ASTROSAT CZTI

Data Quality Report

Orbit 45820

Creation date: 2024-06-27T23:16:31.711962
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_185T01_9000006128_45820cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45820cztM0_level2_quad_clean.evt
Size (bytes)564,321,60097,709,760
Size538.2 MB 93.2 MB
Events in quadrant A5,588,591673,904
Events in quadrant B4,351,081690,847
Events in quadrant C2,851,040683,279
Events in quadrant D7,625,728484,919

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206601
B0170111
C0127341
D0267731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60992243.672733%
B60993345.476308%
C6099420.688637%
D6099153725.200853%

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 7219 6100 123 123 1.70% 2.02%
B 7219 6100 163 163 2.26% 2.67%
C 7219 6100 6 6 0.08% 0.10%
D 7219 6100 1317 1317 18.24% 21.59%

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 2579128 18319.02 679 666 140.8
A 15 14 189430 1341.1 679 666 140.8
A 13 248 168633 1193.34 679 666 140.8
B 3 112 1068437 8067.6 679 659 132.4
B 0 171 275035 2073.05 679 659 132.4
B 4 171 129133 970.69 679 659 132.4
C 2 14 143408 881.24 690 694 161.9
C 3 233 13696 80.29 690 694 161.9
C 13 61 4742 25.0 690 694 161.9
D 13 249 1733479 11050.0 613 593 156.8
D 11 241 1615614 10298.42 613 593 156.8
D 12 2 1448793 9234.66 613 593 156.8

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