ASTROSAT CZTI

Data Quality Report

Orbit 40071

Creation date: 2024-06-27T22:11:58.629854
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_40071cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40071cztM0_level2_quad_clean.evt
Size (bytes)374,088,96089,856,000
Size356.8 MB 85.7 MB
Events in quadrant A3,549,743596,134
Events in quadrant B2,439,141636,756
Events in quadrant C4,556,785572,267
Events in quadrant D2,890,899546,161

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138242
B0108711
C0171381
D0125201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52821923.634987%
B5282300.567967%
C52823787.156380%
D52821082.044680%

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 7405 5283 193 193 2.61% 3.65%
B 7405 5283 22 22 0.30% 0.42%
C 7405 5283 429 429 5.79% 8.12%
D 7405 5283 79 79 1.07% 1.50%

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 2 79 871922 7526.09 571 560 115.8
A 10 83 448391 3867.99 571 560 115.8
A 6 10 8940 72.38 571 560 115.8
B 5 32 62251 557.49 579 564 110.7
B 0 230 28607 253.43 579 564 110.7
B 4 171 28036 248.27 579 564 110.7
C 9 187 1980862 15320.63 555 560 129.3
C 15 214 217085 1675.15 555 560 129.3
C 0 10 88949 683.82 555 560 129.3
D 2 249 265598 1955.91 556 542 135.5
D 12 227 137269 1008.94 556 542 135.5
D 2 250 128048 940.9 556 542 135.5

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