ASTROSAT CZTI

Data Quality Report

Orbit 34910

Creation date: 2022-03-13T23:39:01.911935
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_065T21_9000005000_34910cztM0_level2.evt modeM0/AS1A11_065T21_9000005000_34910cztM0_level2_quad_clean.evt
Size (bytes)438,436,80089,876,160
Size418.1 MB 85.7 MB
Events in quadrant A2,577,075599,957
Events in quadrant B3,051,334597,716
Events in quadrant C2,840,947593,286
Events in quadrant D4,445,342556,051

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113463
B0125532
C0116662
D0169572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5347110.205723%
B53471733.235459%
C5347781.458762%
D53471382.580886%

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 7050 5348 0 0 0.00% 0.00%
B 7049 5347 103 103 1.46% 1.93%
C 7050 5348 59 59 0.84% 1.10%
D 7050 5348 124 124 1.76% 2.32%

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 61555 476.98 634 623 127.7
A 15 169 39919 307.61 634 623 127.7
A 13 6 13937 104.22 634 623 127.7
B 5 172 507181 4282.2 620 603 118.3
B 0 190 54848 458.54 620 603 118.3
B 5 255 17478 142.65 620 603 118.3
C 15 214 225040 1567.1 617 622 143.2
C 0 10 194422 1353.3 617 622 143.2
C 12 250 10669 70.16 617 622 143.2
D 8 195 956061 6287.29 616 599 152.0
D 13 249 341419 2242.72 616 599 152.0
D 8 230 248489 1631.21 616 599 152.0

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