ASTROSAT CZTI

Data Quality Report

Orbit 03934

Creation date: 2024-06-27T14:35:24.960298
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/AS1G05_172T01_9000000502_03934cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03934cztM0_level2_quad_clean.evt
Size (bytes)700,272,00069,408,000
Size667.8 MB 66.2 MB
Events in quadrant A3,626,247427,120
Events in quadrant B4,686,462424,303
Events in quadrant C2,821,736424,402
Events in quadrant D9,634,073371,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150333
B0182392
C0132152
D0331332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6504510.784133%
B65041011.552891%
C650460.092251%
D6504192929.658672%

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 7644 6505 11 11 0.14% 0.17%
B 7644 6505 26 26 0.34% 0.40%
C 7644 6505 2 2 0.03% 0.03%
D 7644 6505 1892 1892 24.75% 29.09%

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 8 15 552687 3605.1 748 733 153.1
A 0 118 137561 893.69 748 733 153.1
A 0 226 20095 126.46 748 733 153.1
B 3 0 1483733 10118.72 755 736 146.6
B 15 204 82294 556.48 755 736 146.6
B 4 81 70646 477.01 755 736 146.6
C 7 222 19251 111.08 716 719 166.8
C 13 61 6086 32.17 716 719 166.8
C 7 247 3043 13.93 716 719 166.8
D 9 82 4004351 25462.41 648 630 157.2
D 2 63 2640624 16789.53 648 630 157.2
D 2 232 243484 1544.47 648 630 157.2

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
Veto Counter