ASTROSAT CZTI

Data Quality Report

Orbit 20411

Creation date: 2024-06-27T18:15:05.131992
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/AS1A05_140T01_9000003016_20411cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20411cztM0_level2_quad_clean.evt
Size (bytes)486,771,84090,849,600
Size464.2 MB 86.6 MB
Events in quadrant A3,261,936588,934
Events in quadrant B3,455,177592,718
Events in quadrant C3,326,477568,589
Events in quadrant D4,258,995549,387

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133732
B0139552
C0134812
D0166792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470450.695518%
B64711031.591717%
C6471961.483542%
D64711902.936177%

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 7565 6472 0 0 0.00% 0.00%
B 7566 6473 4 4 0.05% 0.06%
C 7566 6471 0 0 0.00% 0.00%
D 7566 6473 128 128 1.69% 1.98%

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 11 29 8791 47.65 844 828 167.1
A 0 226 7380 39.2 844 828 167.1
A 3 137 6741 35.38 844 828 167.1
B 0 189 59598 369.58 840 819 159.0
B 10 245 56260 348.59 840 819 159.0
B 0 183 25633 156.02 840 819 159.0
C 14 238 131462 700.71 812 819 186.4
C 7 220 23518 121.75 812 819 186.4
C 13 61 5655 25.94 812 819 186.4
D 1 52 511392 2585.16 813 790 197.5
D 13 153 278862 1407.87 813 790 197.5
D 6 143 211312 1065.86 813 790 197.5

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