ASTROSAT CZTI

Data Quality Report

Orbit 47042

Creation date: 2024-06-27T23:31:05.800921
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/AS1C09_005T01_9000006296_47042cztM0_level2.fits modeM0/AS1C09_005T01_9000006296_47042cztM0_level2_quad_clean.evt
Size (bytes)554,929,92098,216,640
Size529.2 MB 93.7 MB
Events in quadrant A6,004,122676,552
Events in quadrant B6,206,063580,579
Events in quadrant C3,537,793676,135
Events in quadrant D4,305,708601,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221811
B0226091
C0152011
D0171311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62942053.257070%
B6295123219.571088%
C6294610.969177%
D62943836.085160%

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 7199 6295 1 1 0.01% 0.02%
B 7200 6296 913 913 12.68% 14.50%
C 7199 6295 43 43 0.60% 0.68%
D 7199 6295 271 271 3.76% 4.31%

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 3269799 22760.61 691 675 143.6
A 9 191 36927 252.39 691 675 143.6
A 13 254 11112 72.66 691 675 143.6
B 3 112 3276870 26197.36 640 620 125.1
B 4 171 142573 1135.08 640 620 125.1
B 5 255 120891 961.7 640 620 125.1
C 14 254 855816 5404.46 679 683 158.2
C 3 233 14397 86.67 679 683 158.2
C 14 67 7737 44.58 679 683 158.2
D 1 52 1145160 6834.02 667 645 167.5
D 13 249 142236 845.45 667 645 167.5
D 2 249 92905 550.89 667 645 167.5

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