ASTROSAT CZTI

Data Quality Report

Orbit 31015

Creation date: 2024-06-27T20:22:18.498444
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_071T52_9000004480_31015cztM0_level2.evt modeM0/AS1A10_071T52_9000004480_31015cztM0_level2_quad_clean.evt
Size (bytes)497,946,24090,823,680
Size474.9 MB 86.6 MB
Events in quadrant A2,921,736603,496
Events in quadrant B4,817,136592,595
Events in quadrant C3,016,638571,044
Events in quadrant D3,913,191559,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126721
B0186461
C0128521
D0155841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6077590.970874%
B60781131.859164%
C60781302.138861%
D60781081.776900%

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 7052 6077 0 0 0.00% 0.00%
B 7053 6078 9 9 0.13% 0.15%
C 7053 6078 16 16 0.23% 0.26%
D 7053 6078 68 68 0.96% 1.12%

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 10785 65.73 757 741 152.8
A 3 137 7365 43.35 757 741 152.8
A 0 226 6555 38.05 757 741 152.8
B 6 159 1715002 11953.16 740 723 143.4
B 0 190 58527 403.05 740 723 143.4
B 4 80 37366 255.5 740 723 143.4
C 14 238 114737 669.23 720 724 170.4
C 0 10 66953 388.75 720 724 170.4
C 2 114 14312 79.76 720 724 170.4
D 8 195 633609 3625.91 729 712 174.5
D 12 33 306571 1752.29 729 712 174.5
D 2 250 86969 494.17 729 712 174.5

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