ASTROSAT CZTI

Data Quality Report

Orbit 35918

Creation date: 2022-06-09T01:33:55.387514
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/AS1A11_080T01_9000005146_35918cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35918cztM0_level2_quad_clean.evt
Size (bytes)505,408,32092,482,560
Size482.0 MB 88.2 MB
Events in quadrant A3,309,119617,021
Events in quadrant B4,783,321580,312
Events in quadrant C3,314,316611,680
Events in quadrant D3,505,298585,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133983
B0178532
C0131132
D0140572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58101161.996558%
B581059410.223752%
C58101192.048193%
D5810721.239243%

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 7153 5811 95 95 1.33% 1.63%
B 7153 5811 443 443 6.19% 7.62%
C 7153 5811 80 80 1.12% 1.38%
D 7153 5811 52 52 0.73% 0.89%

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 381035 2668.74 691 680 142.5
A 10 83 173602 1213.3 691 680 142.5
A 9 143 71070 493.89 691 680 142.5
B 5 172 2037315 15989.11 661 646 127.4
B 5 255 88487 689.61 661 646 127.4
B 15 85 18325 138.79 661 646 127.4
C 0 10 344476 2194.51 669 677 156.7
C 15 214 242608 1544.27 669 677 156.7
C 0 207 87854 556.46 669 677 156.7
D 2 250 290070 1732.58 673 656 167.0
D 8 195 196110 1170.09 673 656 167.0
D 13 249 121270 722.06 673 656 167.0

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