ASTROSAT CZTI

Data Quality Report

Orbit 15231

Creation date: 2024-06-27T17:05:37.580758
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/AS1A04_105T01_9000002248_15231cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15231cztM0_level2_quad_clean.evt
Size (bytes)762,111,36099,673,920
Size726.8 MB 95.1 MB
Events in quadrant A9,302,785574,982
Events in quadrant B4,418,083637,570
Events in quadrant C4,420,473631,112
Events in quadrant D4,382,065601,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332203
B0185022
C0182392
D0190492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8242155818.903179%
B82421822.208202%
C82421261.528755%
D82421351.637952%

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 9153 8244 1172 1172 12.80% 14.22%
B 9153 8246 42 42 0.46% 0.51%
C 9153 8246 15 15 0.16% 0.18%
D 9153 8246 21 21 0.23% 0.25%

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 0 253 5414421 28040.97 945 927 193.1
A 12 189 217484 1121.73 945 927 193.1
A 13 248 18292 89.95 945 927 193.1
B 3 64 247856 1271.06 1004 981 194.2
B 0 189 62802 318.29 1004 981 194.2
B 10 16 43776 220.33 1004 981 194.2
C 3 233 612769 2681.57 972 978 228.1
C 4 254 8586 33.35 972 978 228.1
C 13 61 6972 26.27 972 978 228.1
D 7 223 342585 1436.54 970 938 237.8
D 2 16 168048 702.65 970 938 237.8
D 13 172 70769 293.62 970 938 237.8

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