ASTROSAT CZTI

Data Quality Report

Orbit 47550

Creation date: 2024-07-14T02:05:02.636340
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/AS1C09_002T01_9000006334_47550cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47550cztM0_level2_quad_clean.evt
Size (bytes)467,593,920109,938,240
Size445.9 MB 104.8 MB
Events in quadrant A7,083,785716,580
Events in quadrant B3,481,944752,905
Events in quadrant C2,868,498724,552
Events in quadrant D3,356,738670,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254891
B0150661
C0136171
D0147311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66713755.621346%
B6671971.454055%
C667280.119904%
D6672330.494604%

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 7586 6672 90 90 1.19% 1.35%
B 7586 6672 38 38 0.50% 0.57%
C 7587 6673 0 0 0.00% 0.00%
D 7587 6673 20 20 0.26% 0.30%

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 3981121 26292.36 727 710 151.4
A 9 191 273952 1804.88 727 710 151.4
A 13 248 18597 118.15 727 710 151.4
B 0 200 315180 2202.48 734 711 142.8
B 0 190 83545 580.15 734 711 142.8
B 0 198 80335 557.67 734 711 142.8
C 6 247 30057 174.54 721 725 168.1
C 14 254 26041 150.64 721 725 168.1
C 13 61 5020 25.56 721 725 168.1
D 2 165 163056 914.26 718 695 177.6
D 7 55 88365 493.67 718 695 177.6
D 11 192 70772 394.61 718 695 177.6

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