ASTROSAT CZTI

Data Quality Report

Orbit 53930

Creation date: 2025-09-16T22:10:13.732672
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_057T04_9000006508_53930cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53930cztM0_level2_quad_clean.evt
Size (bytes)1,197,498,240127,399,680
Size1.1 GB 121.5 MB
Events in quadrant A6,032,600979,727
Events in quadrant B5,791,0101,034,255
Events in quadrant C13,830,135635,037
Events in quadrant D17,867,901486,286

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253192
B0246593
C0483092
D0602402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104173263.129500%
B104172822.707113%
C10417353433.925314%
D10417523050.206393%

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 11951 10416 272 272 2.28% 2.61%
B 11951 10416 151 151 1.26% 1.45%
C 11951 10416 3538 3538 29.60% 33.97%
D 11951 10417 4715 4715 39.45% 45.26%

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 8 751856 2791.03 1104 1078 269.0
A 15 174 363253 1346.39 1104 1078 269.0
A 3 45 195141 721.43 1104 1078 269.0
B 0 213 861866 3655.91 1098 1057 235.5
B 5 185 136754 576.31 1098 1057 235.5
B 7 252 106516 447.89 1098 1057 235.5
C 1 241 9629263 38617.56 901 892 249.3
C 12 252 252015 1007.21 901 892 249.3
C 14 254 108164 430.25 901 892 249.3
D 8 176 9419665 40728.31 793 756 231.3
D 6 239 2264996 9790.8 793 756 231.3
D 10 172 1157632 5002.45 793 756 231.3

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