ASTROSAT CZTI

Data Quality Report

Orbit 04930

Creation date: 2024-06-27T14:48:59.814372
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/AS1G05_021T01_9000000624_04930cztM0_level2.evt modeM0/AS1G05_021T01_9000000624_04930cztM0_level2_quad_clean.evt
Size (bytes)170,665,92031,576,320
Size162.8 MB 30.1 MB
Events in quadrant A976,169208,352
Events in quadrant B1,003,217208,911
Events in quadrant C1,997,667194,202
Events in quadrant D1,052,715198,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041652
B042041
C073411
D044551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2009723.583873%
B2009723.583873%
C200929014.435042%
D2009653.235441%

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 2909 2009 0 0 0.00% 0.00%
B 2909 2009 0 0 0.00% 0.00%
C 2909 2009 175 175 6.02% 8.71%
D 2909 2009 2 2 0.07% 0.10%

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 13 251 5790 104.34 251 245 53.1
A 0 31 3268 56.88 251 245 53.1
A 12 194 2552 43.41 251 245 53.1
B 15 204 6970 131.27 254 247 51.2
B 4 80 6100 114.29 254 247 51.2
B 12 111 4492 82.89 254 247 51.2
C 9 247 1052732 18413.71 241 243 57.2
C 13 61 1951 29.88 241 243 57.2
C 8 222 1184 16.46 241 243 57.2
D 2 136 69359 1126.13 246 238 61.4
D 13 235 13006 208.02 246 238 61.4
D 12 22 12953 207.16 246 238 61.4

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