ASTROSAT CZTI

Data Quality Report

Orbit 12529

Creation date: 2024-06-27T16:28:42.547163
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/AS1A04_230T01_9000001854_12529cztM0_level2.evt modeM0/AS1A04_230T01_9000001854_12529cztM0_level2_quad_clean.evt
Size (bytes)491,693,76064,719,360
Size468.9 MB 61.7 MB
Events in quadrant A3,526,245386,259
Events in quadrant B3,556,129389,913
Events in quadrant C2,937,663386,150
Events in quadrant D4,438,397352,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144122
B0145381
C0129731
D0175431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6371821.287082%
B6371951.491132%
C6371470.737718%
D63714467.000471%

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 7282 6372 1 1 0.01% 0.02%
B 7282 6372 28 28 0.38% 0.44%
C 7282 6372 0 0 0.00% 0.00%
D 7282 6372 350 350 4.81% 5.49%

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 1 162 160786 1000.86 775 759 159.9
A 1 178 100300 622.56 775 759 159.9
A 1 161 83907 520.04 775 759 159.9
B 4 239 369875 2500.06 771 755 147.6
B 0 205 58031 387.93 771 755 147.6
B 11 51 49768 331.97 771 755 147.6
C 13 61 5400 26.52 753 757 175.1
C 3 202 1907 6.57 753 757 175.1
C 14 234 1739 5.61 753 757 175.1
D 1 52 1359405 7665.61 731 710 177.2
D 8 195 164995 926.88 731 710 177.2
D 13 104 63709 355.43 731 710 177.2

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