ASTROSAT CZTI

Data Quality Report

Orbit 36133

Creation date: 2022-08-10T18:28:47.261546
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/AS1T04_069T01_9000005158_36133cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36133cztM0_level2_quad_clean.evt
Size (bytes)445,256,64050,486,400
Size424.6 MB 48.1 MB
Events in quadrant A2,657,052300,178
Events in quadrant B2,938,321299,902
Events in quadrant C3,361,457290,696
Events in quadrant D4,172,785271,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110423
B0120382
C0131072
D0158642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5228100.191278%
B52281142.180566%
C52281482.830910%
D52284408.416220%

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 7232 5229 4 4 0.06% 0.08%
B 7232 5229 75 75 1.04% 1.43%
C 7232 5229 120 120 1.66% 2.29%
D 7232 5229 350 350 4.84% 6.69%

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 10 83 171568 1374.74 614 603 124.4
A 15 223 60570 482.2 614 603 124.4
A 9 143 31370 247.4 614 603 124.4
B 5 172 455975 3883.2 608 590 117.3
B 5 255 40916 343.87 608 590 117.3
B 4 232 22556 187.31 608 590 117.3
C 0 207 538366 3937.74 589 592 136.6
C 15 214 221150 1614.99 589 592 136.6
C 0 10 190752 1392.41 589 592 136.6
D 12 17 1110887 7806.7 577 560 142.2
D 2 250 252513 1771.48 577 560 142.2
D 13 249 195302 1369.23 577 560 142.2

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