 987 961 191.5
C 14 238 153581 677.15 958 961 225.4
C 15 208 60521 264.26 958 961 225.4
C 3 233 28664 122.91 958 961 225.4
D 11 176 305257 1338.82 968 946 227.3
D 2 250 182506 798.78 968 946 227.3
D 1 52 75014 325.86 968 946 227.3

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