ASTROSAT CZTI

Data Quality Report

Orbit 34980

Creation date: 2022-03-19T17:10:36.816446
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/AS1A10_123T09_9000005012_34980cztM0_level2.evt modeM0/AS1A10_123T09_9000005012_34980cztM0_level2_quad_clean.evt
Size (bytes)111,165,12017,919,360
Size106.0 MB 17.1 MB
Events in quadrant A688,372106,066
Events in quadrant B867,913105,208
Events in quadrant C773,183109,875
Events in quadrant D928,331105,641

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031632
B036991
C033161
D038911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155610.064267%
B1556623.984576%
C1556171.092545%
D1556201.285347%

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 1556 1556 0 0 0.00% 0.00%
B 1556 1556 55 55 3.53% 3.53%
C 1556 1556 14 14 0.90% 0.90%
D 1555 1555 18 18 1.16% 1.16%

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 30375 829.11 168 165 36.4
A 15 169 4626 122.43 168 165 36.4
A 13 254 2273 57.85 168 165 36.4
B 5 172 192830 5661.38 164 159 34.0
B 5 255 17975 523.5 164 159 34.0
B 0 190 7244 208.18 164 159 34.0
C 15 214 68130 1731.35 160 161 39.3
C 0 10 65523 1664.95 160 161 39.3
C 14 67 9904 248.18 160 161 39.3
D 8 195 197280 4757.06 161 156 41.4
D 2 249 62412 1502.38 161 156 41.4
D 2 207 21440 513.63 161 156 41.4

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