ASTROSAT CZTI

Data Quality Report

Orbit 20193

Creation date: 2024-06-27T18:12:16.827368
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/AS1C04_001T01_9000002994_20193cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20193cztM0_level2_quad_clean.evt
Size (bytes)417,974,400123,598,080
Size398.6 MB 117.9 MB
Events in quadrant A2,963,450861,893
Events in quadrant B3,075,981857,832
Events in quadrant C2,969,621813,315
Events in quadrant D3,251,664801,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122431
B0125601
C0122121
D0133251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58521011.725906%
B58521161.982228%
C5853931.588929%
D58531472.511533%

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 7132 5853 13 13 0.18% 0.22%
B 7132 5853 7 7 0.10% 0.12%
C 7133 5854 0 0 0.00% 0.00%
D 7133 5854 73 73 1.02% 1.25%

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 14 238 35970 233.77 755 740 150.7
A 4 2 19065 121.6 755 740 150.7
A 0 226 6721 39.69 755 740 150.7
B 7 220 63124 450.03 742 726 138.7
B 0 197 57534 409.71 742 726 138.7
B 0 190 16765 115.68 742 726 138.7
C 14 238 112974 693.68 708 712 161.8
C 3 233 86808 532.0 708 712 161.8
C 13 61 5056 26.84 708 712 161.8
D 7 38 294368 1693.49 727 706 173.4
D 9 1 49582 281.86 727 706 173.4
D 15 0 30657 172.72 727 706 173.4

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