ASTROSAT CZTI

Data Quality Report

Orbit 48431

Creation date: 2024-09-12T10:21:24.089881
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_029T01_9000006426_48431cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48431cztM0_level2_quad_clean.evt
Size (bytes)460,362,240107,616,960
Size439.0 MB 102.6 MB
Events in quadrant A6,777,637708,693
Events in quadrant B3,095,040745,977
Events in quadrant C3,222,550708,953
Events in quadrant D3,444,841644,489

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250391
B0136851
C0143051
D0147161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64572303.562026%
B6457871.347375%
C6458741.145866%
D6458861.331682%

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 7577 6458 73 73 0.96% 1.13%
B 7577 6458 24 24 0.32% 0.37%
C 7578 6459 27 27 0.36% 0.42%
D 7578 6459 31 31 0.41% 0.48%

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 3802365 25317.41 716 700 150.2
A 13 248 203287 1349.14 716 700 150.2
A 13 254 12081 75.79 716 700 150.2
B 12 16 151317 1058.44 719 697 142.3
B 5 255 49771 344.85 719 697 142.3
B 0 197 31899 219.26 719 697 142.3
C 15 208 350971 2077.71 713 718 168.6
C 12 2 78762 462.96 713 718 168.6
C 14 67 5567 28.76 713 718 168.6
D 2 165 325854 1816.52 713 691 179.0
D 5 222 140184 779.28 713 691 179.0
D 7 38 91841 509.21 713 691 179.0

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