ASTROSAT CZTI

Data Quality Report

Orbit 49682

Creation date: 2024-12-09T19:36:43.583812
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_233T01_9000006438_49682cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49682cztM0_level2_quad_clean.evt
Size (bytes)1,275,621,12038,324,160
Size1.2 GB 36.5 MB
Events in quadrant A16,484,68220,326
Events in quadrant B4,540,091670,652
Events in quadrant C9,129,943694
Events in quadrant D16,554,3449,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0534401
B0179811
C0317312
D0536681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6594646297.998180%
B65953395.140258%
C6594659099.939339%
D6594651998.862602%

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 7478 6593 5941 5941 79.45% 90.11%
B 7480 6596 187 187 2.50% 2.84%
C 7478 6593 712 712 9.52% 10.80%
D 7478 6593 6165 6165 82.44% 93.51%

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 5534860 44735.16 386 370 123.7
A 3 130 1759047 14215.35 386 370 123.7
A 4 60 1701819 13752.78 386 370 123.7
B 5 173 300898 1976.1 707 686 151.9
B 3 232 283747 1863.21 707 686 151.9
B 10 45 279929 1838.08 707 686 151.9
C 15 180 2426691 95153.06 53 50 25.5
C 15 190 1291501 50640.17 53 50 25.5
C 15 181 1065198 41766.41 53 50 25.5
D 15 40 3292497 39863.52 195 184 82.6
D 7 45 2208636 26740.06 195 184 82.6
D 7 60 1541465 18661.92 195 184 82.6

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