ASTROSAT CZTI

Data Quality Report

Orbit 51205

Creation date: 2025-03-17T13:53:08.716652
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/AS1C07_001T01_9000006454_51205cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51205cztM0_level2_quad_clean.evt
Size (bytes)595,356,48097,007,040
Size567.8 MB 92.5 MB
Events in quadrant A4,811,457628,223
Events in quadrant B5,154,871689,461
Events in quadrant C6,517,512573,484
Events in quadrant D5,032,543576,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191222
B0199492
C0239972
D0199432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67352794.142539%
B67353965.879733%
C673588613.155160%
D67353194.736451%

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 7870 6736 195 195 2.48% 2.89%
B 7870 6736 276 276 3.51% 4.10%
C 7870 6736 843 843 10.71% 12.51%
D 7870 6735 265 265 3.37% 3.93%

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 3 874403 5062.61 691 675 172.6
A 13 248 264871 1530.82 691 675 172.6
A 7 206 261393 1510.67 691 675 172.6
B 8 128 765197 5221.89 692 669 146.4
B 10 254 524722 3579.39 692 669 146.4
B 4 171 244104 1662.71 692 669 146.4
C 4 12 2474362 13570.67 656 650 182.3
C 15 224 493843 2705.63 656 650 182.3
C 12 247 131797 719.47 656 650 182.3
D 2 62 939252 4979.22 661 637 188.5
D 3 12 606406 3213.52 661 637 188.5
D 8 176 247733 1310.81 661 637 188.5

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