ASTROSAT CZTI

Data Quality Report

Orbit 19390

Creation date: 2024-06-27T18:02:17.233654
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/AS1A05_208T03_9000002874_19390cztM0_level2.evt modeM0/AS1A05_208T03_9000002874_19390cztM0_level2_quad_clean.evt
Size (bytes)779,100,48065,427,840
Size743.0 MB 62.4 MB
Events in quadrant A3,007,839434,732
Events in quadrant B3,064,814438,052
Events in quadrant C3,022,635417,919
Events in quadrant D14,060,448236,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131491
B0131881
C0131422
D0461791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6485450.693909%
B6485530.817271%
C6485540.832691%
D6485524980.940632%

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 7330 6485 1 1 0.01% 0.02%
B 7330 6485 0 0 0.00% 0.00%
C 7330 6485 0 0 0.00% 0.00%
D 7330 6485 4896 4896 66.79% 75.50%

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 13 254 8914 51.79 778 761 157.4
A 0 226 6736 37.96 778 761 157.4
A 3 137 6381 35.7 778 761 157.4
B 12 111 18629 118.7 775 755 150.6
B 11 111 16587 105.14 775 755 150.6
B 14 111 14630 92.15 775 755 150.6
C 14 238 112781 636.59 743 748 176.0
C 3 233 14169 76.26 743 748 176.0
C 13 61 5201 25.3 743 748 176.0
D 10 66 8635399 70316.71 506 491 122.8
D 7 238 2324197 18922.65 506 491 122.8
D 1 52 1095746 8919.0 506 491 122.8

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