ASTROSAT CZTI

Data Quality Report

Orbit 20240806_A09_038T41_9000006376_level2

Creation date: 2024-08-10T09:46:43.614549
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/AS1A09_038T41_9000006376cztM0_level2.fits modeM0/AS1A09_038T41_9000006376cztM0_level2_quad_clean.evt
Size (bytes)129,049,920183,896,640
Size123.1 MB 175.4 MB
Events in quadrant A715,6121,106,287
Events in quadrant B734,8381,199,232
Events in quadrant C763,7241,166,476
Events in quadrant D658,0521,061,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0583580
B0319120
C0304430
D0327730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1501112628.407168%
B150112281.518886%
C15011560.373060%
D150111751.165812%

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 17611 14993 0 0 0.00% 0.00%
B 17611 15010 0 0 0.00% 0.00%
C 17611 15011 0 0 0.00% 0.00%
D 17611 15011 0 0 0.00% 0.00%

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 7 110 635 9.19 187 175 50.1
A 14 95 542 7.33 187 175 50.1
A 0 29 517 6.83 187 175 50.1
B 2 9 697 12.48 194 184 41.1
B 2 8 563 9.22 194 184 41.1
B 3 17 535 8.54 194 184 41.1
C 3 202 635 8.28 201 188 54.0
C 3 203 583 7.32 201 188 54.0
C 1 80 577 7.21 201 188 54.0
D 15 47 531 6.59 188 170 54.8
D 10 113 497 5.97 188 170 54.8
D 7 3 495 5.93 188 170 54.8

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