ASTROSAT CZTI

Data Quality Report

Orbit 26410

Creation date: 2024-06-27T19:28:40.716934
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_127T02_9000003818_26410cztM0_level2.evt modeM0/AS1A09_127T02_9000003818_26410cztM0_level2_quad_clean.evt
Size (bytes)704,390,400126,253,440
Size671.8 MB 120.4 MB
Events in quadrant A3,738,751848,824
Events in quadrant B4,618,805843,612
Events in quadrant C5,995,555776,608
Events in quadrant D6,427,738788,062

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165930
B0189180
C0229470
D0246190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8152630.772816%
B81522763.385672%
C81527138.746320%
D81526948.513248%

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 8727 8153 1 1 0.01% 0.01%
B 8727 8153 171 171 1.96% 2.10%
C 8727 8153 439 439 5.03% 5.38%
D 8727 8153 414 414 4.74% 5.08%

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 46398 235.16 956 935 193.3
A 13 254 13732 66.19 956 935 193.3
A 3 137 8708 40.21 956 935 193.3
B 5 172 738131 4127.81 937 912 178.6
B 12 16 66362 366.47 937 912 178.6
B 0 244 58081 320.1 937 912 178.6
C 2 16 1748946 8454.77 880 884 206.8
C 3 233 631076 3048.02 880 884 206.8
C 14 238 139313 669.53 880 884 206.8
D 1 52 2644601 12310.59 901 877 214.8
D 7 80 140011 647.88 901 877 214.8
D 12 233 124680 576.49 901 877 214.8

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