ASTROSAT CZTI

Data Quality Report

Orbit 50970

Creation date: 2025-03-01T15:16:51.203522
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_001T02_9000006452_50970cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50970cztM0_level2_quad_clean.evt
Size (bytes)724,645,44078,828,480
Size691.1 MB 75.2 MB
Events in quadrant A6,890,153484,784
Events in quadrant B3,378,349639,462
Events in quadrant C4,936,371537,491
Events in quadrant D11,131,991285,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01333
B01342
C01335
D01322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025529695
B015130565
C019631546
D0404253106

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6325131220.743083%
B63211181.866793%
C63294867.678938%
D6161307149.845804%

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 7632 6428 1185 1185 15.53% 18.43%
B 7632 6426 48 48 0.63% 0.75%
C 7632 6424 433 433 5.67% 6.74%
D 7631 6199 2844 2844 37.27% 45.88%

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 14 254 1682015 11331.29 587 573 148.4
A 4 249 1238957 8345.51 587 573 148.4
A 12 80 847938 5710.42 587 573 148.4
B 4 206 172207 1240.57 650 629 138.3
B 8 128 127813 919.58 650 629 138.3
B 4 81 113629 817.03 650 629 138.3
C 15 147 1049822 6150.12 621 617 170.6
C 4 12 405355 2372.45 621 617 170.6
C 12 247 140859 822.06 621 617 170.6
D 8 176 8633899 65791.21 454 437 131.2
D 10 181 338912 2579.35 454 437 131.2
D 2 249 123089 934.67 454 437 131.2

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