ASTROSAT CZTI

Data Quality Report

Orbit 30947

Creation date: 2024-06-27T20:21:30.049547
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_058T10_9000004472_30947cztM0_level2.evt modeM0/AS1A10_058T10_9000004472_30947cztM0_level2_quad_clean.evt
Size (bytes)651,988,800115,853,760
Size621.8 MB 110.5 MB
Events in quadrant A3,381,603789,914
Events in quadrant B5,309,326803,060
Events in quadrant C3,694,163778,976
Events in quadrant D6,941,339703,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139582
B0197302
C0149452
D0246922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6205610.983078%
B62061392.239768%
C62052403.867849%
D6205153124.673650%

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 8875 6206 1 1 0.01% 0.02%
B 8876 6207 1 1 0.01% 0.02%
C 8875 6206 38 38 0.43% 0.61%
D 8875 6206 1217 1217 13.71% 19.61%

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 13 254 11153 59.77 871 857 172.3
A 3 243 9973 52.92 871 857 172.3
A 3 137 7869 40.71 871 857 172.3
B 6 159 1779247 11004.02 870 851 161.6
B 0 183 44166 268.02 870 851 161.6
B 0 190 42162 255.62 870 851 161.6
C 0 10 161189 811.15 851 862 197.7
C 14 238 143209 720.18 851 862 197.7
C 3 233 34651 170.95 851 862 197.7
D 13 174 3184906 16873.93 803 785 188.7
D 8 195 286178 1512.41 803 785 188.7
D 2 250 240596 1270.85 803 785 188.7

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