ASTROSAT CZTI

Data Quality Report

Orbit 40431

Creation date: 2024-06-27T22:16:01.828864
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_022T01_9000005540_40431cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40431cztM0_level2_quad_clean.evt
Size (bytes)321,065,28097,297,920
Size306.2 MB 92.8 MB
Events in quadrant A2,991,592680,374
Events in quadrant B2,692,903699,150
Events in quadrant C2,877,878644,046
Events in quadrant D2,917,388559,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120373
B0108072
C0114742
D0119482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5195150.288739%
B519530.057748%
C5195591.135707%
D51954238.142445%

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 7258 5196 5 5 0.07% 0.10%
B 7258 5196 2 2 0.03% 0.04%
C 7258 5196 53 53 0.73% 1.02%
D 7258 5195 36 36 0.50% 0.69%

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 462355 3658.47 628 618 126.2
A 2 79 56876 445.75 628 618 126.2
A 13 248 25120 194.14 628 618 126.2
B 3 112 206664 1783.77 618 603 115.5
B 4 170 39942 340.54 618 603 115.5
B 12 111 14142 117.2 618 603 115.5
C 15 214 226449 1639.03 601 606 137.8
C 14 254 217483 1573.96 601 606 137.8
C 5 250 61427 441.4 601 606 137.8
D 2 250 250408 1771.43 582 567 141.0
D 12 227 162245 1146.33 582 567 141.0
D 12 191 153069 1081.27 582 567 141.0

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