ASTROSAT CZTI

Data Quality Report

Orbit 06642

Creation date: 2024-06-27T15:09:46.457189
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/AS1A02_189T01_9000000902_06642cztM0_level2.evt modeM0/AS1A02_189T01_9000000902_06642cztM0_level2_quad_clean.evt
Size (bytes)539,573,760102,605,760
Size514.6 MB 97.9 MB
Events in quadrant A4,001,431690,964
Events in quadrant B4,707,655666,530
Events in quadrant C2,543,637701,918
Events in quadrant D4,701,894648,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159252
B0179471
C0116651
D0179721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57042694.715989%
B570479013.849930%
C5704230.403226%
D57042654.645863%

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 6999 5705 157 157 2.24% 2.75%
B 6999 5705 586 586 8.37% 10.27%
C 6999 5705 0 0 0.00% 0.00%
D 6999 5705 227 227 3.24% 3.98%

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 15 239 1271026 9646.96 659 647 131.7
A 8 15 164888 1247.21 659 647 131.7
A 13 248 14188 102.83 659 647 131.7
B 0 228 2094529 17449.0 641 625 120.0
B 4 170 54956 452.75 641 625 120.0
B 0 214 22516 182.42 641 625 120.0
C 13 61 5228 30.48 652 655 150.0
C 3 202 1677 6.81 652 655 150.0
C -1 -1 -1 -1.0 652 655 150.0
D 8 195 956963 6222.98 634 615 153.7
D 2 33 639849 4159.51 634 615 153.7
D 4 95 277106 1799.13 634 615 153.7

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