ASTROSAT CZTI

Data Quality Report

Orbit 34524

Creation date: 2022-02-15T19:53:24.369134
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/AS1A06_005T01_9000004932_34524cztM0_level2.evt modeM0/AS1A06_005T01_9000004932_34524cztM0_level2_quad_clean.evt
Size (bytes)478,728,00076,184,640
Size456.6 MB 72.7 MB
Events in quadrant A2,704,378501,748
Events in quadrant B3,724,052493,293
Events in quadrant C2,966,942493,193
Events in quadrant D4,750,142453,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111593
B0143822
C0120492
D0177522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5205150.288184%
B52053296.320845%
C5205240.461095%
D52053025.802113%

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 7358 5206 2 2 0.03% 0.04%
B 7358 5206 223 223 3.03% 4.28%
C 7358 5206 14 14 0.19% 0.27%
D 7358 5206 254 254 3.45% 4.88%

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 38494 279.57 678 667 135.3
A 9 143 18943 135.07 678 667 135.3
A 14 234 12659 88.63 678 667 135.3
B 5 172 601278 4964.11 653 639 121.0
B 5 236 178027 1466.06 653 639 121.0
B 4 170 155637 1281.01 653 639 121.0
C 15 214 235234 1584.35 649 656 148.1
C 14 67 114571 769.39 649 656 148.1
C 0 10 74677 499.94 649 656 148.1
D 8 195 766246 4864.44 641 625 157.4
D 7 223 551908 3502.62 641 625 157.4
D 7 80 207691 1315.61 641 625 157.4

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