ASTROSAT CZTI

Data Quality Report

Orbit 50547

Creation date: 2025-02-01T03:00:22.506715
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/AS1T05_239T01_9000006444_50547cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50547cztM0_level2_quad_clean.evt
Size (bytes)755,449,92086,345,280
Size720.5 MB 82.3 MB
Events in quadrant A6,945,623553,636
Events in quadrant B4,381,740667,688
Events in quadrant C10,291,356371,381
Events in quadrant D5,822,330550,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251881
B0177681
C0352087
D0220161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6758101415.004439%
B67582703.995265%
C6757300644.487198%
D67584516.673572%

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 7758 6759 928 928 11.96% 13.73%
B 7758 6759 191 191 2.46% 2.83%
C 7756 6756 2205 2205 28.43% 32.64%
D 7758 6759 475 475 6.12% 7.03%

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 3 130 1760887 10706.65 664 647 164.4
A 8 247 900175 5471.38 664 647 164.4
A 12 250 657168 3993.29 664 647 164.4
B 7 0 297498 1983.94 704 680 149.6
B 15 54 230421 1535.59 704 680 149.6
B 4 170 181925 1211.45 704 680 149.6
C 15 178 3893055 26053.5 533 528 149.4
C 4 12 1045027 6991.05 533 528 149.4
C 0 208 959218 6416.71 533 528 149.4
D 8 246 986243 5101.85 683 657 193.2
D 6 42 666456 3446.48 683 657 193.2
D 7 61 422359 2182.92 683 657 193.2

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