ASTROSAT CZTI

Data Quality Report

Orbit 48401

Creation date: 2024-09-09T11:06:58.797567
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_029T01_9000006426_48401cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48401cztM0_level2_quad_clean.evt
Size (bytes)734,866,560144,936,000
Size700.8 MB 138.2 MB
Events in quadrant A10,121,531961,181
Events in quadrant B7,182,675895,157
Events in quadrant C4,094,352995,932
Events in quadrant D5,082,119889,895

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367842
B0277922
C0190632
D0219142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93175495.892455%
B9318141615.196394%
C9318360.386349%
D93182432.607856%

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 11337 9319 237 237 2.09% 2.54%
B 11338 9319 829 829 7.31% 8.90%
C 11338 9320 2 2 0.02% 0.02%
D 11338 9320 145 145 1.28% 1.56%

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 10 83 5490071 25805.71 1022 1000 212.7
A 13 248 629217 2953.43 1022 1000 212.7
A 0 31 41420 190.03 1022 1000 212.7
B 12 16 3128433 16865.2 935 907 185.4
B 4 21 294727 1584.43 935 907 185.4
B 8 234 30824 161.33 935 907 185.4
C 14 254 27534 108.63 1031 1034 243.9
C 15 208 23397 91.67 1031 1034 243.9
C 9 237 11415 42.55 1031 1034 243.9
D 2 249 693951 2675.76 1019 988 259.0
D 5 222 137911 528.7 1019 988 259.0
D 5 32 109500 419.0 1019 988 259.0

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