ASTROSAT CZTI

Data Quality Report

Orbit 05920

Creation date: 2024-06-27T15:00:50.913728
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/AS1A02_174T01_9000000766_05920cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05920cztM0_level2_quad_clean.evt
Size (bytes)585,112,32064,920,960
Size558.0 MB 61.9 MB
Events in quadrant A2,908,955398,361
Events in quadrant B3,316,144403,856
Events in quadrant C2,860,913396,469
Events in quadrant D8,212,298331,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128903
B0139642
C0127922
D0287792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227270.433596%
B62271001.605910%
C6227130.208768%
D6227156825.180665%

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 7512 6228 1 1 0.01% 0.02%
B 7512 6228 38 38 0.51% 0.61%
C 7512 6228 0 0 0.00% 0.00%
D 7512 6228 1459 1459 19.42% 23.43%

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 0 47 25099 162.59 738 722 149.9
A 15 236 20880 134.45 738 722 149.9
A 0 50 18161 116.31 738 722 149.9
B 15 255 178283 1246.84 751 736 142.4
B 4 80 84806 590.39 751 736 142.4
B 15 204 43524 300.48 751 736 142.4
C 9 247 22164 128.24 723 730 167.1
C 13 61 5807 30.38 723 730 167.1
C 7 235 4250 21.06 723 730 167.1
D 1 20 4968606 30359.46 664 644 163.6
D 2 63 417254 2545.92 664 644 163.6
D 2 152 110235 669.72 664 644 163.6

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