ASTROSAT CZTI

Data Quality Report

Orbit 47956

Creation date: 2024-08-10T19:39:03.862601
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/AS1A13_062T02_9000006384_47956cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47956cztM0_level2_quad_clean.evt
Size (bytes)530,089,92097,413,120
Size505.5 MB 92.9 MB
Events in quadrant A8,295,859589,761
Events in quadrant B2,844,207687,828
Events in quadrant C2,967,716661,531
Events in quadrant D5,037,792581,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290321
B0128731
C0132952
D0192335

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A615096715.723577%
B6150981.593496%
C6149911.479915%
D61483235.253741%

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 6970 6150 727 727 10.43% 11.82%
B 6970 6151 1 1 0.01% 0.02%
C 6969 6151 41 41 0.59% 0.67%
D 6969 6150 239 239 3.43% 3.89%

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 3428291 24551.13 667 652 139.6
A 0 31 2286855 16375.38 667 652 139.6
A 3 137 7718 50.61 667 652 139.6
B 15 19 60292 438.89 689 670 135.8
B 0 198 25933 185.97 689 670 135.8
B 12 111 17711 125.44 689 670 135.8
C 14 254 104930 636.86 689 694 163.7
C 12 249 89651 543.51 689 694 163.7
C 12 2 51103 307.99 689 694 163.7
D 2 165 2196799 12934.19 676 655 169.8
D 2 37 100723 589.35 676 655 169.8
D 11 224 54977 319.93 676 655 169.8

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