ASTROSAT CZTI

Data Quality Report

Orbit 12740

Creation date: 2024-06-27T16:31:47.899628
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/AS1G08_021T01_9000001880_12740cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12740cztM0_level2_quad_clean.evt
Size (bytes)603,270,720106,283,520
Size575.3 MB 101.4 MB
Events in quadrant A4,180,684697,275
Events in quadrant B5,553,375656,271
Events in quadrant C3,347,748689,566
Events in quadrant D4,674,393648,343

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176353
B0217292
C0154652
D0194942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75681031.360994%
B756893212.315011%
C7568230.303911%
D75683795.007928%

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 9364 7572 7 7 0.07% 0.09%
B 9364 7572 510 510 5.45% 6.74%
C 9364 7572 1 1 0.01% 0.01%
D 9364 7572 300 300 3.20% 3.96%

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 8 15 666792 3714.72 883 864 179.3
A 12 189 46432 254.19 883 864 179.3
A 15 222 39668 216.46 883 864 179.3
B 4 239 1945564 12349.98 832 812 157.5
B 0 85 229279 1450.86 832 812 157.5
B 3 64 35436 219.88 832 812 157.5
C 13 61 6323 27.77 857 860 196.7
C 14 234 4101 16.47 857 860 196.7
C 8 222 3413 12.98 857 860 196.7
D 1 52 753633 3850.04 830 810 195.5
D 10 157 581200 2968.19 830 810 195.5
D 10 199 110919 563.11 830 810 195.5

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