ASTROSAT CZTI

Data Quality Report

Orbit 06855

Creation date: 2024-06-27T15:13:16.410883
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/AS1G06_164T01_9000000946_06855cztM0_level2.evt modeM0/AS1G06_164T01_9000000946_06855cztM0_level2_quad_clean.evt
Size (bytes)438,062,40087,952,320
Size417.8 MB 83.9 MB
Events in quadrant A3,194,463547,116
Events in quadrant B3,181,776560,144
Events in quadrant C3,062,969547,628
Events in quadrant D3,361,848531,641

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142523
B0141332
C0139822
D0146102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68451422.074507%
B68451301.899196%
C6845851.241782%
D68451241.811541%

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 8465 6847 21 21 0.25% 0.31%
B 8465 6847 3 3 0.04% 0.04%
C 8465 6847 1 1 0.01% 0.01%
D 8465 6847 20 20 0.24% 0.29%

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 4 2 121123 739.47 791 771 162.8
A 13 248 14031 81.47 791 771 162.8
A 13 251 11889 68.31 791 771 162.8
B 4 172 42625 270.97 797 776 154.4
B 15 255 36260 229.75 797 776 154.4
B 12 111 16467 101.6 797 776 154.4
C 9 247 62466 349.59 764 765 176.5
C 1 3 8053 41.29 764 765 176.5
C 9 16 6192 30.75 764 765 176.5
D 8 195 170763 909.47 766 739 186.9
D 14 34 105925 562.65 766 739 186.9
D 2 216 77655 411.43 766 739 186.9

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