ASTROSAT CZTI

Data Quality Report

Orbit 44941

Creation date: 2024-06-27T23:08:13.724456
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/AS1A13_017T02_9000006032_44941cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44941cztM0_level2_quad_clean.evt
Size (bytes)652,504,320109,860,480
Size622.3 MB 104.8 MB
Events in quadrant A5,844,634762,374
Events in quadrant B4,013,715785,727
Events in quadrant C3,496,422776,714
Events in quadrant D10,249,492507,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225661
B0166791
C0153211
D0353569

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70912353.314060%
B70922613.680203%
C70921091.536943%
D7091229532.364970%

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 7546 7092 4 4 0.05% 0.06%
B 7547 7093 66 66 0.87% 0.93%
C 7547 7093 19 19 0.25% 0.27%
D 7545 7091 1867 1867 24.74% 26.33%

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 10 83 2542876 14670.81 828 809 173.3
A 13 248 59016 335.92 828 809 173.3
A 0 243 24226 135.14 828 809 173.3
B 5 255 253073 1542.94 826 802 163.5
B 0 168 101062 613.21 826 802 163.5
B 0 219 97607 592.08 826 802 163.5
C 12 2 125005 639.14 822 829 194.3
C 14 254 45909 232.03 822 829 194.3
C 1 3 33158 166.4 822 829 194.3
D 13 187 2428906 14021.75 680 660 173.2
D 5 171 1218935 7034.85 680 660 173.2
D 1 52 1165365 6725.51 680 660 173.2

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