ASTROSAT CZTI

Data Quality Report

Orbit 03520

Creation date: 2024-06-27T14:30:27.402362
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/AS1G05_045T01_9000000468_03520cztM0_level2.evt modeM0/AS1G05_045T01_9000000468_03520cztM0_level2_quad_clean.evt
Size (bytes)472,417,92092,603,520
Size450.5 MB 88.3 MB
Events in quadrant A3,624,058583,669
Events in quadrant B3,507,597587,119
Events in quadrant C3,550,404581,081
Events in quadrant D3,148,318563,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158033
B0153742
C0154262
D0148212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70121472.096406%
B7012640.912721%
C7012690.984027%
D7012410.584712%

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 7662 7013 97 97 1.27% 1.38%
B 7662 7013 9 9 0.12% 0.13%
C 7662 7013 31 31 0.40% 0.44%
D 7662 7013 33 33 0.43% 0.47%

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 50 486549 3072.23 774 756 158.1
A 8 15 49424 307.78 774 756 158.1
A 14 238 39989 248.12 774 756 158.1
B 15 204 268746 1738.38 793 773 154.2
B 0 228 44077 280.92 793 773 154.2
B 0 229 36396 231.09 793 773 154.2
C 1 192 392620 2193.02 764 768 178.7
C 1 16 147190 819.46 764 768 178.7
C 15 208 11266 58.75 764 768 178.7
D 13 223 66397 355.35 758 735 184.8
D 1 20 37752 200.33 758 735 184.8
D 2 37 34643 183.5 758 735 184.8

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