ASTROSAT CZTI

Data Quality Report

Orbit 35115

Creation date: 2022-03-28T18:00:12.430235
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/AS1T05_015T01_9000005026_35115cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35115cztM0_level2_quad_clean.evt
Size (bytes)622,540,80055,851,840
Size593.7 MB 53.3 MB
Events in quadrant A2,857,754335,827
Events in quadrant B4,513,377340,654
Events in quadrant C3,192,967329,662
Events in quadrant D7,920,483301,538

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117533
B0167332
C0125162
D0273552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5469140.255988%
B546961811.300055%
C5469821.499360%
D546966112.086305%

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 7352 5470 2 2 0.03% 0.04%
B 7352 5470 474 474 6.45% 8.67%
C 7352 5470 68 68 0.92% 1.24%
D 7352 5470 669 669 9.10% 12.23%

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 85231 602.27 707 696 140.4
A 15 169 20653 142.18 707 696 140.4
A 15 174 11633 77.92 707 696 140.4
B 0 190 1289749 10475.17 656 641 123.1
B 5 172 503373 4085.15 656 641 123.1
B 0 189 56321 452.45 656 641 123.1
C 0 10 273029 1762.81 675 681 154.5
C 15 214 230883 1490.01 675 681 154.5
C 14 67 28513 180.14 675 681 154.5
D 8 195 4490219 27347.76 667 651 164.2
D 5 223 245985 1494.43 667 651 164.2
D 13 249 124203 752.6 667 651 164.2

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