ASTROSAT CZTI

Data Quality Report

Orbit 45773

Creation date: 2024-06-27T23:16:00.925677
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/AS1T05_183T01_9000006124_45773cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45773cztM0_level2_quad_clean.evt
Size (bytes)1,147,567,680202,524,480
Size1.1 GB 193.1 MB
Events in quadrant A11,793,9421,356,216
Events in quadrant B14,335,2651,269,420
Events in quadrant C6,052,9131,386,838
Events in quadrant D9,279,4861,207,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440543
B0519933
C0275103
D0367424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131844363.307039%
B13185171312.992036%
C13185810.614334%
D131847765.885922%

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 14889 13187 87 87 0.58% 0.66%
B 14890 13188 959 959 6.44% 7.27%
C 14890 13188 5 5 0.03% 0.04%
D 14889 13187 549 549 3.69% 4.16%

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 5625852 18269.66 1476 1443 307.9
A 13 248 362586 1173.09 1476 1443 307.9
A 2 79 23999 73.27 1476 1443 307.9
B 3 112 6366109 22520.01 1438 1394 282.6
B 15 201 446590 1575.22 1438 1394 282.6
B 0 171 387857 1367.4 1438 1394 282.6
C 2 14 105604 300.79 1472 1486 346.2
C 1 3 95717 272.22 1472 1486 346.2
C 9 54 53043 148.94 1472 1486 346.2
D 2 249 1685702 4691.85 1434 1394 359.0
D 13 249 728486 2025.4 1434 1394 359.0
D 1 52 706169 1963.24 1434 1394 359.0

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