ASTROSAT CZTI

Data Quality Report

Orbit 35183

Creation date: 2022-04-01T09:40:37.266470
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/AS1C07_001T06_9000005046_35183cztM0_level2.evt modeM0/AS1C07_001T06_9000005046_35183cztM0_level2_quad_clean.evt
Size (bytes)750,479,04088,280,640
Size715.7 MB 84.2 MB
Events in quadrant A2,406,062631,042
Events in quadrant B8,970,408486,187
Events in quadrant C2,653,944649,493
Events in quadrant D8,350,730543,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107151
B0301691
C0111301
D0283981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5154160.310438%
B5154266351.668607%
C5154260.504463%
D5154159530.946837%

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 6437 5155 4 4 0.06% 0.08%
B 6437 5154 1874 1874 29.11% 36.36%
C 6437 5155 17 17 0.26% 0.33%
D 6437 5155 1453 1453 22.57% 28.19%

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 66810 556.04 583 570 119.1
A 9 143 52996 440.08 583 570 119.1
A 12 16 14174 114.2 583 570 119.1
B 5 236 6903687 78324.09 463 450 88.1
B 5 172 176430 1996.67 463 450 88.1
B 4 232 48823 548.84 463 450 88.1
C 15 214 211996 1590.87 573 579 132.9
C 0 10 76231 569.27 573 579 132.9
C 1 23 39194 290.57 573 579 132.9
D 8 195 5554542 43110.41 529 514 128.8
D 7 223 184748 1430.03 529 514 128.8
D 13 249 132411 1023.79 529 514 128.8

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