ASTROSAT CZTI

Data Quality Report

Orbit 20240406_C07_001T10_9000006170_level2

Creation date: 2024-04-10T12:09:20.933489
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/AS1C07_001T10_9000006170cztM0_level2.fits modeM0/AS1C07_001T10_9000006170cztM0_level2_quad_clean.evt
Size (bytes)822,493,440984,758,400
Size784.4 MB 939.1 MB
Events in quadrant A5,042,0986,531,616
Events in quadrant B5,051,0126,849,584
Events in quadrant C5,245,1466,737,662
Events in quadrant D2,823,1922,984,683

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03172170
B02107250
C02076790
D05682790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019960
B019960
C019960
D019960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9803728152.871365%
B9803714841.513714%
C9803712181.242388%
D980365192052.960137%

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 112117 98040 0 0 0.00% 0.00%
B 112117 98036 0 0 0.00% 0.00%
C 112117 98031 0 0 0.00% 0.00%
D 112116 91359 0 0 0.00% 0.00%

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 7 110 4077 8.37 1316 1231 340.2
A 15 236 3953 8.0 1316 1231 340.2
A 0 29 3871 7.76 1316 1231 340.2
B 2 9 4804 13.65 1332 1270 259.0
B 2 8 3872 10.05 1332 1270 259.0
B 3 17 3667 9.26 1332 1270 259.0
C 3 202 4079 7.75 1387 1294 359.5
C 1 81 4067 7.71 1387 1294 359.5
C 3 203 4012 7.56 1387 1294 359.5
D 6 79 2109 6.08 810 737 225.8
D 15 47 2092 6.0 810 737 225.8
D 15 63 2059 5.86 810 737 225.8

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