ASTROSAT CZTI

Data Quality Report

Orbit 36643

Creation date: 2024-06-27T21:29:38.816672
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/AS1A11_049T04_9000005230_36643cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36643cztM0_level2_quad_clean.evt
Size (bytes)451,779,84074,427,840
Size430.9 MB 71.0 MB
Events in quadrant A2,967,529475,500
Events in quadrant B3,491,352463,422
Events in quadrant C3,357,747453,744
Events in quadrant D3,461,243445,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125543
B0141292
C0137012
D0141602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5953200.335965%
B59531742.922896%
C59531322.217369%
D59531452.435747%

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 7237 5954 2 2 0.03% 0.03%
B 7237 5954 114 114 1.58% 1.91%
C 7237 5954 101 101 1.40% 1.70%
D 7237 5954 108 108 1.49% 1.81%

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 232768 1641.08 694 681 141.4
A 13 6 13942 93.77 694 681 141.4
A 7 192 11236 74.63 694 681 141.4
B 0 190 308008 2315.44 680 662 132.7
B 5 255 291856 2193.75 680 662 132.7
B 4 81 49018 364.3 680 662 132.7
C 0 10 388316 2519.67 659 664 153.9
C 15 214 250304 1622.62 659 664 153.9
C 14 254 98790 637.8 659 664 153.9
D 2 153 254481 1556.89 665 646 163.0
D 2 250 239316 1463.88 665 646 163.0
D 12 235 107698 656.6 665 646 163.0

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