ASTROSAT CZTI

Data Quality Report

Orbit 42827

Creation date: 2024-06-27T22:44:44.183540
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_138T01_9000005828_42827cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42827cztM0_level2_quad_clean.evt
Size (bytes)343,846,08095,423,040
Size327.9 MB 91.0 MB
Events in quadrant A3,460,374618,855
Events in quadrant B2,763,910646,095
Events in quadrant C2,889,418641,496
Events in quadrant D3,156,392571,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137402
B0124052
C0122343
D0135502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5878550.935692%
B5878420.714529%
C5877150.255232%
D58771242.109920%

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 7223 5880 34 34 0.47% 0.58%
B 7223 5880 33 33 0.46% 0.56%
C 7222 5879 12 12 0.17% 0.20%
D 7222 5879 113 113 1.56% 1.92%

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 632624 4736.47 636 621 133.4
A 12 189 115859 863.63 636 621 133.4
A 13 248 110883 826.34 636 621 133.4
B 5 255 174915 1397.66 636 616 124.7
B 0 190 60360 479.07 636 616 124.7
B 0 245 16460 127.05 636 616 124.7
C 15 214 240834 1607.6 631 634 149.4
C 14 254 159285 1061.81 631 634 149.4
C 3 233 20685 134.2 631 634 149.4
D 1 47 169024 1122.24 620 604 150.1
D 13 249 164120 1089.56 620 604 150.1
D 12 233 119744 793.87 620 604 150.1

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