ASTROSAT CZTI

Data Quality Report

Orbit 20076

Creation date: 2024-06-27T18:10:57.962927
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_180T01_9000002992_20076cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20076cztM0_level2_quad_clean.evt
Size (bytes)548,049,60075,303,360
Size522.7 MB 71.8 MB
Events in quadrant A4,022,245474,268
Events in quadrant B3,753,887473,128
Events in quadrant C3,550,786452,152
Events in quadrant D4,847,673444,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160302
B0151132
C0141852
D0189822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62432173.475893%
B62431692.707032%
C62421332.130727%
D62421582.531240%

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 7573 6244 62 62 0.82% 0.99%
B 7573 6244 19 19 0.25% 0.30%
C 7572 6243 0 0 0.00% 0.00%
D 7572 6243 53 53 0.70% 0.85%

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 14 238 362578 1985.05 926 916 182.2
A 14 254 56699 306.18 926 916 182.2
A 4 2 15245 78.65 926 916 182.2
B 4 80 94970 555.58 909 893 169.3
B 0 198 34199 196.69 909 893 169.3
B 12 111 19044 107.19 909 893 169.3
C 14 238 140732 706.26 873 884 198.0
C 13 61 6115 26.42 873 884 198.0
C 3 233 4864 20.1 873 884 198.0
D 1 52 884988 4136.11 895 871 213.8
D 12 218 493913 2306.57 895 871 213.8
D 7 223 26977 122.13 895 871 213.8

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