ASTROSAT CZTI

Data Quality Report

Orbit 35561

Creation date: 2022-04-26T22:39:09.088444
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_026T01_9000005092_35561cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35561cztM0_level2_quad_clean.evt
Size (bytes)460,258,56096,600,960
Size438.9 MB 92.1 MB
Events in quadrant A3,613,208632,982
Events in quadrant B3,205,816644,696
Events in quadrant C3,379,891639,995
Events in quadrant D3,359,128615,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146893
B0130762
C0134352
D0136842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5606220.392437%
B56061612.871923%
C56061532.729219%
D5606901.605423%

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 7248 5607 1 1 0.01% 0.02%
B 7248 5607 107 107 1.48% 1.91%
C 7248 5607 110 110 1.52% 1.96%
D 7248 5607 67 67 0.92% 1.19%

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 15 169 939259 7120.28 647 633 131.8
A 10 83 143887 1086.7 647 633 131.8
A 13 6 18442 135.1 647 633 131.8
B 5 172 416640 3385.03 641 622 122.9
B 5 200 190411 1544.26 641 622 122.9
B 0 190 45982 369.08 641 622 122.9
C 0 10 415350 2827.02 634 640 146.7
C 15 214 249076 1693.55 634 640 146.7
C 3 233 82657 559.1 634 640 146.7
D 8 195 229557 1472.6 637 618 155.5
D 2 250 191794 1229.7 637 618 155.5
D 12 233 162855 1043.56 637 618 155.5

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