ASTROSAT CZTI

Data Quality Report

Orbit 53978

Creation date: 2025-09-20T02:12:13.372527
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/AS1A14_041T01_9000006510_53978cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53978cztM0_level2_quad_clean.evt
Size (bytes)632,678,40085,651,200
Size603.4 MB 81.7 MB
Events in quadrant A3,129,570627,648
Events in quadrant B4,573,516652,642
Events in quadrant C3,834,957602,588
Events in quadrant D11,397,724275,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138791
B0181023
C0156721
D0382031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62351041.668003%
B62354547.281476%
C62351382.213312%
D6235335453.793103%

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 7435 6236 63 63 0.85% 1.01%
B 7435 6236 278 278 3.74% 4.46%
C 7435 6236 97 97 1.30% 1.56%
D 7434 6235 3094 3094 41.62% 49.62%

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 15 174 310954 1848.66 672 655 167.9
A 4 249 37125 217.28 672 655 167.9
A 3 78 31130 181.56 672 655 167.9
B 0 155 1164588 8316.88 662 639 140.0
B 5 250 483946 3453.42 662 639 140.0
B 0 213 182941 1302.62 662 639 140.0
C 9 53 430843 2347.28 663 659 183.3
C 1 241 247459 1346.65 663 659 183.3
C 12 249 134706 731.42 663 659 183.3
D 8 176 6595073 49968.1 461 440 132.0
D 5 113 1534310 11622.26 461 440 132.0
D 13 46 586177 4438.18 461 440 132.0

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