ASTROSAT CZTI

Data Quality Report

Orbit 43571

Creation date: 2024-06-27T22:53:18.423390
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/AS1A05_174T01_9000005880_43571cztM0_level2.fits modeM0/AS1A05_174T01_9000005880_43571cztM0_level2_quad_clean.evt
Size (bytes)1,130,103,36083,759,040
Size1.1 GB 79.9 MB
Events in quadrant A7,153,199716,795
Events in quadrant B6,087,352743,346
Events in quadrant C16,135,217432,130
Events in quadrant D11,938,380169,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141
B0140
C0151
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026501426
B023198294
C0535661020
D040868763

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01402
B01404
C01415
D01404

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A670780912.062025%
B67176429.557838%
C6693595688.988495%
D6697668999.880544%

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 7770 6715 509 509 6.55% 7.58%
B 7770 6732 377 377 4.85% 5.60%
C 7768 6695 5475 5475 70.48% 81.78%
D 7768 6697 2362 2362 30.41% 35.27%

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 99 1372015 8862.21 751 734 154.7
A 15 222 757104 4888.21 751 734 154.7
A 10 83 752234 4856.74 751 734 154.7
B 4 206 2413946 16264.48 755 734 148.4
B 0 200 275715 1853.31 755 734 148.4
B 3 25 222639 1495.59 755 734 148.4
C 15 142 6801533 63277.63 454 457 107.5
C 15 174 4142673 38539.43 454 457 107.5
C 15 158 1891267 17592.21 454 457 107.5
D 4 212 4146240 64029.25 216 206 64.8
D 4 216 2369536 36590.73 216 206 64.8
D 8 48 985434 15215.36 216 206 64.8

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