ASTROSAT CZTI

Data Quality Report

Orbit 35360

Creation date: 2022-04-13T10:41:25.347500
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_099T01_9000005068_35360cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35360cztM0_level2_quad_clean.evt
Size (bytes)655,848,00057,447,360
Size625.5 MB 54.8 MB
Events in quadrant A4,677,420354,514
Events in quadrant B8,124,295290,718
Events in quadrant C3,180,975360,200
Events in quadrant D3,507,751348,153

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175023
B0279382
C0125772
D0140672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5491100018.211619%
B5491200836.568931%
C54911422.586050%
D5491881.602622%

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 8837 5493 480 480 5.43% 8.74%
B 8837 5493 1692 1692 19.15% 30.80%
C 8837 5493 127 127 1.44% 2.31%
D 8837 5493 55 55 0.62% 1.00%

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 2255217 18827.69 593 582 119.8
A 10 83 100244 832.24 593 582 119.8
A 13 6 14208 113.79 593 582 119.8
B 4 251 5306925 49682.62 553 539 106.8
B 5 172 276092 2579.95 553 539 106.8
B 5 236 81663 759.55 553 539 106.8
C 0 10 453810 3065.41 630 636 147.8
C 15 214 227212 1532.63 630 636 147.8
C 3 233 33883 224.89 630 636 147.8
D 8 195 584427 3724.77 632 614 156.7
D 2 152 104004 659.64 632 614 156.7
D 2 250 58736 370.82 632 614 156.7

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