ASTROSAT CZTI

Data Quality Report

Orbit 05902

Creation date: 2024-06-27T15:00:37.498803
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/AS1A02_114T01_9000000764_05902cztM0_level2.evt modeM0/AS1A02_114T01_9000000764_05902cztM0_level2_quad_clean.evt
Size (bytes)565,931,52097,277,760
Size539.7 MB 92.8 MB
Events in quadrant A4,469,595588,654
Events in quadrant B4,156,219588,275
Events in quadrant C3,866,153576,995
Events in quadrant D4,029,306560,634

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201481
B0189011
C0183931
D0190411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90981681.846560%
B9098510.560563%
C9098300.329743%
D9098550.604528%

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 9853 9099 91 91 0.92% 1.00%
B 9853 9099 5 5 0.05% 0.05%
C 9853 9099 2 2 0.02% 0.02%
D 9853 9099 38 38 0.39% 0.42%

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 15 236 614727 2975.78 998 975 206.2
A 0 226 9590 41.77 998 975 206.2
A 12 194 9476 41.22 998 975 206.2
B 15 204 117629 592.02 1020 992 197.0
B 10 252 34420 169.67 1020 992 197.0
B 0 219 21885 106.05 1020 992 197.0
C 14 67 15330 62.67 985 988 228.8
C 13 61 7704 29.35 985 988 228.8
C 12 4 6788 25.35 985 988 228.8
D 2 152 124833 515.37 977 947 240.4
D 12 233 113762 469.31 977 947 240.4
D 2 14 27399 110.04 977 947 240.4

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