ASTROSAT CZTI

Data Quality Report

Orbit 16556

Creation date: 2024-06-27T17:24:20.810341
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/AS1T03_018T01_9000002442_16556cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16556cztM0_level2_quad_clean.evt
Size (bytes)544,703,04085,314,240
Size519.5 MB 81.4 MB
Events in quadrant A4,044,339538,857
Events in quadrant B3,751,071568,119
Events in quadrant C3,685,397550,922
Events in quadrant D4,589,295486,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161633
B0152722
C0151802
D0179652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62774096.515852%
B62771422.262227%
C62771402.230365%
D627885713.650844%

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 7453 6279 349 349 4.68% 5.56%
B 7453 6279 52 52 0.70% 0.83%
C 7453 6279 37 37 0.50% 0.59%
D 7454 6280 212 212 2.84% 3.38%

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 15 174 1035220 6648.69 770 756 155.6
A 15 223 32523 204.17 770 756 155.6
A 15 239 9585 56.75 770 756 155.6
B 7 220 228739 1513.61 785 768 150.6
B 10 16 132579 875.16 785 768 150.6
B 15 35 104750 690.39 785 768 150.6
C 3 233 626115 3576.37 749 755 174.9
C 14 238 115340 655.3 749 755 174.9
C 7 247 16077 87.62 749 755 174.9
D 1 52 1254312 7209.0 705 684 173.9
D 5 222 305876 1755.01 705 684 173.9
D 7 38 249250 1429.38 705 684 173.9

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