ASTROSAT CZTI

Data Quality Report

Orbit 53609

Creation date: 2025-08-27T11:30:09.599979
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_004T05_9000006502_53609cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53609cztM0_level2_quad_clean.evt
Size (bytes)1,061,804,16088,617,600
Size1012.6 MB 84.5 MB
Events in quadrant A7,751,214623,197
Events in quadrant B6,870,587715,523
Events in quadrant C14,174,430333,554
Events in quadrant D9,919,020479,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282701
B0257151
C0473861
D0346842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7636126016.500786%
B76367259.494500%
C7636436657.176532%
D7636228129.871661%

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 7972 7637 1160 1160 14.55% 15.19%
B 7972 7637 547 547 6.86% 7.16%
C 7971 7635 3875 3875 48.61% 50.75%
D 7971 7636 2108 2108 26.45% 27.61%

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 78 3349859 17706.1 758 740 189.2
A 15 174 361894 1909.35 758 740 189.2
A 3 63 326330 1721.33 758 740 189.2
B 10 254 1700848 10153.26 784 758 167.4
B 10 28 1335435 7970.94 784 758 167.4
B 0 213 298860 1780.32 784 758 167.4
C 15 224 6922029 44178.31 557 552 156.7
C 12 254 1431177 9131.37 557 552 156.7
C 1 241 887250 5659.6 557 552 156.7
D 8 176 4801276 25860.91 636 608 185.6
D 12 2 985896 5307.69 636 608 185.6
D 3 12 320861 1725.18 636 608 185.6

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