ASTROSAT CZTI

Data Quality Report

Orbit 21275

Creation date: 2024-06-27T18:25:43.278774
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_037T01_9000003140_21275cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21275cztM0_level2_quad_clean.evt
Size (bytes)590,123,52091,284,480
Size562.8 MB 87.1 MB
Events in quadrant A3,514,127605,902
Events in quadrant B3,558,614613,784
Events in quadrant C3,581,711590,008
Events in quadrant D6,771,394495,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146712
B0147172
C0148362
D0244712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65771291.961381%
B65781412.143509%
C65781792.721192%
D6578130919.899666%

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 8772 6577 5 5 0.06% 0.08%
B 8773 6578 9 9 0.10% 0.14%
C 8773 6578 3 3 0.03% 0.05%
D 8773 6578 1144 1144 13.04% 17.39%

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 15 236 68453 378.06 893 878 178.7
A 13 254 10208 52.2 893 878 178.7
A 0 226 7843 38.97 893 878 178.7
B 3 64 52352 308.27 879 859 167.0
B 12 111 19810 113.45 879 859 167.0
B 11 111 17183 97.73 879 859 167.0
C 14 238 133448 681.41 841 849 194.6
C 0 207 122540 625.35 841 849 194.6
C 3 233 42015 211.55 841 849 194.6
D 13 174 3270092 17043.03 795 771 191.8
D 1 52 267831 1392.19 795 771 191.8
D 13 104 49002 251.43 795 771 191.8

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