ASTROSAT CZTI

Data Quality Report

Orbit 48622

Creation date: 2024-09-24T08:44:01.171471
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_037T01_9000006436_48622cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48622cztM0_level2_quad_clean.evt
Size (bytes)446,725,440105,577,920
Size426.0 MB 100.7 MB
Events in quadrant A7,157,638665,167
Events in quadrant B2,901,459738,011
Events in quadrant C2,760,966709,970
Events in quadrant D3,208,716628,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258032
B0135062
C0133012
D0145092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65344637.086012%
B6534500.765228%
C6534180.275482%
D6533841.285780%

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 7649 6536 204 204 2.67% 3.12%
B 7649 6536 1 1 0.01% 0.02%
C 7649 6536 1 1 0.01% 0.02%
D 7648 6535 69 69 0.90% 1.06%

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 4045891 28132.01 691 675 143.8
A 13 248 408081 2833.26 691 675 143.8
A 13 254 12508 82.29 691 675 143.8
B 12 16 54562 381.39 714 690 141.3
B 12 111 17902 121.85 714 690 141.3
B 11 111 16608 112.69 714 690 141.3
C 14 254 12603 71.5 705 707 166.4
C 13 61 4740 24.24 705 707 166.4
C 12 249 4632 23.59 705 707 166.4
D 10 199 317176 1830.92 687 666 172.9
D 2 249 145477 837.69 687 666 172.9
D 15 127 37583 213.55 687 666 172.9

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