ASTROSAT CZTI

Data Quality Report

Orbit 13549

Creation date: 2024-06-27T16:42:27.186742
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_038T01_9000001994_13549cztM0_level2.evt modeM0/AS1T02_038T01_9000001994_13549cztM0_level2_quad_clean.evt
Size (bytes)550,667,520101,764,800
Size525.2 MB 97.1 MB
Events in quadrant A3,961,873667,467
Events in quadrant B4,309,434662,710
Events in quadrant C3,773,091658,775
Events in quadrant D4,175,836623,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159023
B0171612
C0153982
D0165982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67361792.657363%
B67362784.127078%
C6736921.365796%
D67361362.019002%

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 7877 6737 32 32 0.41% 0.47%
B 7876 6736 100 100 1.27% 1.48%
C 7877 6737 4 4 0.05% 0.06%
D 7877 6737 30 30 0.38% 0.45%

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 14 238 244719 1229.69 954 941 198.2
A 1 162 24281 117.73 954 941 198.2
A 1 178 8368 37.46 954 941 198.2
B 3 64 252424 1385.51 933 916 181.5
B 0 182 203709 1117.15 933 916 181.5
B 4 142 94090 513.28 933 916 181.5
C 3 233 181276 846.5 917 927 213.1
C 12 4 11368 49.0 917 927 213.1
C 14 234 8291 34.56 917 927 213.1
D 13 122 255329 1130.49 918 897 225.1
D 8 195 193798 857.1 918 897 225.1
D 5 222 125894 555.38 918 897 225.1

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