ASTROSAT CZTI

Data Quality Report

Orbit 06774

Creation date: 2024-06-27T15:11:27.575556
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/AS1A02_006T01_9000000934_06774cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06774cztM0_level2_quad_clean.evt
Size (bytes)284,273,28042,891,840
Size271.1 MB 40.9 MB
Events in quadrant A1,515,099268,907
Events in quadrant B1,536,503270,943
Events in quadrant C1,488,925270,504
Events in quadrant D3,823,806234,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071710
B071890
C071840
D0139260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358210.027917%
B358220.055835%
C358210.027917%
D358245212.618649%

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 3582 3582 0 0 0.00% 0.00%
B 3582 3582 0 0 0.00% 0.00%
C 3582 3582 1 1 0.03% 0.03%
D 3582 3582 385 385 10.75% 10.75%

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 8 15 9898 117.61 390 382 80.9
A 0 226 3750 41.63 390 382 80.9
A 12 194 3647 40.35 390 382 80.9
B 4 81 14741 186.38 391 380 77.1
B 12 111 7657 94.44 391 380 77.1
B 0 187 6423 78.43 391 380 77.1
C 10 22 11706 127.23 376 378 89.0
C 9 16 5931 62.37 376 378 89.0
C 13 61 2808 27.29 376 378 89.0
D 12 220 1341303 15144.1 355 343 88.5
D 2 33 358845 4048.73 355 343 88.5
D 2 152 334477 3773.53 355 343 88.5

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