ASTROSAT CZTI

Data Quality Report

Orbit 07488

Creation date: 2024-06-27T15:20:27.239867
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/AS1T01_156T01_9000001034_07488cztM0_level2.evt modeM0/AS1T01_156T01_9000001034_07488cztM0_level2_quad_clean.evt
Size (bytes)283,230,72042,615,360
Size270.1 MB 40.6 MB
Events in quadrant A1,906,998255,530
Events in quadrant B2,309,646258,590
Events in quadrant C1,889,108258,270
Events in quadrant D2,207,859244,571

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080612
B093341
C080291
D091431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3862150.388400%
B3862842.175039%
C3862140.362506%
D3862812.097359%

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 4207 3863 0 0 0.00% 0.00%
B 4207 3863 30 30 0.71% 0.78%
C 4207 3863 0 0 0.00% 0.00%
D 4207 3863 37 37 0.88% 0.96%

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 3 1 16442 157.52 487 475 101.4
A 15 239 5471 49.29 487 475 101.4
A 0 226 4646 41.15 487 475 101.4
B 0 214 140949 1445.87 491 480 97.2
B 0 219 134156 1375.95 491 480 97.2
B 4 81 38897 395.43 491 480 97.2
C 1 16 29839 264.09 473 475 111.2
C 8 128 4423 35.5 473 475 111.2
C 13 61 3684 28.86 473 475 111.2
D 2 152 117417 992.93 470 455 117.8
D 2 136 77788 656.51 470 455 117.8
D 14 34 73024 616.06 470 455 117.8

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