ASTROSAT CZTI

Data Quality Report

Orbit 24721

Creation date: 2024-06-27T19:09:08.367851
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_194T01_9000003620_24721cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24721cztM0_level2_quad_clean.evt
Size (bytes)489,767,04066,614,400
Size467.1 MB 63.5 MB
Events in quadrant A3,343,860407,113
Events in quadrant B3,784,451408,121
Events in quadrant C3,831,160384,415
Events in quadrant D3,450,409382,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136702
B0151843
C0156532
D0140392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6228580.931278%
B62271422.280392%
C62271061.702264%
D6227440.706600%

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 7473 6228 0 0 0.00% 0.00%
B 7472 6227 60 60 0.80% 0.96%
C 7472 6227 7 7 0.09% 0.11%
D 7472 6227 16 16 0.21% 0.26%

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 13 254 8806 46.65 867 854 170.4
A 0 226 7540 39.23 867 854 170.4
A 3 137 7337 38.04 867 854 170.4
B 4 200 379402 2343.56 855 837 161.5
B 0 189 29731 178.87 855 837 161.5
B 12 111 19553 115.86 855 837 161.5
C 7 247 313008 1683.3 809 817 185.5
C 14 238 131221 703.12 809 817 185.5
C 2 16 107362 574.48 809 817 185.5
D 1 52 150461 757.39 826 805 197.6
D 8 195 106284 533.82 826 805 197.6
D 13 138 26383 129.45 826 805 197.6

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