ASTROSAT CZTI

Data Quality Report

Orbit 21481

Creation date: 2024-06-27T18:28:25.463645
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/AS1T03_141T01_9000003174_21481cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21481cztM0_level2_quad_clean.evt
Size (bytes)489,260,160103,579,200
Size466.6 MB 98.8 MB
Events in quadrant A3,418,501680,252
Events in quadrant B3,582,120694,628
Events in quadrant C3,456,721671,160
Events in quadrant D3,929,348648,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140540
B0146210
C0142570
D0155390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012545
B012547
C012452
D012343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63441131.781211%
B63441422.238335%
C63441923.026482%
D63442523.972257%

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 7609 6344 0 0 0.00% 0.00%
B 7609 6344 2 2 0.03% 0.03%
C 7609 6344 0 0 0.00% 0.00%
D 7609 6344 154 154 2.02% 2.43%

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 14 111 10085 52.77 884 867 174.7
A 13 254 9862 51.49 884 867 174.7
A 0 226 7726 39.26 884 867 174.7
B 0 190 99240 605.73 874 851 162.4
B 0 230 29723 177.75 874 851 162.4
B 12 111 18492 108.61 874 851 162.4
C 14 238 136580 706.34 844 851 192.2
C 3 233 26884 135.48 844 851 192.2
C 13 61 5853 26.03 844 851 192.2
D 7 38 599086 2905.41 859 833 205.9
D 2 234 24396 114.43 859 833 205.9
D 13 153 23702 111.06 859 833 205.9

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