ASTROSAT CZTI

Data Quality Report

Orbit 34427

Creation date: 2024-06-27T21:00:23.060947
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/AS1A05_082T10_9000004916_34427cztM0_level2.evt modeM0/AS1A05_082T10_9000004916_34427cztM0_level2_quad_clean.evt
Size (bytes)491,817,60074,640,960
Size469.0 MB 71.2 MB
Events in quadrant A2,734,537468,785
Events in quadrant B3,770,264474,735
Events in quadrant C3,085,155469,398
Events in quadrant D4,907,644438,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120353
B0152012
C0125952
D0187772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5858100.170707%
B58582794.762718%
C5858180.307272%
D58583405.804029%

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 7200 5859 0 0 0.00% 0.00%
B 7200 5859 187 187 2.60% 3.19%
C 7200 5859 8 8 0.11% 0.14%
D 7200 5859 263 263 3.65% 4.49%

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 35706 254.58 684 670 137.6
A 7 16 26538 187.97 684 670 137.6
A 9 143 20532 144.32 684 670 137.6
B 5 172 782635 6011.23 668 649 130.1
B 0 190 237296 1819.14 668 649 130.1
B 3 112 34788 262.43 668 649 130.1
C 15 214 245892 1583.19 663 669 154.9
C 14 67 157624 1013.32 663 669 154.9
C 0 10 63043 402.69 663 669 154.9
D 8 195 934693 5883.41 647 630 158.8
D 7 80 382702 2406.57 647 630 158.8
D 2 250 276316 1736.47 647 630 158.8

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