ASTROSAT CZTI

Data Quality Report

Orbit 20210530_A10_094T79_9000004422_level2

Creation date: 2025-12-26T05:10:29.348039
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/AS1A10_094T79_9000004422cztM0_level2.fits modeM0/AS1A10_094T79_9000004422cztM0_level2_quad_clean.evt
Size (bytes)382,291,200461,698,560
Size364.6 MB 440.3 MB
Events in quadrant A2,438,7243,143,042
Events in quadrant B2,269,9763,076,190
Events in quadrant C2,342,3822,953,080
Events in quadrant D1,862,5942,150,521

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0829550
B01176150
C0864720
D02029190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07900
B07900
C07900
D07900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A387303901.006971%
B387305381.389104%
C387307992.063000%
D38730957924.732765%

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 44735 38724 0 0 0.00% 0.00%
B 44734 38726 0 0 0.00% 0.00%
C 44734 38722 0 0 0.00% 0.00%
D 44734 38699 0 0 0.00% 0.00%

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 0 29 1980 8.84 636 600 156.1
A 7 110 1879 8.19 636 600 156.1
A 9 19 1816 7.79 636 600 156.1
B 2 9 1908 11.31 600 576 117.8
B 2 8 1537 8.16 600 576 117.8
B 5 128 1521 8.02 600 576 117.8
C 1 81 1818 7.95 620 584 155.2
C 1 80 1787 7.75 620 584 155.2
C 3 187 1605 6.58 620 584 155.2
D 15 46 1396 6.46 532 488 140.5
D 10 189 1302 5.79 532 488 140.5
D 6 231 1297 5.76 532 488 140.5

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