ASTROSAT CZTI

Data Quality Report

Orbit 23273

Creation date: 2024-06-27T18:52:10.691019
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/AS1C05_005T01_9000003440_23273cztM0_level2.evt modeM0/AS1C05_005T01_9000003440_23273cztM0_level2_quad_clean.evt
Size (bytes)539,256,96075,507,840
Size514.3 MB 72.0 MB
Events in quadrant A3,325,726482,300
Events in quadrant B3,354,776487,488
Events in quadrant C3,332,191461,363
Events in quadrant D5,885,143408,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139622
B0140362
C0138352
D0219465

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6394911.423209%
B6395791.235340%
C6395951.485536%
D639472311.307476%

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 7569 6394 10 10 0.13% 0.16%
B 7570 6395 3 3 0.04% 0.05%
C 7570 6395 0 0 0.00% 0.00%
D 7569 6394 625 625 8.26% 9.77%

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 6 16 34116 196.87 854 837 169.0
A 13 254 10744 58.61 854 837 169.0
A 0 226 7545 39.68 854 837 169.0
B 12 111 18530 113.03 843 825 156.6
B 11 111 16293 98.75 843 825 156.6
B 0 190 15704 94.99 843 825 156.6
C 14 238 131048 702.77 808 814 185.3
C 0 207 18476 95.31 808 814 185.3
C 7 247 16702 85.74 808 814 185.3
D 1 52 1284382 6730.07 784 759 190.7
D 12 233 1232706 6459.13 784 759 190.7
D 7 238 268127 1401.82 784 759 190.7

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