ASTROSAT CZTI

Data Quality Report

Orbit 38475

Creation date: 2024-06-27T21:53:15.328181
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/AS1A12_018T01_9000005386_38475cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38475cztM0_level2_quad_clean.evt
Size (bytes)371,108,16093,041,280
Size353.9 MB 88.7 MB
Events in quadrant A2,825,488664,590
Events in quadrant B4,467,835612,583
Events in quadrant C2,557,517620,627
Events in quadrant D3,490,055562,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113913
B0166522
C0105322
D0136142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5092160.314218%
B509259511.684996%
C509260.117832%
D50922364.634721%

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 7065 5093 2 2 0.03% 0.04%
B 7065 5093 444 444 6.28% 8.72%
C 7065 5093 4 4 0.06% 0.08%
D 7065 5093 198 198 2.80% 3.89%

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 382635 3136.92 609 599 121.8
A 13 248 33708 271.86 609 599 121.8
A 12 189 31780 256.03 609 599 121.8
B 8 3 1852059 17167.82 572 559 107.8
B 4 232 195952 1811.76 572 559 107.8
B 5 200 51440 471.79 572 559 107.8
C 15 214 214670 1617.7 577 579 132.3
C 14 254 49838 372.21 577 579 132.3
C 0 10 21254 156.22 577 579 132.3
D 13 249 379362 2753.38 577 563 137.6
D 12 233 266611 1933.82 577 563 137.6
D 2 250 217981 1580.35 577 563 137.6

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