ASTROSAT CZTI

Data Quality Report

Orbit 29821

Creation date: 2024-06-27T20:08:03.470701
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_291T01_9000004278_29821cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29821cztM0_level2_quad_clean.evt
Size (bytes)552,208,320104,374,080
Size526.6 MB 99.5 MB
Events in quadrant A3,395,016696,211
Events in quadrant B5,469,689695,174
Events in quadrant C3,519,304655,184
Events in quadrant D3,879,570641,263

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143106
B0207843
C0145783
D0159014

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67871091.606011%
B67902113.107511%
C67901592.341679%
D6789941.384593%

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 8854 6793 4 4 0.05% 0.06%
B 8855 6794 1 1 0.01% 0.01%
C 8855 6794 11 11 0.12% 0.16%
D 8855 6794 19 19 0.21% 0.28%

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 12 96 51896 296.29 866 849 172.3
A 13 254 12538 67.85 866 849 172.3
A 3 137 8345 43.51 866 849 172.3
B 6 159 2005672 12455.35 858 838 161.0
B 0 190 75985 466.86 858 838 161.0
B 12 111 19275 114.54 858 838 161.0
C 14 238 136084 706.84 821 825 191.4
C 10 22 110480 573.04 821 825 191.4
C 3 233 58651 302.19 821 825 191.4
D 8 195 487328 2515.48 824 804 193.4
D 2 250 85577 438.3 824 804 193.4
D 7 223 75663 387.04 824 804 193.4

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