ASTROSAT CZTI

Data Quality Report

Orbit 40123

Creation date: 2024-06-27T22:12:36.260613
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_004T01_9000005520_40123cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40123cztM0_level2_quad_clean.evt
Size (bytes)321,917,76088,312,320
Size307.0 MB 84.2 MB
Events in quadrant A2,748,067593,431
Events in quadrant B2,670,553608,226
Events in quadrant C2,607,413581,487
Events in quadrant D3,474,779517,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116523
B0117122
C0111842
D0141272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5329210.394070%
B5329591.107150%
C5329430.806906%
D53292925.479452%

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 7030 5330 6 6 0.09% 0.11%
B 7030 5330 33 33 0.47% 0.62%
C 7030 5330 32 32 0.46% 0.60%
D 7030 5330 256 256 3.64% 4.80%

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 475369 3942.63 586 574 120.4
A 13 254 6694 50.82 586 574 120.4
A 3 137 6415 48.5 586 574 120.4
B 4 171 188108 1646.9 584 567 113.9
B 5 255 128810 1126.17 584 567 113.9
B 0 218 17625 149.8 584 567 113.9
C 15 214 219362 1623.48 576 580 134.8
C 0 10 100617 742.33 576 580 134.8
C 14 254 38063 278.14 576 580 134.8
D 5 32 360603 2602.56 563 548 138.3
D 13 249 312184 2252.58 563 548 138.3
D 2 249 163409 1177.2 563 548 138.3

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