ASTROSAT CZTI

Data Quality Report

Orbit 46692

Creation date: 2024-06-27T23:26:31.344099
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/AS1A13_092T20_9000006254_46692cztM0_level2.fits modeM0/AS1A13_092T20_9000006254_46692cztM0_level2_quad_clean.evt
Size (bytes)480,591,360106,087,680
Size458.3 MB 101.2 MB
Events in quadrant A6,319,342698,128
Events in quadrant B3,713,428730,454
Events in quadrant C2,811,849709,592
Events in quadrant D4,449,241627,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228012
B0153972
C0131082
D0178422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63952433.799844%
B63951642.564504%
C6395260.406568%
D63952483.878030%

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 7590 6396 122 122 1.61% 1.91%
B 7590 6396 74 74 0.97% 1.16%
C 7590 6396 4 4 0.05% 0.06%
D 7590 6396 209 209 2.75% 3.27%

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 10 83 3395961 23243.38 706 693 146.1
A 15 254 132446 901.95 706 693 146.1
A 9 191 15286 99.9 706 693 146.1
B 4 171 542152 3940.85 714 693 137.4
B 0 190 123863 896.46 714 693 137.4
B 0 198 84637 610.96 714 693 137.4
C 14 254 34610 204.78 705 709 165.5
C 15 208 16444 95.05 705 709 165.5
C 12 2 5585 29.45 705 709 165.5
D 1 52 1058936 6062.89 688 668 174.5
D 13 249 304891 1742.92 688 668 174.5
D 2 249 126581 721.36 688 668 174.5

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