ASTROSAT CZTI

Data Quality Report

Orbit 51233

Creation date: 2025-03-19T06:06:21.002086
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/AS1C07_001T01_9000006454_51233cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51233cztM0_level2_quad_clean.evt
Size (bytes)531,342,720101,171,520
Size506.7 MB 96.5 MB
Events in quadrant A5,419,906645,301
Events in quadrant B4,681,302711,503
Events in quadrant C5,325,467635,677
Events in quadrant D3,716,460598,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208792
B0185932
C0204802
D0161132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67762613.851830%
B67763465.106257%
C67763925.785124%
D67761712.523613%

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 9131 6777 108 108 1.18% 1.59%
B 9131 6777 131 131 1.43% 1.93%
C 9131 6777 352 352 3.85% 5.19%
D 9131 6777 133 133 1.46% 1.96%

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 3 1079115 6067.74 714 696 177.7
A 9 160 732401 4116.95 714 696 177.7
A 8 26 295196 1657.01 714 696 177.7
B 5 185 531006 3506.64 716 691 151.2
B 4 171 288705 1904.46 716 691 151.2
B 8 128 226725 1494.62 716 691 151.2
C 4 12 900980 4645.8 701 695 193.8
C 12 247 772304 3981.79 701 695 193.8
C 0 145 251006 1291.7 701 695 193.8
D 10 172 189805 965.25 695 671 195.9
D 2 207 178987 910.04 695 671 195.9
D 10 181 172853 878.73 695 671 195.9

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