ASTROSAT CZTI

Data Quality Report

Orbit 29157

Creation date: 2024-06-27T20:00:55.778234
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/AS1A10_099T01_9000004184_29157cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29157cztM0_level2_quad_clean.evt
Size (bytes)612,984,960112,294,080
Size584.6 MB 107.1 MB
Events in quadrant A4,057,577719,552
Events in quadrant B4,202,064733,174
Events in quadrant C4,128,691701,093
Events in quadrant D5,614,432671,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174632
B0177632
C0175232
D0223242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8288871.049710%
B82881972.376931%
C82881702.051158%
D82892402.895404%

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 8908 8291 0 0 0.00% 0.00%
B 8908 8291 2 2 0.02% 0.02%
C 8908 8291 0 0 0.00% 0.00%
D 8909 8292 111 111 1.25% 1.34%

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 14794 64.69 1050 1028 212.8
A 3 137 10806 45.95 1050 1028 212.8
A 0 226 8841 36.71 1050 1028 212.8
B 0 183 55499 269.47 1044 1018 202.2
B 12 111 25800 122.57 1044 1018 202.2
B 11 111 23483 111.11 1044 1018 202.2
C 14 238 168913 703.4 1006 1012 238.7
C 2 114 20140 80.13 1006 1012 238.7
C 14 254 14677 57.25 1006 1012 238.7
D 1 52 1078308 4498.16 1002 975 239.5
D 8 195 667211 2781.72 1002 975 239.5
D 2 234 36514 148.39 1002 975 239.5

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