ASTROSAT CZTI

Data Quality Report

Orbit 46497

Creation date: 2024-06-27T23:23:51.636887
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/AS1A13_068T05_9000006218_46497cztM0_level2.fits modeM0/AS1A13_068T05_9000006218_46497cztM0_level2_quad_clean.evt
Size (bytes)553,648,320119,465,280
Size528.0 MB 113.9 MB
Events in quadrant A7,209,987786,852
Events in quadrant B3,803,188817,623
Events in quadrant C3,324,202790,870
Events in quadrant D5,578,669702,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260520
B0164780
C0153930
D0217632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74612823.779654%
B74611341.796006%
C7462200.268025%
D74613024.047715%

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 7461 7461 147 147 1.97% 1.97%
B 7461 7461 49 49 0.66% 0.66%
C 7462 7462 1 1 0.01% 0.01%
D 7462 7462 225 225 3.02% 3.02%

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 10 83 3231417 18222.21 849 829 177.3
A 14 235 655327 3691.71 849 829 177.3
A 13 254 13298 70.33 849 829 177.3
B 8 234 226771 1331.51 845 818 169.7
B 5 172 122468 716.87 845 818 169.7
B 3 112 46828 271.13 845 818 169.7
C 12 249 18940 91.51 840 843 197.8
C 3 233 12338 58.13 840 843 197.8
C 14 254 11835 55.58 840 843 197.8
D 12 128 682430 3270.02 828 803 208.4
D 7 80 460771 2206.64 828 803 208.4
D 13 249 357897 1713.12 828 803 208.4

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