ASTROSAT CZTI

Data Quality Report

Orbit 27082

Creation date: 2024-06-27T19:36:16.725551
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/AS1T03_236T01_9000003908_27082cztM0_level2.evt modeM0/AS1T03_236T01_9000003908_27082cztM0_level2_quad_clean.evt
Size (bytes)619,346,880111,360,960
Size590.7 MB 106.2 MB
Events in quadrant A4,807,753718,370
Events in quadrant B4,412,649751,061
Events in quadrant C3,548,743760,964
Events in quadrant D5,563,330704,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185690
B0173280
C0146220
D0209570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62753475.529880%
B62753355.338645%
C62751552.470120%
D62755328.478088%

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 7595 6276 230 230 3.03% 3.66%
B 7595 6276 190 190 2.50% 3.03%
C 7595 6276 0 0 0.00% 0.00%
D 7595 6276 361 361 4.75% 5.75%

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 14 235 1460201 8638.92 855 841 168.9
A 12 189 25769 147.56 855 841 168.9
A 6 16 14663 81.82 855 841 168.9
B 0 189 821873 5129.49 865 848 160.1
B 3 112 175821 1093.17 865 848 160.1
B 12 111 18535 110.5 865 848 160.1
C 14 238 140024 691.31 870 879 201.3
C 15 208 12407 57.27 870 879 201.3
C 13 61 6015 25.52 870 879 201.3
D 1 52 2076598 10474.27 840 821 198.2
D 2 250 315984 1590.29 840 821 198.2
D 2 234 27511 134.67 840 821 198.2

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