ASTROSAT CZTI

Data Quality Report

Orbit 18322

Creation date: 2024-06-27T17:48:19.849416
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/AS1A06_006T01_9000002720_18322cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18322cztM0_level2_quad_clean.evt
Size (bytes)571,659,84079,395,840
Size545.2 MB 75.7 MB
Events in quadrant A3,365,343495,920
Events in quadrant B3,592,826503,147
Events in quadrant C3,342,537490,049
Events in quadrant D6,559,318448,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141572
B0148342
C0138752
D0241252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6684600.897666%
B6684711.062238%
C6684610.912627%
D66856539.768138%

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 8919 6686 25 25 0.28% 0.37%
B 8919 6686 11 11 0.12% 0.16%
C 8919 6686 1 1 0.01% 0.01%
D 8920 6687 572 572 6.41% 8.55%

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 4 2 87205 516.04 838 822 167.4
A 15 174 53698 315.88 838 822 167.4
A 0 226 7242 38.35 838 822 167.4
B 7 220 191238 1190.88 846 826 159.9
B 0 198 24456 147.79 846 826 159.9
B 0 197 21053 126.5 846 826 159.9
C 14 238 125794 668.81 810 817 186.9
C 3 233 51880 273.26 810 817 186.9
C 13 61 5870 27.04 810 817 186.9
D 7 238 2937596 15035.98 793 770 195.3
D 1 52 320865 1638.82 793 770 195.3
D 2 69 170808 870.56 793 770 195.3

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