ASTROSAT CZTI

Data Quality Report

Orbit 50154

Creation date: 2025-01-05T15:12:24.359362
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_003T01_9000006442_50154cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50154cztM0_level2_quad_clean.evt
Size (bytes)976,207,68065,494,080
Size931.0 MB 62.5 MB
Events in quadrant A9,537,556448,051
Events in quadrant B3,239,712596,371
Events in quadrant C10,727,755291,947
Events in quadrant D12,163,349222,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325662
B0139081
C0360731
D0403431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6070152625.140033%
B60701061.746293%
C6071299449.316422%
D6071361959.611267%

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 6810 6070 1381 1381 20.28% 22.75%
B 6810 6071 34 34 0.50% 0.56%
C 6811 6071 2819 2819 41.39% 46.43%
D 6810 6070 3571 3571 52.44% 58.83%

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 9 191 2827350 19127.14 584 568 147.8
A 6 250 1009869 6829.34 584 568 147.8
A 8 8 919467 6217.64 584 568 147.8
B 4 206 175369 1318.02 622 601 132.6
B 4 216 83876 628.02 622 601 132.6
B 5 185 52647 392.51 622 601 132.6
C 4 111 4621437 36480.86 445 444 126.7
C 15 147 2323889 18342.65 445 444 126.7
C 0 208 332071 2618.06 445 444 126.7
D 15 185 2769172 21476.05 433 416 128.9
D 15 168 1500868 11638.36 433 416 128.9
D 15 58 1289632 9999.89 433 416 128.9

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