ASTROSAT CZTI

Data Quality Report

Orbit 35317

Creation date: 2022-04-10T09:03:52.447436
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/AS1T05_023T01_9000005058_35317cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35317cztM0_level2_quad_clean.evt
Size (bytes)525,588,48072,239,040
Size501.2 MB 68.9 MB
Events in quadrant A2,629,149468,616
Events in quadrant B5,000,512437,228
Events in quadrant C3,048,937466,539
Events in quadrant D4,873,876437,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112363
B0184412
C0123662
D0182402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5387180.334138%
B538774213.773900%
C5387801.485057%
D53873205.940226%

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 7179 5388 13 13 0.18% 0.24%
B 7179 5388 600 600 8.36% 11.14%
C 7179 5388 63 63 0.88% 1.17%
D 7178 5387 340 340 4.74% 6.31%

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 94741 748.32 623 612 125.8
A 15 169 66927 527.2 623 612 125.8
A 8 192 30437 237.11 623 612 125.8
B 5 236 1376343 12155.84 587 570 113.2
B 5 172 1266252 11183.12 587 570 113.2
B 0 190 25902 223.82 587 570 113.2
C 0 10 340353 2437.14 602 609 139.4
C 15 214 220747 1579.15 602 609 139.4
C 15 159 80077 570.06 602 609 139.4
D 2 249 1049488 7261.56 589 573 144.4
D 7 80 667166 4614.78 589 573 144.4
D 8 195 390984 2702.79 589 573 144.4

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