ASTROSAT CZTI

Data Quality Report

Orbit 25221

Creation date: 2024-06-27T19:15:13.826037
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_097T01_9000003692_25221cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25221cztM0_level2_quad_clean.evt
Size (bytes)690,344,640104,371,200
Size658.4 MB 99.5 MB
Events in quadrant A4,016,204667,585
Events in quadrant B5,117,293658,939
Events in quadrant C4,194,207643,143
Events in quadrant D7,016,645613,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173590
B0209120
C0175760
D0266010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8311941.131031%
B83116427.724702%
C83111661.997353%
D83126297.567372%

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 9056 8314 0 0 0.00% 0.00%
B 9056 8314 193 193 2.13% 2.32%
C 9056 8314 0 0 0.00% 0.00%
D 9057 8315 415 415 4.58% 4.99%

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 13 254 11958 51.55 1042 1018 212.2
A 3 137 9955 42.11 1042 1018 212.2
A 0 226 8866 36.98 1042 1018 212.2
B 3 64 1035434 5298.87 1009 984 195.2
B 0 230 54555 274.41 1009 984 195.2
B 0 190 35155 175.04 1009 984 195.2
C 14 238 155418 648.1 998 1003 238.3
C 7 247 137266 571.91 998 1003 238.3
C 13 61 6899 24.74 998 1003 238.3
D 10 70 1208909 4638.42 977 957 260.4
D 7 238 1079173 4140.25 977 957 260.4
D 8 195 566326 2170.96 977 957 260.4

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