ASTROSAT CZTI

Data Quality Report

Orbit 34420

Creation date: 2022-02-08T18:48:23.051968
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_108T02_9000004914_34420cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34420cztM0_level2_quad_clean.evt
Size (bytes)482,466,24051,943,680
Size460.1 MB 49.5 MB
Events in quadrant A2,851,597302,849
Events in quadrant B3,802,638298,447
Events in quadrant C3,192,190299,727
Events in quadrant D4,387,683281,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118943
B0148762
C0128542
D0171332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5566120.215595%
B55662294.114265%
C5566330.592885%
D55661001.796622%

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 7449 5567 2 2 0.03% 0.04%
B 7449 5567 141 141 1.89% 2.53%
C 7449 5567 21 21 0.28% 0.38%
D 7449 5567 89 89 1.19% 1.60%

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 36001 248.76 720 708 141.9
A 9 143 16968 114.61 720 708 141.9
A 13 6 15219 102.28 720 708 141.9
B 5 172 814794 6235.87 699 681 130.6
B 0 190 73695 559.27 699 681 130.6
B 0 229 73286 556.13 699 681 130.6
C 15 214 235406 1490.13 693 699 157.5
C 14 67 134834 851.61 693 699 157.5
C 0 10 99304 626.03 693 699 157.5
D 8 195 876632 5133.77 692 673 170.6
D 2 207 163120 952.06 692 673 170.6
D 14 52 121087 705.71 692 673 170.6

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