ASTROSAT CZTI

Data Quality Report

Orbit 11520

Creation date: 2024-06-27T16:14:08.572985
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/AS1A04_021T06_9000001688_11520cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11520cztM0_level2_quad_clean.evt
Size (bytes)571,878,72088,911,360
Size545.4 MB 84.8 MB
Events in quadrant A5,236,889543,399
Events in quadrant B4,407,697563,633
Events in quadrant C3,168,965587,948
Events in quadrant D4,073,032551,530

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198843
B0173052
C0133422
D0161512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638865010.175329%
B63882914.555416%
C6388731.142768%
D63881502.348153%

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 7614 6390 350 350 4.60% 5.48%
B 7614 6390 108 108 1.42% 1.69%
C 7614 6390 0 0 0.00% 0.00%
D 7614 6390 73 73 0.96% 1.14%

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 8 5 2007889 12442.68 807 793 161.3
A 1 162 36593 221.94 807 793 161.3
A 9 143 23056 138.02 807 793 161.3
B 4 239 605081 3882.56 826 807 155.6
B 3 64 235827 1510.04 826 807 155.6
B 11 51 173022 1106.51 826 807 155.6
C 7 87 21585 111.43 807 814 186.4
C 13 61 5820 26.86 807 814 186.4
C 12 4 3488 14.34 807 814 186.4
D 1 52 596428 3100.1 808 789 192.1
D 2 120 88651 457.29 808 789 192.1
D 2 14 86175 444.41 808 789 192.1

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