ASTROSAT CZTI

Data Quality Report

Orbit 54170

Creation date: 2025-10-03T00:39:38.166982
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/AS1A14_012T01_9000006512_54170cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54170cztM0_level2_quad_clean.evt
Size (bytes)673,764,48086,878,080
Size642.6 MB 82.9 MB
Events in quadrant A4,328,602604,602
Events in quadrant B5,947,999641,044
Events in quadrant C4,530,094590,044
Events in quadrant D9,619,495332,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177411
B0223131
C0178461
D0332771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66314717.103001%
B66325297.976478%
C66323084.644150%
D6632282742.626659%

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 7331 6632 309 309 4.21% 4.66%
B 7332 6633 178 178 2.43% 2.68%
C 7332 6633 200 200 2.73% 3.02%
D 7332 6632 2182 2182 29.76% 32.90%

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 7 29 826878 4857.49 686 667 170.1
A 15 174 328537 1927.63 686 667 170.1
A 0 8 238747 1399.73 686 667 170.1
B 15 20 2131130 14856.67 675 651 143.4
B 5 172 579006 4033.1 675 651 143.4
B 4 171 235497 1637.67 675 651 143.4
C 15 177 1009417 5497.23 676 669 183.5
C 9 38 309767 1684.45 676 669 183.5
C 10 171 252885 1374.47 676 669 183.5
D 8 176 6551086 49880.82 454 432 131.3
D 2 165 506526 3853.72 454 432 131.3
D 3 144 281733 2142.0 454 432 131.3

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