ASTROSAT CZTI

Data Quality Report

Orbit 33663

Creation date: 2024-06-27T20:51:14.223973
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/AS1T04_076T01_9000004810_33663cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33663cztM0_level2_quad_clean.evt
Size (bytes)1,604,151,360173,609,280
Size1.5 GB 165.6 MB
Events in quadrant A16,893,823936,658
Events in quadrant B9,729,3921,094,366
Events in quadrant C9,018,6531,105,978
Events in quadrant D11,875,3251,028,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0606845
B0386854
C0361754
D0466404

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15820347421.959545%
B158206504.108723%
C158201140.720607%
D158204843.059418%

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 21193 15823 3286 3286 15.51% 20.77%
B 21193 15824 522 522 2.46% 3.30%
C 21193 15825 104 104 0.49% 0.66%
D 21193 15825 417 417 1.97% 2.64%

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 15 169 9587006 28805.56 1665 1629 332.8
A 15 237 834668 2503.41 1665 1629 332.8
A 13 254 23677 66.26 1665 1629 332.8
B 5 172 2085110 5900.1 1837 1790 353.1
B 5 255 65095 179.28 1837 1790 353.1
B 15 85 62345 171.5 1837 1790 353.1
C 15 214 726534 1718.78 1828 1848 421.6
C 3 233 520998 1231.3 1828 1848 421.6
C 0 10 500854 1183.52 1828 1848 421.6
D 8 195 2524110 5687.24 1808 1758 443.5
D 2 250 601763 1352.85 1808 1758 443.5
D 12 6 388901 872.9 1808 1758 443.5

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