ASTROSAT CZTI

Data Quality Report

Orbit 43776

Creation date: 2024-06-27T22:55:38.331299
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_026T01_9000005904_43776cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43776cztM0_level2_quad_clean.evt
Size (bytes)614,260,800103,752,000
Size585.8 MB 98.9 MB
Events in quadrant A5,505,775703,946
Events in quadrant B3,787,549759,851
Events in quadrant C6,293,365654,351
Events in quadrant D6,667,715587,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210683
B0152081
C0228371
D0240761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62444997.991672%
B62442223.555413%
C624590914.555645%
D624596915.516413%

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 7349 6244 287 287 3.91% 4.60%
B 7349 6244 77 77 1.05% 1.23%
C 7350 6246 853 853 11.61% 13.66%
D 7350 6246 736 736 10.01% 11.78%

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 15 223 1150906 7571.1 735 720 151.9
A 10 83 902333 5934.87 735 720 151.9
A 2 79 174960 1146.93 735 720 151.9
B 5 172 169308 1128.3 753 731 149.4
B 5 235 153100 1019.82 753 731 149.4
B 0 200 138293 920.71 753 731 149.4
C 15 174 2592743 15631.76 709 715 165.8
C 15 158 469108 2824.74 709 715 165.8
C 15 190 170265 1022.51 709 715 165.8
D 5 235 1228572 6867.86 698 676 178.8
D 12 33 1032233 5769.7 698 676 178.8
D 1 52 708286 3957.8 698 676 178.8

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