ASTROSAT CZTI

Data Quality Report

Orbit 51190

Creation date: 2025-03-17T09:25:53.665591
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/AS1C07_001T01_9000006454_51190cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51190cztM0_level2_quad_clean.evt
Size (bytes)752,906,88087,036,480
Size718.0 MB 83.0 MB
Events in quadrant A4,279,469643,570
Events in quadrant B4,265,830709,626
Events in quadrant C14,918,855220,650
Events in quadrant D3,881,252590,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173422
B0173802
C0486982
D0165852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67621412.085182%
B67631612.380600%
C6763475770.338607%
D67631512.232737%

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 9073 6764 86 86 0.95% 1.27%
B 9074 6765 70 70 0.77% 1.03%
C 9074 6765 4283 4283 47.20% 63.31%
D 9074 6765 112 112 1.23% 1.66%

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 12 3 277457 1591.31 701 684 173.9
A 9 160 243878 1398.25 701 684 173.9
A 14 254 237831 1363.48 701 684 173.9
B 8 128 356099 2375.96 706 684 149.6
B 10 60 217785 1451.33 706 684 149.6
B 10 254 175558 1169.04 706 684 149.6
C 4 12 11511324 111516.41 373 371 103.2
C 12 247 1286721 12461.97 373 371 103.2
C 13 3 88062 849.54 373 371 103.2
D 10 172 159064 836.61 673 650 189.4
D 2 216 156775 824.52 673 650 189.4
D 11 176 149755 787.45 673 650 189.4

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