ASTROSAT CZTI

Data Quality Report

Orbit 51645

Creation date: 2025-04-16T01:26:57.983215
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/AS1A13_037T05_9000006460_51645cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51645cztM0_level2_quad_clean.evt
Size (bytes)676,644,480114,894,720
Size645.3 MB 109.6 MB
Events in quadrant A7,283,861694,502
Events in quadrant B4,755,874826,400
Events in quadrant C5,469,973733,677
Events in quadrant D6,907,597659,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272930
B0195870
C0218710
D0261290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8128101312.463091%
B81282102.583661%
C81283023.715551%
D81296588.094477%

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 8128 8128 588 588 7.23% 7.23%
B 8128 8128 47 47 0.58% 0.58%
C 8128 8128 228 228 2.81% 2.81%
D 8129 8129 521 521 6.41% 6.41%

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 12 250 2053892 9613.28 868 847 213.6
A 7 64 786064 3676.74 868 847 213.6
A 12 3 340591 1590.83 868 847 213.6
B 4 170 216511 1123.26 895 863 192.0
B 10 44 136939 708.79 895 863 192.0
B 0 171 121915 630.53 895 863 192.0
C 12 254 756696 3181.23 868 859 237.6
C 14 245 475838 1999.13 868 859 237.6
C 13 3 231505 970.76 868 859 237.6
D 3 12 1159486 4925.05 846 818 235.3
D 5 113 494248 2097.38 846 818 235.3
D 8 176 299784 1270.79 846 818 235.3

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