ASTROSAT CZTI

Data Quality Report

Orbit 25950

Creation date: 2024-06-27T19:23:10.221006
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/AS1A07_068T01_9000003760_25950cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25950cztM0_level2_quad_clean.evt
Size (bytes)469,869,12091,601,280
Size448.1 MB 87.4 MB
Events in quadrant A3,336,324592,011
Events in quadrant B3,301,190595,775
Events in quadrant C3,328,228566,834
Events in quadrant D3,821,541564,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139150
B0138980
C0140750
D0155640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6513661.013358%
B6513771.182251%
C65131251.919238%
D6513851.305082%

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 7598 6513 2 2 0.03% 0.03%
B 7598 6513 0 0 0.00% 0.00%
C 7598 6514 1 1 0.01% 0.02%
D 7598 6513 20 20 0.26% 0.31%

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 13 31723 180.84 858 842 170.8
A 13 254 8679 45.89 858 842 170.8
A 3 137 7727 40.32 858 842 170.8
B 12 111 19359 116.7 841 822 158.8
B 11 111 17743 106.53 841 822 158.8
B 14 111 16322 97.58 841 822 158.8
C 14 238 132312 695.73 814 820 189.0
C 2 16 10480 51.11 814 820 189.0
C 3 233 6948 32.42 814 820 189.0
D 1 52 470305 2425.42 827 807 193.6
D 12 1 188551 969.88 827 807 193.6
D 2 234 24587 122.85 827 807 193.6

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