ASTROSAT CZTI

Data Quality Report

Orbit 26633

Creation date: 2024-06-27T19:31:12.324146
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/AS1A09_145T01_9000003848_26633cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26633cztM0_level2_quad_clean.evt
Size (bytes)587,145,60093,121,920
Size559.9 MB 88.8 MB
Events in quadrant A3,523,449617,192
Events in quadrant B3,907,884614,180
Events in quadrant C3,549,883588,977
Events in quadrant D6,386,962573,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141140
B0159720
C0143090
D0228630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6114681.112202%
B6114661.079490%
C6114971.586523%
D6113119019.466710%

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 7419 6115 10 10 0.13% 0.16%
B 7419 6115 6 6 0.08% 0.10%
C 7419 6115 15 15 0.20% 0.25%
D 7419 6115 1039 1039 14.00% 16.99%

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 145505 838.78 876 864 172.4
A 13 254 9953 52.71 876 864 172.4
A 0 226 7816 40.31 876 864 172.4
B 0 189 477640 3009.54 851 836 158.4
B 10 245 59403 369.67 851 836 158.4
B 3 112 19210 115.97 851 836 158.4
C 3 233 166850 882.81 817 826 188.1
C 14 238 134848 712.64 817 826 188.1
C 2 16 52651 275.57 817 826 188.1
D 12 233 2118840 11084.55 780 760 191.1
D 1 52 685785 3584.94 780 760 191.1
D 7 80 557754 2914.92 780 760 191.1

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