ASTROSAT CZTI

Data Quality Report

Orbit 10455

Creation date: 2024-06-27T15:59:27.694217
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/AS1A03_126T01_9000001512_10455cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10455cztM0_level2_quad_clean.evt
Size (bytes)448,159,68067,040,640
Size427.4 MB 63.9 MB
Events in quadrant A3,484,611315,069
Events in quadrant B3,117,158406,027
Events in quadrant C2,852,652420,996
Events in quadrant D3,708,337467,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302165
B0302158
C0302165
D0288148

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04918435829
B03600722957
C03042017464
D03171316172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063
B063
C063
D063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43961102.502275%
B5930921.551433%
C6347260.409642%
D7270500.687758%

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 7909 5616 5 5 0.06% 0.09%
B 7909 6943 7 7 0.09% 0.10%
C 7909 7342 0 0 0.00% 0.00%
D 7909 7513 4 4 0.05% 0.05%

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 13 251 1393326 12988.35 516 504 107.2
A 3 80 68456 633.67 516 504 107.2
A 1 162 15647 141.21 516 504 107.2
B 4 239 210703 1576.61 693 676 133.2
B 10 245 69303 515.16 693 676 133.2
B 0 214 44487 328.88 693 676 133.2
C 14 234 12192 67.35 726 729 170.2
C 13 61 5382 27.34 726 729 170.2
C 8 128 4101 19.81 726 729 170.2
D 8 195 322675 1615.04 829 805 199.3
D 5 222 68934 341.85 829 805 199.3
D 1 20 67106 332.68 829 805 199.3

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