ASTROSAT CZTI

Data Quality Report

Orbit 21242

Creation date: 2024-06-27T18:25:20.804542
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_037T01_9000003140_21242cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21242cztM0_level2_quad_clean.evt
Size (bytes)1,001,859,840151,346,880
Size955.4 MB 144.3 MB
Events in quadrant A6,475,038934,310
Events in quadrant B6,876,526949,743
Events in quadrant C6,291,825928,668
Events in quadrant D9,802,808855,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276354
B0287353
C0271823
D0380543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132431531.155327%
B132442121.600725%
C132441971.487466%
D132448496.410450%

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 14863 13245 20 20 0.13% 0.15%
B 14864 13246 28 28 0.19% 0.21%
C 14864 13246 2 2 0.01% 0.02%
D 14864 13246 587 587 3.95% 4.43%

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 5 16 130945 396.9 1606 1569 326.0
A 12 96 64911 194.32 1606 1569 326.0
A 15 236 46493 137.82 1606 1569 326.0
B 3 64 294915 955.58 1607 1568 307.0
B 0 189 67016 213.2 1607 1568 307.0
B 0 197 56248 178.12 1607 1568 307.0
C 14 238 238256 655.08 1544 1555 361.3
C 0 207 27002 70.43 1544 1555 361.3
C 13 61 10816 25.63 1544 1555 361.3
D 7 238 1967381 5379.68 1507 1465 365.4
D 1 239 1022184 2793.17 1507 1465 365.4
D 1 52 358329 976.55 1507 1465 365.4

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