ASTROSAT CZTI

Data Quality Report

Orbit 17516

Creation date: 2024-06-27T17:37:30.918784
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/AS1T03_068T01_9000002594_17516cztM0_level2.evt modeM0/AS1T03_068T01_9000002594_17516cztM0_level2_quad_clean.evt
Size (bytes)191,099,52057,841,920
Size182.2 MB 55.2 MB
Events in quadrant A1,396,398401,336
Events in quadrant B1,372,335399,817
Events in quadrant C1,349,470374,772
Events in quadrant D1,474,807373,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059291
B058371
C057801
D062991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2830220.777385%
B283080.282686%
C2830130.459364%
D2830572.014134%

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 2830 2830 8 8 0.28% 0.28%
B 2830 2830 0 0 0.00% 0.00%
C 2830 2830 0 0 0.00% 0.00%
D 2830 2830 31 31 1.10% 1.10%

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 15 174 39486 543.05 353 346 72.1
A 0 226 3150 38.9 353 346 72.1
A 12 194 2654 32.02 353 346 72.1
B 4 216 10978 160.89 344 335 66.2
B 12 111 6998 100.72 344 335 66.2
B 11 111 6260 89.57 344 335 66.2
C 14 238 51733 676.09 327 328 76.0
C 3 233 20877 270.26 327 328 76.0
C 13 61 2252 25.3 327 328 76.0
D 13 189 144471 1759.01 337 328 81.9
D 1 52 27622 333.07 337 328 81.9
D 13 232 12589 149.62 337 328 81.9

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