ASTROSAT CZTI

Data Quality Report

Orbit 20240408_A13_092T04_9000006172_level2

Creation date: 2024-04-10T12:51:18.873779
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/AS1A13_092T04_9000006172cztM0_level2.fits modeM0/AS1A13_092T04_9000006172cztM0_level2_quad_clean.evt
Size (bytes)156,574,080161,784,000
Size149.3 MB 154.3 MB
Events in quadrant A941,960996,296
Events in quadrant B923,1721,025,792
Events in quadrant C951,814970,156
Events in quadrant D649,562634,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0576740
B0415810
C0402440
D0932720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184523972.151528%
B184534152.248957%
C184533201.734135%
D18453689137.343521%

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 18452 18452 0 0 0.00% 0.00%
B 18453 18453 0 0 0.00% 0.00%
C 18453 18428 0 0 0.00% 0.00%
D 18453 18207 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 15 236 750 8.1 244 228 64.4
A 7 110 735 7.87 244 228 64.4
A 7 30 721 7.65 244 228 64.4
B 2 9 933 13.65 243 229 51.5
B 2 8 726 9.64 243 229 51.5
B 3 17 692 8.98 243 229 51.5
C 1 81 740 7.53 251 233 67.3
C 3 202 732 7.41 251 233 67.3
C 3 158 690 6.79 251 233 67.3
D 4 250 488 5.86 186 168 54.6
D 12 6 478 5.68 186 168 54.6
D 3 14 472 5.57 186 168 54.6

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