ASTROSAT CZTI

Data Quality Report

Orbit 04052

Creation date: 2024-06-27T14:36:47.837264
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/AS1G05_241T04_9000000518_04052cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04052cztM0_level2_quad_clean.evt
Size (bytes)427,973,76058,962,240
Size408.1 MB 56.2 MB
Events in quadrant A3,379,529344,370
Events in quadrant B3,201,101347,125
Events in quadrant C2,993,174338,235
Events in quadrant D2,970,030326,697

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140003
B0133842
C0128092
D0130152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61421782.898079%
B6142580.944318%
C6142280.455878%
D6142210.341908%

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 7462 6143 114 114 1.53% 1.86%
B 7462 6143 3 3 0.04% 0.05%
C 7462 6143 5 5 0.07% 0.08%
D 7462 6143 7 7 0.09% 0.11%

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 0 50 399246 2593.38 762 749 153.7
A 8 15 23858 150.39 762 749 153.7
A 0 118 12484 76.37 762 749 153.7
B 15 204 96755 647.45 782 768 148.3
B 14 167 28142 184.64 782 768 148.3
B 0 183 16231 104.3 782 768 148.3
C 9 144 36671 208.92 746 751 171.9
C 1 16 18697 104.38 746 751 171.9
C 10 65 11727 63.84 746 751 171.9
D 2 232 44581 247.3 740 717 177.4
D 13 239 37846 209.33 740 717 177.4
D 10 246 26238 143.89 740 717 177.4

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