ASTROSAT CZTI

Data Quality Report

Orbit 40574

Creation date: 2024-06-27T22:17:45.072347
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_054T02_9000005550_40574cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40574cztM0_level2_quad_clean.evt
Size (bytes)515,442,24077,342,400
Size491.6 MB 73.8 MB
Events in quadrant A2,805,136598,807
Events in quadrant B5,622,980501,190
Events in quadrant C2,580,496587,683
Events in quadrant D7,654,399278,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115633
B0202462
C0110772
D0265612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535490.168099%
B5354112521.012327%
C5354210.392230%
D5354271750.747105%

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 7207 5355 2 2 0.03% 0.04%
B 7207 5355 965 965 13.39% 18.02%
C 7207 5355 15 15 0.21% 0.28%
D 7207 5354 1979 1979 27.46% 36.96%

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 486472 4018.38 589 579 120.9
A 15 191 22997 185.4 589 579 120.9
A 12 189 19548 156.88 589 579 120.9
B 3 112 3186199 30572.75 539 524 104.2
B 0 190 203318 1946.2 539 524 104.2
B 0 230 51648 490.63 539 524 104.2
C 15 214 235577 1756.86 571 574 133.8
C 0 10 70442 522.33 571 574 133.8
C 14 254 42211 311.27 571 574 133.8
D 12 227 5747064 57589.05 399 389 99.8
D 12 191 145615 1455.35 399 389 99.8
D 2 250 92688 924.95 399 389 99.8

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