ASTROSAT CZTI

Data Quality Report

Orbit 42037

Creation date: 2024-06-27T22:36:02.707884
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_037T01_9000005736_42037cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42037cztM0_level2_quad_clean.evt
Size (bytes)324,103,68085,792,320
Size309.1 MB 81.8 MB
Events in quadrant A3,938,060554,739
Events in quadrant B2,795,602593,161
Events in quadrant C2,455,516565,016
Events in quadrant D2,401,335518,758

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149143
B0118362
C0105452
D0110612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52192765.288369%
B5219851.628664%
C521940.076643%
D5219420.804752%

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 7041 5220 244 244 3.47% 4.67%
B 7041 5220 58 58 0.82% 1.11%
C 7041 5220 0 0 0.00% 0.00%
D 7041 5220 31 31 0.44% 0.59%

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 15 223 1031943 8731.31 568 555 118.1
A 10 83 513385 4341.41 568 555 118.1
A 2 79 109280 920.42 568 555 118.1
B 5 255 395435 3539.32 574 558 111.6
B 5 32 66837 594.07 574 558 111.6
B 0 190 51888 460.08 574 558 111.6
C 15 214 220786 1646.89 564 567 133.7
C 12 249 13279 95.07 564 567 133.7
C 0 207 11408 81.07 564 567 133.7
D 13 249 103119 738.95 558 542 138.8
D 2 249 78500 561.6 558 542 138.8
D 12 6 30138 213.21 558 542 138.8

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