ASTROSAT CZTI

Data Quality Report

Orbit 27195

Creation date: 2024-06-27T19:37:34.395563
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_243T01_9000003918_27195cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27195cztM0_level2_quad_clean.evt
Size (bytes)591,799,68097,056,000
Size564.4 MB 92.6 MB
Events in quadrant A3,450,936643,669
Events in quadrant B6,002,967627,050
Events in quadrant C3,381,465613,311
Events in quadrant D4,642,901597,398

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145290
B0223820
C0143460
D0181830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6569891.354849%
B656895714.570646%
C65681271.933618%
D65681832.786236%

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 7664 6570 0 0 0.00% 0.00%
B 7663 6569 569 569 7.43% 8.66%
C 7663 6569 3 3 0.04% 0.05%
D 7663 6569 112 112 1.46% 1.70%

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 6 16 34383 191.69 878 862 174.9
A 13 254 10297 53.96 878 862 174.9
A 14 235 9191 47.63 878 862 174.9
B 3 64 2689998 17555.49 806 786 153.2
B 15 33 92206 596.8 806 786 153.2
B 0 190 29294 186.1 806 786 153.2
C 14 238 132771 684.29 825 829 192.8
C 15 208 28225 142.08 825 829 192.8
C 13 61 5632 24.91 825 829 192.8
D 1 52 1105001 5000.23 832 820 220.8
D 2 250 141232 635.85 832 820 220.8
D 12 233 90949 408.14 832 820 220.8

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