ASTROSAT CZTI

Data Quality Report

Orbit 20240814_A13_053T01_9000006388_level2

Creation date: 2024-08-20T13:12:20.942786
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/AS1A13_053T01_9000006388cztM0_level2.fits modeM0/AS1A13_053T01_9000006388cztM0_level2_quad_clean.evt
Size (bytes)844,418,8801,075,587,840
Size805.3 MB 1.0 GB
Events in quadrant A4,802,5546,554,257
Events in quadrant B4,790,0086,786,606
Events in quadrant C4,973,6166,547,577
Events in quadrant D4,255,2465,941,278

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0880
C0860
D0850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019940
B019940
C019920
D019900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03656550
B02110880
C02090270
D02281120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9838739964.061512%
B9846019121.941905%
C9848312571.276362%
D9844823682.405331%

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 118407 98512 0 0 0.00% 0.00%
B 118407 98565 0 0 0.00% 0.00%
C 118407 98581 0 0 0.00% 0.00%
D 118407 98529 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 3904 8.39 1252 1168 326.0
A 14 95 3650 7.61 1252 1168 326.0
A 7 30 3551 7.31 1252 1168 326.0
B 2 9 4593 13.63 1264 1198 249.0
B 2 8 3635 9.79 1264 1198 249.0
B 3 17 3451 9.05 1264 1198 249.0
C 3 202 3773 7.46 1315 1218 342.6
C 1 81 3687 7.21 1315 1218 342.6
C 1 80 3674 7.17 1315 1218 342.6
D 15 47 3166 6.05 1221 1105 340.9
D 10 189 3155 6.01 1221 1105 340.9
D 3 31 3129 5.94 1221 1105 340.9

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