ASTROSAT CZTI

Data Quality Report

Orbit 13165

Creation date: 2024-06-27T16:37:06.186128
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/AS1A04_094T01_9000001942_13165cztM0_level2.evt modeM0/AS1A04_094T01_9000001942_13165cztM0_level2_quad_clean.evt
Size (bytes)1,418,852,160209,263,680
Size1.3 GB 199.6 MB
Events in quadrant A8,773,1331,275,508
Events in quadrant B10,906,0511,290,104
Events in quadrant C8,116,6371,292,793
Events in quadrant D13,941,3331,221,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377814
B0444293
C0369903
D0538153

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182442151.178470%
B1824411886.511730%
C182441770.970182%
D1824414818.117737%

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 20140 18248 4 4 0.02% 0.02%
B 20140 18248 534 534 2.65% 2.93%
C 20140 18248 1 1 0.00% 0.01%
D 20140 18247 1152 1152 5.72% 6.31%

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 12 189 341936 786.58 2128 2081 432.1
A 1 162 77753 175.14 2128 2081 432.1
A 0 23 56227 125.32 2128 2081 432.1
B 4 239 2439907 6278.09 2056 2006 388.3
B 3 209 90452 227.77 2056 2006 388.3
B 3 64 84010 211.18 2056 2006 388.3
C 15 208 23883 45.64 2070 2079 477.7
C 13 61 15216 27.5 2070 2079 477.7
C 8 128 11496 19.71 2070 2079 477.7
D 1 52 3620103 7451.96 2020 1961 485.5
D 10 157 1201042 2469.64 2020 1961 485.5
D 8 195 1062594 2184.49 2020 1961 485.5

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