ASTROSAT CZTI

Data Quality Report

Orbit 18262

Creation date: 2024-06-27T17:47:33.068366
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_18262cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18262cztM0_level2_quad_clean.evt
Size (bytes)489,784,32081,120,960
Size467.1 MB 77.4 MB
Events in quadrant A3,427,087505,353
Events in quadrant B3,443,244511,911
Events in quadrant C3,320,444484,682
Events in quadrant D4,169,123468,954

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145582
B0146922
C0142742
D0172782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6968290.416188%
B6968520.746269%
C6967701.004737%
D69671582.267834%

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 8913 6970 2 2 0.02% 0.03%
B 8913 6970 3 3 0.03% 0.04%
C 8912 6969 0 0 0.00% 0.00%
D 8912 6969 99 99 1.11% 1.42%

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 4 2 144044 824.38 851 832 173.7
A 0 226 7415 37.89 851 832 173.7
A 11 29 6357 31.8 851 832 173.7
B 7 220 79204 477.81 854 833 164.0
B 12 111 19288 112.52 854 833 164.0
B 11 111 16879 97.83 854 833 164.0
C 14 238 127226 657.59 818 822 192.2
C 13 61 5696 25.36 818 822 192.2
C 3 233 4004 16.55 818 822 192.2
D 1 52 786179 3957.53 817 793 198.5
D 7 238 181211 909.12 817 793 198.5
D 2 152 61327 305.03 817 793 198.5

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