ASTROSAT CZTI

Data Quality Report

Orbit 51848

Creation date: 2025-04-29T17:47:21.424059
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/AS1C09_011T05_9000006466_51848cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51848cztM0_level2_quad_clean.evt
Size (bytes)985,970,88083,390,400
Size940.3 MB 79.5 MB
Events in quadrant A4,257,033676,768
Events in quadrant B6,890,932685,438
Events in quadrant C6,163,590586,420
Events in quadrant D18,611,38959,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01776314
B02563324
C02356734
D060492142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74281171.575121%
B74227339.876044%
C741987311.767085%
D7413679891.703764%

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 7432 7431 102 102 1.37% 1.37%
B 7432 7428 578 578 7.78% 7.78%
C 7431 7425 793 793 10.67% 10.68%
D 7429 7416 6673 6673 89.82% 89.98%

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 8 246 192557 1012.39 765 746 189.5
A 5 240 190643 1002.29 765 746 189.5
A 12 3 171886 903.29 765 746 189.5
B 1 255 790583 4989.32 734 710 158.3
B 5 32 566805 3575.8 734 710 158.3
B 1 207 544057 3432.11 734 710 158.3
C 0 193 1277990 6600.37 699 691 193.5
C 10 19 358147 1847.13 699 691 193.5
C 15 230 313084 1614.27 699 691 193.5
D 11 129 16309914 187214.26 298 286 87.1
D 3 12 482589 5536.24 298 286 87.1
D 0 18 144655 1657.18 298 286 87.1

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