ASTROSAT CZTI

Data Quality Report

Orbit 37389

Creation date: 2024-06-27T21:39:20.818178
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/AS1C07_001T01_9000005320_37389cztM0_level2.evt modeM0/AS1C07_001T01_9000005320_37389cztM0_level2_quad_clean.evt
Size (bytes)950,431,680182,986,560
Size906.4 MB 174.5 MB
Events in quadrant A4,934,9341,256,981
Events in quadrant B5,130,9581,286,748
Events in quadrant C5,040,7511,267,293
Events in quadrant D13,021,9281,057,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209184
B0216043
C0210033
D0455123

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9714370.380894%
B9714660.679432%
C9714850.875026%
D9714225223.183035%

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 13572 9716 30 30 0.22% 0.31%
B 13572 9716 29 29 0.21% 0.30%
C 13572 9716 53 53 0.39% 0.55%
D 13572 9716 1868 1868 13.76% 19.23%

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 10 83 469235 2132.48 1099 1080 219.5
A 13 248 56923 254.37 1099 1080 219.5
A 15 174 52020 232.04 1099 1080 219.5
B 5 172 168450 808.11 1104 1077 207.1
B 5 200 92896 443.32 1104 1077 207.1
B 0 190 81060 386.17 1104 1077 207.1
C 15 214 410550 1657.62 1074 1080 247.0
C 14 254 229807 925.93 1074 1080 247.0
C 0 10 119117 477.84 1074 1080 247.0
D 12 235 5434935 23452.5 962 936 231.7
D 1 47 1561566 6735.49 962 936 231.7
D 12 227 765187 3298.42 962 936 231.7

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