ASTROSAT CZTI

Data Quality Report

Orbit 12187

Creation date: 2024-06-27T16:23:33.617486
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/AS1A04_160T01_9000001798_12187cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12187cztM0_level2_quad_clean.evt
Size (bytes)529,056,000127,742,400
Size504.5 MB 121.8 MB
Events in quadrant A3,426,058898,654
Events in quadrant B5,729,137806,932
Events in quadrant C3,123,401885,324
Events in quadrant D3,328,935850,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139732
B0213191
C0132541
D0138701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61221292.107155%
B6122112018.294675%
C61221151.878471%
D61221211.976478%

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 7438 6124 6 6 0.08% 0.10%
B 7438 6124 620 620 8.34% 10.12%
C 7438 6124 20 20 0.27% 0.33%
D 7438 6124 40 40 0.54% 0.65%

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 86984 544.95 789 776 158.2
A 9 143 58725 366.31 789 776 158.2
A 13 248 41636 258.29 789 776 158.2
B 4 239 2429514 18817.39 706 692 129.1
B 10 16 172342 1329.86 706 692 129.1
B 11 51 168946 1303.55 706 692 129.1
C 15 208 154616 916.57 751 756 167.9
C 4 175 17032 96.96 751 756 167.9
C 0 207 15446 87.51 751 756 167.9
D 1 52 217791 1224.0 758 738 177.3
D 10 199 63360 353.14 758 738 177.3
D 10 50 36542 201.91 758 738 177.3

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