ASTROSAT CZTI

Data Quality Report

Orbit 40017

Creation date: 2024-06-27T22:11:20.599816
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/AS1A12_054T03_9000005516_40017cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40017cztM0_level2_quad_clean.evt
Size (bytes)360,449,28096,033,600
Size343.8 MB 91.6 MB
Events in quadrant A3,252,609641,081
Events in quadrant B3,413,321654,785
Events in quadrant C2,890,148625,049
Events in quadrant D3,323,233571,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132303
B0140902
C0123572
D0138582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951350.588136%
B59511021.713998%
C5951300.504117%
D59511272.134095%

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 7234 5952 27 27 0.37% 0.45%
B 7234 5952 50 50 0.69% 0.84%
C 7234 5952 20 20 0.28% 0.34%
D 7234 5952 98 98 1.35% 1.65%

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 521505 3898.58 650 636 133.6
A 13 248 150999 1125.43 650 636 133.6
A 2 79 30581 224.13 650 636 133.6
B 4 171 724986 5759.52 645 627 125.8
B 0 230 65403 515.05 645 627 125.8
B 0 218 23983 185.71 645 627 125.8
C 15 214 245649 1644.29 634 639 149.0
C 14 254 119102 795.02 634 639 149.0
C 15 208 20694 134.59 634 639 149.0
D 2 250 410544 2640.05 630 612 155.3
D 2 31 167544 1075.08 630 612 155.3
D 13 249 131490 842.88 630 612 155.3

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