ASTROSAT CZTI

Data Quality Report

Orbit 47650

Creation date: 2024-07-20T19:45:34.086890
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_071T01_9000006340_47650cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47650cztM0_level2_quad_clean.evt
Size (bytes)455,423,040106,744,320
Size434.3 MB 101.8 MB
Events in quadrant A7,326,030698,984
Events in quadrant B2,974,054737,078
Events in quadrant C2,966,057701,851
Events in quadrant D3,103,285654,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262861
B0132001
C0134761
D0137531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62984356.906955%
B6298911.444903%
C6299901.428798%
D6299711.127163%

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 7434 6300 140 140 1.88% 2.22%
B 7434 6300 5 5 0.07% 0.08%
C 7435 6301 38 38 0.51% 0.60%
D 7435 6301 20 20 0.27% 0.32%

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 3633579 24123.98 724 709 150.6
A 9 191 552417 3663.6 724 709 150.6
A 13 248 335742 2224.78 724 709 150.6
B 0 190 33487 232.02 723 701 141.3
B 5 255 30468 210.66 723 701 141.3
B 5 172 28219 194.74 723 701 141.3
C 3 233 111705 668.89 704 707 165.9
C 14 254 77424 462.31 704 707 165.9
C 1 3 33202 195.82 704 707 165.9
D 2 249 186196 1027.09 718 693 180.6
D 8 176 33661 182.53 718 693 180.6
D 2 234 30685 166.06 718 693 180.6

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