ASTROSAT CZTI

Data Quality Report

Orbit 45266

Creation date: 2024-06-27T23:11:43.356173
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_024T03_9000006064_45266cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45266cztM0_level2_quad_clean.evt
Size (bytes)485,712,00098,233,920
Size463.2 MB 93.7 MB
Events in quadrant A5,329,936664,164
Events in quadrant B3,425,105685,836
Events in quadrant C2,816,828670,498
Events in quadrant D5,919,690515,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206181
B0144331
C0128891
D0218591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62782203.504301%
B62791872.978181%
C6279360.573340%
D6279106116.897595%

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 7178 6278 53 53 0.74% 0.84%
B 7179 6279 97 97 1.35% 1.54%
C 7179 6279 3 3 0.04% 0.05%
D 7179 6279 866 866 12.06% 13.79%

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 10 83 2367948 16022.57 704 688 147.7
A 13 248 197171 1329.88 704 688 147.7
A 0 243 19339 126.24 704 688 147.7
B 4 171 464955 3334.07 704 683 139.3
B 5 255 49238 348.69 704 683 139.3
B 5 172 32928 231.56 704 683 139.3
C 14 254 40338 237.91 702 705 166.6
C 2 14 16791 96.56 702 705 166.6
C 3 233 16443 94.47 702 705 166.6
D 13 249 1814047 11377.38 626 607 159.4
D 2 249 484760 3037.54 626 607 159.4
D 11 241 480581 3011.32 626 607 159.4

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