ASTROSAT CZTI

Data Quality Report

Orbit 08426

Creation date: 2024-06-27T15:32:37.195648
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/AS1A03_084T01_9000001188_08426cztM0_level2.evt modeM0/AS1A03_084T01_9000001188_08426cztM0_level2_quad_clean.evt
Size (bytes)691,375,68075,911,040
Size659.3 MB 72.4 MB
Events in quadrant A3,491,301480,673
Events in quadrant B3,599,629487,876
Events in quadrant C3,900,551471,958
Events in quadrant D9,469,500366,434

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147653
B0149662
C0163002
D0327492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70551301.842665%
B70551452.055280%
C70552663.770376%
D7055215830.588235%

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 7915 7055 2 2 0.03% 0.03%
B 7915 7055 2 2 0.03% 0.03%
C 7915 7055 48 48 0.61% 0.68%
D 7914 7054 2038 2038 25.75% 28.89%

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 14 111 62222 344.87 874 854 177.9
A 13 14 28559 155.69 874 854 177.9
A 13 248 15030 79.66 874 854 177.9
B 0 214 101348 597.28 875 854 168.3
B 5 255 28404 163.74 875 854 168.3
B 10 16 26253 150.96 875 854 168.3
C 9 68 619284 3165.91 840 843 195.3
C 14 67 6435 28.63 840 843 195.3
C 13 61 6233 27.59 840 843 195.3
D 1 52 5015961 30399.53 673 651 165.0
D 12 221 1607240 9738.09 673 651 165.0
D 12 233 252555 1526.88 673 651 165.0

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