ASTROSAT CZTI

Data Quality Report

Orbit 35192

Creation date: 2022-04-01T23:27:42.470510
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_020T01_9000005050_35192cztM0_level2.evt modeM0/AS1T05_020T01_9000005050_35192cztM0_level2_quad_clean.evt
Size (bytes)678,919,68063,083,520
Size647.5 MB 60.2 MB
Events in quadrant A2,602,351412,621
Events in quadrant B7,332,528364,021
Events in quadrant C3,301,725401,776
Events in quadrant D6,978,793371,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108713
B0253282
C0128952
D0243162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5129200.389940%
B5129182935.659973%
C51291833.567947%
D512979315.461104%

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 7102 5130 7 7 0.10% 0.14%
B 7102 5130 1243 1243 17.50% 24.23%
C 7102 5130 143 143 2.01% 2.79%
D 7102 5130 985 985 13.87% 19.20%

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 100341 789.87 623 612 126.3
A 10 255 60035 470.64 623 612 126.3
A 9 143 22582 174.01 623 612 126.3
B 5 236 5079196 49547.43 535 523 102.5
B 5 172 52096 503.15 535 523 102.5
B 4 232 31217 299.45 535 523 102.5
C 0 10 386418 2804.11 591 597 137.6
C 1 23 299350 2171.31 591 597 137.6
C 15 214 212130 1537.4 591 597 137.6
D 8 195 4014040 27953.86 583 567 143.6
D 12 233 242126 1682.46 583 567 143.6
D 10 118 153852 1067.63 583 567 143.6

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