ASTROSAT CZTI

Data Quality Report

Orbit 41665

Creation date: 2024-06-27T22:31:17.845393
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/AS1T05_116T01_9000005682_41665cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41665cztM0_level2_quad_clean.evt
Size (bytes)331,139,52080,873,280
Size315.8 MB 77.1 MB
Events in quadrant A2,583,047556,576
Events in quadrant B2,206,983568,901
Events in quadrant C2,762,371532,530
Events in quadrant D4,322,923446,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107012
B0100792
C0113442
D0163472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4899110.224536%
B4899100.204123%
C48991943.959992%
D489972414.778526%

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 6962 4900 4 4 0.06% 0.08%
B 6962 4900 1 1 0.01% 0.02%
C 6962 4900 191 191 2.74% 3.90%
D 6962 4899 683 683 9.81% 13.94%

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 516385 4752.88 529 518 108.5
A 13 6 7729 66.44 529 518 108.5
A 13 254 7089 60.54 529 518 108.5
B 0 190 73209 724.04 527 513 100.4
B 0 186 25696 250.82 527 513 100.4
B 0 245 22813 222.1 527 513 100.4
C 0 10 507811 4287.29 510 513 118.3
C 15 214 195408 1647.1 510 513 118.3
C 14 254 32583 271.03 510 513 118.3
D 13 249 2079119 17771.82 483 469 117.0
D 2 249 256125 2185.78 483 469 117.0
D 12 218 35265 297.5 483 469 117.0

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