ASTROSAT CZTI

Data Quality Report

Orbit 06742

Creation date: 2024-06-27T15:11:04.130892
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/AS1G06_068T01_9000000930_06742cztM0_level2.evt modeM0/AS1G06_068T01_9000000930_06742cztM0_level2_quad_clean.evt
Size (bytes)191,033,28017,982,720
Size182.2 MB 17.1 MB
Events in quadrant A1,140,24099,718
Events in quadrant B1,158,906101,157
Events in quadrant C1,066,977100,264
Events in quadrant D2,279,13095,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046322
B047601
C044281
D082121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2026542.665350%
B2026462.270484%
C2026351.727542%
D202641020.236920%

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 3176 2027 2 2 0.06% 0.10%
B 3176 2027 0 0 0.00% 0.00%
C 3176 2027 0 0 0.00% 0.00%
D 3176 2027 277 277 8.72% 13.67%

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 15 234 38616 655.01 279 273 58.5
A 4 2 15984 268.39 279 273 58.5
A 8 15 6635 108.68 279 273 58.5
B 4 48 30825 553.18 278 272 55.2
B 0 214 25491 456.6 278 272 55.2
B 0 228 14227 252.66 278 272 55.2
C 9 247 7167 108.22 270 272 63.7
C 13 61 2152 29.51 270 272 63.7
C 8 222 1027 11.85 270 272 63.7
D 2 33 903911 14288.26 254 246 63.2
D 7 203 128670 2030.57 254 246 63.2
D 8 195 111778 1763.48 254 246 63.2

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