ASTROSAT CZTI

Data Quality Report

Orbit 50153

Creation date: 2025-01-05T14:41:46.300529
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_003T01_9000006442_50153cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50153cztM0_level2_quad_clean.evt
Size (bytes)3,754,900,800139,870,080
Size3.5 GB 133.4 MB
Events in quadrant A38,009,007679,651
Events in quadrant B13,343,9171,737,109
Events in quadrant C42,135,781277,870
Events in quadrant D44,074,402249,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01257422
B0524212
C01379707
D01437872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187051183963.293237%
B1870512786.832398%
C187041603285.714286%
D187041602185.655475%

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 19505 18705 10810 10810 55.42% 57.79%
B 19505 18707 880 880 4.51% 4.70%
C 19503 18703 14716 14716 75.46% 78.68%
D 19503 18703 15139 15139 77.62% 80.94%

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 0 98 16281541 44180.83 1450 1409 368.5
A 8 8 4414675 11976.67 1450 1409 368.5
A 4 4 3347887 9081.63 1450 1409 368.5
B 1 255 2237995 5490.54 1902 1833 407.3
B 5 185 701488 1717.89 1902 1833 407.3
B 4 206 392602 959.47 1902 1833 407.3
C 4 111 10640674 39992.6 910 904 266.0
C 15 164 4791908 18008.35 910 904 266.0
C 15 147 3713873 13956.25 910 904 266.0
D 15 168 10532761 34986.2 894 853 301.0
D 7 61 4068224 13511.5 894 853 301.0
D 15 142 4028356 13379.06 894 853 301.0

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