ASTROSAT CZTI

Data Quality Report

Orbit 43759

Creation date: 2024-06-27T22:55:26.291664
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/AS1A13_026T01_9000005904_43759cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43759cztM0_level2_quad_clean.evt
Size (bytes)540,780,480105,514,560
Size515.7 MB 100.6 MB
Events in quadrant A5,572,646700,176
Events in quadrant B3,922,733744,854
Events in quadrant C4,195,882707,895
Events in quadrant D5,807,487575,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215972
B0160072
C0170282
D0217913

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66904326.457399%
B66902063.079223%
C66902774.140508%
D668998214.680819%

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 7615 6691 240 240 3.15% 3.59%
B 7615 6691 82 82 1.08% 1.23%
C 7615 6691 201 201 2.64% 3.00%
D 7613 6688 443 443 5.82% 6.62%

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 10 83 1007039 6372.04 758 741 157.9
A 14 63 732425 4633.14 758 741 157.9
A 15 174 352835 2229.51 758 741 157.9
B 0 200 548277 3610.0 771 749 151.7
B 5 235 122537 802.98 771 749 151.7
B 4 80 83095 542.93 771 749 151.7
C 15 158 871582 4906.11 750 752 177.5
C 14 254 212857 1194.96 750 752 177.5
C 15 157 75600 421.68 750 752 177.5
D 4 212 1127640 6164.31 704 681 182.8
D 13 249 506864 2768.75 704 681 182.8
D 5 235 217357 1185.19 704 681 182.8

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