ASTROSAT CZTI

Data Quality Report

Orbit 36521

Creation date: 2024-06-27T21:27:52.929329
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/AS1T05_035T01_9000005214_36521cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36521cztM0_level2_quad_clean.evt
Size (bytes)436,230,72069,019,200
Size416.0 MB 65.8 MB
Events in quadrant A2,791,984446,702
Events in quadrant B2,685,675452,385
Events in quadrant C2,958,621438,015
Events in quadrant D4,438,595405,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111503
B0107172
C0115922
D0163592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4959170.342811%
B495990.181488%
C49591042.097197%
D495950410.163339%

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 7023 4960 3 3 0.04% 0.06%
B 7023 4960 1 1 0.01% 0.02%
C 7023 4960 59 59 0.84% 1.19%
D 7023 4960 436 436 6.21% 8.79%

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 188932 1438.87 657 648 130.9
A 9 143 46943 353.79 657 648 130.9
A 13 6 10050 71.85 657 648 130.9
B 5 172 30272 243.05 648 634 121.9
B 0 189 29636 237.83 648 634 121.9
B 4 81 26481 211.96 648 634 121.9
C 0 10 306272 2139.79 625 632 142.8
C 15 214 212930 1486.3 625 632 142.8
C 13 61 4283 25.56 625 632 142.8
D 2 250 852781 5706.26 615 601 149.3
D 13 171 357360 2388.89 615 601 149.3
D 13 249 255507 1706.87 615 601 149.3

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