ASTROSAT CZTI

Data Quality Report

Orbit 35618

Creation date: 2022-04-30T22:54:23.027283
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/AS1A10_065T04_9000005098_35618cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35618cztM0_level2_quad_clean.evt
Size (bytes)391,584,96066,300,480
Size373.4 MB 63.2 MB
Events in quadrant A2,202,512431,952
Events in quadrant B2,839,506428,000
Events in quadrant C3,107,743417,765
Events in quadrant D3,387,646397,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095621
B0115181
C0120451
D0131961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A472430.063506%
B47241503.175275%
C47242114.466554%
D47242395.059272%

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 6005 4725 0 0 0.00% 0.00%
B 6005 4725 105 105 1.75% 2.22%
C 6005 4725 171 171 2.85% 3.62%
D 6005 4725 211 211 3.51% 4.47%

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 94900 852.35 540 529 110.7
A 13 6 10591 90.88 540 529 110.7
A 13 254 6913 57.66 540 529 110.7
B 5 172 650392 6201.51 532 517 104.8
B 3 112 26746 250.29 532 517 104.8
B 15 85 18987 176.25 532 517 104.8
C 1 23 459125 3783.26 517 519 121.2
C 0 10 329558 2714.4 517 519 121.2
C 15 214 191150 1572.61 517 519 121.2
D 7 80 551963 4297.5 519 502 128.3
D 12 233 247020 1921.1 519 502 128.3
D 10 1 130483 1012.93 519 502 128.3

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