ASTROSAT CZTI

Data Quality Report

Orbit 15061

Creation date: 2024-06-27T17:03:12.579040
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/AS1T02_060T01_9000002216_15061cztM0_level2.evt modeM0/AS1T02_060T01_9000002216_15061cztM0_level2_quad_clean.evt
Size (bytes)835,496,640171,144,000
Size796.8 MB 163.2 MB
Events in quadrant A6,109,2421,103,270
Events in quadrant B6,292,3081,116,400
Events in quadrant C6,500,2421,081,406
Events in quadrant D5,581,2861,045,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257853
B0265262
C0265762
D0250242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121101481.222130%
B121103022.493807%
C121101030.850537%
D121101090.900083%

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 13421 12111 1 1 0.01% 0.01%
B 13421 12111 100 100 0.75% 0.83%
C 13421 12111 0 0 0.00% 0.00%
D 13421 12111 11 11 0.08% 0.09%

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 1 162 195578 662.26 1458 1427 293.2
A 1 178 88298 296.32 1458 1427 293.2
A 1 161 78007 261.22 1458 1427 293.2
B 3 64 522228 1875.03 1447 1411 277.8
B 4 173 37190 128.81 1447 1411 277.8
B 10 245 34875 120.48 1447 1411 277.8
C 3 233 959439 2920.18 1418 1426 328.1
C 13 61 10153 26.6 1418 1426 328.1
C 3 232 7680 19.06 1418 1426 328.1
D 13 249 131295 378.22 1420 1378 343.5
D 2 234 41555 116.96 1420 1378 343.5
D 2 152 32243 89.86 1420 1378 343.5

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