ASTROSAT CZTI

Data Quality Report

Orbit 18440

Creation date: 2024-06-27T17:49:51.212996
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/AS1A05_199T01_9000002732_18440cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18440cztM0_level2_quad_clean.evt
Size (bytes)466,352,640104,515,200
Size444.7 MB 99.7 MB
Events in quadrant A3,357,011674,521
Events in quadrant B3,351,261707,071
Events in quadrant C3,353,801678,974
Events in quadrant D3,619,600651,072

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141942
B0140312
C0140702
D0149392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6500480.738462%
B6499921.415602%
C65001452.230769%
D65001011.553846%

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 9135 6501 3 3 0.03% 0.05%
B 9134 6500 1 1 0.01% 0.02%
C 9135 6502 0 0 0.00% 0.00%
D 9135 6502 26 26 0.28% 0.40%

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 14 238 90801 539.96 835 820 166.6
A 15 174 39885 234.42 835 820 166.6
A 4 2 18352 105.21 835 820 166.6
B 0 229 26940 163.71 850 830 159.5
B 12 111 18314 109.62 850 830 159.5
B 11 111 15845 94.14 850 830 159.5
C 14 238 129448 675.73 820 825 190.3
C 9 54 15856 78.97 820 825 190.3
C 3 233 9709 46.67 820 825 190.3
D 12 110 215466 1083.19 815 792 198.2
D 1 52 149446 750.07 815 792 198.2
D 13 168 140291 703.88 815 792 198.2

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