ASTROSAT CZTI

Data Quality Report

Orbit 31341

Creation date: 2024-06-27T20:27:00.075951
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/AS1A10_053T31_9000004540_31341cztM0_level2.evt modeM0/AS1A10_053T31_9000004540_31341cztM0_level2_quad_clean.evt
Size (bytes)667,307,52077,368,320
Size636.4 MB 73.8 MB
Events in quadrant A3,558,893483,047
Events in quadrant B5,728,113475,689
Events in quadrant C4,463,253444,456
Events in quadrant D5,989,027454,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145622
B0218562
C0177302
D0224513

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69621121.608733%
B69622403.447285%
C69624045.802930%
D69616509.337739%

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 7832 6963 0 0 0.00% 0.00%
B 7832 6963 14 14 0.18% 0.20%
C 7832 6963 42 42 0.54% 0.60%
D 7831 6962 474 474 6.05% 6.81%

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 12778 63.98 921 903 185.6
A 3 137 9098 44.15 921 903 185.6
A 0 226 7963 38.04 921 903 185.6
B 6 159 1889456 10914.16 896 873 173.0
B 0 190 162289 932.83 896 873 173.0
B 4 80 62925 358.6 896 873 173.0
C 3 233 542251 2704.46 853 860 200.2
C 0 10 226520 1127.26 853 860 200.2
C 14 238 217280 1081.1 853 860 200.2
D 12 233 1382627 6633.25 866 843 208.3
D 8 195 1275505 6119.01 866 843 208.3
D 2 234 27973 130.24 866 843 208.3

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