ASTROSAT CZTI

Data Quality Report

Orbit 28908

Creation date: 2024-06-27T19:57:52.223523
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/AS1A10_064T01_9000004144_28908cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28908cztM0_level2_quad_clean.evt
Size (bytes)803,779,20069,546,240
Size766.5 MB 66.3 MB
Events in quadrant A3,340,468435,466
Events in quadrant B3,402,052443,370
Events in quadrant C8,008,403385,247
Events in quadrant D9,150,249384,335

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139012
B0139532
C0285252
D0316972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6555620.945843%
B65551031.571320%
C655588213.455378%
D6555192929.427918%

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 7760 6556 0 0 0.00% 0.00%
B 7760 6556 3 3 0.04% 0.05%
C 7760 6556 306 306 3.94% 4.67%
D 7760 6556 2081 2081 26.82% 31.74%

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 6 28047 160.32 859 843 169.7
A 13 254 11357 61.96 859 843 169.7
A 3 137 7968 41.99 859 843 169.7
B 10 245 38471 233.02 858 838 161.5
B 12 111 19495 115.52 858 838 161.5
B 11 111 17824 105.18 858 838 161.5
C 3 233 4742655 25926.41 791 798 182.9
C 14 238 131509 714.67 791 798 182.9
C 4 254 27658 146.86 791 798 182.9
D 8 195 3754787 20775.17 760 739 180.7
D 13 104 1854152 10256.92 760 739 180.7
D 1 52 542528 2998.3 760 739 180.7

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