ASTROSAT CZTI

Data Quality Report

Orbit 20221203_A12_077T06_9000005408_level2

Creation date: 2022-12-07T17:06:04.350699
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_077T06_9000005408cztM0_level2.fits modeM0/AS1A12_077T06_9000005408cztM0_level2_quad_clean.evt
Size (bytes)1,591,096,3201,753,505,280
Size1.5 GB 1.6 GB
Events in quadrant A9,642,92210,821,154
Events in quadrant B9,271,63010,867,158
Events in quadrant C9,593,28410,532,640
Events in quadrant D7,791,2909,007,504

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06580
B06580
C06580
D06580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035500
B035500
C035500
D035500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03796480
B03916110
C03582850
D05513220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1734119760.562825%
B17341030561.762297%
C1734113530.203563%
D173411160339.245665%

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 239520 173412 0 0 0.00% 0.00%
B 239520 173388 0 0 0.00% 0.00%
C 239520 173406 0 0 0.00% 0.00%
D 239520 172761 0 0 0.00% 0.00%

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 7 110 7850 8.75 2516 2358 627.7
A 9 19 7844 8.74 2516 2358 627.7
A 0 29 7713 8.53 2516 2358 627.7
B 2 9 8115 12.1 2452 2335 477.5
B 3 80 7205 10.2 2452 2335 477.5
B 5 255 6617 8.97 2452 2335 477.5
C 1 81 7943 8.62 2539 2385 644.4
C 1 80 7626 8.13 2539 2385 644.4
C 3 203 7621 8.12 2539 2385 644.4
D 10 189 5878 6.52 2232 2036 589.4
D 7 3 5764 6.33 2232 2036 589.4
D 4 160 5707 6.23 2232 2036 589.4

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