ASTROSAT CZTI

Data Quality Report

Orbit 47479

Creation date: 2024-07-09T10:16:27.471638
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/AS1A13_089T01_9000006330_47479cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47479cztM0_level2_quad_clean.evt
Size (bytes)926,936,640195,304,320
Size884.0 MB 186.3 MB
Events in quadrant A12,235,6531,277,324
Events in quadrant B6,756,9241,327,028
Events in quadrant C7,082,1631,274,546
Events in quadrant D7,283,7261,181,028

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0444661
B0284831
C0296291
D0303711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123444123.337654%
B123453432.778453%
C123451521.231268%
D12345960.777643%

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 12934 12346 30 30 0.23% 0.24%
B 12935 12347 124 124 0.96% 1.00%
C 12935 12347 44 44 0.34% 0.36%
D 12935 12347 42 42 0.32% 0.34%

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 6604320 22761.59 1390 1354 290.1
A 9 191 251210 861.3 1390 1354 290.1
A 3 137 16963 53.81 1390 1354 290.1
B 5 32 971552 3518.57 1396 1351 275.7
B 0 198 131093 470.53 1396 1351 275.7
B 5 171 49760 175.56 1396 1351 275.7
C 3 233 1674509 5139.79 1373 1380 325.5
C 12 250 18510 52.62 1373 1380 325.5
C 0 207 18321 52.04 1373 1380 325.5
D 11 192 1461209 4200.83 1369 1324 347.5
D 2 249 227532 650.91 1369 1324 347.5
D 2 165 113205 321.94 1369 1324 347.5

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