ASTROSAT CZTI

Data Quality Report

Orbit 21238

Creation date: 2024-06-27T18:25:18.041198
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_037T01_9000003140_21238cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21238cztM0_level2_quad_clean.evt
Size (bytes)693,103,680100,719,360
Size661.0 MB 96.1 MB
Events in quadrant A3,780,148667,817
Events in quadrant B3,767,259678,175
Events in quadrant C3,623,228663,535
Events in quadrant D9,303,866509,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162652
B0161382
C0157212
D0329072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7619600.787505%
B7619740.971256%
C7618961.260173%
D7618184324.192701%

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 8720 7621 14 14 0.16% 0.18%
B 8720 7621 3 3 0.03% 0.04%
C 8719 7620 0 0 0.00% 0.00%
D 8719 7619 1741 1741 19.97% 22.85%

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 12 96 79248 417.1 926 906 187.8
A 5 16 67435 354.21 926 906 187.8
A 11 47 43783 228.28 926 906 187.8
B 0 190 32536 175.98 930 908 179.7
B 3 64 26223 140.85 930 908 179.7
B 12 111 21499 114.57 930 908 179.7
C 14 238 139777 667.0 892 897 208.2
C 13 61 6227 25.6 892 897 208.2
C 0 10 5822 23.65 892 897 208.2
D 1 239 3879398 20966.54 759 738 185.0
D 7 238 1372321 7414.25 759 738 185.0
D 13 153 516851 2789.91 759 738 185.0

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