ASTROSAT CZTI

Data Quality Report

Orbit 56498

Creation date: 2026-03-08T16:57:50.250223
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_060T01_9000006556_56498cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56498cztM0_level2_quad_clean.evt
Size (bytes)492,886,080114,408,000
Size470.1 MB 109.1 MB
Events in quadrant A4,768,071738,850
Events in quadrant B4,568,895795,849
Events in quadrant C4,111,506710,535
Events in quadrant D4,181,763668,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193230
B0190090
C0179300
D0178180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7916410.517938%
B79151932.438408%
C79161341.692774%
D7916400.505306%

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 7916 7916 39 39 0.49% 0.49%
B 7915 7915 111 111 1.40% 1.40%
C 7916 7916 91 91 1.15% 1.15%
D 7916 7916 38 38 0.48% 0.48%

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 877385 4073.14 866 843 215.2
A 0 8 129273 596.79 866 843 215.2
A 8 249 103052 474.95 866 843 215.2
B 4 206 768645 4167.05 855 820 184.3
B 0 213 67703 362.98 855 820 184.3
B 10 247 65514 351.1 855 820 184.3
C 15 230 270278 1169.68 841 832 230.4
C 6 223 189721 819.98 841 832 230.4
C 12 252 106834 460.16 841 832 230.4
D 2 249 339104 1424.73 841 803 237.4
D 3 12 154799 648.54 841 803 237.4
D 5 173 86950 362.8 841 803 237.4

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