ASTROSAT CZTI

Data Quality Report

Orbit 39641

Creation date: 2024-06-27T22:07:12.695012
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/AS1A12_018T01_9000005488_39641cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39641cztM0_level2_quad_clean.evt
Size (bytes)479,741,76094,806,720
Size457.5 MB 90.4 MB
Events in quadrant A4,071,099652,821
Events in quadrant B2,827,752665,490
Events in quadrant C7,273,812546,602
Events in quadrant D3,119,204585,764

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162833
B0128782
C0258782
D0137642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6011160.266179%
B6011430.715355%
C6011104917.451339%
D6011891.480619%

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 7324 6012 4 4 0.05% 0.07%
B 7324 6012 19 19 0.26% 0.32%
C 7324 6012 988 988 13.49% 16.43%
D 7324 6012 81 81 1.11% 1.35%

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 15 222 1087298 8317.28 639 628 130.7
A 10 83 480318 3671.51 639 628 130.7
A 15 174 19801 146.75 639 628 130.7
B 5 172 210786 1700.86 635 616 123.6
B 5 255 93828 754.34 635 616 123.6
B 12 111 15645 121.63 635 616 123.6
C 9 187 3849468 28248.02 586 588 136.3
C 15 208 861092 6315.48 586 588 136.3
C 15 214 236292 1729.9 586 588 136.3
D 13 171 495603 3298.99 620 604 150.0
D 13 249 37805 247.93 620 604 150.0
D 3 14 28317 184.7 620 604 150.0

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