ASTROSAT CZTI

Data Quality Report

Orbit 31133

Creation date: 2024-06-27T20:24:01.479756
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/AS1T04_018T01_9000004494_31133cztM0_level2.evt modeM0/AS1T04_018T01_9000004494_31133cztM0_level2_quad_clean.evt
Size (bytes)555,886,080102,427,200
Size530.1 MB 97.7 MB
Events in quadrant A3,342,837678,053
Events in quadrant B5,182,754671,804
Events in quadrant C3,639,643652,971
Events in quadrant D4,227,711643,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141592
B0201212
C0150702
D0174722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6538671.024778%
B65381492.278984%
C65382423.701438%
D6538741.131845%

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 7653 6539 0 0 0.00% 0.00%
B 7653 6539 4 4 0.05% 0.06%
C 7653 6539 30 30 0.39% 0.46%
D 7653 6539 11 11 0.14% 0.17%

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 12111 66.11 865 850 170.3
A 3 137 8302 43.75 865 850 170.3
A 0 226 7421 38.57 865 850 170.3
B 6 159 1736224 10817.45 849 829 160.4
B 0 190 31283 189.83 849 829 160.4
B 0 230 19691 117.57 849 829 160.4
C 0 10 210731 1102.79 819 826 190.3
C 14 238 134617 702.91 819 826 190.3
C 14 176 59156 306.45 819 826 190.3
D 8 195 932365 4369.08 832 817 213.2
D 2 250 64609 299.19 832 817 213.2
D 2 120 27883 126.94 832 817 213.2

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter