ASTROSAT CZTI

Data Quality Report

Orbit 38254

Creation date: 2024-06-27T21:50:20.883690
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/AS1A07_145T01_9000005370_38254cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38254cztM0_level2_quad_clean.evt
Size (bytes)493,188,48091,117,440
Size470.3 MB 86.9 MB
Events in quadrant A3,652,361621,558
Events in quadrant B3,592,350627,917
Events in quadrant C2,782,757612,438
Events in quadrant D7,795,070505,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144733
B0146572
C0117792
D0271192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55951342.394996%
B55952183.896336%
C5595120.214477%
D559584915.174263%

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 7208 5596 81 81 1.12% 1.45%
B 7208 5596 136 136 1.89% 2.43%
C 7208 5596 4 4 0.06% 0.07%
D 7208 5596 956 956 13.26% 17.08%

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 12 16 511777 4069.78 613 599 125.6
A 10 83 404361 3214.58 613 599 125.6
A 7 16 210913 1674.43 613 599 125.6
B 5 172 790496 6746.69 609 591 117.1
B 5 184 303677 2588.7 609 591 117.1
B 4 232 32517 272.68 609 591 117.1
C 15 214 235868 1660.87 604 608 141.6
C 9 236 86377 605.51 604 608 141.6
C 15 208 64112 448.32 604 608 141.6
D 10 203 2204581 15558.32 578 562 141.7
D 12 235 2132938 15052.59 578 562 141.7
D 13 138 378945 2671.03 578 562 141.7

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