ASTROSAT CZTI

Data Quality Report

Orbit 20052

Creation date: 2024-06-27T18:10:38.223056
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_117T01_9000002988_20052cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20052cztM0_level2_quad_clean.evt
Size (bytes)580,020,480113,616,000
Size553.2 MB 108.4 MB
Events in quadrant A4,498,646734,420
Events in quadrant B4,107,328737,790
Events in quadrant C4,102,020702,710
Events in quadrant D4,307,669702,280

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186592
B0174382
C0173232
D0184572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81092803.452954%
B81102362.909988%
C81092793.440622%
D81091982.441731%

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 8524 8111 78 78 0.92% 0.96%
B 8525 8112 5 5 0.06% 0.06%
C 8524 8111 2 2 0.02% 0.02%
D 8524 8111 68 68 0.80% 0.84%

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 14 254 305759 1444.19 1037 1014 211.0
A 14 238 191142 901.02 1037 1014 211.0
A 11 29 12283 53.4 1037 1014 211.0
B 4 80 39268 188.96 1033 1007 202.5
B 12 111 25243 119.69 1033 1007 202.5
B 11 111 22464 105.97 1033 1007 202.5
C 14 238 155981 651.43 1001 1006 237.9
C 4 254 26306 106.35 1001 1006 237.9
C 3 233 11378 43.6 1001 1006 237.9
D 15 145 283537 1136.64 1016 988 248.6
D 1 52 132277 528.15 1016 988 248.6
D 2 184 65477 259.43 1016 988 248.6

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