ASTROSAT CZTI

Data Quality Report

Orbit 34694

Creation date: 2022-02-27T08:11:26.125511
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/AS1A07_093T29_9000004968_34694cztM0_level2.evt modeM0/AS1A07_093T29_9000004968_34694cztM0_level2_quad_clean.evt
Size (bytes)466,591,68068,149,440
Size445.0 MB 65.0 MB
Events in quadrant A2,684,965436,086
Events in quadrant B4,528,632405,747
Events in quadrant C2,740,724440,107
Events in quadrant D3,822,568416,054

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114982
B0168732
C0113082
D0149382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5215220.421860%
B521568113.058485%
C5215671.284756%
D5215941.802493%

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 6827 5216 6 6 0.09% 0.12%
B 6827 5216 453 453 6.64% 8.68%
C 6827 5216 51 51 0.75% 0.98%
D 6827 5216 47 47 0.69% 0.90%

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 299207 2479.65 596 584 120.4
A 10 83 45643 374.15 596 584 120.4
A 13 6 10517 82.48 596 584 120.4
B 5 172 2003507 18434.48 561 548 108.7
B 5 255 253626 2329.23 561 548 108.7
B 4 171 15529 137.88 561 548 108.7
C 15 214 221397 1619.79 581 583 136.3
C 0 10 185494 1356.42 581 583 136.3
C 14 67 51626 374.43 581 583 136.3
D 8 195 1215289 8613.74 575 558 141.0
D 2 250 118847 838.8 575 558 141.0
D 2 249 71351 502.0 575 558 141.0

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