ASTROSAT CZTI

Data Quality Report

Orbit 20240225_A13_054T01_9000006098_level2

Creation date: 2024-02-27T19:36:35.737758
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_054T01_9000006098cztM0_level2.fits modeM0/AS1A13_054T01_9000006098cztM0_level2_quad_clean.evt
Size (bytes)915,024,960946,342,080
Size872.6 MB 902.5 MB
Events in quadrant A5,391,9975,581,253
Events in quadrant B5,271,2465,777,761
Events in quadrant C5,535,7435,535,399
Events in quadrant D4,590,7344,850,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03221100
B02307340
C02187990
D02906370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020540
B020560
C020540
D020510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10087728322.807379%
B10094937873.751399%
C10094615001.485943%
D10085452245.179765%

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 135440 101042 0 0 0.00% 0.00%
B 135440 100892 0 0 0.00% 0.00%
C 135440 101062 0 0 0.00% 0.00%
D 135440 100878 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 4564 9.15 1406 1311 355.3
A 15 236 4334 8.51 1406 1311 355.3
A 14 95 4105 7.86 1406 1311 355.3
B 2 9 4886 13.22 1391 1324 269.4
B 2 8 3983 9.87 1391 1324 269.4
B 3 17 3906 9.58 1391 1324 269.4
C 1 81 4147 7.35 1464 1359 379.3
C 3 202 4105 7.24 1464 1359 379.3
C 1 80 4046 7.08 1464 1359 379.3
D 10 189 3451 6.11 1322 1202 368.0
D 12 6 3342 5.81 1322 1202 368.0
D 7 3 3288 5.67 1322 1202 368.0

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