ASTROSAT CZTI

Data Quality Report

Orbit 48283

Creation date: 2024-09-06T13:01:03.105435
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/AS1A13_029T01_9000006422_48283cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48283cztM0_level2_quad_clean.evt
Size (bytes)952,326,720204,719,040
Size908.2 MB 195.2 MB
Events in quadrant A13,179,4971,337,956
Events in quadrant B6,665,2711,419,323
Events in quadrant C5,726,6201,370,331
Events in quadrant D8,673,9241,170,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0536354816
B0311702623
C0289392274
D0411116108

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028816
B028718
C028923
D028520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223
B0223
C0202
D0224

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129503692.849421%
B130871641.253152%
C13115470.358368%
D129047535.835400%

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 23636 13245 16 16 0.07% 0.12%
B 23636 13331 30 30 0.13% 0.23%
C 23636 13351 2 2 0.01% 0.01%
D 23636 13170 500 500 2.12% 3.80%

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 7487893 24779.73 1448 1418 302.1
A 7 3 75330 244.64 1448 1418 302.1
A 13 254 25199 78.71 1448 1418 302.1
B 4 21 444077 1529.92 1460 1415 289.3
B 5 255 200053 686.53 1460 1415 289.3
B 0 200 85337 290.05 1460 1415 289.3
C 14 254 48339 137.04 1446 1454 342.1
C 12 2 16688 44.53 1446 1454 342.1
C 1 16 11849 30.38 1446 1454 342.1
D 2 249 1478552 4206.48 1399 1355 351.2
D 2 165 1195500 3400.46 1399 1355 351.2
D 7 67 132262 372.77 1399 1355 351.2

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