ASTROSAT CZTI

Data Quality Report

Orbit 43218

Creation date: 2024-06-27T22:49:26.574517
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/AS1A09_036T17_9000005858_43218cztM0_level2.fits modeM0/AS1A09_036T17_9000005858_43218cztM0_level2_quad_clean.evt
Size (bytes)421,450,56092,972,160
Size401.9 MB 88.7 MB
Events in quadrant A4,750,182584,096
Events in quadrant B2,889,404647,802
Events in quadrant C2,830,462624,354
Events in quadrant D4,665,389541,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178032
B0128382
C0122982
D0180473

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59795629.399565%
B5979611.020237%
C5979140.234153%
D59785679.484778%

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 7322 5980 468 468 6.39% 7.83%
B 7322 5980 56 56 0.76% 0.94%
C 7322 5980 9 9 0.12% 0.15%
D 7321 5979 507 507 6.93% 8.48%

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 15 237 1364699 10632.63 617 603 128.3
A 10 83 663625 5168.01 617 603 128.3
A 13 248 202821 1576.22 617 603 128.3
B 5 172 178979 1420.84 640 621 125.5
B 0 186 95650 757.02 640 621 125.5
B 0 189 60795 479.36 640 621 125.5
C 15 214 251874 1702.73 628 633 147.6
C 14 254 103849 699.52 628 633 147.6
C 7 220 23337 153.87 628 633 147.6
D 1 52 1446256 9614.55 605 589 150.4
D 13 249 305738 2029.42 605 589 150.4
D 1 47 176542 1170.19 605 589 150.4

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