ASTROSAT CZTI

Data Quality Report

Orbit 08731

Creation date: 2024-06-27T15:36:27.721281
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/AS1G07_005T02_9000001214_08731cztM0_level2.evt modeM0/AS1G07_005T02_9000001214_08731cztM0_level2_quad_clean.evt
Size (bytes)479,603,520120,412,800
Size457.4 MB 114.8 MB
Events in quadrant A3,399,582782,324
Events in quadrant B3,554,080793,655
Events in quadrant C3,383,436790,324
Events in quadrant D3,678,514759,421

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154934
B0158583
C0155333
D0164933

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7492340.453817%
B7492680.907635%
C7492440.587293%
D7492941.254672%

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 8827 7495 0 0 0.00% 0.00%
B 8827 7495 5 5 0.06% 0.07%
C 8827 7495 1 1 0.01% 0.01%
D 8827 7495 64 64 0.73% 0.85%

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 13 251 102669 589.52 851 829 172.8
A 15 236 8632 45.17 851 829 172.8
A 0 226 7877 40.8 851 829 172.8
B 5 255 78624 477.15 864 842 163.0
B 4 48 47095 283.73 864 842 163.0
B 0 214 25035 148.41 864 842 163.0
C 1 3 29638 148.42 841 844 194.0
C 1 16 26468 132.08 841 844 194.0
C 14 234 22582 112.05 841 844 194.0
D 1 52 177090 810.74 824 803 217.4
D 7 71 173230 792.99 824 803 217.4
D 2 152 53958 244.46 824 803 217.4

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