ASTROSAT CZTI

Data Quality Report

Orbit 24638

Creation date: 2024-06-27T19:08:12.747410
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/AS1C05_012T06_9000003616_24638cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24638cztM0_level2_quad_clean.evt
Size (bytes)498,294,720136,048,320
Size475.2 MB 129.7 MB
Events in quadrant A3,204,555932,885
Events in quadrant B3,412,181944,586
Events in quadrant C4,422,903898,189
Events in quadrant D3,612,114893,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136263
B0142463
C0175463
D0149103

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6472971.498764%
B64731101.699367%
C64732093.228797%
D6473981.513981%

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 7537 6474 0 0 0.00% 0.00%
B 7538 6475 1 1 0.01% 0.02%
C 7538 6475 0 0 0.00% 0.00%
D 7538 6475 11 11 0.15% 0.17%

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 6 16 13759 78.78 826 809 164.4
A 13 254 11099 62.6 826 809 164.4
A 3 137 7331 39.68 826 809 164.4
B 0 189 89745 581.39 820 800 153.0
B 0 190 42910 275.25 820 800 153.0
B 5 172 36746 234.96 820 800 153.0
C 7 247 1087403 5962.41 797 801 182.2
C 14 238 127883 697.32 797 801 182.2
C 10 91 40440 217.51 797 801 182.2
D 8 195 385709 1981.03 812 788 194.3
D 1 52 52162 264.4 812 788 194.3
D 7 238 38110 192.08 812 788 194.3

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