ASTROSAT CZTI

Data Quality Report

Orbit 11506

Creation date: 2024-06-27T16:13:56.119489
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/AS1A04_021T05_9000001686_11506cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11506cztM0_level2_quad_clean.evt
Size (bytes)601,588,80095,074,560
Size573.7 MB 90.7 MB
Events in quadrant A5,392,865597,863
Events in quadrant B4,437,535612,935
Events in quadrant C3,173,894641,400
Events in quadrant D4,788,536587,002

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203982
B0172701
C0132981
D0184531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63095218.258044%
B63093525.579331%
C6309751.188778%
D63093315.246473%

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 7580 6311 268 268 3.54% 4.25%
B 7580 6311 137 137 1.81% 2.17%
C 7580 6311 1 1 0.01% 0.02%
D 7580 6311 199 199 2.63% 3.15%

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 1961536 11981.16 819 806 163.7
A 15 223 117447 712.74 819 806 163.7
A 15 239 51593 310.34 819 806 163.7
B 4 239 921143 6030.41 817 799 152.6
B 11 51 112141 729.55 817 799 152.6
B 15 204 105842 688.28 817 799 152.6
C 12 4 17953 92.75 808 816 184.8
C 14 234 7364 35.44 808 816 184.8
C 13 61 5854 27.27 808 816 184.8
D 1 52 854984 4590.31 797 778 186.1
D 2 120 227574 1218.75 797 778 186.1
D 8 195 226022 1210.41 797 778 186.1

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