ASTROSAT CZTI

Data Quality Report

Orbit 32742

Creation date: 2024-06-27T20:41:29.472332
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/AS1A10_057T04_9000004728_32742cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32742cztM0_level2_quad_clean.evt
Size (bytes)1,349,069,760176,552,640
Size1.3 GB 168.4 MB
Events in quadrant A8,189,3871,156,936
Events in quadrant B14,574,9061,003,868
Events in quadrant C6,449,2691,191,184
Events in quadrant D10,772,2151,100,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325634
B0519313
C0276373
D0409147

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129295274.076108%
B12929355927.527264%
C12929830.641968%
D129287165.538366%

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 18696 12932 475 475 2.54% 3.67%
B 18696 12931 2818 2818 15.07% 21.79%
C 18696 12932 47 47 0.25% 0.36%
D 18696 12932 567 567 3.03% 4.38%

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 15 249 2063576 6909.65 1533 1511 298.4
A 0 254 89874 296.09 1533 1511 298.4
A 15 237 64745 211.89 1533 1511 298.4
B 12 1 7503227 30833.59 1317 1291 243.3
B 15 36 704036 2888.34 1317 1291 243.3
B 5 172 361020 1478.52 1317 1291 243.3
C 0 10 191840 558.21 1496 1511 341.0
C 8 229 168195 488.86 1496 1511 341.0
C 8 79 86686 249.81 1496 1511 341.0
D 8 195 1296517 3770.3 1456 1427 343.5
D 2 250 736458 2139.84 1456 1427 343.5
D 2 249 731622 2125.76 1456 1427 343.5

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