ASTROSAT CZTI

Data Quality Report

Orbit 18163

Creation date: 2024-06-27T17:46:02.600362
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/AS1T03_014T01_9000002704_18163cztM0_level2.evt modeM0/AS1T03_014T01_9000002704_18163cztM0_level2_quad_clean.evt
Size (bytes)528,940,80092,410,560
Size504.4 MB 88.1 MB
Events in quadrant A3,959,737595,875
Events in quadrant B3,165,454613,257
Events in quadrant C3,937,436573,785
Events in quadrant D4,529,645576,188

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156881
B0131251
C0155701
D0176231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62962534.018424%
B6296530.841804%
C62962994.749047%
D62971322.096236%

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 7506 6297 146 146 1.95% 2.32%
B 7506 6297 1 1 0.01% 0.02%
C 7506 6297 157 157 2.09% 2.49%
D 7507 6298 69 69 0.92% 1.10%

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 15 174 897198 5601.9 796 783 160.0
A 0 226 6939 38.47 796 783 160.0
A 12 194 5767 31.15 796 783 160.0
B 0 189 25604 164.38 800 782 151.0
B 12 111 17456 110.42 800 782 151.0
B 11 111 15198 95.47 800 782 151.0
C 4 254 868699 4948.98 755 762 175.4
C 14 238 118918 673.73 755 762 175.4
C 13 61 5297 25.86 755 762 175.4
D 7 238 1296039 6821.15 778 759 189.9
D 11 176 161228 845.06 778 759 189.9
D 10 70 57606 299.37 778 759 189.9

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