ASTROSAT CZTI

Data Quality Report

Orbit 34536

Creation date: 2022-02-16T14:56:45.369769
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/AS1A05_115T02_9000004934_34536cztM0_level2.evt modeM0/AS1A05_115T02_9000004934_34536cztM0_level2_quad_clean.evt
Size (bytes)63,639,3608,651,520
Size60.7 MB 8.3 MB
Events in quadrant A407,90852,321
Events in quadrant B406,72753,839
Events in quadrant C480,87950,682
Events in quadrant D581,86648,951

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016372
B016291
C019531
D021851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68730.436681%
B68760.873362%
C687192.765648%
D687182.620087%

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 687 687 0 0 0.00% 0.00%
B 687 687 0 0 0.00% 0.00%
C 687 687 14 14 2.04% 2.04%
D 687 687 11 11 1.60% 1.60%

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 10 83 15875 715.62 100 98 22.0
A 9 143 2581 112.62 100 98 22.0
A 13 6 1085 44.77 100 98 22.0
B 5 172 24189 1167.17 97 96 20.6
B 12 111 2102 97.18 97 96 20.6
B 11 111 1987 91.61 97 96 20.6
C 0 10 54649 2355.85 93 94 23.2
C 15 214 34852 1500.95 93 94 23.2
C 14 67 26564 1143.05 93 94 23.2
D 8 195 101999 4094.1 95 92 24.9
D 12 6 60882 2442.23 95 92 24.9
D 2 249 26817 1073.67 95 92 24.9

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