ASTROSAT CZTI

Data Quality Report

Orbit 18272

Creation date: 2024-06-27T17:47:42.221777
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/AS1A06_006T01_9000002720_18272cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18272cztM0_level2_quad_clean.evt
Size (bytes)638,844,480103,746,240
Size609.2 MB 98.9 MB
Events in quadrant A3,608,092676,920
Events in quadrant B3,988,436671,815
Events in quadrant C3,587,388654,478
Events in quadrant D7,650,942611,380

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157431
B0167401
C0156401
D0281021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7573490.647036%
B75731451.914697%
C7574801.056245%
D75745256.931608%

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 7853 7574 1 1 0.01% 0.01%
B 7853 7574 27 27 0.34% 0.36%
C 7854 7575 0 0 0.00% 0.00%
D 7854 7575 437 437 5.56% 5.77%

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 15 174 58897 309.15 923 903 187.6
A 0 226 8092 38.32 923 903 187.6
A 12 194 6996 32.48 923 903 187.6
B 0 190 234424 1313.24 915 894 177.8
B 6 36 75297 418.4 915 894 177.8
B 0 198 20181 108.46 915 894 177.8
C 14 238 132426 636.19 872 874 206.8
C 3 233 44031 208.71 872 874 206.8
C 0 207 11661 52.17 872 874 206.8
D 7 238 2300288 10608.23 873 844 216.8
D 13 168 1296083 5975.44 873 844 216.8
D 8 195 382137 1759.05 873 844 216.8

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