ASTROSAT CZTI

Data Quality Report

Orbit 37432

Creation date: 2024-06-27T21:39:54.827837
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/AS1A09_002T01_9000005322_37432cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37432cztM0_level2_quad_clean.evt
Size (bytes)417,009,60062,642,880
Size397.7 MB 59.7 MB
Events in quadrant A2,622,542390,635
Events in quadrant B3,444,181398,337
Events in quadrant C2,800,566391,289
Events in quadrant D3,420,864364,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107843
B0133732
C0111672
D0135362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5012170.339186%
B50123296.564246%
C5012721.436552%
D50122074.130088%

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 6955 5013 6 6 0.09% 0.12%
B 6955 5013 232 232 3.34% 4.63%
C 6955 5013 71 71 1.02% 1.42%
D 6955 5013 191 191 2.75% 3.81%

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 272606 2281.14 596 585 119.2
A 12 189 15696 126.72 596 585 119.2
A 13 6 10445 82.69 596 585 119.2
B 5 172 605329 5589.41 580 568 108.2
B 0 189 319891 2951.29 580 568 108.2
B 4 171 108563 998.13 580 568 108.2
C 0 10 225094 1698.77 579 584 132.2
C 15 214 214674 1619.93 579 584 132.2
C 14 254 95305 716.71 579 584 132.2
D 10 253 485575 3536.04 572 556 137.2
D 12 227 173382 1259.99 572 556 137.2
D 12 235 141036 1024.17 572 556 137.2

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