ASTROSAT CZTI

Data Quality Report

Orbit 25574

Creation date: 2024-06-27T19:19:09.937247
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_043T02_9000003726_25574cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25574cztM0_level2_quad_clean.evt
Size (bytes)496,157,76080,550,720
Size473.2 MB 76.8 MB
Events in quadrant A3,205,665515,340
Events in quadrant B3,362,779527,880
Events in quadrant C3,233,557488,247
Events in quadrant D4,791,187462,464

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133500
B0138620
C0134950
D0185740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6385240.375881%
B6386300.469778%
C6386430.673348%
D63863134.901347%

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 8615 6387 3 3 0.03% 0.05%
B 8616 6388 1 1 0.01% 0.02%
C 8616 6388 0 0 0.00% 0.00%
D 8616 6388 254 254 2.95% 3.98%

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 15565 88.4 826 810 166.9
A 13 254 9977 54.92 826 810 166.9
A 3 137 7336 39.1 826 810 166.9
B 15 33 52235 331.47 826 808 155.1
B 0 219 22724 141.26 826 808 155.1
B 0 190 20092 124.29 826 808 155.1
C 14 238 127086 687.51 781 788 183.7
C 3 233 43709 233.64 781 788 183.7
C 1 90 9981 50.04 781 788 183.7
D 1 52 1369892 7318.28 767 747 187.1
D 8 195 429021 2289.19 767 747 187.1
D 2 120 29353 152.9 767 747 187.1

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