ASTROSAT CZTI

Data Quality Report

Orbit 45662

Creation date: 2024-06-27T23:14:42.556399
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/AS1A13_071T07_9000006116_45662cztM0_level2.fits modeM0/AS1A13_071T07_9000006116_45662cztM0_level2_quad_clean.evt
Size (bytes)553,639,680101,165,760
Size528.0 MB 96.5 MB
Events in quadrant A5,275,722707,750
Events in quadrant B3,278,689727,742
Events in quadrant C7,351,632585,762
Events in quadrant D4,131,099630,045

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190641
B0134101
C0257901
D0162911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58951933.273961%
B58961672.832429%
C5896126021.370421%
D58952313.918575%

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 7095 5895 10 10 0.14% 0.17%
B 7096 5897 75 75 1.06% 1.27%
C 7096 5897 1377 1377 19.41% 23.35%
D 7095 5896 159 159 2.24% 2.70%

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 10 83 2529064 17703.41 693 679 142.8
A 10 248 28161 192.43 693 679 142.8
A 13 248 25795 175.86 693 679 142.8
B 5 32 130586 992.7 686 666 130.9
B 5 172 84589 641.25 686 666 130.9
B 3 112 83374 631.96 686 666 130.9
C 9 54 4640199 30838.12 649 651 150.4
C 2 14 93294 615.78 649 651 150.4
C 0 64 36082 235.5 649 651 150.4
D 13 249 596485 3549.96 677 656 167.8
D 1 52 477422 2840.58 677 656 167.8
D 5 222 221822 1317.71 677 656 167.8

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