ASTROSAT CZTI

Data Quality Report

Orbit 35526

Creation date: 2022-04-24T12:51:13.387477
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/AS1A11_097T09_9000005086_35526cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35526cztM0_level2_quad_clean.evt
Size (bytes)406,290,24051,744,960
Size387.5 MB 49.3 MB
Events in quadrant A2,755,535307,454
Events in quadrant B2,701,536312,108
Events in quadrant C3,077,090299,764
Events in quadrant D3,407,568273,490

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115243
B0114442
C0122662
D0137892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532970.131357%
B5329390.731845%
C53291222.289360%
D53292955.535748%

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 6973 5330 0 0 0.00% 0.00%
B 6973 5330 17 17 0.24% 0.32%
C 6973 5330 95 95 1.36% 1.78%
D 6973 5330 222 222 3.18% 4.17%

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 200653 1611.0 619 608 124.2
A 10 83 134322 1076.82 619 608 124.2
A 8 6 17176 133.42 619 608 124.2
B 5 172 147861 1230.5 614 598 119.7
B 5 236 94744 786.67 614 598 119.7
B 5 255 24463 199.41 614 598 119.7
C 0 10 341676 2442.16 596 600 139.7
C 15 214 220693 1575.9 596 600 139.7
C 0 207 75324 535.04 596 600 139.7
D 10 199 562640 3888.77 586 568 144.5
D 2 250 354694 2450.07 586 568 144.5
D 8 195 86512 594.62 586 568 144.5

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