ASTROSAT CZTI

Data Quality Report

Orbit 28027

Creation date: 2024-06-27T19:47:14.811835
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/AS1A10_048T02_9000004050_28027cztM0_level2.evt modeM0/AS1A10_048T02_9000004050_28027cztM0_level2_quad_clean.evt
Size (bytes)385,081,92059,659,200
Size367.2 MB 56.9 MB
Events in quadrant A2,338,047385,403
Events in quadrant B2,394,069384,528
Events in quadrant C2,917,326357,459
Events in quadrant D3,695,428351,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097940
B099410
C0117140
D0141480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46691012.163204%
B46691242.655815%
C46691843.940887%
D46691382.955665%

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 5034 4669 0 0 0.00% 0.00%
B 5034 4669 1 1 0.02% 0.02%
C 5034 4669 36 36 0.72% 0.77%
D 5034 4670 96 96 1.91% 2.06%

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 13 254 7923 59.53 603 590 123.2
A 3 137 6275 46.15 603 590 123.2
A 0 13 5971 43.68 603 590 123.2
B 3 209 19461 161.34 599 583 117.0
B 12 111 14785 121.38 599 583 117.0
B 11 111 13312 108.79 599 583 117.0
C 3 233 565806 4197.45 575 578 134.7
C 14 238 91759 677.12 575 578 134.7
C 2 16 19027 137.0 575 578 134.7
D 8 195 1216152 8739.35 579 564 139.1
D 1 52 254329 1824.42 579 564 139.1
D 2 234 17697 123.18 579 564 139.1

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