ASTROSAT CZTI

Data Quality Report

Orbit 21547

Creation date: 2024-06-27T18:29:07.407725
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_166T01_9000003192_21547cztM0_level2.evt modeM0/AS1A05_166T01_9000003192_21547cztM0_level2_quad_clean.evt
Size (bytes)376,588,80078,816,960
Size359.1 MB 75.2 MB
Events in quadrant A2,527,194520,912
Events in quadrant B2,718,568512,000
Events in quadrant C3,054,407492,697
Events in quadrant D2,740,488487,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135162515
B0142232790
C0167354439
D0148923153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0141
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013628
B013626
C013626
D013628

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5420180.332103%
B5353310.579115%
C51811112.142444%
D5347280.523658%

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 7639 6078 0 0 0.00% 0.00%
B 7639 6075 4 4 0.05% 0.07%
C 7638 5901 33 33 0.43% 0.56%
D 7638 6065 13 13 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 13 254 8634 60.02 655 641 133.2
A 0 226 5615 37.35 655 641 133.2
A 3 137 5490 36.41 655 641 133.2
B 0 230 81281 652.8 646 630 123.5
B 0 228 56473 452.0 646 630 123.5
B 4 190 17791 138.9 646 630 123.5
C 3 233 628060 4540.32 597 601 138.2
C 14 238 93783 674.27 597 601 138.2
C 13 61 4083 25.2 597 601 138.2
D 1 52 182753 1193.95 621 602 152.6
D 13 153 59174 383.92 621 602 152.6
D 13 104 48852 316.27 621 602 152.6

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