ASTROSAT CZTI

Data Quality Report

Orbit 27433

Creation date: 2024-06-27T19:40:02.160590
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_249T01_9000003934_27433cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27433cztM0_level2_quad_clean.evt
Size (bytes)504,843,84084,026,880
Size481.5 MB 80.1 MB
Events in quadrant A3,355,271529,462
Events in quadrant B3,434,401529,152
Events in quadrant C3,421,302506,039
Events in quadrant D4,607,728496,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141420
B0143200
C0143350
D0181780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6929600.865926%
B6930731.053391%
C69301011.457431%
D69301402.020202%

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 7569 6929 0 0 0.00% 0.00%
B 7570 6930 2 2 0.03% 0.03%
C 7570 6931 5 5 0.07% 0.07%
D 7570 6931 93 93 1.23% 1.34%

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 11172 58.77 869 851 175.6
A 3 137 8274 42.27 869 851 175.6
A 0 226 7439 37.51 869 851 175.6
B 0 190 24504 144.89 853 830 163.4
B 12 111 20178 118.41 853 830 163.4
B 0 189 19118 111.92 853 830 163.4
C 14 238 133213 683.55 824 829 193.7
C 10 22 65525 334.05 824 829 193.7
C 2 16 5770 25.51 824 829 193.7
D 1 52 1083488 5462.79 833 811 198.2
D 2 250 215821 1084.86 833 811 198.2
D 10 50 129594 649.79 833 811 198.2

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