ASTROSAT CZTI

Data Quality Report

Orbit 26691

Creation date: 2024-06-27T19:31:50.155472
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/AS1A09_145T01_9000003848_26691cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26691cztM0_level2_quad_clean.evt
Size (bytes)483,969,60088,303,680
Size461.5 MB 84.2 MB
Events in quadrant A3,179,095591,696
Events in quadrant B3,025,743596,370
Events in quadrant C3,215,128562,120
Events in quadrant D4,863,523538,365

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125930
B0120880
C0130790
D0181090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5511871.578661%
B5512651.179245%
C5512951.723512%
D55113496.332789%

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 6811 5512 12 12 0.18% 0.22%
B 6812 5513 0 0 0.00% 0.00%
C 6812 5513 3 3 0.04% 0.05%
D 6811 5512 255 255 3.74% 4.63%

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 13 194094 1245.27 775 763 155.3
A 13 254 8934 52.63 775 763 155.3
A 0 226 6696 38.22 775 763 155.3
B 10 251 17912 120.99 757 742 141.9
B 12 111 16133 108.45 757 742 141.9
B 11 111 14155 94.51 757 742 141.9
C 3 233 151642 890.4 725 732 169.5
C 14 238 118736 696.25 725 732 169.5
C 5 37 96520 565.17 725 732 169.5
D 1 52 1809806 9623.12 730 714 188.0
D 2 250 149049 789.04 730 714 188.0
D 7 80 96707 510.62 730 714 188.0

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