ASTROSAT CZTI

Data Quality Report

Orbit 54606

Creation date: 2025-11-01T09:19:25.935895
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_066T07_9000006522_54606cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54606cztM0_level2_quad_clean.evt
Size (bytes)607,536,00096,984,000
Size579.4 MB 92.5 MB
Events in quadrant A9,422,974569,582
Events in quadrant B3,420,627708,445
Events in quadrant C4,537,729607,437
Events in quadrant D4,568,336566,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327912
B0153802
C0184292
D0187982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6955144820.819554%
B69551321.897915%
C69553815.478073%
D69554186.010065%

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 7645 6956 1286 1286 16.82% 18.49%
B 7645 6956 37 37 0.48% 0.53%
C 7645 6956 321 321 4.20% 4.61%
D 7645 6956 326 326 4.26% 4.69%

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 3 14 5767558 33196.38 698 681 173.7
A 11 3 416960 2396.26 698 681 173.7
A 0 8 251636 1444.59 698 681 173.7
B 5 172 131538 812.03 746 718 161.1
B 6 255 113974 703.01 746 718 161.1
B 10 247 100834 621.45 746 718 161.1
C 6 223 942118 4729.63 723 719 199.0
C 4 5 379106 1901.03 723 719 199.0
C 13 3 125332 626.06 723 719 199.0
D 12 33 1157456 5653.9 713 681 204.6
D 8 240 154147 750.09 713 681 204.6
D 8 160 108949 529.17 713 681 204.6

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