ASTROSAT CZTI

Data Quality Report

Orbit 12490

Creation date: 2024-06-27T16:28:07.372840
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/AS1A04_174T01_9000001850_12490cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12490cztM0_level2_quad_clean.evt
Size (bytes)452,687,04088,214,400
Size431.7 MB 84.1 MB
Events in quadrant A3,411,015570,956
Events in quadrant B3,280,932592,614
Events in quadrant C2,811,569575,152
Events in quadrant D3,814,775529,683

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139592
B0133441
C0118871
D0150671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5762350.607428%
B5762621.076015%
C5762110.190906%
D57622734.737938%

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 7093 5764 5 5 0.07% 0.09%
B 7093 5764 19 19 0.27% 0.33%
C 7093 5764 0 0 0.00% 0.00%
D 7093 5764 232 232 3.27% 4.02%

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 1 162 161836 1084.36 733 719 148.6
A 1 178 101881 680.85 733 719 148.6
A 1 161 84748 565.54 733 719 148.6
B 4 239 185816 1325.34 743 728 139.7
B 0 230 58480 413.54 743 728 139.7
B 0 219 43027 302.89 743 728 139.7
C 15 208 5469 28.58 719 727 165.9
C 13 61 5213 27.04 719 727 165.9
C 14 234 3746 18.2 719 727 165.9
D 1 52 989291 5940.27 698 680 166.4
D 7 80 84172 501.68 698 680 166.4
D 7 71 44302 262.11 698 680 166.4

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