ASTROSAT CZTI

Data Quality Report

Orbit 21008

Creation date: 2024-06-27T18:22:24.913316
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/AS1A05_025T18_9000003096_21008cztM0_level2.evt modeM0/AS1A05_025T18_9000003096_21008cztM0_level2_quad_clean.evt
Size (bytes)302,788,80066,121,920
Size288.8 MB 63.1 MB
Events in quadrant A2,071,411423,314
Events in quadrant B2,299,669427,908
Events in quadrant C2,099,964421,758
Events in quadrant D2,387,580408,885

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093641
B098441
C093821
D0102451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45591553.399868%
B45591703.728888%
C45591733.794692%
D45591984.343058%

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 4754 4560 0 0 0.00% 0.00%
B 4754 4560 2 2 0.04% 0.04%
C 4754 4560 0 0 0.00% 0.00%
D 4754 4560 51 51 1.07% 1.12%

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 3 137 4655 37.45 538 527 110.2
A 0 226 4653 37.43 538 527 110.2
A 12 194 3877 30.39 538 527 110.2
B 0 189 125322 1206.79 536 522 103.4
B 0 229 17078 160.09 536 522 103.4
B 0 182 13711 127.53 536 522 103.4
C 14 238 81090 664.58 514 516 121.2
C 9 54 4995 36.94 514 516 121.2
C 8 128 4461 32.53 514 516 121.2
D 15 0 106491 829.5 521 502 127.8
D 13 104 77169 600.02 521 502 127.8
D 1 52 71780 557.84 521 502 127.8

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