ASTROSAT CZTI

Data Quality Report

Orbit 30860

Creation date: 2024-06-27T20:20:28.276325
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_071T46_9000004460_30860cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30860cztM0_level2_quad_clean.evt
Size (bytes)702,743,04082,656,000
Size670.2 MB 78.8 MB
Events in quadrant A3,513,664540,871
Events in quadrant B9,943,365521,562
Events in quadrant C3,672,075504,678
Events in quadrant D3,732,170499,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141462
B0338684
C0147242
D0150772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254460.735529%
B6253146023.348793%
C62531602.558772%
D6253270.431793%

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 7569 6255 22 22 0.29% 0.35%
B 7568 6253 766 766 10.12% 12.25%
C 7568 6254 48 48 0.63% 0.77%
D 7568 6254 15 15 0.20% 0.24%

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 13 173860 1004.91 866 850 172.2
A 13 254 12122 65.47 866 850 172.2
A 3 137 7889 40.89 866 850 172.2
B 6 36 4903730 31889.27 824 806 153.7
B 6 159 1731269 11255.16 824 806 153.7
B 5 172 37903 241.28 824 806 153.7
C 0 10 191889 1008.65 811 816 189.4
C 14 238 133546 700.66 811 816 189.4
C 2 16 123790 649.16 811 816 189.4
D 8 195 510363 2645.01 813 795 192.7
D 2 250 90612 466.21 813 795 192.7
D 2 234 26152 131.62 813 795 192.7

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