ASTROSAT CZTI

Data Quality Report

Orbit 20220330_C07_004T01_9000005042_level2

Creation date: 2022-04-11T21:52:24.947474
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_004T01_9000005042cztM0_level2_bc.evt modeM0/AS1C07_004T01_9000005042cztM0_level2_quad_clean.evt
Size (bytes)1,334,445,120225,708,480
Size1.2 GB 215.3 MB
Events in quadrant A4,841,7261,469,243
Events in quadrant B12,267,2731,319,648
Events in quadrant C5,490,9191,461,620
Events in quadrant D16,471,5491,227,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421960
B0787930
C0432630
D0857240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19683970.492811%
B19683427921.739572%
C196832281.158360%
D19683340117.278870%

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 26075 19686 4 4 0.02% 0.02%
B 26075 19679 289 289 1.11% 1.47%
C 26075 19682 53 53 0.20% 0.27%
D 26075 19681 546 546 2.09% 2.77%

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 15 169 346508 1513.45 1030 1016 228.3
A 10 83 265615 1159.1 1030 1016 228.3
A 9 143 149746 651.52 1030 1016 228.3
B 5 236 6107443 32336.15 940 920 188.8
B 5 172 1154833 6110.37 940 920 188.8
B 0 182 712054 3765.7 940 920 188.8
C 15 214 768855 3367.76 1000 991 228.0
C 0 10 469103 2053.08 1000 991 228.0
C 0 207 242305 1058.37 1000 991 228.0
D 8 195 5074530 22632.88 936 907 224.2
D 5 223 3508226 15645.77 936 907 224.2
D 7 80 1911505 8522.97 936 907 224.2

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