ASTROSAT CZTI

Data Quality Report

Orbit 06878

Creation date: 2024-06-27T15:12:41.452537
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/AS1A02_005T01_9000000948_06878cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06878cztM0_level2_quad_clean.evt
Size (bytes)467,150,40090,567,360
Size445.5 MB 86.4 MB
Events in quadrant A3,247,768565,759
Events in quadrant B3,374,829572,703
Events in quadrant C3,389,874567,939
Events in quadrant D3,659,224548,392

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145103
B0147732
C0146652
D0156332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7005500.713776%
B7005801.142041%
C70051011.441827%
D7005791.127766%

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 8690 7008 1 1 0.01% 0.01%
B 8690 7008 1 1 0.01% 0.01%
C 8690 7008 4 4 0.05% 0.06%
D 8690 7008 15 15 0.17% 0.21%

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 15 223 34311 197.85 827 809 169.3
A 13 251 14617 81.55 827 809 169.3
A 14 111 9194 49.52 827 809 169.3
B 0 214 57764 352.73 836 815 161.5
B 15 204 38145 231.22 836 815 161.5
B 4 80 16248 95.59 836 815 161.5
C 9 247 205821 1096.01 804 808 187.1
C 1 3 26891 139.44 804 808 187.1
C 12 4 12588 62.98 804 808 187.1
D 12 221 273711 1358.25 808 781 200.9
D 13 169 130189 644.01 808 781 200.9
D 8 195 87963 433.87 808 781 200.9

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