ASTROSAT CZTI

Data Quality Report

Orbit 27297

Creation date: 2024-06-27T19:38:33.550063
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_243T01_9000003918_27297cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27297cztM0_level2_quad_clean.evt
Size (bytes)526,383,36086,460,480
Size502.0 MB 82.5 MB
Events in quadrant A3,341,177566,217
Events in quadrant B3,386,029576,834
Events in quadrant C3,333,306541,770
Events in quadrant D5,451,795491,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139200
B0140730
C0139550
D0205580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6330580.916272%
B6330651.026856%
C63311031.626915%
D63316109.635129%

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 7505 6330 0 0 0.00% 0.00%
B 7505 6331 3 3 0.04% 0.05%
C 7506 6332 1 1 0.01% 0.02%
D 7506 6332 553 553 7.37% 8.73%

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 9487 50.04 867 852 172.6
A 3 137 7568 38.92 867 852 172.6
A 0 226 7440 38.18 867 852 172.6
B 12 111 19384 115.87 857 837 160.1
B 11 111 17361 103.23 857 837 160.1
B 14 111 16196 95.95 857 837 160.1
C 14 238 132614 698.21 816 826 188.8
C 15 208 22044 112.41 816 826 188.8
C 13 61 5515 24.84 816 826 188.8
D 1 52 2324797 12434.97 794 780 186.9
D 12 233 46898 246.76 794 780 186.9
D 2 250 26275 136.41 794 780 186.9

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