ASTROSAT CZTI

Data Quality Report

Orbit 46537

Creation date: 2024-06-27T23:24:26.379764
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/AS1A13_091T07_9000006226_46537cztM0_level2.fits modeM0/AS1A13_091T07_9000006226_46537cztM0_level2_quad_clean.evt
Size (bytes)393,200,64082,866,240
Size375.0 MB 79.0 MB
Events in quadrant A5,173,582535,175
Events in quadrant B3,420,606564,404
Events in quadrant C2,468,270546,801
Events in quadrant D3,085,836495,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140481340925992140479790317614
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01165
B011715
C011311
D012012

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211262190
B0150841327
C0125041252
D0142331381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51401653.210117%
B52621252.375523%
C5243220.419607%
D52671021.936586%

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 6730 5347 39 39 0.58% 0.73%
B 6728 5446 49 49 0.73% 0.90%
C 6724 5408 18 18 0.27% 0.33%
D 6729 5432 79 79 1.17% 1.45%

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 2274902 18418.66 585 571 123.5
A 9 191 301328 2435.68 585 571 123.5
A 14 235 267846 2164.53 585 571 123.5
B 10 128 350925 2963.25 594 575 118.2
B 3 112 327718 2766.96 594 575 118.2
B 0 189 176355 1486.74 594 575 118.2
C 14 254 154886 1110.83 586 589 138.9
C 12 2 10762 73.24 586 589 138.9
C 1 3 7647 50.81 586 589 138.9
D 13 249 193431 1282.91 590 570 150.3
D 8 176 179772 1192.05 590 570 150.3
D 2 37 132589 878.19 590 570 150.3

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