ASTROSAT CZTI

Data Quality Report

Orbit 19763

Creation date: 2024-06-27T18:06:43.848631
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/AS1A05_088T05_9000002952_19763cztM0_level2.evt modeM0/AS1A05_088T05_9000002952_19763cztM0_level2_quad_clean.evt
Size (bytes)658,923,84083,963,520
Size628.4 MB 80.1 MB
Events in quadrant A4,114,357507,037
Events in quadrant B3,983,782516,197
Events in quadrant C7,056,207473,870
Events in quadrant D4,254,277484,125

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175873
B0169872
C0265072
D0181472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80754185.176471%
B80754225.226006%
C807595811.863777%
D80753624.482972%

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 8410 8077 31 31 0.37% 0.38%
B 8410 8077 1 1 0.01% 0.01%
C 8410 8076 200 200 2.38% 2.48%
D 8410 8079 64 64 0.76% 0.79%

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 4 2 248380 1199.56 1002 977 206.2
A 0 226 8768 37.78 1002 977 206.2
A 3 137 8626 37.09 1002 977 206.2
B 0 198 41345 205.48 999 971 196.5
B 12 111 24589 120.2 999 971 196.5
B 11 111 21434 104.15 999 971 196.5
C 3 233 3274107 14845.51 930 933 220.5
C 14 238 140985 635.21 930 933 220.5
C 7 220 10244 42.23 930 933 220.5
D 1 52 337335 1418.33 971 940 237.2
D 7 238 172436 723.07 971 940 237.2
D 2 234 32814 134.39 971 940 237.2

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