ASTROSAT CZTI

Data Quality Report

Orbit 35264

Creation date: 2022-04-06T20:05:05.253512
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/AS1A11_047T09_9000005054_35264cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35264cztM0_level2_quad_clean.evt
Size (bytes)688,026,24088,159,680
Size656.2 MB 84.1 MB
Events in quadrant A2,674,531650,824
Events in quadrant B9,500,027447,739
Events in quadrant C3,766,344615,113
Events in quadrant D4,537,873583,650

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110953
B0319012
C0143562
D0170622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529990.169843%
B5299295555.765239%
C52992194.132855%
D52993416.435176%

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 7362 5300 0 0 0.00% 0.00%
B 7361 5299 2438 2438 33.12% 46.01%
C 7362 5300 207 207 2.81% 3.91%
D 7362 5300 300 300 4.07% 5.66%

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 101548 765.45 658 646 131.8
A 13 6 10048 71.32 658 646 131.8
A 13 254 9397 66.39 658 646 131.8
B 5 236 5089777 55384.23 482 471 91.9
B 5 172 2397508 26085.69 482 471 91.9
B 4 232 66170 714.97 482 471 91.9
C 0 10 739919 5195.01 619 624 142.3
C 15 208 301184 2112.03 619 624 142.3
C 15 214 222629 1560.02 619 624 142.3
D 7 80 970706 6419.89 621 606 151.1
D 2 249 531381 3512.54 621 606 151.1
D 8 195 193395 1275.83 621 606 151.1

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