ASTROSAT CZTI

Data Quality Report

Orbit 26406

Creation date: 2024-06-27T19:28:37.523296
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/AS1A09_127T01_9000003816_26406cztM0_level2.evt modeM0/AS1A09_127T01_9000003816_26406cztM0_level2_quad_clean.evt
Size (bytes)657,748,80080,959,680
Size627.3 MB 77.2 MB
Events in quadrant A3,396,486512,336
Events in quadrant B5,752,326493,691
Events in quadrant C5,868,382465,558
Events in quadrant D4,408,162471,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149350
B0219990
C0222860
D0182300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73011031.410766%
B730279210.846343%
C730276210.435497%
D73024065.560121%

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 7576 7302 2 2 0.03% 0.03%
B 7577 7303 401 401 5.29% 5.49%
C 7577 7303 325 325 4.29% 4.45%
D 7577 7303 291 291 3.84% 3.98%

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 5 203 12599 66.9 874 854 175.6
A 13 254 12039 63.71 874 854 175.6
A 0 13 11282 59.4 874 854 175.6
B 0 189 1794731 11109.02 842 820 161.5
B 5 172 528012 3264.7 842 820 161.5
B 0 230 60202 367.73 842 820 161.5
C 3 233 1761053 9133.53 821 825 192.7
C 4 254 505333 2617.81 821 825 192.7
C 2 16 247558 1280.26 821 825 192.7
D 12 233 1130119 5730.55 831 809 197.1
D 1 52 61457 307.75 831 809 197.1
D 2 234 34803 172.5 831 809 197.1

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