ASTROSAT CZTI

Data Quality Report

Orbit 25760

Creation date: 2024-06-27T19:21:12.087185
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/AS1A09_147T01_9000003754_25760cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25760cztM0_level2_quad_clean.evt
Size (bytes)528,840,00073,304,640
Size504.3 MB 69.9 MB
Events in quadrant A3,413,473449,050
Events in quadrant B3,472,562454,261
Events in quadrant C3,306,770432,615
Events in quadrant D5,367,223415,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144300
B0145740
C0140670
D0203430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6722410.609938%
B6722961.428146%
C6722620.922345%
D67225738.524249%

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 7727 6722 0 0 0.00% 0.00%
B 7727 6722 35 35 0.45% 0.52%
C 7727 6722 1 1 0.01% 0.01%
D 7727 6722 532 532 6.88% 7.91%

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 6 16 121896 715.54 847 832 169.2
A 0 13 26284 150.43 847 832 169.2
A 13 254 10366 56.35 847 832 169.2
B 7 219 59155 366.89 838 816 159.0
B 7 235 36904 226.95 838 816 159.0
B 0 190 33931 208.26 838 816 159.0
C 14 238 129538 679.65 806 813 189.4
C 3 233 34071 175.6 806 813 189.4
C 13 61 5503 24.76 806 813 189.4
D 1 52 1606593 8543.73 781 763 188.0
D 12 1 340204 1805.98 781 763 188.0
D 7 80 256577 1361.04 781 763 188.0

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