ASTROSAT CZTI

Data Quality Report

Orbit 17895

Creation date: 2024-06-27T17:42:18.637758
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_075T01_9000002660_17895cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17895cztM0_level2_quad_clean.evt
Size (bytes)506,427,840106,044,480
Size483.0 MB 101.1 MB
Events in quadrant A3,574,396669,847
Events in quadrant B3,743,534689,635
Events in quadrant C3,685,501664,499
Events in quadrant D3,808,668649,886

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160032
B0163283
C0161372
D0167142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77272072.678918%
B77272282.950692%
C77272062.665976%
D77271602.070661%

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 7767 7729 0 0 0.00% 0.00%
B 7767 7729 0 0 0.00% 0.00%
C 7767 7729 0 0 0.00% 0.00%
D 7767 7729 21 21 0.27% 0.27%

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 15 174 23171 118.32 924 902 188.2
A 0 226 8024 37.84 924 902 188.2
A 3 137 7440 34.74 924 902 188.2
B 0 183 56243 307.62 924 898 179.9
B 12 111 22236 118.6 924 898 179.9
B 15 222 21195 112.82 924 898 179.9
C 14 238 134150 631.73 888 892 210.9
C 3 233 83647 392.31 888 892 210.9
C 13 61 6218 25.25 888 892 210.9
D 12 110 163080 729.16 903 876 222.5
D 9 64 60229 266.81 903 876 222.5
D 7 96 57421 254.19 903 876 222.5

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