ASTROSAT CZTI

Data Quality Report

Orbit 11669

Creation date: 2024-06-27T16:16:51.364338
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/AS1T01_207T01_9000001720_11669cztM0_level2.evt modeM0/AS1T01_207T01_9000001720_11669cztM0_level2_quad_clean.evt
Size (bytes)581,034,24084,389,760
Size554.1 MB 80.5 MB
Events in quadrant A4,979,527510,986
Events in quadrant B4,350,401518,128
Events in quadrant C3,365,151519,691
Events in quadrant D4,410,434502,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197064
B0174793
C0150213
D0179803

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72463755.175269%
B72463294.540436%
C72461291.780293%
D72462273.132763%

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 8702 7250 79 79 0.91% 1.09%
B 8702 7250 93 93 1.07% 1.28%
C 8702 7250 0 0 0.00% 0.00%
D 8702 7250 55 55 0.63% 0.76%

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 8 5 970702 5504.22 868 849 176.2
A 1 162 244066 1380.33 868 849 176.2
A 1 178 143174 807.74 868 849 176.2
B 4 239 648336 3876.23 870 844 167.0
B 15 204 92982 551.59 870 844 167.0
B 0 214 74630 441.72 870 844 167.0
C 13 61 6425 27.77 863 866 200.2
C 14 234 2191 6.62 863 866 200.2
C 3 202 2149 6.41 863 866 200.2
D 13 104 493494 2418.57 855 829 203.7
D 8 195 351517 1721.59 855 829 203.7
D 1 52 204188 998.32 855 829 203.7

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