ASTROSAT CZTI

Data Quality Report

Orbit 27505

Creation date: 2024-06-27T19:40:45.451893
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_27505cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27505cztM0_level2_quad_clean.evt
Size (bytes)449,902,08084,309,120
Size429.1 MB 80.4 MB
Events in quadrant A3,067,339538,753
Events in quadrant B3,111,737547,816
Events in quadrant C3,195,046519,081
Events in quadrant D3,822,315506,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129550
B0130780
C0133100
D0154250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63061452.299397%
B63061472.331113%
C63071752.774695%
D63072153.408911%

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 6931 6306 0 0 0.00% 0.00%
B 6931 6306 0 0 0.00% 0.00%
C 6932 6307 24 24 0.35% 0.38%
D 6932 6307 63 63 0.91% 1.00%

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 13 254 9200 52.44 794 776 160.6
A 3 137 7508 41.91 794 776 160.6
A 0 226 6648 36.55 794 776 160.6
B 15 32 21489 136.16 783 761 152.2
B 12 111 18759 118.23 783 761 152.2
B 11 111 16726 104.88 783 761 152.2
C 10 22 132592 740.75 755 758 178.0
C 14 238 120230 671.29 755 758 178.0
C 13 61 5071 24.23 755 758 178.0
D 1 52 712881 3866.53 764 742 184.2
D 2 250 166726 901.2 764 742 184.2
D 14 35 30937 163.94 764 742 184.2

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