ASTROSAT CZTI

Data Quality Report

Orbit 13668

Creation date: 2024-06-27T16:44:17.000050
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/AS1G08_070T01_9000002028_13668cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13668cztM0_level2_quad_clean.evt
Size (bytes)607,538,88087,171,840
Size579.4 MB 83.1 MB
Events in quadrant A3,899,451534,950
Events in quadrant B4,293,335572,874
Events in quadrant C4,165,057511,782
Events in quadrant D5,514,677479,302

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165404
B0175193
C0169263
D0215833

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77772733.510351%
B77773124.011830%
C77771982.545969%
D77773584.603317%

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 7823 7780 5 5 0.06% 0.06%
B 7823 7780 6 6 0.08% 0.08%
C 7823 7780 0 0 0.00% 0.00%
D 7823 7780 130 130 1.66% 1.67%

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 15 69 35248 167.69 999 975 204.4
A 1 162 18843 87.42 999 975 204.4
A 0 226 8916 38.85 999 975 204.4
B 0 219 168958 870.82 1003 981 192.9
B 0 214 87671 449.42 1003 981 192.9
B 3 209 38988 197.03 1003 981 192.9
C 3 233 377797 1672.47 961 966 225.3
C 14 220 37487 162.09 961 966 225.3
C 13 61 6935 26.49 961 966 225.3
D 5 222 702073 3030.61 952 927 231.4
D 1 52 489014 2109.69 952 927 231.4
D 8 195 340412 1467.38 952 927 231.4

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