ASTROSAT CZTI

Data Quality Report

Orbit 20370

Creation date: 2024-06-27T18:14:32.514907
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/AS1A05_205T01_9000003012_20370cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20370cztM0_level2_quad_clean.evt
Size (bytes)555,661,44081,472,320
Size529.9 MB 77.7 MB
Events in quadrant A3,788,476489,396
Events in quadrant B4,242,442491,934
Events in quadrant C3,814,102478,221
Events in quadrant D4,453,271464,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164153
B0174303
C0163723
D0185753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77943254.169874%
B77954335.554843%
C77953844.926235%
D77953464.438743%

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 8364 7797 1 1 0.01% 0.01%
B 8365 7797 58 58 0.69% 0.74%
C 8365 7798 0 0 0.00% 0.00%
D 8365 7798 55 55 0.66% 0.71%

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 12 96 20049 96.13 974 953 198.7
A 6 16 9217 41.6 974 953 198.7
A 3 137 8522 38.1 974 953 198.7
B 7 220 264370 1401.96 968 940 187.9
B 0 198 59256 310.35 968 940 187.9
B 4 80 35606 184.49 968 940 187.9
C 14 238 143317 637.98 941 945 223.2
C 13 61 6482 24.81 941 945 223.2
C 3 233 4481 15.85 941 945 223.2
D 1 52 712606 3052.88 953 923 233.1
D 7 238 116900 497.5 953 923 233.1
D 2 234 34654 144.69 953 923 233.1

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