ASTROSAT CZTI

Data Quality Report

Orbit 21599

Creation date: 2024-06-27T18:30:02.816179
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/AS1A05_094T01_9000003204_21599cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21599cztM0_level2_quad_clean.evt
Size (bytes)441,362,88089,971,200
Size420.9 MB 85.8 MB
Events in quadrant A3,071,861573,616
Events in quadrant B3,234,623582,232
Events in quadrant C3,090,417562,310
Events in quadrant D3,524,374549,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133471
B0137401
C0133551
D0147701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6545891.359817%
B65461041.588756%
C65461141.741522%
D65461492.276199%

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 7195 6546 0 0 0.00% 0.00%
B 7196 6547 10 10 0.14% 0.15%
C 7196 6547 0 0 0.00% 0.00%
D 7196 6547 72 72 1.00% 1.10%

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 13 254 8786 49.93 796 777 160.4
A 0 226 7087 39.34 796 777 160.4
A 3 137 6669 36.73 796 777 160.4
B 3 64 46338 300.64 790 770 151.6
B 0 228 42958 278.34 790 770 151.6
B 0 190 32708 210.71 790 770 151.6
C 14 238 121327 674.59 761 764 178.7
C 13 61 5383 25.84 761 764 178.7
C 4 175 2358 8.92 761 764 178.7
D 1 52 478088 2528.35 771 748 188.8
D 2 136 89800 471.69 771 748 188.8
D 14 35 25744 132.4 771 748 188.8

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