ASTROSAT CZTI

Data Quality Report

Orbit 39937

Creation date: 2024-06-27T22:10:19.182221
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/AS1A12_032T02_9000005510_39937cztM0_level2.fits modeM0/AS1A12_032T02_9000005510_39937cztM0_level2_quad_clean.evt
Size (bytes)228,427,20065,756,160
Size217.8 MB 62.7 MB
Events in quadrant A1,998,033440,069
Events in quadrant B2,016,732446,279
Events in quadrant C2,097,409433,399
Events in quadrant D2,035,926393,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084511
B087761
C086371
D089581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A393350.127129%
B3933942.390033%
C3933100.254259%
D3933390.991609%

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 3933 3933 3 3 0.08% 0.08%
B 3933 3933 73 73 1.86% 1.86%
C 3933 3933 6 6 0.15% 0.15%
D 3933 3933 38 38 0.97% 0.97%

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 288236 3276.28 424 416 87.8
A 13 248 29002 325.4 424 416 87.8
A 7 192 14477 160.06 424 416 87.8
B 4 170 163110 1977.81 420 408 82.3
B 5 255 90440 1094.43 420 408 82.3
B 0 183 51584 622.1 420 408 82.3
C 9 54 277722 2775.55 421 424 99.9
C 15 214 158854 1585.77 421 424 99.9
C 0 10 11015 106.01 421 424 99.9
D 2 249 120363 1162.55 416 404 103.2
D 12 227 91925 886.95 416 404 103.2
D 1 47 63762 614.02 416 404 103.2

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