ASTROSAT CZTI

Data Quality Report

Orbit 25328

Creation date: 2024-06-27T19:16:25.191293
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/AS1A09_059T01_9000003706_25328cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25328cztM0_level2_quad_clean.evt
Size (bytes)524,459,52071,392,320
Size500.2 MB 68.1 MB
Events in quadrant A3,651,247441,976
Events in quadrant B3,345,522445,005
Events in quadrant C4,333,930416,588
Events in quadrant D4,117,282410,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152020
B0139240
C0169640
D0165600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64131061.652893%
B64131121.746453%
C64124977.751092%
D64121021.590767%

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 7563 6413 0 0 0.00% 0.00%
B 7563 6413 1 1 0.01% 0.02%
C 7562 6412 223 223 2.95% 3.48%
D 7562 6412 20 20 0.26% 0.31%

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 15 173 346710 2038.04 858 843 169.7
A 13 254 9779 52.66 858 843 169.7
A 3 137 7406 38.67 858 843 169.7
B 3 112 29111 176.81 847 826 160.0
B 12 111 19334 115.7 847 826 160.0
B 11 111 17507 104.28 847 826 160.0
C 9 54 1116249 6173.36 788 796 180.7
C 14 238 127096 698.99 788 796 180.7
C 3 233 13561 70.64 788 796 180.7
D 8 195 827435 4200.73 820 797 196.8
D 12 233 56564 283.39 820 797 196.8
D 1 52 49684 248.43 820 797 196.8

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