ASTROSAT CZTI

Data Quality Report

Orbit 21562

Creation date: 2024-06-27T18:29:32.626677
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/AS1A06_009T05_9000003196_21562cztM0_level2.evt modeM0/AS1A06_009T05_9000003196_21562cztM0_level2_quad_clean.evt
Size (bytes)468,362,88080,144,640
Size446.7 MB 76.4 MB
Events in quadrant A3,052,271506,369
Events in quadrant B3,302,204514,486
Events in quadrant C3,067,841493,849
Events in quadrant D4,320,040458,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132201
B0138741
C0131861
D0171661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6512340.522113%
B6513490.752341%
C6513470.721634%
D65133575.481345%

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 7547 6513 0 0 0.00% 0.00%
B 7548 6514 4 4 0.05% 0.06%
C 7548 6514 0 0 0.00% 0.00%
D 7548 6514 297 297 3.93% 4.56%

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 13 254 10601 61.95 788 774 158.6
A 0 226 6767 37.78 788 774 158.6
A 3 137 6352 35.17 788 774 158.6
B 0 228 100879 661.08 791 771 151.4
B 0 230 73685 481.5 791 771 151.4
B 12 111 17817 112.57 791 771 151.4
C 14 238 120216 676.35 756 760 176.6
C 13 61 5425 26.41 756 760 176.6
C 3 233 1882 6.35 756 760 176.6
D 1 52 997717 5522.01 742 719 180.5
D 2 136 166471 918.04 742 719 180.5
D 7 38 146195 805.74 742 719 180.5

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