ASTROSAT CZTI

Data Quality Report

Orbit 22897

Creation date: 2024-06-27T18:47:13.135905
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/AS1A08_009T01_9000003382_22897cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22897cztM0_level2_quad_clean.evt
Size (bytes)523,791,360114,053,760
Size499.5 MB 108.8 MB
Events in quadrant A3,077,336777,293
Events in quadrant B3,214,980799,433
Events in quadrant C4,049,972730,348
Events in quadrant D5,081,892695,826

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133792
B0137732
C0162622
D0194812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470150.231839%
B6470340.525502%
C64703635.610510%
D64705648.717156%

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 7715 6471 0 0 0.00% 0.00%
B 7715 6471 2 2 0.03% 0.03%
C 7715 6471 246 246 3.19% 3.80%
D 7715 6471 528 528 6.84% 8.16%

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 10073 59.06 797 783 157.3
A 0 226 6825 38.41 797 783 157.3
A 3 137 6585 36.88 797 783 157.3
B 0 190 33885 221.42 801 783 149.5
B 4 173 19198 123.18 801 783 149.5
B 12 111 17539 112.08 801 783 149.5
C 0 239 999080 5855.63 748 755 170.5
C 14 238 121609 708.86 748 755 170.5
C 0 10 6523 33.83 748 755 170.5
D 1 52 2000581 11207.51 742 721 178.4
D 9 1 68405 379.31 742 721 178.4
D 13 153 61262 339.28 742 721 178.4

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