ASTROSAT CZTI

Data Quality Report

Orbit 28897

Creation date: 2024-06-27T19:57:44.855496
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_28897cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28897cztM0_level2_quad_clean.evt
Size (bytes)946,690,56098,591,040
Size902.8 MB 94.0 MB
Events in quadrant A3,644,267675,675
Events in quadrant B3,717,540687,703
Events in quadrant C7,792,045613,039
Events in quadrant D12,999,843474,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158351
B0159761
C0287473
D0436971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76551481.933377%
B76561732.259666%
C765581810.685826%
D7655431556.368387%

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 7850 7655 0 0 0.00% 0.00%
B 7851 7656 1 1 0.01% 0.01%
C 7850 7656 431 431 5.49% 5.63%
D 7849 7654 4011 4011 51.10% 52.40%

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 12975 62.49 944 922 192.9
A 3 137 9494 44.44 944 922 192.9
A 0 226 7979 36.59 944 922 192.9
B 10 245 24547 129.81 934 909 182.1
B 12 111 22976 121.18 934 909 182.1
B 0 190 21319 112.08 934 909 182.1
C 3 233 4174602 19934.21 878 882 209.4
C 14 238 145934 692.79 878 882 209.4
C 2 114 18104 82.25 878 882 209.4
D 8 195 8671447 48200.82 748 726 179.9
D 1 52 1476979 8206.54 748 726 179.9
D 2 234 24320 131.16 748 726 179.9

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