ASTROSAT CZTI

Data Quality Report

Orbit 23408

Creation date: 2024-06-27T18:53:58.995589
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/AS1A07_127T02_9000003460_23408cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23408cztM0_level2_quad_clean.evt
Size (bytes)463,875,84095,832,000
Size442.4 MB 91.4 MB
Events in quadrant A3,306,019625,566
Events in quadrant B3,469,786627,413
Events in quadrant C3,365,664591,842
Events in quadrant D3,449,397587,952

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140092
B0144602
C0141452
D0145812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6731831.233101%
B6731971.441093%
C67311161.723369%
D6731731.084534%

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 7601 6731 0 0 0.00% 0.00%
B 7601 6731 3 3 0.04% 0.04%
C 7601 6731 5 5 0.07% 0.07%
D 7601 6731 19 19 0.25% 0.28%

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 13 254 11032 59.25 857 841 172.0
A 3 137 7384 38.04 857 841 172.0
A 0 226 7368 37.95 857 841 172.0
B 0 189 70490 426.95 846 826 163.2
B 0 183 40045 240.36 846 826 163.2
B 0 190 29650 176.65 846 826 163.2
C 14 238 128609 668.14 810 817 191.3
C 10 9 44422 227.98 810 817 191.3
C 0 10 28417 144.3 810 817 191.3
D 1 52 259362 1283.05 831 809 201.5
D 2 234 28500 137.41 831 809 201.5
D 2 249 10867 49.91 831 809 201.5

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