ASTROSAT CZTI

Data Quality Report

Orbit 20194

Creation date: 2024-06-27T18:12:17.691194
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/AS1C04_001T01_9000002994_20194cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20194cztM0_level2_quad_clean.evt
Size (bytes)497,738,880129,680,640
Size474.7 MB 123.7 MB
Events in quadrant A3,152,698904,648
Events in quadrant B3,622,271894,690
Events in quadrant C3,185,635856,480
Events in quadrant D4,669,072815,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134261
B0148351
C0134491
D0181551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65441031.573961%
B65441722.628362%
C65441151.757335%
D65455538.449198%

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 7584 6545 2 2 0.03% 0.03%
B 7584 6545 40 40 0.53% 0.61%
C 7584 6545 0 0 0.00% 0.00%
D 7585 6546 350 350 4.61% 5.35%

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 4 2 18390 107.92 809 792 163.1
A 14 238 7966 43.99 809 792 163.1
A 0 226 7164 39.07 809 792 163.1
B 7 220 304529 2043.79 793 774 148.6
B 0 197 93712 625.32 793 774 148.6
B 0 190 53353 353.77 793 774 148.6
C 14 238 119992 678.68 765 768 175.7
C 3 233 76804 432.83 765 768 175.7
C 1 16 5751 28.37 765 768 175.7
D 9 1 879022 4790.91 758 734 183.3
D 11 176 437299 2381.39 758 734 183.3
D 7 238 118012 639.73 758 734 183.3

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