ASTROSAT CZTI

Data Quality Report

Orbit 25002

Creation date: 2024-06-27T19:12:35.271024
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/AS1A07_127T03_9000003662_25002cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_25002cztM0_level2_quad_clean.evt
Size (bytes)535,524,480110,384,640
Size510.7 MB 105.3 MB
Events in quadrant A3,734,926704,443
Events in quadrant B3,787,886722,777
Events in quadrant C3,782,620695,376
Events in quadrant D4,386,586681,343

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161060
B0162110
C0161210
D0181920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77452813.628147%
B77462973.834237%
C77462933.782597%
D77462503.227472%

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 7745 7745 0 0 0.00% 0.00%
B 7746 7746 0 0 0.00% 0.00%
C 7746 7746 0 0 0.00% 0.00%
D 7746 7746 3 3 0.04% 0.04%

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 13 254 12610 59.16 966 942 197.2
A 3 137 9061 41.16 966 942 197.2
A 0 226 8171 36.65 966 942 197.2
B 12 111 23211 119.34 958 930 186.7
B 11 111 21179 108.46 958 930 186.7
B 14 111 18629 94.8 958 930 186.7
C 14 238 145631 658.87 930 935 219.6
C 7 247 12286 51.69 930 935 219.6
C 13 61 6358 24.69 930 935 219.6
D 8 195 622271 2676.75 950 922 232.1
D 7 238 133697 571.99 950 922 232.1
D 2 234 33061 138.45 950 922 232.1

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