ASTROSAT CZTI

Data Quality Report

Orbit 34312

Creation date: 2022-02-01T15:05:30.994591
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/AS1A11_091T01_9000004894_34312cztM0_level2.evt modeM0/AS1A11_091T01_9000004894_34312cztM0_level2_quad_clean.evt
Size (bytes)982,823,040122,754,240
Size937.3 MB 117.1 MB
Events in quadrant A4,631,002771,824
Events in quadrant B6,393,265780,266
Events in quadrant C5,629,755761,346
Events in quadrant D12,427,407701,955

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204853
B0257932
C0228862
D0440872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10131160.157931%
B101313523.474484%
C101311961.934656%
D10131204020.136216%

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 12758 10133 2 2 0.02% 0.02%
B 12758 10133 202 202 1.58% 1.99%
C 12758 10133 143 143 1.12% 1.41%
D 12758 10132 1710 1710 13.40% 16.88%

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 9 143 36241 150.3 1172 1149 233.5
A 10 83 34004 140.72 1172 1149 233.5
A 13 6 20273 81.91 1172 1149 233.5
B 5 172 955971 4348.37 1151 1119 219.6
B 4 251 404971 1839.13 1151 1119 219.6
B 4 171 171713 776.88 1151 1119 219.6
C 14 254 600576 2306.12 1128 1136 259.9
C 15 214 422925 1622.67 1128 1136 259.9
C 0 10 71690 271.43 1128 1136 259.9
D 12 227 3608097 13002.05 1049 1028 277.4
D 8 195 1234228 4445.2 1049 1028 277.4
D 12 235 1184648 4266.48 1049 1028 277.4

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