ASTROSAT CZTI

Data Quality Report

Orbit 54970

Creation date: 2025-11-25T21:27:48.762475
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_014T01_9000006528_54970cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54970cztM0_level2_quad_clean.evt
Size (bytes)834,721,92093,499,200
Size796.1 MB 89.2 MB
Events in quadrant A5,691,774648,587
Events in quadrant B3,535,040755,042
Events in quadrant C5,273,601627,654
Events in quadrant D15,804,070266,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222030
B0161690
C0211890
D0522450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A765795612.485308%
B76582993.904414%
C765882310.746931%
D7658480262.705667%

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 7657 7657 634 634 8.28% 8.28%
B 7658 7658 6 6 0.08% 0.08%
C 7658 7658 387 387 5.05% 5.05%
D 7658 7657 4414 4414 57.64% 57.65%

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 32 1990686 9734.07 833 808 204.4
A 3 14 283287 1381.83 833 808 204.4
A 0 8 76274 369.16 833 808 204.4
B 5 185 42535 226.1 853 821 184.5
B 10 247 28758 151.42 853 821 184.5
B 2 249 26102 137.03 853 821 184.5
C 4 5 1280357 5777.72 815 807 221.5
C 12 252 471306 2124.5 815 807 221.5
C 1 16 91768 410.73 815 807 221.5
D 15 94 12397269 75122.1 584 558 165.0
D 2 249 327601 1981.83 584 558 165.0
D 3 12 248503 1502.51 584 558 165.0

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