ASTROSAT CZTI

Data Quality Report

Orbit 47024

Creation date: 2024-06-27T23:30:51.691670
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/AS1C09_005T01_9000006296_47024cztM0_level2.fits modeM0/AS1C09_005T01_9000006296_47024cztM0_level2_quad_clean.evt
Size (bytes)623,381,76098,303,040
Size594.5 MB 93.7 MB
Events in quadrant A5,980,713701,874
Events in quadrant B10,072,062499,660
Events in quadrant C2,760,608707,466
Events in quadrant D3,776,000629,482

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217871
B0343231
C0127821
D0155871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62751652.629482%
B6275244939.027888%
C6275420.669323%
D62762764.397706%

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 7415 6276 28 28 0.38% 0.45%
B 7415 6276 1781 1781 24.02% 28.38%
C 7415 6276 2 2 0.03% 0.03%
D 7416 6277 212 212 2.86% 3.38%

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 3189816 21966.32 705 689 145.2
A 9 191 38226 258.55 705 689 145.2
A 13 248 18297 121.28 705 689 145.2
B 3 112 7127524 59475.83 618 599 119.8
B 4 171 193978 1613.79 618 599 119.8
B 0 200 143733 1194.49 618 599 119.8
C 14 254 32105 193.6 698 701 162.2
C 13 61 4506 23.46 698 701 162.2
C 3 233 4177 21.43 698 701 162.2
D 13 249 578737 3385.22 693 670 170.8
D 12 233 253334 1479.63 693 670 170.8
D 2 249 96846 563.22 693 670 170.8

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