ASTROSAT CZTI

Data Quality Report

Orbit 26826

Creation date: 2024-06-27T19:33:25.100248
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/AS1A09_145T01_9000003866_26826cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26826cztM0_level2_quad_clean.evt
Size (bytes)1,831,210,560221,604,480
Size1.7 GB 211.3 MB
Events in quadrant A11,294,2771,437,606
Events in quadrant B11,342,5011,430,864
Events in quadrant C9,019,4181,398,977
Events in quadrant D22,630,0371,241,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0447820
B0441050
C0370600
D0792540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174204812.761194%
B1742011956.859931%
C174204832.772675%
D17420456626.211251%

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 19095 17423 53 53 0.28% 0.30%
B 19095 17424 585 585 3.06% 3.36%
C 19095 17424 15 15 0.08% 0.09%
D 19095 17423 3658 3658 19.16% 21.00%

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 0 13 2408548 5277.19 2260 2217 456.0
A 8 255 116056 249.65 2260 2217 456.0
A 6 16 38385 79.32 2260 2217 456.0
B 3 64 1618920 3856.41 2191 2140 419.2
B 0 189 906292 2156.62 2191 2140 419.2
B 10 246 89646 208.72 2191 2140 419.2
C 14 238 344276 675.6 2161 2178 506.4
C 14 176 159596 310.88 2161 2178 506.4
C 15 208 75763 145.32 2161 2178 506.4
D 1 52 8322421 17614.25 1971 1924 472.4
D 7 80 6016530 12732.75 1971 1924 472.4
D 2 250 605298 1277.33 1971 1924 472.4

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