ASTROSAT CZTI

Data Quality Report

Orbit 16780

Creation date: 2024-06-27T17:27:40.274832
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_004T02_9000002490_16780cztM0_level2.evt modeM0/AS1A05_004T02_9000002490_16780cztM0_level2_quad_clean.evt
Size (bytes)949,786,560100,152,000
Size905.8 MB 95.5 MB
Events in quadrant A7,566,234603,689
Events in quadrant B3,912,686701,222
Events in quadrant C5,397,786662,651
Events in quadrant D11,378,018537,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276343
B0164652
C0211682
D0390552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7557158620.987164%
B75571051.389440%
C75574355.756252%
D7557273436.178378%

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 7818 7559 1319 1319 16.87% 17.45%
B 7818 7559 2 2 0.03% 0.03%
C 7818 7559 49 49 0.63% 0.65%
D 7818 7558 2117 2117 27.08% 28.01%

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 4360205 25775.99 834 814 169.1
A 0 226 7399 38.94 834 814 169.1
A 12 194 6239 32.08 834 814 169.1
B 15 35 139785 779.0 923 899 178.3
B 0 229 45641 250.96 923 899 178.3
B 3 209 28534 155.0 923 899 178.3
C 3 233 1710954 8314.61 878 884 205.7
C 14 238 133231 643.49 878 884 205.7
C 0 207 129355 624.64 878 884 205.7
D 1 52 7812335 42813.44 741 721 182.5
D 12 218 340795 1863.86 741 721 182.5
D 11 176 302658 1654.84 741 721 182.5

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