ASTROSAT CZTI

Data Quality Report

Orbit 22931

Creation date: 2024-06-27T18:47:42.372816
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/AS1T03_170T01_9000003388_22931cztM0_level2.evt modeM0/AS1T03_170T01_9000003388_22931cztM0_level2_quad_clean.evt
Size (bytes)561,648,96098,760,960
Size535.6 MB 94.2 MB
Events in quadrant A3,684,884627,223
Events in quadrant B3,815,358633,811
Events in quadrant C3,746,658612,813
Events in quadrant D5,245,804587,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157842
B0159792
C0158802
D0207522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76162052.691702%
B76172443.203361%
C76172733.584088%
D76173985.225154%

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 9141 7618 0 0 0.00% 0.00%
B 9142 7619 1 1 0.01% 0.01%
C 9142 7619 0 0 0.00% 0.00%
D 9142 7619 157 157 1.72% 2.06%

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 12497 59.9 955 932 193.1
A 3 137 8385 38.6 955 932 193.1
A 0 226 8187 37.57 955 932 193.1
B 0 190 34852 185.22 951 927 183.2
B 12 111 22084 115.51 951 927 183.2
B 11 111 19612 102.01 951 927 183.2
C 14 238 142684 664.8 921 926 213.2
C 7 247 10934 46.93 921 926 213.2
C 13 61 6421 25.77 921 926 213.2
D 7 238 847166 3754.02 926 898 225.4
D 1 52 531074 2351.84 926 898 225.4
D 1 239 151310 667.22 926 898 225.4

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