ASTROSAT CZTI

Data Quality Report

Orbit 43442

Creation date: 2024-06-27T22:52:01.471051
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/AS1A12_018T01_9000005874_43442cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43442cztM0_level2_quad_clean.evt
Size (bytes)511,741,44078,183,360
Size488.0 MB 74.6 MB
Events in quadrant A8,590,123287,087
Events in quadrant B2,685,670611,597
Events in quadrant C2,519,948582,669
Events in quadrant D4,726,985508,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292751
B0116311
C0109851
D0177891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5395294254.531974%
B5395250.463392%
C539550.092678%
D53964207.783543%

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 7127 5394 1848 1848 25.93% 34.26%
B 7128 5396 20 20 0.28% 0.37%
C 7128 5396 2 2 0.03% 0.04%
D 7129 5397 396 396 5.55% 7.34%

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 15 222 6836046 105627.92 312 305 64.7
A 10 83 335208 5175.02 312 305 64.7
A 15 237 186471 2876.69 312 305 64.7
B 0 189 145675 1295.12 580 564 112.0
B 0 199 84641 750.39 580 564 112.0
B 0 190 70788 626.75 580 564 112.0
C 15 214 223479 1684.25 571 576 132.3
C 3 233 50496 377.19 571 576 132.3
C 15 159 10849 77.62 571 576 132.3
D 1 52 1202551 8994.32 553 536 133.6
D 2 16 258369 1929.29 553 536 133.6
D 2 249 222805 1663.17 553 536 133.6

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