ASTROSAT CZTI

Data Quality Report

Orbit 32780

Creation date: 2024-06-27T20:41:55.732792
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/AS1T04_064T01_9000004730_32780cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32780cztM0_level2_quad_clean.evt
Size (bytes)1,782,956,160165,130,560
Size1.7 GB 157.5 MB
Events in quadrant A10,891,280976,056
Events in quadrant B9,443,0511,081,443
Events in quadrant C9,452,0421,047,350
Events in quadrant D23,194,927849,136

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423813
B0379152
C0380392
D0795312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1514314089.298025%
B151432691.776398%
C151434963.275441%
D15143388325.642211%

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 19324 15145 943 943 4.88% 6.23%
B 19324 15146 190 190 0.98% 1.25%
C 19323 15145 383 383 1.98% 2.53%
D 19324 15146 3842 3842 19.88% 25.37%

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 3776445 11141.86 1690 1657 338.8
A 12 16 304117 892.76 1690 1657 338.8
A 7 16 110413 321.01 1690 1657 338.8
B 5 172 819652 2395.57 1790 1752 341.4
B 0 219 731531 2137.47 1790 1752 341.4
B 0 189 181810 527.38 1790 1752 341.4
C 0 10 1295029 3284.88 1700 1717 393.7
C 7 221 613079 1552.8 1700 1717 393.7
C 4 254 469775 1188.82 1700 1717 393.7
D 8 195 8023785 19965.13 1557 1527 401.8
D 12 227 3195186 7948.11 1557 1527 401.8
D 2 250 2488264 6188.78 1557 1527 401.8

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