ASTROSAT CZTI

Data Quality Report

Orbit 09087

Creation date: 2024-06-27T15:40:58.705435
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/AS1A03_120T01_9000001266_09087cztM0_level2.evt modeM0/AS1A03_120T01_9000001266_09087cztM0_level2_quad_clean.evt
Size (bytes)420,459,84083,105,280
Size401.0 MB 79.3 MB
Events in quadrant A3,351,376519,132
Events in quadrant B3,061,816539,320
Events in quadrant C2,847,523523,114
Events in quadrant D3,049,530500,882

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231
B0230
C0231
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014579678
B013636538
C013223500
D013948617

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01344
C01333
D01346

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6189570.920989%
B6218500.804117%
C6231210.337025%
D6195360.581114%

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 8770 6439 12 12 0.14% 0.19%
B 8770 6451 7 7 0.08% 0.11%
C 8770 6451 0 0 0.00% 0.00%
D 8770 6443 23 23 0.26% 0.36%

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 8 5 261168 1739.28 743 727 149.7
A 1 162 88833 588.39 743 727 149.7
A 4 2 42019 275.76 743 727 149.7
B 0 214 70766 490.57 755 738 142.7
B 0 219 19155 129.02 755 738 142.7
B 12 111 15508 103.47 755 738 142.7
C 13 61 5606 28.92 729 732 168.6
C 12 4 4793 24.09 729 732 168.6
C 8 222 2128 8.28 729 732 168.6
D 13 104 63192 329.64 712 696 189.6
D 8 195 59204 308.61 712 696 189.6
D 2 14 48661 253.0 712 696 189.6

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