ASTROSAT CZTI

Data Quality Report

Orbit 20220210_A10_058T06_9000004920_level2

Creation date: 2026-01-01T00:06:08.557412
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/AS1A10_058T06_9000004920cztM0_level2.fits modeM0/AS1A10_058T06_9000004920cztM0_level2_quad_clean.evt
Size (bytes)736,361,280645,166,080
Size702.2 MB 615.3 MB
Events in quadrant A4,724,0263,950,704
Events in quadrant B4,457,7943,925,109
Events in quadrant C4,500,8983,648,596
Events in quadrant D3,518,9042,918,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08280
B015280
C015280
D015280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01726080
B01801600
C01910820
D03015010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03050
B03050
C03050
D03050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7485112581.680672%
B7485121292.844317%
C7485121332.849661%
D748511131515.116699%

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 105240 74831 0 0 0.00% 0.00%
B 105240 74843 0 0 0.00% 0.00%
C 105240 74788 0 0 0.00% 0.00%
D 105240 71912 0 0 0.00% 0.00%

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 19 3825 9.0 1234 1167 295.3
A 7 110 3747 8.74 1234 1167 295.3
A 0 29 3666 8.46 1234 1167 295.3
B 2 9 3815 11.75 1183 1136 228.0
B 3 80 3294 9.46 1183 1136 228.0
B 5 128 3182 8.97 1183 1136 228.0
C 1 81 3722 8.76 1188 1122 296.6
C 1 80 3687 8.65 1188 1122 296.6
C 3 202 3420 7.75 1188 1122 296.6
D 7 3 2647 6.51 1010 926 264.4
D 10 113 2638 6.47 1010 926 264.4
D 6 67 2573 6.23 1010 926 264.4

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