ASTROSAT CZTI

Data Quality Report

Orbit 04226

Creation date: 2024-06-27T14:39:02.160149
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_240T01_9000000536_04226cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04226cztM0_level2_quad_clean.evt
Size (bytes)571,380,48070,528,320
Size544.9 MB 67.3 MB
Events in quadrant A4,761,216411,931
Events in quadrant B4,967,132435,413
Events in quadrant C3,295,366426,305
Events in quadrant D3,843,782411,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182393
B0189572
C0138522
D0157882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64495949.210730%
B64493986.171499%
C64491111.721197%
D64491562.418980%

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 7714 6450 340 340 4.41% 5.27%
B 7714 6450 179 179 2.32% 2.78%
C 7714 6450 0 0 0.00% 0.00%
D 7714 6450 14 14 0.18% 0.22%

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 0 50 1075617 6305.17 846 831 170.5
A 14 111 399035 2336.04 846 831 170.5
A 15 234 19240 108.0 846 831 170.5
B 3 0 1313111 8173.91 844 829 160.5
B 0 182 241972 1502.03 844 829 160.5
B 14 167 69451 427.43 844 829 160.5
C 9 144 110100 576.59 815 821 189.5
C 13 61 6638 30.69 815 821 189.5
C 14 67 3153 12.3 815 821 189.5
D 11 132 432693 2142.47 832 812 201.6
D 2 63 66090 323.83 832 812 201.6
D 13 239 64204 314.47 832 812 201.6

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