ASTROSAT CZTI

Data Quality Report

Orbit 12352

Creation date: 2024-06-27T16:26:01.765879
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_210T04_9000001828_12352cztM0_level2.evt modeM0/AS1A04_210T04_9000001828_12352cztM0_level2_quad_clean.evt
Size (bytes)378,573,12055,503,360
Size361.0 MB 52.9 MB
Events in quadrant A3,143,626331,860
Events in quadrant B2,719,895338,587
Events in quadrant C2,396,314339,962
Events in quadrant D2,868,045322,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127032
B0112631
C0105241
D0119311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49511523.070087%
B49511462.948899%
C4951601.211876%
D49511543.110483%

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 5292 4953 2 2 0.04% 0.04%
B 5292 4953 14 14 0.26% 0.28%
C 5292 4953 15 15 0.28% 0.30%
D 5292 4953 70 70 1.32% 1.41%

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 13 251 218104 1744.98 598 582 124.7
A 8 15 196015 1567.78 598 582 124.7
A 1 162 171530 1371.36 598 582 124.7
B 10 245 138979 1188.58 601 586 116.4
B 4 239 106037 905.66 601 586 116.4
B 0 85 36825 311.24 601 586 116.4
C 15 208 104399 752.79 587 590 137.9
C 13 61 4022 24.89 587 590 137.9
C 14 234 3078 18.04 587 590 137.9
D 1 52 229100 1588.06 582 564 143.9
D 13 104 131103 907.1 582 564 143.9
D 10 253 100016 691.08 582 564 143.9

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