ASTROSAT CZTI

Data Quality Report

Orbit 20220822_A10_094T24_9000005306_level2

Creation date: 2026-01-04T23:26:17.919837
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/AS1A10_094T24_9000005306cztM0_level2.fits modeM0/AS1A10_094T24_9000005306cztM0_level2_quad_clean.evt
Size (bytes)35,896,32023,425,920
Size34.2 MB 22.3 MB
Events in quadrant A215,192113,392
Events in quadrant B206,234113,350
Events in quadrant C211,822110,260
Events in quadrant D182,47899,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081710
B081790
C081780
D0106430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3839210.547017%
B3839150.390727%
C3839431.120083%
D38392125.522271%

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 3838 3838 0 0 0.00% 0.00%
B 3838 3838 0 0 0.00% 0.00%
C 3838 3838 0 0 0.00% 0.00%
D 3838 3838 0 0 0.00% 0.00%

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 7 110 184 8.45 56 53 15.5
A 0 29 179 8.13 56 53 15.5
A 9 19 173 7.74 56 53 15.5
B 3 80 169 8.99 54 52 13.0
B 2 9 159 8.22 54 52 13.0
B 14 254 142 6.91 54 52 13.0
C 3 203 201 9.24 56 53 16.0
C 3 202 187 8.37 56 53 16.0
C 1 81 183 8.12 56 53 16.0
D 6 232 142 6.03 52 47 15.8
D 15 63 138 5.77 52 47 15.8
D 10 113 134 5.52 52 47 15.8

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