ASTROSAT CZTI

Data Quality Report

Orbit 25188

Creation date: 2024-06-27T19:14:52.301189
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_027T01_9000003690_25188cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25188cztM0_level2_quad_clean.evt
Size (bytes)501,992,64074,805,120
Size478.7 MB 71.3 MB
Events in quadrant A3,114,985467,899
Events in quadrant B3,195,757473,324
Events in quadrant C3,549,641445,674
Events in quadrant D4,917,252440,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129300
B0131630
C0143080
D0187150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6266570.909671%
B6266831.324609%
C6267891.420137%
D62673515.600766%

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 7346 6267 0 0 0.00% 0.00%
B 7346 6267 3 3 0.04% 0.05%
C 7347 6268 2 2 0.03% 0.03%
D 7347 6268 294 294 4.00% 4.69%

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 10079 58.16 806 791 159.7
A 15 174 8086 45.68 806 791 159.7
A 3 137 7342 41.02 806 791 159.7
B 3 64 59035 387.62 797 779 150.3
B 12 111 18124 115.41 797 779 150.3
B 11 111 16025 101.44 797 779 150.3
C 7 247 430794 2424.83 763 770 177.3
C 14 238 125771 704.86 763 770 177.3
C 2 16 10354 54.04 763 770 177.3
D 12 235 582100 3174.75 764 740 183.1
D 1 255 451709 2462.7 764 740 183.1
D 1 52 441888 2409.07 764 740 183.1

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