ASTROSAT CZTI

Data Quality Report

Orbit 19756

Creation date: 2024-06-27T18:06:36.419959
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_022T08_9000002950_19756cztM0_level2.evt modeM0/AS1A05_022T08_9000002950_19756cztM0_level2_quad_clean.evt
Size (bytes)387,619,20057,268,800
Size369.7 MB 54.6 MB
Events in quadrant A2,338,081359,387
Events in quadrant B2,485,232369,408
Events in quadrant C3,459,307344,942
Events in quadrant D3,135,526328,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099811
B0103831
C0136811
D0125891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4717470.996396%
B4716791.675148%
C47161062.247668%
D47161593.371501%

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 5972 4718 0 0 0.00% 0.00%
B 5971 4717 7 7 0.12% 0.15%
C 5971 4717 14 14 0.23% 0.30%
D 5971 4717 106 106 1.78% 2.25%

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 0 226 5405 39.13 605 594 123.0
A 9 143 5318 38.42 605 594 123.0
A 3 137 4704 33.43 605 594 123.0
B 0 198 59048 500.23 609 594 116.9
B 7 220 31066 260.77 609 594 116.9
B 12 111 13714 112.28 609 594 116.9
C 3 233 1104657 8144.16 580 584 135.6
C 14 238 89800 658.1 580 584 135.6
C 13 61 4115 26.05 580 584 135.6
D 1 52 377119 2689.12 577 563 140.0
D 7 238 250962 1788.19 577 563 140.0
D 12 218 196075 1396.22 577 563 140.0

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