ASTROSAT CZTI

Data Quality Report

Orbit 12641

Creation date: 2024-06-27T16:30:24.251994
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/AS1G08_071T01_9000001874_12641cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12641cztM0_level2_quad_clean.evt
Size (bytes)879,998,400162,887,040
Size839.2 MB 155.3 MB
Events in quadrant A5,731,1181,008,719
Events in quadrant B7,097,8361,029,371
Events in quadrant C6,777,9441,034,098
Events in quadrant D6,185,584984,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260043
B0294602
C0291852
D0274052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126712121.673112%
B126713732.943730%
C126714173.290979%
D126712041.609976%

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 13057 12672 0 0 0.00% 0.00%
B 13057 12673 77 77 0.59% 0.61%
C 13057 12674 290 290 2.22% 2.29%
D 13057 12674 75 75 0.57% 0.59%

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 8 15 33955 107.94 1477 1442 301.2
A 0 226 13154 38.88 1477 1442 301.2
A 12 194 11137 32.19 1477 1442 301.2
B 4 239 844048 2984.45 1476 1440 282.3
B 11 51 294968 1039.65 1476 1440 282.3
B 3 64 94437 329.39 1476 1440 282.3
C 15 208 1190337 3599.98 1427 1433 330.3
C 8 128 14214 38.7 1427 1433 330.3
C 13 61 10368 27.06 1427 1433 330.3
D 10 157 251948 727.66 1429 1385 344.3
D 10 199 199199 574.47 1429 1385 344.3
D 13 249 188410 543.14 1429 1385 344.3

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