ASTROSAT CZTI

Data Quality Report

Orbit 35190

Creation date: 2024-06-27T21:10:22.679870
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/AS1T05_020T01_9000005050_35190cztM0_level2.evt modeM0/AS1T05_020T01_9000005050_35190cztM0_level2_quad_clean.evt
Size (bytes)698,567,04049,040,640
Size666.2 MB 46.8 MB
Events in quadrant A2,812,413297,108
Events in quadrant B6,773,392282,311
Events in quadrant C3,427,263286,721
Events in quadrant D7,794,222254,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113383
B0237642
C0134402
D0268202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518480.154321%
B5184146028.163580%
C51841262.430556%
D518484516.300154%

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 7307 5185 1 1 0.01% 0.02%
B 7307 5185 896 896 12.26% 17.28%
C 7307 5185 84 84 1.15% 1.62%
D 7307 5185 1138 1138 15.57% 21.95%

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 10 83 101916 736.34 694 684 137.5
A 13 6 13490 93.15 694 684 137.5
A 9 143 10418 70.8 694 684 137.5
B 5 236 4037580 34699.43 620 606 116.3
B 5 172 152902 1309.05 620 606 116.3
B 5 200 55752 474.0 620 606 116.3
C 0 10 464370 3117.98 655 662 148.7
C 15 214 217254 1456.37 655 662 148.7
C 1 23 145753 975.59 655 662 148.7
D 8 195 4589896 29298.52 647 630 156.6
D 5 223 208758 1328.72 647 630 156.6
D 12 233 103435 656.32 647 630 156.6

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