ASTROSAT CZTI

Data Quality Report

Orbit 27490

Creation date: 2024-06-27T19:40:35.058987
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/AS1T03_249T01_9000003934_27490cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27490cztM0_level2_quad_clean.evt
Size (bytes)420,272,64078,431,040
Size400.8 MB 74.8 MB
Events in quadrant A2,891,509500,683
Events in quadrant B3,389,130506,986
Events in quadrant C2,950,016480,542
Events in quadrant D3,097,344475,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120770
B0135750
C0122750
D0129520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5883641.087880%
B58841101.869477%
C5884871.478586%
D5884681.155676%

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 6803 5883 0 0 0.00% 0.00%
B 6804 5884 27 27 0.40% 0.46%
C 6804 5884 3 3 0.04% 0.05%
D 6804 5885 25 25 0.37% 0.42%

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 6 16 11546 71.56 746 731 151.1
A 13 254 9733 59.56 746 731 151.1
A 3 137 6958 41.2 746 731 151.1
B 3 64 368830 2594.11 734 715 141.9
B 15 32 106320 744.2 734 715 141.9
B 0 230 24802 169.74 734 715 141.9
C 14 238 113161 669.23 710 713 168.0
C 10 22 41714 244.02 710 713 168.0
C 10 5 17252 98.43 710 713 168.0
D 1 52 265479 1536.91 721 700 172.3
D 2 250 36587 208.31 721 700 172.3
D 2 234 21637 121.53 721 700 172.3

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