ASTROSAT CZTI

Data Quality Report

Orbit 12868

Creation date: 2024-06-27T16:33:19.567609
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/AS1A04_048T01_9000001890_12868cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12868cztM0_level2_quad_clean.evt
Size (bytes)250,824,96021,271,680
Size239.2 MB 20.3 MB
Events in quadrant A1,510,049117,979
Events in quadrant B2,341,926105,659
Events in quadrant C1,444,181115,420
Events in quadrant D2,107,479103,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061581
B089041
C059861
D080611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281250.177809%
B281230510.846373%
C281270.248933%
D28121997.076814%

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 2813 2813 0 0 0.00% 0.00%
B 2813 2813 191 191 6.79% 6.79%
C 2813 2813 1 1 0.04% 0.04%
D 2813 2813 189 189 6.72% 6.72%

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 15 174 10748 133.92 386 379 77.4
A 8 15 9007 111.43 386 379 77.4
A 0 226 3747 43.5 386 379 77.4
B 4 239 649529 9750.12 357 351 66.6
B 0 85 174445 2614.75 357 351 66.6
B 3 64 37637 560.01 357 351 66.6
C 14 234 5379 59.46 368 371 84.2
C 4 112 3765 40.3 368 371 84.2
C 13 61 2695 27.59 368 371 84.2
D 1 52 715424 8201.98 361 351 87.2
D 2 234 9026 99.5 361 351 87.2
D 13 122 7712 84.43 361 351 87.2

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