ASTROSAT CZTI

Data Quality Report

Orbit 20726

Creation date: 2024-06-27T18:18:48.390741
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/AS1A05_165T07_9000003062_20726cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20726cztM0_level2_quad_clean.evt
Size (bytes)445,078,080111,525,120
Size424.5 MB 106.4 MB
Events in quadrant A3,082,538768,676
Events in quadrant B3,143,437759,650
Events in quadrant C3,121,215726,957
Events in quadrant D3,741,138720,211

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01193
B01204
C01206
D01204

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013614766
B013719754
C013741762
D015973856

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5763741.284053%
B5760881.527778%
C57651121.942758%
D57591442.500434%

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 7377 5786 0 0 0.00% 0.00%
B 7377 5781 5 5 0.07% 0.09%
C 7377 5789 0 0 0.00% 0.00%
D 7377 5780 75 75 1.02% 1.30%

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 0 226 7171 40.16 801 788 158.9
A 3 137 5905 32.2 801 788 158.9
A 12 194 5746 31.2 801 788 158.9
B 3 64 26395 177.88 776 761 144.1
B 0 190 25607 172.41 776 761 144.1
B 12 111 16440 108.8 776 761 144.1
C 14 238 119282 686.94 751 758 172.5
C 8 208 47654 271.8 751 758 172.5
C 3 233 22285 124.77 751 758 172.5
D 5 222 371176 2011.15 773 754 184.2
D 1 20 143398 774.47 773 754 184.2
D 1 52 139186 751.6 773 754 184.2

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