ASTROSAT CZTI

Data Quality Report

Orbit 26879

Creation date: 2024-06-27T19:33:58.864517
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/AS1T03_224T01_9000003872_26879cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26879cztM0_level2_quad_clean.evt
Size (bytes)517,452,48081,619,200
Size493.5 MB 77.8 MB
Events in quadrant A3,644,325507,693
Events in quadrant B3,658,334526,893
Events in quadrant C3,722,737505,590
Events in quadrant D4,213,781486,568

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146600
B0146860
C0150650
D0165340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6372310.486503%
B6371821.287082%
C6371931.459739%
D63711372.150369%

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 7737 6373 0 0 0.00% 0.00%
B 7736 6372 15 15 0.19% 0.24%
C 7736 6372 0 0 0.00% 0.00%
D 7736 6372 104 104 1.34% 1.63%

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 13 240049 1379.33 883 871 173.4
A 13 254 10095 53.19 883 871 173.4
A 3 137 7879 40.41 883 871 173.4
B 10 246 73540 442.02 892 871 164.4
B 0 190 65319 392.01 892 871 164.4
B 12 111 19087 110.8 892 871 164.4
C 0 79 189556 952.95 868 877 198.0
C 14 238 144687 726.34 868 877 198.0
C 13 61 6068 26.22 868 877 198.0
D 7 80 555569 2776.93 856 839 199.8
D 11 176 160749 800.5 856 839 199.8
D 1 52 126764 630.37 856 839 199.8

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