ASTROSAT CZTI

Data Quality Report

Orbit 33495

Creation date: 2024-06-27T20:49:27.871530
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_060T01_9000004804_33495cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33495cztM0_level2_quad_clean.evt
Size (bytes)534,729,60069,923,520
Size510.0 MB 66.7 MB
Events in quadrant A2,564,260453,820
Events in quadrant B5,512,966432,319
Events in quadrant C3,361,038446,420
Events in quadrant D4,405,599421,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105203
B0198752
C0132842
D0165222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517960.115852%
B517980515.543541%
C5179891.718478%
D51791452.799768%

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 7213 5180 0 0 0.00% 0.00%
B 7213 5179 670 670 9.29% 12.94%
C 7213 5180 80 80 1.11% 1.54%
D 7213 5180 142 142 1.97% 2.74%

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 13 254 8269 57.51 662 649 132.5
A 3 137 6103 41.17 662 649 132.5
A 10 83 5474 36.42 662 649 132.5
B 5 255 2233316 18834.96 630 615 118.5
B 5 172 772430 6511.0 630 615 118.5
B 4 251 18746 152.95 630 615 118.5
C 15 214 222486 1462.49 656 665 151.7
C 1 23 210878 1385.96 656 665 151.7
C 0 10 171514 1126.43 656 665 151.7
D 8 195 1172246 7454.5 643 626 157.2
D 13 249 277056 1758.8 643 626 157.2
D 2 249 213130 1352.07 643 626 157.2

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