ASTROSAT CZTI

Data Quality Report

Orbit 19821

Creation date: 2024-06-27T18:07:31.940992
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_118T01_9000002962_19821cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19821cztM0_level2_quad_clean.evt
Size (bytes)541,592,64086,184,000
Size516.5 MB 82.2 MB
Events in quadrant A3,566,686543,111
Events in quadrant B3,420,803554,822
Events in quadrant C3,344,839530,268
Events in quadrant D5,586,822485,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152681
B0147281
C0145521
D0214081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71061972.772305%
B71071772.490502%
C71071702.392008%
D710674310.455953%

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 7342 7107 12 12 0.16% 0.17%
B 7343 7108 2 2 0.03% 0.03%
C 7343 7108 0 0 0.00% 0.00%
D 7342 7107 534 534 7.27% 7.51%

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 9 143 179048 1015.01 858 837 175.6
A 14 238 62051 348.65 858 837 175.6
A 5 16 11008 57.93 858 837 175.6
B 7 220 47027 279.06 854 833 165.5
B 12 111 20489 118.74 854 833 165.5
B 11 111 18045 103.98 854 833 165.5
C 14 238 126633 647.97 825 829 194.2
C 13 61 5634 24.75 825 829 194.2
C 3 233 2207 7.1 825 829 194.2
D 12 33 1515438 7662.47 811 786 197.7
D 1 52 799447 4040.34 811 786 197.7
D 7 238 154741 778.84 811 786 197.7

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