ASTROSAT CZTI

Data Quality Report

Orbit 03498

Creation date: 2024-06-27T14:30:11.495163
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/AS1G05_211T01_9000000464_03498cztM0_level2.evt modeM0/AS1G05_211T01_9000000464_03498cztM0_level2_quad_clean.evt
Size (bytes)204,439,68028,002,240
Size195.0 MB 26.7 MB
Events in quadrant A1,776,270164,594
Events in quadrant B1,454,391166,913
Events in quadrant C1,537,947160,951
Events in quadrant D1,233,998158,387

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072551
B060491
C064791
D056751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27501645.963636%
B2750521.890909%
C2750812.945455%
D2750140.509091%

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 2750 2750 79 79 2.87% 2.87%
B 2750 2750 6 6 0.22% 0.22%
C 2750 2750 61 61 2.22% 2.22%
D 2750 2750 3 3 0.11% 0.11%

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 0 50 542960 8241.9 317 310 65.8
A 8 15 7284 105.92 317 310 65.8
A 0 226 3450 47.69 317 310 65.8
B 4 81 79952 1229.68 321 313 64.8
B 15 204 53548 821.98 321 313 64.8
B 15 85 23720 361.42 321 313 64.8
C 1 192 338681 4678.24 304 306 72.3
C 7 220 2853 35.21 304 306 72.3
C 13 61 2606 31.8 304 306 72.3
D 10 172 12593 162.52 310 301 75.6
D 13 137 12465 160.83 310 301 75.6
D 7 39 11199 144.09 310 301 75.6

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
Veto Counter