ASTROSAT CZTI

Data Quality Report

Orbit 18252

Creation date: 2024-06-27T17:47:24.623428
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/AS1A05_019T01_9000002718_18252cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18252cztM0_level2_quad_clean.evt
Size (bytes)461,093,76081,616,320
Size439.7 MB 77.8 MB
Events in quadrant A3,587,381525,195
Events in quadrant B3,450,897534,202
Events in quadrant C3,274,277493,656
Events in quadrant D3,237,123491,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146382
B0139922
C0133972
D0133382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6108681.113294%
B6108631.031434%
C6108731.195154%
D6108270.442043%

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 7513 6109 8 8 0.11% 0.13%
B 7513 6109 6 6 0.08% 0.10%
C 7513 6109 0 0 0.00% 0.00%
D 7513 6109 5 5 0.07% 0.08%

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 289544 1697.3 853 836 170.1
A 4 2 20025 112.81 853 836 170.1
A 0 226 7611 39.83 853 836 170.1
B 7 220 108563 680.91 850 834 158.2
B 12 111 17804 107.26 850 834 158.2
B 11 111 15354 91.78 850 834 158.2
C 14 238 128645 695.56 796 803 183.8
C 3 233 42607 227.45 796 803 183.8
C 13 61 5741 26.87 796 803 183.8
D 7 238 61225 312.01 811 789 193.7
D 1 52 50807 258.23 811 789 193.7
D 13 168 28543 143.29 811 789 193.7

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