ASTROSAT CZTI

Data Quality Report

Orbit 34674

Creation date: 2022-02-26T00:42:24.220917
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/AS1A11_065T13_9000004960_34674cztM0_level2.evt modeM0/AS1A11_065T13_9000004960_34674cztM0_level2_quad_clean.evt
Size (bytes)592,488,00076,233,600
Size565.0 MB 72.7 MB
Events in quadrant A3,304,627497,157
Events in quadrant B4,151,508497,561
Events in quadrant C3,087,793483,560
Events in quadrant D6,997,867415,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136533
B0162672
C0126482
D0249702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59321642.764666%
B59323606.068780%
C5932641.078894%
D593286114.514498%

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 7244 5933 101 101 1.39% 1.70%
B 7244 5933 186 186 2.57% 3.14%
C 7244 5933 40 40 0.55% 0.67%
D 7244 5933 745 745 10.28% 12.56%

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 15 169 541050 3943.41 679 667 137.0
A 10 83 52025 374.78 679 667 137.0
A 7 48 39538 283.66 679 667 137.0
B 5 172 948663 7481.02 666 648 126.7
B 5 255 387172 3050.16 666 648 126.7
B 0 190 97939 767.75 666 648 126.7
C 15 214 256223 1660.2 661 664 153.9
C 0 10 164649 1065.3 661 664 153.9
C 14 67 65635 422.07 661 664 153.9
D 8 195 2205110 13402.08 625 609 164.5
D 7 38 1400406 8509.95 625 609 164.5
D 2 249 265459 1610.13 625 609 164.5

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