ASTROSAT CZTI

Data Quality Report

Orbit 06542

Creation date: 2024-06-27T15:08:32.694637
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_091T01_9000000880_06542cztM0_level2.evt modeM0/AS1G06_091T01_9000000880_06542cztM0_level2_quad_clean.evt
Size (bytes)459,132,480107,069,760
Size437.9 MB 102.1 MB
Events in quadrant A3,476,405691,787
Events in quadrant B3,324,581716,929
Events in quadrant C3,019,322715,109
Events in quadrant D3,646,279669,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147713
B0141172
C0132082
D0153362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64511221.891180%
B64511041.612153%
C6451190.294528%
D64511422.201209%

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 7796 6452 84 84 1.08% 1.30%
B 7796 6452 56 56 0.72% 0.87%
C 7796 6452 2 2 0.03% 0.03%
D 7796 6452 87 87 1.12% 1.35%

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 13 251 352434 2294.59 756 740 153.3
A 15 236 145376 943.66 756 740 153.3
A 14 111 41515 266.03 756 740 153.3
B 4 48 201363 1404.61 775 758 142.8
B 4 170 30735 209.9 775 758 142.8
B 0 214 26160 177.86 775 758 142.8
C 8 128 11969 63.15 766 770 177.3
C 9 237 6985 35.04 766 770 177.3
C 8 112 6274 31.04 766 770 177.3
D 14 34 356229 1943.59 748 728 182.9
D 2 33 186830 1017.45 748 728 182.9
D 2 152 146854 798.89 748 728 182.9

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