ASTROSAT CZTI

Data Quality Report

Orbit 39669

Creation date: 2024-06-27T22:07:33.069730
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_051T01_9000005490_39669cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39669cztM0_level2_quad_clean.evt
Size (bytes)424,255,68095,705,280
Size404.6 MB 91.3 MB
Events in quadrant A3,966,095642,591
Events in quadrant B2,941,567661,818
Events in quadrant C4,341,683618,973
Events in quadrant D3,995,693561,093

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157313
B0128422
C0168272
D0159822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5914911.538722%
B5914390.659452%
C59141392.350355%
D59142794.717619%

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 7226 5915 54 54 0.75% 0.91%
B 7226 5915 18 18 0.25% 0.30%
C 7226 5915 119 119 1.65% 2.01%
D 7226 5915 222 222 3.07% 3.75%

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 708761 5424.98 641 629 130.5
A 10 83 484105 3703.89 641 629 130.5
A 15 174 195670 1494.2 641 629 130.5
B 5 172 188072 1490.35 643 626 125.8
B 5 255 96912 765.55 643 626 125.8
B 4 251 67117 528.66 643 626 125.8
C 15 208 1125438 7669.69 627 632 146.7
C 9 187 483377 3291.68 627 632 146.7
C 15 214 262201 1783.56 627 632 146.7
D 2 250 1037831 6798.58 617 599 152.6
D 13 174 414309 2711.68 617 599 152.6
D 2 153 37188 239.82 617 599 152.6

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