ASTROSAT CZTI

Data Quality Report

Orbit 46693

Creation date: 2024-06-27T23:26:32.212603
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_46693cztM0_level2.fits modeM0/AS1A13_092T20_9000006254_46693cztM0_level2_quad_clean.evt
Size (bytes)506,511,360104,636,160
Size483.0 MB 99.8 MB
Events in quadrant A6,337,384691,745
Events in quadrant B3,665,378719,605
Events in quadrant C3,336,494695,482
Events in quadrant D4,908,322609,809

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228762
B0153663
C0146672
D0190702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64732213.414182%
B64721572.425834%
C64731221.884752%
D64734136.380349%

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 7578 6474 63 63 0.83% 0.97%
B 7577 6473 45 45 0.59% 0.70%
C 7578 6474 104 104 1.37% 1.61%
D 7578 6474 340 340 4.49% 5.25%

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 10 83 3385929 23041.07 711 698 146.9
A 9 191 53999 362.79 711 698 146.9
A 15 254 40607 271.63 711 698 146.9
B 4 171 433142 3068.94 719 698 140.9
B 0 198 114482 807.5 719 698 140.9
B 0 190 99745 702.91 719 698 140.9
C 9 54 431835 2604.3 708 715 165.5
C 14 254 34821 206.02 708 715 165.5
C 12 2 33208 196.28 708 715 165.5
D 1 52 1491721 8613.88 682 660 173.1
D 13 249 352230 2031.02 682 660 173.1
D 2 249 93382 535.66 682 660 173.1

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