ASTROSAT CZTI

Data Quality Report

Orbit 19375

Creation date: 2024-06-27T18:02:06.041267
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_226T06_9000002864_19375cztM0_level2.evt modeM0/AS1A05_226T06_9000002864_19375cztM0_level2_quad_clean.evt
Size (bytes)1,846,941,120212,065,920
Size1.7 GB 202.2 MB
Events in quadrant A8,788,0461,379,656
Events in quadrant B9,227,3271,388,227
Events in quadrant C8,880,9701,329,420
Events in quadrant D27,771,3791,027,142

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385044
B0394754
C0384924
D0955487

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188061260.669999%
B188062351.249601%
C188062001.063490%
D18806611932.537488%

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 20916 18808 4 4 0.02% 0.02%
B 20916 18807 42 42 0.20% 0.22%
C 20916 18808 1 1 0.00% 0.01%
D 20916 18807 4886 4886 23.36% 25.98%

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 66706 141.32 2256 2207 456.4
A 0 226 19854 38.66 2256 2207 456.4
A 13 254 18397 35.47 2256 2207 456.4
B 7 220 87853 198.36 2244 2177 431.9
B 3 64 74762 168.05 2244 2177 431.9
B 0 230 63250 141.4 2244 2177 431.9
C 14 238 334572 657.91 2163 2178 505.2
C 3 233 34597 64.17 2163 2178 505.2
C 5 112 24607 44.39 2163 2178 505.2
D 10 66 12974047 27754.73 1922 1868 467.4
D 11 176 2458475 5256.05 1922 1868 467.4
D 1 52 2297356 4911.33 1922 1868 467.4

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