ASTROSAT CZTI

Data Quality Report

Orbit 02460

Creation date: 2024-06-27T14:18:05.313878
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/AS1G02_018T06_9000000370_02460cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02460cztM0_level2_quad_clean.evt
Size (bytes)425,718,72061,790,400
Size406.0 MB 58.9 MB
Events in quadrant A3,035,696352,964
Events in quadrant B3,151,085367,468
Events in quadrant C3,062,614364,514
Events in quadrant D3,218,371349,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129623
B0131442
C0130792
D0137442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6246841.344861%
B6246931.488953%
C62461001.601025%
D62461001.601025%

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 7501 6247 0 0 0.00% 0.00%
B 7501 6247 0 0 0.00% 0.00%
C 7501 6247 2 2 0.03% 0.03%
D 7501 6247 18 18 0.24% 0.29%

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 14 63 9778 56.55 784 767 159.4
A 12 194 8746 50.07 784 767 159.4
A 0 226 8248 46.95 784 767 159.4
B 3 0 32456 206.23 803 783 153.6
B 0 191 14343 88.29 803 783 153.6
B 12 111 10845 65.52 803 783 153.6
C 14 223 34299 187.13 770 775 179.2
C 12 4 8540 43.34 770 775 179.2
C 13 61 7154 35.61 770 775 179.2
D 7 67 192140 1067.29 756 737 179.3
D 13 235 58730 323.38 756 737 179.3
D 6 112 38483 210.48 756 737 179.3

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