ASTROSAT CZTI

Data Quality Report

Orbit 23594

Creation date: 2024-06-27T18:56:35.258139
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_054T01_9000003486_23594cztM0_level2.evt modeM0/AS1A07_054T01_9000003486_23594cztM0_level2_quad_clean.evt
Size (bytes)1,383,966,720379,350,720
Size1.3 GB 361.8 MB
Events in quadrant A8,917,2142,627,468
Events in quadrant B10,756,0532,647,058
Events in quadrant C9,470,6212,506,576
Events in quadrant D11,513,6722,428,747

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383914
B0439864
C0401594
D0464914

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18596510.274253%
B185976573.532828%
C185974142.226166%
D185972601.398075%

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 23662 18600 0 0 0.00% 0.00%
B 23663 18600 451 451 1.91% 2.42%
C 23663 18600 171 171 0.72% 0.92%
D 23663 18601 147 147 0.62% 0.79%

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 6 16 44456 93.22 2299 2254 452.7
A 13 254 32154 66.05 2299 2254 452.7
A 0 226 19759 38.67 2299 2254 452.7
B 3 64 1323509 3187.08 2268 2215 414.6
B 0 189 387761 929.97 2268 2215 414.6
B 0 230 52014 120.12 2268 2215 414.6
C 0 10 590092 1187.37 2162 2173 495.1
C 14 238 354278 711.12 2162 2173 495.1
C 7 247 46664 89.85 2162 2173 495.1
D 1 52 1573349 2978.52 2189 2122 527.5
D 7 223 1053831 1993.69 2189 2122 527.5
D 9 85 234510 440.53 2189 2122 527.5

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